SECTION SECTION TITLE DIVISION 02 - EXISTING CONDITIONS … · 2014-09-25 · metro baseline...

METRO BASELINE SPECIFICATIONSTABLE OF CONTENTS

DIVISION 2 THROUGH 34

SECTION SECTION TITLE

DIVISION 02 - EXISTING CONDITIONS

02 41 00 DEMOLITION02 71 00 DEWATERING FLUID TREATMENT (DFT) (GROUND WATER TREATMENT)

DIVISION 03 - CONCRETE

03 01 08 CONCRETE RESTORATION03 05 15 PORTLAND CEMENT CONCRETE 03 05 18 PRESTRESSED CONCRETE03 11 00 CONCRETE FORMWORK03 11 13 FALSE WORK03 15 00 CONCRETE ACCESSORIES03 15 13 WATERSTOPS03 15 15 ELASTONERIC BEARING PADS03 20 00 CONCRETE REINFORCEMENT03 23 00 PRESTRESSING BAR STEEL FOR CIP RETAINING WALLS03 25 23 EXPOSED FINISH CONCRETE03 30 00 CAST-IN-PLACE CONCRETE03 35 00 UNIFORM CONCRETE FINISHING03 35 05 UNFORMED CONCRETE FINISHES03 37 13 SHOTCRETE03 40 00 PRECAST CONCRETE03 41 00 STRUCTURAL PRECAST CONCRETE03 41 13 PRECAST PRESTRESSED HOLLOW CORE PLANKS03 41 16 PRECAST CONCRETE FLOATING SLABS03 45 00 PRECAST ARCHITECTURAL CONCRETE03 48 33 PRECAST PRESTRESSED CONCRETE PANELS03 48 43 PRECAST CONCRETE PLATFORM EDGE PAVERS03 49 00 GLASS FIBER REINFORCED CONCRETE PANELS03 50 00 CAST-IN-PLACE FLOATING SLABS 03 53 00 CONCRETE TOPPING03 60 00 GROUT03 61 11 NON-SHRINK GROUTING03 82 13 CONCRETE CORE DRILLING

DIVISION 04 - MASONRY

04 05 13 MORTAR AND GROUT 04 05 23 MASONRY ACCESSORIES04 22 00 CONCRETE UNIT MASONRY04 23 00 GLASS UNIT MASONRY AND CONCRETE PANELS04 43 00 GRANITE

DIVISION 05 - METALS

05 05 13 GALVANIZING05 05 15 FENCE GALVANIZING05 05 23 WELDED STUD CONNECTORS05 05 33 BASIC WELDING REQUIREMENTS05 12 23 STRUCTURAL STEEL05 12 35 STRUCTURAL STEEL AND MISCELLANEOUS METAL FOR BRIDGES05 13 01 STAINLESS STEEL ASSEMBLIES 05 13 13 STAINLESS STEEL FILLER PANEL SYSTEM05 13 23 STAINLESS STEEL ESCALATOR CLADDING 05 14 01 ALUMINUM ASSEMBLIES 05 30 00 METAL DECKING05 40 00 COLD-FORMED METAL FRAMING05 41 00 STRUCTURAL METAL STUD FRAMING05 43 00 SLOTTED CHANNEL FRAMING 05 50 00 METAL FABRICATIONS05 51 00 METAL STAIRS05 51 33 METALl LADDERS05 51 36 METAL WALKWAYS

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05 52 13 METAL RAILINGS05 53 10 METAL GRATINGS05 59 00 CUSTOM SHEET METAL 05 60 00 STEEL POLES FOR OCS05 70 00 ORNAMENTAL METAL WORK

DIVISION 06 - WOOD, PLASTICS, AND COMPOSITES

06 10 00 ROUGH CARPENTRY06 20 00 FINISH CARPENTRY06 82 00 PULTRUDED FIBERGLASS GRATING

DIVISION 07 - THERMAL AND MOISTURE PROTECTION

07 11 00 DAMP PROOFING07 13 00 SHEET WATERPROOFING 07 13 19 HYDROCARBON-RESISTANT MEMBRANE FOR CAST-IN-PLACE CONCRETE07 13 29 BUTYL RUBBER MEMBRANE WATERPROOFING07 13 50 HYDROCARBON-RESISTANT ELEVATOR CYLINDER CASING07 13 60 HYDROCARBON-RESISTANT COATING07 14 00 FLUID APPLIED WATERPROOFING07 17 00 BENTONITE WATERPROOFING07 18 00 TRAFFIC COATINGS07 21 00 BUILDING INSULATION 07 22 16 ROOF INSULATION BOARD 07 26 00 VAPOR RETARDERS07 42 13 METAL WALL PANELS07 42 43 COMPOSITE WALL PANELS 07 44 16 PORCELAIN ENAMEL PANELS07 51 00 BUILT-UP BITUMINOUS ROOFING 07 52 00 MODIFIED BITUMINOUS MEMBRANE ROOFING 07 53 00 ELASTOMERIC MEMBRANE ROOFING07 56 00 FLUID-APPLIED ROOFING07 61 00 SHEET METAL ROOFING07 62 00 SHEET METAL FLASHING AND TRIM07 72 00 ROOF ACCESSORIES07 81 00 SPRAYED-ON FIREPROOFING 07 81 23 INTUMESCENT FIREPROOFING07 81 33 RIGID MINERAL BOARD FIREPROOFING07 84 00 FIRESTOPPING 07 91 26 JOINT FILLERS AND GASKETS07 92 00 JOINT SEALANTS07 95 00 EXPANSION CONTROL07 95 55 BRIDGE PTFE BEARINGS07 95 60 SEISMIC EXPANSION JOINT ASSEMBLIES07 95 63 BRIDGE EXPANSION JOINTS

DIVISION 08 - OPENINGS

08 01 57 WINDOW RESTORATION AND REPLACEMENT08 11 13 HOLLOW METAL DOORS AND FRAMES08 13 76 Bi-FOLDING METAL DOORS08 30 60 TRAIN CONTROL & COMMUNICATION (TC&C) ROOMS ACCESS HATCHES08 31 13 ACCESS DOORS AND FLOOR HATCHES08 33 13 COILING COUNTER DOORS08 33 23 OVERHEAD COILING DOORS 08 33 26 OVERHEAD COILING GRILLES08 34 00 EMERGENCY EXIT HATCHES08 39 00 PRESSURE RESISTANT DOORS 08 45 13 STRUCTURED-POLYCARBONATE-PANEL ASSEMBLIES08 51 13 ALUMINUM WINDOWS AND FRAMES08 62 00 SKYLIGHTS 08 63 00 METAL FRAMED SKYLIGHT 08 71 00 DOOR HARDWARE 08 80 00 GLAZING08 81 13 POLYCARBONATE GLAZING

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08 91 00 LOUVERS

DIVISION 09 - FINISHES

09 22 16 NON-LOAD BEARING INTERIOR STUD SYSTEM09 22 26 CEILING SUSPENSION SYSTEM 09 24 23 PORTLAND CEMENT PLASTER09 29 16 GYPSUM BOARD AND BACKER UNITS09 30 00 FLOOR AND WALL TILE09 30 13 TILE REPLACEMENT AND RESTORATION09 35 00 TACTILE FLOOR PANEL09 51 13 ACOUSTICAL PANEL CEILINGS09 51 53 SPRAYED-ON ACOUSTICAL FINISH09 56 16 METAL CEILING SYSTEMS 09 63 40 STONE FLOORING09 65 00 RESILIENT FLOORING09 66 16 TERRAZO FLOOR TILE AND PAVERS09 69 00 ACCESS FLOORING09 77 00 STAINLESS STEEL FORMED CLADDING09 91 00 PAINTING09 91 10 CLEANING AND PAINTING STRUCTURAL STEEL AND MISCELLANEOUS METAL FOR BRIDGES09 96 23 ANTI-GRAFFITI COATING 09 96 35 FLUOROPOLYMER COATING 09 96 36 FIELD APPLIED HIGH PERFORMANCE COATINGS 09 96 37 SILICONE POLYESTER FINISH09 96 56 COAL TAR EPOXY COATING SYSTEM09 96 57 DIELECTRIC INSULATION 09 96 60 ELECTRICALLY INSULATING DECK COATING09 97 00 PHOSPHORESCENT PHOTO LUMINESCENT COATING

DIVISION 10 - SPECIALTIES

10 14 10 SIGNS10 14 23 SITE AND OPERATION SIGNS 10 14 26 STATION MARKERS10 14 33 ILLUMINATED SIGNS AND EDGE LIGHTS 10 14 53 TRAFFIC SIGNAGE10 17 16 PUBLIC TELEPHONES10 21 13 METAL TOILET COMPARTMENTS10 21 15 PLASTIC TOILET COMPARTMENTS10 22 13 WIRE MESH PARTITIONS10 28 13 TOILET ACCESSORIES10 43 00 BETWEEN CAR BARRIERS 10 44 13 FIRE EXTINGUISHERS AND CABINETS10 50 00 MAP CASES10 51 13 METAL LOCKERS10 56 29 STORAGE RACK SYSTEM10 81 13 BIRD DETERRENT DEVICES

DIVISION 12 - FURNISHINGS

12 15 20 ART PROGRAM12 59 00 STATION FURNISHINGS12 93 00 SITE FURNISHING12 93 12 BICYCLE PARKING12 93 14 BICYCLE LOCKERS AND RACKS

DIVISION 13 - SPECIAL CONSTRUCTION

13 31 23 TENSIONED FABRIC STRUCTURES13 34 00 KIOSKS13 34 19 GUARDHOUSE

DIVISION 14 - CONVEYING EQUIPMENT

14 21 23 ELECTRIC TRACTION PASSENGER ELEVATORS

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14 21 24 MACHINE ROOM-LESS ELECTRIC TRACTION ELEVATORS14 24 00 HIGH DENSITY POLY ETHYLENE (HDPE) ELEVATOR JACK-HOLE CASING14 24 23 HYDRAULIC PASSENGER ELEVATORS14 24 26 HYDRAULIC OIL PIPING FOR ELEVATORS14 31 23 ESCALATORS

DIVISION 21 - FIRE SUPPRESSION

21 05 00 BASIC FIRE SUPPRESSION SYSTEM REQUIREMENTS21 05 10 FIRE PROTECTION DEMOLITION21 12 00 FIRE-SUPPRESSION STANDPIPES21 13 13 WET-PIPE SPRINKLER SYSTEM21 22 00 CLEAN AGENT FIRE-EXTINGUISHING SYSTEM21 30 00 FIRE PUMPS WITH CONTROLLERS

DIVISION 22 - PLUMBING

22 05 00 BASIC PLUMBING REQUIREMENTS22 05 10 PLUMBING DEMOLITION22 05 29 PIPE SLEEVES, SUPPORTS, GUIDES AND ANCHORAGES22 05 48 VIBRATION-SEISMIC ISOLATIONS FOR PLUMBING WORK22 05 53 PLUMBING SYSTEMS IDENTIFICATION22 07 00 PLUMBING INSULATION22 09 00 INSTRUMENTATION AND CONTROLS FOR PLUMBING WORK22 11 00 WATER SUPPLY SYSTEM (PLUMBING)22 11 23 WATER CIRCULATING PUMPS 22 13 00 SANITARY SEWER SYSTEM (PLUMBING)22 13 23 SAND & GREASE INTERCEPTOR22 13 29 SUMP PUMPS (PLUMBING)22 14 01 STORM DRAINAGE SYSTEM (PLUMBING)22 15 00 COMPRESSED AIR SYSTEM22 33 00 DOMESTIC WATER HEATERS22 40 00 PLUMBING FIXTURES22 60 00 VACUUM CLEANING SYSTEM

DIVISION 23 - HEATING, VENTILATING AND AIR CONDITIONING (HVAC)

23 01 00 BASIC MECHANICAL REQUIREMENTS - HVAC SYSTEMS23 05 10 MECHANICAL DEMOLITION23 05 48 VIBRATION ANDSEISMIC CONTROL FOR HVAC SYSTEMS23 05 53 MECHANICAL IDENTIFICATION - HVAC SYSTEMS23 05 93 TESTING, ADJUSTING AND BALANCING23 07 00 MECHANICAL INSULATION23 08 00 COMMISSIOING OF HVAC SYSTEMS 23 09 00 CONTROLS AND INSTRUMENTATION FOR HVAC SYSTEMS23 10 13 FACILITY FUEL OIL LEAK DETECTION AND MONITORING SYSTEMS23 11 13 FACILITY FUEL OIL PIPING AND ACCESSORIES23 11 23 NATURAL GAS SYSTEM23 12 13 FACILITY FUEL OIL PUMP23 13 13 FACILITY UNDERGROUND FUEL OIL STORAGE TANKS23 13 23 FACILITY ABOVEGROUND FUEL OIL STORAGE TANKS23 21 13 CHILLED WATER AND CONDENSER WATER PIPING SYSTEMS23 21 23 WATER PUMPS23 22 13 HEATING HOT WATER SYSTEMS23 23 00 REFRIGERANT PIPING SYSTEMS23 30 00 AIR DISTRIBUTION AND DUCT SYSTEMS23 33 19 SOUND ATTENUATORS 23 34 00 HVAC FANS23 35 23 STATION EMERGENCY VENTILATION FANS23 35 26 TUNNEL JET FANS23 35 28 EMERGENCY FAN DAMPERS AND TRACK DAMPERS23 36 00 AIR TERMINAL UNITS23 52 00 BOILERS23 64 00 AIR COOLED WATER CHILLERS23 64 10 WATER-COOLED WATER CHILLERS23 65 00 COOLING TOWERS

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23 70 00 HEATING, VENTILATING AND AIR CONDITIONING EQUIPMENT

DIVISION 26 - ELECTRICAL

26 05 00 ELECTRICAL DEMOLITION26 05 05 DESIGN REQUIREMENTS FOR THE AUXILLARY POWER DISTRIBUTION26 05 10 BASIC ELECTRICAL MATERIALS AND METHODS26 05 13 MEDIUM VOLTAGE CABLES AND TERMINATIONS26 05 17 DRY-TYPE TRANSFORMERS 0.100 - 75kVA 600V26 05 19 INSULATED WIRES AND CABLES26 05 26 GROUNDING AND BONDING26 05 33 RACEWAY SYSTEMS ALONG ELEVATED AND AT-GRADE GUIDEWAY26 05 36 CABLEWAYS FOR TUNNEL26 05 43 UNDERGROUND ELECTRICAL DISTRIBUTION SYSTEM AND STRUCTURES26 05 48 VIBRATION ISOLATION AND RESTRAINING DEVICES26 05 53 IDENTIFICATION FOR ELECTRICAL SYSTEMS26 05 73 ARC FLASH HAZARD ANALYSIS AND SHORT CIRCUIT/COORDINATION26 08 00 TEST SUPPORT/START-UP26 09 16 CONTROL STATIONS, CONTROL PANELS AND INTERFACE CABINETS26 09 18 CONTROLS AND INSTRUMENTATION26 09 19 MOTOR STARTERS AND CONTACTORS26 09 23 LIGHTING CONTROLS AND INSTRUMENTATION26 12 00 AUXILIARY POWER TRANSFORMERS, DRY-TYPE26 23 00 480-VOLT SWITCHBOARD26 24 00 MOTORS 26 24 19 MOTOR CONTROL CENTERS26 28 16 ENCLOSED CIRCUIT BREAKERS AND PANEL BOARDS26 33 01 DC BATTERY SYSTEMS26 33 53 UNINTERRUPTIBLE POWER SUPPLY(UPS)26 36 23 AUTOMATIC TRANSFER SWITCH (ATS)26 42 00 CATHODIC PROTECTION SYSTEMS26 42 13 CATHODIC PROTECTION FOR WATER DISTRIBUTION FACILITIES 26 42 23 ELECTRICAL CONTINUITY TEST FOR STEEL REINFORCEMENT26 42 26 CATHODIC PROTECTION SYSTEMS (STEEL TUNNEL LINER)26 50 00 LIGHTING26 52 00 TUNNEL LIGHTING26 56 00 EXTERIOR LIGHTING26 70 30 ELECTRICAL REQUIREMENTS OF MECHANICAL WORK

Division 27 COMMUNICATION

27 05 12 TICKET VENDING MACHINE SYSTEM27 05 14 RADIO SYSTEM FOR UNDERGROUND STATIONS 27 05 15 SUPERVISORY CONTROL AND DATA ACQUISITION REMOTE TERMINAL UNIT (SCADA RTU)27 05 16 SPARE PARTS AND TEST EQUIPMENT27 05 18 FACILITIES AND EMERGENCY MANAGEMENT SYSTEM27 05 20 COMMUNICATIONS SYSTEM / TICKET VENDING MACHINE27 05 43 CABLE TRANSMISSION SYSTEM 27 05 56 SAFETY AND SYSTEM ASSURANCE27 07 01 COMMUNICATIONS EQUIPMENT AND CIRCUITS27 11 19 COMMUNICATIONS TERMINAL BLOCK, CONNECTORS AND PATCH PANELS27 15 00 ANTENNAS, CABLING AND POLE MOUNTS27 15 23 OPTICAL FIBER HORIZONTAL CABLING27 15 33 COMMUNICATIONS COAXIAL HORIZONTAL CABLE27 21 26 DATA COMMUNICATIONS NETWORK MANAGEMENT27 21 29 DATA COMMUNICATIONS SWITCHES27 30 01 TELEPHONE SYSTEMS27 32 16 WIRELESS TRANSCEIVERS27 32 17 ON-FREQUENCY REPEATERS27 51 16 PUBLIC ADDRESS/VARIABLE MESSAGE SIGN (PA/VMS) SYSTEM27 70 26 UNINTERRUPTABLE POWER SYSTEMS (UPS) AND FLOAT BATTERY POWER SUPPLIES

DIVISION 28 - ELECTRONIC SAFETY AND SECURITY

28 10 15 INTRUSION DETECTION SYSTEM28 31 00 FIRE DETECTION AND ALARM SYSTEM

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28 41 29 CLOSED CIRCUIT TELEVISION SYSTEM28 41 31 GAS DETECTION & ALARM SYSTEM28 41 32 SEISMIC EVENT DETECTION & ALARM SYSTEM28 41 33 TUNNEL PORTAL SURVEILLANCE SYSTEM

DIVISION 31 - EARTHWORK

31 01 70 SEALING LEAKS31 09 13 GEOTECHNICAL INSTRUMENTATION AND MONITORING 31 10 00 SITE CLEARING31 20 00 EARTHWORK31 23 19 DEWATERING31 41 16 STEEL SHEET PILING31 48 00 UNDERPINNING, SUPPORT AND RESTORATION OF STRUCTURES31 50 00 EXCAVATION SUPPORT SYSTEMS31 51 00 TIEBACK ANCHORS31 63 26 CAST-IN-DRILLED-HOLE PILES31 63 29 OCS POLE FOUNDATION AND GUY ANCHOR PIER SHAFTS31 63 30 OCS POLE FOUNDATION PIER CONSTRUCTION31 63 31 OCS GUY ANCHOR PIER CONSTRUCTION31 63 32 GUY GUARDS31 63 33 OCS POLE AND GUY ANCHOR PEDESTAL ANCHOR BOLT CONSTRUCTION31 71 00 EXCAVATION BY SEQUENTIAL EXCAVATION METHOD (SEM)31 71 16 MINED CROSS PASSAGES31 71 19 EXCAVATION BY TUNNEL BORING MACHINE31 73 00 TUNNEL GROUTING31 74 00 FABRICATED STEEL SEGMENTED TUNNEL LINERS31 74 13 CAST-IN-PLACE CONCRETE TUNNEL LINING31 74 16 PRECAST CONCRETE ONE-PASS TUNNEL LINERS31 79 00 COMPENSATION GROUTING31 81 00 JET GROUTING31 82 00 PERMEATION GROUTING

DIVISION 32 - EXTERIOR IMPROVEMENTS

32 01 13 SLURRY SEALCOAT32 01 90 LANDSCAPE MAINTENANCE AND PLANT ESTABLISHMENT32 11 23 CRUSHED AGGREGATE BASE32 12 16 ASPHALT CONCRETE PAVEMENT32 13 13 PORTLAND CEMENT CONCRETE PAVEMENT32 13 16 SPECIAL FINISH CONCRETE PAVING (SFCP)32 14 16 BRICK PAVERS32 15 40 CRUSHED STONE SURFACING 32 16 13 CONCRETE CURBS, GUTTERS AND SIDEWALKS32 17 23 PAVEMENT STRIPING AND MARKING32 31 13 CHAIN LINK FENCING32 31 14 FENCE GALVANIZING 32 31 19 STEEL PICKET FENCING32 32 00 RETAINING WALLS32 32 24 REINFORCED SOIL (MSE) RETAINING WALL32 80 00 IRRIGATION SYSTEM32 91 00 TOPSOIL32 92 19 HYDRO SEEDING32 93 00 PLANTS32 93 23 LANDSCAPE PLANTING32 94 43 TREE WELLS32 96 00 TREE STORAGE AND REPLANTING

DIVISION 33 - UTILITIES

33 00 00 PIPED UTILITIES (NEW)33 01 00 MAINTENANCE AND SUPPORT UTILITIES33 11 00 WATER DISTRIBUTION SYSTEM33 30 00 SANITARY SEWER SYSTEM33 39 13 MANHOLE FRAMES AND COVERS33 40 00 STORM DRAINAGE SYSTEMS

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33 51 00 GAS DISTRIBUTION SYSTEM REARRANGEMENTS33 51 13 GAS SUPPLY SYSTEM33 71 00 UNDERGROUND ELECTRICAL DISTRIBUTION SYSTEM AND STRUCTURES33 82 13 UNDERGROUND TELEPHONE, TELEGRAPH AND CITY COMMUNICATIONS33 82 23 UNDERGROUND CABLE TELEVISION FACILITIES

DIVISION 34 - TRANSPORTATION34 11 00 GENERAL TRACK CONSTRUCTION34 11 07 TRACK ELECTRICAL TESTING34 11 08 TRACK-TO-EARTH RESISTANCE TESTS34 11 13 RUNNING RAIL34 11 16 RAIL WELDING34 11 23 SPECIAL TRACK WORK34 11 24 DIRECT FIXATION TRACK CONSTRUCTION34 11 25 DIRECT FIXATION RAIL SOFT FASTENER34 11 26 BALLASTED TRACK CONSTRUCTION34 11 27 SPECIAL TRACK WORK - BALLASTED34 11 28 SPECIAL TRACK WORK - DIRECT FIXATION34 11 29 BALLAST34 11 30 SUB BALLAST34 11 31 TRACK GRADE CROSSINGS34 11 33 CONCRETE TIES34 11 34 TIMBER TIES34 11 35 TIMBER SWITCH TIES34 11 36 DIRECT FIXATION RAIL FASTENERS34 11 93 TRACK APPURTENANCES AND OTHER TRACK MATERIAL34 21 10 BASIC ELECTRICAL REQUIREMENTS (TPS)34 21 15 SUBSTATION ENCLOSURE34 21 19 HIGH-VOLTAGE AC POWER SWITCHGEAR34 21 20 DC POWER SWITCHGEARS34 21 21 750 VOLT NEGATIVE BUS BOXES34 21 22 METAL-ENCLOSED BUS AND BUSWAYS34 21 27 TRACTION POWER INSULATED WIRES AND CABLES34 21 28 DC INSULATED CABLES34 21 29 CABLE TERMINATIONS34 21 30 NEGATIVE GROUNDING DEVICE34 21 31 TRACTION POWER BLUE LIGHT STATION (BLS) SYSTEM34 21 49 TRACTION POWER PROGRAMMABLE LOGIC CONTROLLER (PLC)34 21 50 BASIC ELECTRICAL MATERIALS AND METHODS34 21 55 GROUDING AND BONDING34 21 61 TRACTION POWER DC LOAD-BREAK SWITCHES34 21 65 BATTERIES AND ACCESSORIES34 21 71 DISTRIBUTION AND POWER TRANSFORMERS34 21 75 AC-TO-DC CONVERSATION ASSEMBLIES34 21 76 TRACTION POWER SUPERVISORY CONTROL INTERFACE TERMINAL CABINET (SCITC)34 21 80 THIRD RAIL34 21 81 THIRD RAIL INSTALLATION34 21 85 TRACTION POWER MANUALS34 21 90 TRACTION POWER TRAINING34 23 00 OCS POLE AND GUY ANCHOR PEDESTAL ANCHOR BOLT CONSTRUCTION34 23 09 OVERHEAD CONTACT SYSTEM (OCS) STANDARD34 23 15 STEEL WIRE AND WIRE ROPE34 23 17 ASSEMBLIES, FITTINGS, AND HARDWARE34 23 18 INSULATORS34 23 19 OCS GROUNDING AND BONDING SYSTEMS34 23 20 BARE CONDUCTORS - OCS34 23 21 SECTIONALIZING INSULATOR ASSEMBLY34 23 22 SECTIONALIZING BYPASS AND DISCONNECT SWITCHES34 23 24 SURGE ARRESTORS34 23 25 OVERHEAD CONTACT SYSTEM INSTALLATION34 23 26 OVERHEAD CATENARY SYSTEM TESTING34 27 00 TRACTION POWER, TESTING AND ACCEPTANCE34 42 13 GENERAL RAILWAYS SIGNAL REQUIREMENTS34 42 15 TRACT CIRCUITS34 42 16 INTERIOR WIRES AND CABLE34 42 17 EXTERIOR WIRE AND CABLE

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34 42 25 MICROPROCESSOR CONTROL SYSTEMS34 42 27 ELECTRICAL AND ELECTRONIC COMPONENTS34 42 28 SWITCH MACHINE LAYOUTS34 42 30 SPECIAL TRACKWORK BONDING34 42 35 SIGNAL LAYOUTS34 42 40 CIRCUIT-LOGIC REQUIREMENTS34 42 41 TRAIN CONTROL LOCAL CONTROL PANEL34 42 42 TRAIN CONTROL BOOK OF PLANS REQUIREMENTS34 42 45 POWER DISTRIBUTION34 42 55 MARKING AND TAGGING34 42 60 SYSTEM GROUDING TRAIN CONTROL34 42 70 TRAIN CONTROL BUNGALOW AND CASE LAYOUT34 42 80 RELAYS34 42 90 ELECTROMAGENTIC COMPATIBILITY - SIGNAL SYSTEM34 42 92 TRAIN CONTROL INTERFACE REQUIREMENTS34 42 95 TETS AND INSPECTION34 42 96 TRAIN CONTROL MANUALS AND TRAINING 34 76 13 GRADE CROSSING LAYOUTS

8 OF 8 REVISED: 09/05/12

Demolition 02 41 00 - 1 Baseline: 07/11/12 REVISION 1: 09/05/12

SECTION 02 41 00

DEMOLITION

PART 1 - GENERAL

1.01 SECTION INCLUDES A. Site clearing within those parcels indicated, and includes surface and subsurface

removal or capping of public utility connections, removal and filling of basements and depressions, and installing and removing temporary fence. All materials are to be removed from the site; recycled or disposed of.

B. Completely remove buildings and structure foundations, footings and foundation systems, hazardous materials, basements, stairs, hardscape, and walls except as otherwise indicated.

C. Prior to start of demolition of facilities, confirm that all utility services have been shut off, notify respective utility agencies and coordinate this work in accordance with the governing agency.

D. Remove trees, bushes, and weeds as indicated. Protect trees that are to remain on Worksite.

E. Remove and dispose of debris and liter, in accordance with the construction Best Management Plan (BMP).

F. Demolish only to the extent indicated.

G. Cap sewer house connections at property line. Cap gas and water lines, remove electrical, telephone, and cable lines.

H. For Street Use Permits, required for installing pedestrian canopies on sidewalks, parking trucks, dumpsters in curb lane adjacent to Worksite; contact Street Use Inspection-Permit Office of local authorities having jurisdiction at least 30 days before start of operations to make necessary arrangements and obtain permit.

I. For Haul Route Permits, contact Bureau of Engineering and Metro Rail Coordinator, for requirements at least 30 days before required start date of hauling operations, unless otherwise specified or according to the local authorities.

1.02 RELATED SECTIONS

A. Section 01 33 00: Submittal Procedures

B. Section 01 43 10: Project Quality Program Requirements - Design/Build or Section 01 43 20: Project Quality Program Requirements - Design/Bid/Build (as applicable)


C. Section 01 35 43: Environmental Procedures for Hazardous Materials

D. Section 01 35 69: Lead-Related Construction Work

E. Section 01 35 70: Asbestos-Related Construction Work

F. Section 01 56 28: Construction Fencing (Chain Link)

G. Section 01 57 19: Temporary Environmental Control

H. Section 31 20 00: Earthwork

I. Section 03 30 00: Cast-In-Place Concrete

J. Section 03 31 00: Concrete Formwork

K. Section 05 12 35: Structural Steel and Miscellaneous Metal for Bridges

1.03 REFERENCES

A. South Coast Air Quality Management District (SCAQMD):

1. Rule 402 Nuisance

2. Rule 403 Fugitive Dust

3. Rule 1403 Asbestos Emissions from demolition/Renovation Activities

1.04 QUALITY ASSURANCE

A. Comply with Project Quality Program Requirements (see 1.02 above).

B. Perform Work in compliance with requirements of governing authorities having jurisdiction, and as specified. Metro will provide written authorization to commence Work.

C. Provide temporary fence and gates complying with Section 01 56 28, Construction Fencing (Chain Link).

1.05 SUBMITTALS

A. Refer to Section 01 33 00 - Submittal Procedures, for submittal requirements and procedures.

B. Plan containing methods and schedule of demolition in conformance with Demolition Article, CAL/OSHA Construction Safety Orders, and other regulatory authorities; South Coast Air Quality Management District, Rule 1403, City Of Los Angeles, California Environmental Protection Agency (Cal/EPA).

C. Permits obtained by Contractor for demolition, removal, transport and disposal of debris.


D. Letter documenting arrangements for disposing of waste and excess materials at a legally licensed landfill/disposal facility outside Worksite.

E. All non-hazardous and hazardous waste manifests will be signed by and managed by Metro. Manifests to be provided by the Contractor, demolition Contractor or transporter. Copies of manifests and landfill documents will be provided to the Contractor.

F. Upon completion of Work provide As-built Drawing(s) of locations and depths of Sanitary Sewer Service Caps, water lines, gas lines, TV cable, etc.

1.06 DEFINITIONS (Not Used)

1.07 WORKSITE CONDITIONS

A. Protection of Persons and Property:

1. Post warning lights at perimeters of open depressions and excavations occurring as part of Work; when accessible through adjacent property or through public access. Operate warning lights during hours from dusk to dawn each day and as otherwise required.

a. Excavations and depressions - Barricade in accordance with CAL-OSHA standards.

2. Protect utilities, pavements and facilities from damage caused by demolition vehicle equipment, settlement, lateral movement, undermining, washout, and other hazards created by the demolition operations.

3. Repair damage to sidewalks, driveways, curbs, fences, shrubs, and trees, adjacent to Worksite that are the result of the Contractor’s activities.

B. Unknown Conditions:

1. Contract Drawings may not represent all surface nor sub-surface conditions at Worksite. Compare with actual conditions before commencing of Work. Pot-hole and locate the critical sub-surface utilities prior to performing any excavation.

2. Remove grade beams, caissons, and other structural elements discovered during the Work, unless otherwise noted to remain.

3. Metro has assessed structures to be demolished for asbestos-containing materials (ACM). Refer to other specification sections for handling of ACM.

4. Existing soils may contain hazardous materials. Hazardous material work is included in the Scope of Work. Refer to other specification sections, for handling of soils containing hazardous material.

C. Dust Control

1. As specified in Section 01 57 19, Temporary Environmental Control and South Coast Air Quality Management District Rule 402 and 403, and other regulatory requirements.


D. Pollution Control:

1. Refer to Section 01 57 19, Pollution Controls, for measures to mitigate dust, noise/vibration, water and other pollution created by the Work.

2. Metro will perform audit monitoring of air, noise, water, and other media to ensure compliance with specifications and legal regulatory requirements.

E. Lead-Based Paint:

1. Metro has assessed structures to be demolished for lead-based paint. Surfaces found to contain lead-based paint and estimated qualities are identified in Environmental Site Assessment Reports furnished in the Contract Documents.

2. Comply with Section 01 35 69, Lead-Related Construction Work.

F. Asbestos:

1. Metro has assessed structures to be demolished for asbestos-containing materials. Asbestos containing construction materials are identified in Environmental Site Assessment Reports furnished in the Contract Documents.

2. Comply with Section 01 35 69, Asbestos Related Construction Work.

G. Underground Storage Tanks (USTs)

1. USTs are located where indicated. Refer to Sections 01 35 43, Environmental Procedures for Hazardous Materials, for removal of these tanks.

PART 2 - PRODUCTS

2.01 MATERIALS USED FOR BACKFILL

A. As specified in Section 31 20 00, Earthwork..

2.02 TEMPORARY FENCE AND GATES

A. As specified in Section 01 56 28, Construction Fencing (Chain Link).

PART 3 - EXECUTION

3.01 DEMOLITION

A. Do not start demolition until submittals are reviewed and accepted and all permits are obtained.

B. Install and remove temporary fence and gates as noted on drawings.

C. Minimize construction noise at demolition Worksite close to residential areas.


D. Demolish buildings and other structures, including foundations and base slabs, as indicated, and remove from Worksite. Use methods as required to complete Work within limitations of regulations, and requirements of governing agencies and Metro.

1. Perform demolition and removal by means approved by Metro.

2. Proceed with demolition Work in a systematic manner in accordance with Demolition Plan. Complete demolition Work above each floor or tier before disturbing supporting members on lower levels.

3. Remove Hazardous Materials in accordance with Sections 01 35 69, Lead Related Construction Work and Section 01 35 70, Asbestos Related Construction Work, and in accordance with Industry Standards.

4. Demolish concrete and masonry in small sections.

5. Break up and remove concrete slabs on-grade, unless otherwise shown to remain.

6. Demolish and remove foundations, footings, grade beams, and other concrete objects.

7. Completely remove basements and depressed pits.

8. Remove walks, steps, walls, loading docks or platforms adjoining buildings, unless otherwise noted to remain. Do not remove sidewalks in public right of way.

9. Remove poles, signs and fences, including footings unless otherwise noted to remain. Poles owned by utility company(s) will be removed by utility company(s).

10. Remove trees and shrubs within parcel limits.

E. Break up and remove asphalt and concrete pavement, walks, steps, walls, slabs and aprons, unless indicated otherwise on the drawings.

F. Cap sewer service laterals at property line according to City of Los Angeles, Standard Plan S-110-1, Note 4. Note location and depth of cap on As-Built drawings, along with locations of other utility terminations.

G. Backfill and compact depressions including basement cavities caused by any excavations, demolition and removal, or as called out on the Contract Drawings in accordance with Section 31 20 00 Earthwork except that separate measurement or payment will not be made.

3.02 SALVAGE OR DISPOSAL OF MATERIALS

A. Materials indicated to be removed or demolished become property of Contractor. Remove from Worksite and recycle or dispose of at legal disposal sites. Arrange for and pay required fees.

B. Do not allow non-salvageable material demolished or removed to accumulate at Worksite. Remove from Metro's property at frequent intervals, or as directed by Metro.

C. Burning of materials at the Worksite is not allowed.


D. Achieve a minimum of 80% for recycling of all demolition waste. Recycling facilities acceptance of concrete, brick, stone, metal, glass, wood, interior and exterior architectural details, etc. are to be provided to Metro. During loading of all materials into dump trucks the Contractor shall meet the noise criteria. Large concrete slabs are not to be dumped into empty containers. A small amount of soil shall be loaded into the truck/container to act as a cushion/noise suppressant.

E. Cleanup:

1. Leave worksite clean and orderly at the end of each day. There shall be no off site migration of dust, dirt, or water. Each Worksite shall have access, egress and adjacent sidewalk areas swept and clean at all times.

2. Contractor shall be responsible for the removal of dirt tracked out onto city streets.

3.03 SECURITY

A. Fence gates at each parcel shall be locked and secured except when Contractor is working on that parcel. Doors to buildings and structures shall be locked except when work is occurring within the building.

B. Night fire watch/security shall be provided for any structure under demolition when the work is not completed by the end of the business day.

END OF SECTION 02 41 00

Dewatering Fluid Treatment (DFT) 02 71 00 - 1 Baseline: 07/11/12

SECTION 02 71 00

DEWATERING FLUID TREATMENT (DFT)

PART 1 - GENERAL

1.01 SECTION INCLUDES A. Providing a groundwater testing and analysis program to comply with National Pollutant

Discharge Natoional Pollutant Discharge Elimination System (NPDES) requirements and designing, furnishing, locating, installing, maintaining, moving on and off site as required, operating, and moving a temporary dewatering fluid treatment system to satisfactorily treat dewatered fluids for discharge to storm water drainage systems.

B. Metro or its designee will obtained NPDES permits to discharge groundwater into existing storm drain system. Obtain storm drain connection permits from local authority having jurisdiction and other permits as required.

C. Contractor is responsible for treatment and disposal of dewatering fluids while maintaining compliance with requirements of Metro’s NPDES permit. Delays, legal costs, fines, or other expenses due to the Contractor's inadequate treatment or other factors resulting in nonconformance with permit are solely responsibility of Contractor.




1.03 REFERENCES

A. California Environmental Protection Agency (Cal/EPA)

1. State Water Resources Control Board (SWRCB)

2. Los Angeles Regional Water Quality Control Board (LARWQCB)



B. Standard Provisions and General Monitoring and Reporting Requirements and Waste Discharge Requirements of the State Water Resources Control Board (SWRCB) and Los Angeles Regional Water Quality Control Board (LARWQCB), apply to this Contract.

C. Operate DFT system with personnel licensed as required under California law.


D. Compliance with NPDES Permit: 1. Comply with NPDES permit requirements. DFT Subcontractor is responsible for

conducting permit compliance testing program by utilizing services of independent certified laboratory.

2. Testing program requirements - In accordance with requirements of NPDES permit.

1.05 SUBMITTALS

A. Refer to Section 01 33 00 - Submittal Procedures, for submittal requirements and procedures.

B. Basis of Design engineering report by DFT subcontractor stating basis for process design, flow diagrams, proposed equipment, planned treatment, chemical dosage rates, and recommended groundwater sampling and analysis program for DFT system prior to commencement of dewatering Work.

C. Working Drawings, signed and sealed by a registered civil engineer licensed in the State of California, for review and acceptance by Metro or its designee, upon acceptance of Basis of Design report.

D. Storm drain connection permits.

E. Documentation: 1. Copies of required NPDES compliance testing analyses and reports prepared for

submittal to Los Angeles Regional Water Quality Control Board (LARWQCB) Submit first to Metro or its designee for acceptance, return to Contractor for submittal to LARWQCB.

2. Copies of required groundwater analysis and testing data as well as DFT operational

testing analyses and reports prepared for submittal to Metro or its designee.

F. Groundwater analyses and testing data and operating and process monitoring data in a monthly report to Metro or its designee.

G. Weekly letter report summarizing daily and weekly chemical analyses and chemical consumption.

H. Provide NPDES permit compliance testing as specified in permit by an independent certified laboratory experienced in the required analyses. Independent certified labor-atory - Approved by Metro or its designee, and responsible for sending a duplicate copy of analyses and reports directly to Metro or its designee. Prepare and submit to Metro or its designee for review, a copy of permit required compliance reports to Los Angeles Regional Water Quality Control Board (LARWQCB).

I. Provide operational testing and analyses performed either by independent certified testing laboratory or by DFT Subcontractor, and a written report certified as accurate by


DFT Subcontractor, listing analyses and chemical usage rates, as specified, on a weekly basis.



A. Existing Reports and Data - Geotechnical Design Summary Reports, Hydro-geologic investigations, and Environmental Assessments conducted on behalf of Metro are available for Contractor's use to determine concentrations of hydrogen sulfide (H2S) and Benzene/Hydrocarbon/Gasoline (Benzene/HC) found along the construction route as indicated in Information Available to Bidders.

1.08 RESPONSIBILITIES OF CONTRACTORS A. Dewatering Fluid Treatment (DFT) Subcontractors: 1. Use specialized Dewatering Fluid Treatment (DFT) subcontractor. Contractor is fully

responsible to Metro for DFT operation.

2. Dewatering Fluid Treatment (DFT) subcontractor - Guarantee design, operation, and performance of Dewatering Fluid Treatment system. Design DFT system according to specified requirements certify DFT system as designed will meet NPDES limitations, and operate DFT system in compliance with NPDES effluent limitations.

3. Specified DFT system is an integrated system; provide by single qualified and experienced DFT subcontractor having total responsibility for Work of this Section. System design, fabrication, construction, start-up, operation, and testing - Performed by qualified personnel possessing necessary equipment and experience performing similar installations. Require DFT subcontractor to assure overall system performance as indicated.

4. Subcontract the Work under this Section to a qualified DFT Subcontractor to perform said Work but understand that this does not relieve the Contractor from responsibility under the Contract. Although many references made herein are to Work requirements and responsibilities of the DFT Subcontractor such references only mean that responsibility passes to the DFT Subcontractor but in the final analysis, responsibility rests with the Contractor.

5. Personnel employed for system engineering, supervision, start-up, operational testing and training - Regular employees of DFT Subcontractor. DFT Subcontractor fully responsible for technical supervision of installation to ensure installation is proper in all respects. Design - Sealed by California Registered Engineer experienced in groundwater system design.

6. Contractor - Include with bid proposal certification required above for proposed single DFT Subcontractor. Include certification in proposal form, signed by authorized responsible representative, and including the following statement:


a. (Name of Subcontractor) hereby certifies intent to assume and execute full responsibility to select, to furnish, to supervise installation and connection, to test, calibrate, validate, and operate required equipment needed to comply with Section 02 71 00, Dewatering Fluid Treatment (DFT).

b. In addition, it is understood that drawings and data will be prepared and submitted by qualified personnel. Specified field services will be performed by qualified personnel, and operating personnel will be instructed, fully trained, and properly licensed.

c. It is understood that the quotation offered provides for full and complete compliance with the requirements of Section 02 71 00, Dewatering Fluid Treatment (DFT) without exception.

B. As a minimum, Metro or its designee will provide Contractor with representative water

quality data, if available 1. If current data is not available, Contractor shall develop a groundwater sampling and

analysis plan for review and approval by Metro or its designee that characterizes constituent concentrations slated for removal/reduction in untreated groundwater

2. Design, fabricate, install, operate, and test DFT equipment needed to treat

dewatering fluids produced by Contractor’s dewatering operation.

C. Provide NPDES permit compliance testing as specified in permit by an independent certified laboratory experienced in the required analyses. Independent certified labor-atory - Approved by Metro or its designee, and responsible for sending a duplicate copy of analyses and reports directly to Metro or its designee. Prepare and submit to Metro or its designee for review, a copy of permit required compliance reports to Los Angeles Regional Water Quality Control Board (LARWQCB).

D. Provide operational testing and analyses performed either by independent certified testing laboratory or by DFT Subcontractor, and a written report certified as accurate by DFT Subcontractor, listing analyses and chemical usage rates, as specified, on a weekly basis.

PART 2 - PRODUCTS

2.01 DESIGN

A. Have DFT Subcontractor shall design treatment system as necessary to remove H2S and Benzene/HC/Gasoline from groundwater pumped during dewatering operations. Provide equipment, materials, and products necessary.

2.02 RECOMMENDED TECHNOLOGY


A. DFT Subcontractor shall design, construct, transport to Worksite, erect, operate, provide a routine groundwater analysis program, and maintain a groundwater treatment plant consisting of two technologies.

B. H2S removal technology consists of direct pipeline injection of hydrogen peroxide (H2O2),

with enough in pipe contact time to complete oxidation of H2S. Bench scale laboratory tests indicate oxidation up to 10 mg/L of H2S to sulfur is possible without exceeding effluent turbidity limitation.

C. Benzene/HC/Gasoline removal technology consists of a phase separation device followed by at least two granular activated charcoal (GAC) filters in series. When Benzene/HC breakthrough is detected for first filter, provide second filter capable of providing treatment until carbon is replaced in expended unit. Size GAC units so that carbon replacement will not be necessary in less than a two week interval.

PART 3 - EXECUTION

3.01 PREPARATION

A. Prepare Worksite(s) for locating DFT plant, and provide utility connections necessary to maintain operations. Move plant to new location, if necessary, as Work progresses.

B. Install facilities where they will not interfere with existing utilities or facilities, indicated utility relocations and other design features. Arrange discharge lines to facilitate taking water samples at each well head, prior to treatment, and at point of NPDES discharge compliance.

3.02 PERFORMANCE A. DFT Subcontractor - Use Utilize treatment technologies individually or in series (Phase

Separation/GAC prior to H2O2 injection) as quality of groundwater requires. If groundwa-ter testing data indicates one or both treatment technologies is not required, bring particular system off-line and Treatment Operation Cost, Chemical Cost, Carbon Cost, and Residue Disposal Costs will cease for the particular treatment technology not currently engaged. Maintain off-line treatment plant ready for immediate use should conditions warrant.

B. DFT Subcontractor - Make decision to place in service or remove from service one or both treatment technologies depending on current groundwater analyses. Decisions - Reviewed and accepted by the Metro or its designee.

C. Contractor - Provide flow meters, to measure both instantaneous and accumulated flow volume downstream of treatment facility and before discharge from Worksite. Meters - Accurate to 0.5 percent. A recorder and totalizer are required.

D. Overland surface flow of pumped effluent is not permitted.

3.03 OPERATIONAL TESTING AND ANALYSIS


A. Provide readily accessible sampling station in both water influent line upstream of treatment plant and water effluent line downstream of treatment facility and before discharge from Worksite.

B. As a minimum, conduct operational testing and analysis on a daily basis for first week of DFT system start-up and stabilization.

1. After first week of operations, testing frequency may be reduced to weekly.

2. Take representative samples and test; include following:

INFLUENT EFFLUENT pH pH H2S H2S Benzene Benzene (both first and second GAC

stages) TPH (Total Petroleum Hydrocarbon) TPH (both first and second GAC stages)

H2O2 residual Instantaneous & totalized flow turbidity

C. Conduct influent testing during dewatering operations regardless of whether or not either

treatment is being employed. Record effluent flows regardless of whether treatment is being employed. If the treatment is being employed for H2S removal, effluent testing for H2S and H2O2 residual conduct in addition to required influent testing. If treatment is being employed for Benzene/HC removal, conduct first and second stage GAC effluent testing for Benzene and TPH in addition to required influent testing.

D. Sampling protocols and sample preservation method - Meet requirements of Cal/EPA.

3.04 DISPOSAL OF RESIDUES/EFFLUENT

A. DFT Subcontractor - Use treatment technologies individually or in series (Phase Separation/GAC prior to H2O2 injection) as quality of groundwater requires. If groundwa-ter testing data indicates one or both treatment technologies is not required, bring particular system off-line and Treatment Operation Cost, Chemical Cost, Carbon Cost, and Residue Disposal Costs will cease for the particular treatment technology not currently engaged. Maintain off-line treatment plant ready for immediate use should conditions warrant.

B. DFT Subcontractor is responsible for proper removal and disposal both floating and settled residues from phase separation process and spent GAC. Provide trained personnel for these operations familiar with safety and legal aspects of handling hazardous wastes.

C. Dispose of effluent in closed conduits; do not damage public or private property or create a nuisance or health hazard. Connect closed conduits to existing storm drain system with sufficient capacity for flow.


D. DFT Subcontractor is responsible for ensuring residues are removed in safe and timely manner. Remove residues from Worksite immediately and treat, store and dispose of in a facility properly licensed to perform these functions. Delays associated with handling and disposing of residues are Contractor's responsibility.

3.05 RECORDS OF CHEMICAL USAGE

A. Maintain daily log of chemical and carbon usage showing usage rates in lb./day, gal/day, or some other convenient and accepted measure. Totalize information and make part of monthly payment report.

3.06 DUPLICATE TESTING AND ANALYSIS

A. Metro or its designee reserve the right to take samples at any time or to take a split sample with that taken by DFT Subcontractor to check accuracy of analyses. When Contractor's testing is determined to be inaccurate by Metro or its designee, Metro or its designee will use its own analysis to determine Contractor's payment. Metro or its designee - Sole judge as to testing accuracy and whose results to use for payment.

B. Where the Metro or its designee has determined Contractor's testing is inaccurate, the Metro's testing cost including sampling, analysis, testing, engineering, inspection, and transportation costs, will be back charged to Contractor's account.

3.06 WATER TREATMENT UNIT

A. Provisions to accommodate a trailer-mounted Metro-furnished Water Treatment Unit, of maximum dimensions of 70 feet long and 50 feet wide and 20 feet high and a 20,000 gallon capacity liquid storage tank with approximate dimensions 30 feet long and 10 feet wide and 15 feet high. The area selected by Contractor shall be approximately level and provide for reasonable truck access for maintenance and servicing of the storage tanks and Water Treatment Unit. Include a means to tie into the Contractor's existing water removal system downstream from any Contractor-furnished treatment system and either a pumped or gravity flow piping system to deliver the water to Metro-furnished Water Treatment Unit. Contractor shall also provide a gravity flow or pumped piping system to transport treated water from the Water Treatment Unit to a storm drain discharge and a bypass line so water from the Contractor-furnished water treatment system which meets NPDES Discharge Requirements is sent directly to storm drain.

END OF SECTION 02 71 00

Concrete Restoration 03 01 08 - 1 Baseline: 07/11/12

SECTION 03 01 08

CONCRETE RESTORATION

PART 1 - GENERAL

1.01 SECTION INCLUDES

A. Restoration of existing cast-in place and precast concrete, and self-leveling cementitious underlayment for existing floor surfaces; including placement procedures and finishes. Provide all labor, equipment and materials necessary to complete the following concrete repair work:

1. Cutting, chipping and preparation of all surfaces to receive patching compound.

2. Mixing and transportation of patching compound.

3. Repairs to delaminated and scaled areas of existing concrete.

4. Priming of repair areas and placement of patching compound.

5. Finishing and curing of patches.

6. Repair of cracks.




C. Section 01 43 38: Field Samples and Mock-Ups

D. Section 01 66 00: Product Storage and Handling Requirements

E. Section 03 05 15: Portland Cement Concrete

F. Section 03 30 00: Cast-In-Place Concrete

G. Section 03 45 00: Architectural Precast Concrete

H. Section 07 92 00: Joint Sealants

1.03 REFERENCES

A. American Society for Testing and Materials (ASTM):

1. ASTM C39 - Compressive Strength of Cylindrical Concrete Specimens

2. ASTM C109 - Compressive Strength of Hydraulic Cement Mortars (Using 2-in or [50mm] Cube Specimens)

3. ASTM C881 - Epoxy-Resin-Base Bonding System for Concrete


4. ASTM C882 - Bond Strength of Epoxy Resin System Used with Concrete by Slant Shear

5. ASTM C928 - Packaged, Dry Rapid-Hardening Cementitious Materials for Concrete Repairs

6. ASTM C1059 - Latex Agents for Bonding Fresh to Hardened Concrete

7. ASTM C1107 - Packaged Dry, Hydraulic-Cement Grout (Nonshrink)

8. ASTM D570 - Water Absorbtion of Plastics

9. ASTM D638 - Tensile Properties of Plastics

10. ASTM D648 - Deflection Temperature of Plastic Under Flexural Loads in the Edgewise Position

11. ASTM D695 - Compressive Properties of Rigid Plastics

12. ASTM D732 - Shear Strength of Plastics by Punch Tool

13. ASTM D790 - Flexural Properties of Unreinforced and Reinforced Plastics and Electrical Insulating Materials

B. Regulatory Requirements:

1. In addition to the foregoing referenced standards, the regulatory requirements which govern the work of this Section include the following code requirements:

2. California Code of Regulations (CCR), Title 24, Part 2 - California Building Code (CBC), Chapter 34, "Existing Structures."

C. AASHTO:

1. AASHTO M235-90 - Testing of epoxy resin adhesive



B. Manufacturing qualifications: The manufacturer of the specified product shall have in existence, for a minimum of 10 years, a program of training, certifying, and technically supporting a nationally organized approved contractor program with annual re-certification of its participants.

C. Contractor qualifications: Contractor shall be an Approved Contractor of the manufacturer of the specified product, who has completed a program of instruction in the use of the specified repair material with at least five years experience in the type of work involved, and provide a notarized certification from the manufacturer attesting to their approved contractor status.

1. At the discretion of Metro or its designee, bids shall be accepted from a contractor other than an approved contractor of the manufacturer of the specified product. Said contractors shall provide Metro or its designee with five job references where they have successfully repaired structural and non-structural cracks with the specified product.


D. Guarantee: The approved contractor of the manufacturer of the specified product and manufacturer shall provide the Metro or its designee with a joint and several guarantee on the application and product covered in this specification.

1. The manufacturer of the specified product shall be under no obligation to provide a guarantee on the specified product in this specification should Metro or its designee opt for a contractor other than an Approved Contractor of the manufacturer of the specified product.

E. Provide a certificate stating that the repair material meets the specified requirements and have the manufacturer's current printed literature on the specified product.

F. Field Construction Mock-Ups: Prior to start of general concrete restoration, prepare the following sample panels and sample areas on building where directed by Metro or its designee. Obtain Metro or its designee’s approval of sample before proceeding with the work. Retain accepted panels/sample areas AM in undisturbed condition, suitably marked, during restoration as a standard for judging completed work.

1. Cleaning: Demonstrate materials and methods to be used for cleaning for each type of concrete surface and condition on sample panels each approximately 25 sq. ft. in area. Test adjacent non-masonry materials for possible reaction with cleaning materials. Allow waiting period of duration indicated, but not less than 7 calendar days after completion of sample panels for negative reactions.

2. Paint, Graffiti, and Metallic stain removal: Demonstrate materials and methods to be used for paint, graffiti, and stain removal for each type of surface and condition on sample panel 4 sq. ft. in area. The removal method or methods shall be tested on an inconspicuous area of the building.

3. Crack Repair: Prepare a sample area for each type of crack repair required for stone (i.e. hairline cracks and microscopic cracks 1/64 to 1/16" in size; cracks and voids larger than 1/8"). Repair shall demonstrate methods and quality of workmanship expected for crack repair.

4. Patching: Prepare on-building sample of each type of construction to be patched, rebuilt and/or replaced (e.g. one balcony surface, one deck area, one cornice unit, one window sill; one wall area). Patching shall demonstrate methods and quality of workmanship expected of repair work.

5. The samples of each type of repair work shall be done in an area that will be exposed to the same weathering conditions as the building. Allow samples to cure at least three days before obtaining acceptance of color, texture and detailing match. Samples shall be viewed from an approved distance.

6. Source of Materials: Obtain materials for Patching, coating, sealing and crack repair from a single source manufacturer to ensure match quality, color, texture and detailing.

1.05 SUBMITTALS

A. Refer to Section 01 33 00 – Submittals Procedures, for submittal requirements and procedures.

B. Product Data: Submit manufacturer's technical data for each product indicated including recommendations for their application and use. Include test reports and certifications substantiating that products comply with requirements.


C. Submit the following items in time to prevent delay of the work and to allow adequate time for review and resubmittals, if needed. Do not order materials or start work before receiving the written approval.

D. Samples of all specified materials and Material Safety Data Sheets (MSDS) as appropriate.

E. Certificates, except where the material is labeled with such certification, by the producers, of the materials, that all materials supplied comply with all the requirements of these specifications and the appropriate standards.

F. Custom-matched patch samples, fabricated on pieces of appropriate masonry from or on the building using the specified repair mortar as required.

G. Provide purchase orders, shipping tickets, receipts, etc. to prove that the specified materials were ordered and received.

H. Restoration Program: Submit written program for each phase of restoration process including protection of surrounding material on building and site during operations. Provide detail description of material, methods and equipment to be used for each phase of restoration work.

1. If alternative methods and materials to those indicated are proposed for any phase of restoration work, provide written description, including evidence of successful use on other, comparable projects, and program of testing to demonstrate effectiveness for use on this project.



A. The station or building involved in this work will be in continuous operation during the construction period. This will require that the Contractor plan the Work carefully to work around unavoidable obstacles in the prosecution of the Work. It will require further that the Contractor complete some new construction facilities required in the renovation work before proceeding with the concrete restoration work.

B. Provide additional temporary facilities as may be required to facilitate continuous, unobstructed station or building operations during transitional construction work.

C. Environmental Conditions: Do not apply material if it is raining or if rain appears to be imminent.

D. Protection: Precautions should be taken to avoid damage to any surface near the work zone due to mixing and handling of the specified repair material.

1.08 DELIVERY, STORAGE, AND HANDLING

A. Refer to Section 0166 00 – Product Storage and Handling Requirements, for general requirements for product delivery, storage, and handling procedures.


B. Deliver materials to site in manufacturer's original unopened containers and packaging, bearing labels as to type and names of products and manufacturers.

C. Deliver and store restoration material in manufacturer's original, unopened containers with the grade, batch and production data shown on the container or packaging.

D. Protect restoration materials during storage and construction from wetting by rain, snow or ground water, and from staining or intermixture with earth or other types of materials.

E. Protect grout, mortar and other materials from deterioration by moisture and temperature. Store in a dry location or in waterproof containers. Keep containers tightly closed and away from open flames. Protect liquid components from freezing. Comply with manufacturer's recommendations for minimum and maximum temperature requirements for storage.

F. Comply with the manufacturer's written specifications and recommendations for mixing, application, and curing of grouts and patching materials.

1.09 RESPONSIBILITIES OF CONTRACTOR

A. Protect persons, vehicles, building site and surrounding buildings from injury resulting from concrete restoration work.

B. Clean masonry surfaces only when air temperatures are above 40°F and will remain so until concrete has dried out, but for not less than 7 days after completion of cleaning.

C. Do not perform any patching unless air temperatures are between 40°F and 86°F and will remain so for at least 48 hours after completion of work.

D. Do not perform any patching work if precipitation rain is expected. In case of unexpected precipitation, work shall cease and all uncured material shall be adequately protected with an impermeable polyethylene sheet.

E. If either the ambient or subsurface temperature is expected to fall between 35°F and 40°F during curing and ultimate drying of the patching compound, then the cold weather precautions outlined in item 7, below, of this section of the specification shall be followed.

F. If ambient or surface temperature is expected to rise above 86°F during application and curing of the patching compound, then the hot weather precautions outlined in item H of this section of the specifications shall be followed.

G. Cold Weather Precautions:

1. SYSTEM 44-FS grades shall be substituted for SYSTEM 44 Regular grades. Do not mix or place different grades together.

2. Curing times shall be extended to compensate for lower temperature cure.

3. Do not proceed if temperatures will drop below freezing before patching compound has reached final set. Any material disrupted by early freezing must be removed and replaced under appropriate controls or conditions.


4. If auxiliary heating will be used to protect freshly placed materials from freezing, equipment must not directly vent exhaust gases onto the repair materials or into repair enclosure air. This may cause carbonation and low strength. Use moderate temperatures and heated air or radiant heat.

H. Hot Weather Precautions:

1. SYSTEM 44 Regular grades shall be substituted for FS grades. Do not mix or place different grades together.

2. All materials shall be kept cool, stored out of direct sun.

3. Precooling of subsurface shall be carried out by continuous wetting at least one hour before placing patching compounds. This shall be done by covering or draping the entire repair area with burlap and by continuously keeping the burlap wet. The burlap shall be removed just prior to the patching of each area, as work proceeds.

4. In hot, dry, windy weather, repair areas shall be covered or draped with burlap for a minimum of 3 hours after patch placement, to avoid rapid drying of the patches. Maximum wet cure time shall not exceed 24 hours.

I. Prevent masonry patching materials from staining the face of other surfaces to be left exposed. Immediately remove all patching materials that come in contact with such surfaces.

J. Cover partially completed work when work is not in progress.

K. Protect sills, ledges and projections from droppings.

1.10 SEQUENCING / SCHEDULING

A. Perform concrete restoration work in the following:

1. Remove paint, stains and plant material from all surfaces.

2. Remove existing unsound materials from areas indicated to be restored.

3. Pressure wash building and repair surfaces as indicated.

4. Patch and repair existing concrete structures as indicated.

5. Provide consolidation/water repellent treatment for concrete structures as indicated. 6. Provide special coating over indicated sections as specified.

PART 2 - PRODUCTS

2.01 EPOXY

A. Provide epoxy grout for restoration of concrete with following performance criteria:

B. Properties of the mixed epoxy resin adhesive used for the \pressure injection grouting:

1. Pot Life: 20-30 minutes

2. Tack -Free Time to Touch (3-5 mils): 5-7 hours

3. Initial Viscosity (Brookfield Viscometer, Spindle #2, Speed 100): 300-450 cps.


4. Color: clear, amber

C. Properties of the cured epoxy resin adhesive used for the pressure injection grouting:

1. Compressive Properties (ASTM D-695) at 28 days

a. Compressive Strength: 10,000 psi min.

b. Modulus of Elasticity: 300,000 psi min.

2. Tensile Properties (ASTM D-638) at 14 days

a. Tensile Strength: 7000 psi min.

b. Elongation at Break: 3-5%

c. Modulus of Elasticity: 340,000 psi min.

3. Flexural Properties (ASTM D-790) at 14 days

a. Flexural Strength (Modulus of Rupture): 12,000 psi min.

b. Tangent Modulus of Elasticity in Bending: 300,000 psi min.

4. Shear Strength (ASTM D-732) at 14 days: 4500 psi min.

5. Total Water Absorption (ASTM D-570) at 7 days: 1.5% max. (2 hour boil)

6. Bond Strength (ASTM C-882) Hardened Concrete to Hardened Concrete

a. 2 day (dry cure): 2400 psi min.

b. 14 day (moist cure): 2300 psi min.

7. Deflection Temperature (ASTM D-648) at 14 days: 108F min. (fiber stress loading = 264 psi)

8. The epoxy resin adhesive shall conform to ASTM C-881, and AASHTO M235-90

9. The epoxy resin adhesive shall be approved by the United States Department of Agriculture

2.02 CAP SEAL

A. Cap seal shall have the following performance criteria:

B. Properties of the mixed epoxy resin adhesive used for the sealing of cracks and porting devices:

1. Pot Life: 25-45 minutes

2. Tack-Free Time to Touch: 2-3 hours

3. Consistency (1/2 in. thick): non-sag

4. Color: gray

C. Properties of the cured epoxy resin adhesive used for the sealing of cracks and porting devices:

1. Compressive Properties (ASTM D-695) at 28 days

a. Compressive Strength: 10,000 psi min.

b. Modulus of Elasticity: 700,000 psi min.


2. Tensile Properties (ASTM D-638) at 14 days

a. Tensile Strength: 3000 psi min.

b. Elongation at Break: 0.3% min.

c. Modulus of Elasticity: 630,000 psi min.

3. Flexural Properties (ASTM D-790) at 14 days

a. Flexural Strength (Modulus of Rupture): 3700 psi min.

b. Tangent Modulus of Elasticity in Bending: 850,000 psi min.

4. Shear Strength (ASTM D-732) at 14 days: 2800 psi min.

5. Total Water Absorption (ASTM D-570) at 7 days: 1.0% max. (2 hour boil)

6. Bond Strength (ASTM C-882) Hardened Concrete to Hardened Concrete

a. 2 day (dry cure): 2800 psi min.

b. 14 day (moist cure): 2000 psi min.

7. Deflection Temperature (ASTM D-648) at 14 days: 104F min. (fiber stress loading - 264 psi)

8. The epoxy resin adhesive shall conform to ASTM C-881, Type I, Grade 3, Class B and C

9. The epoxy resin adhesive shall be approved by the United States Department of Agriculture.

2.03 NON-SHRINK CEMENTITIOUS GROUT

A. Non-shrink cementitious grout shall be used for crack widths larger than 3/16 inch and shall meet the following performance criteria:

B. Properties of the mixed portland cement grout:

1. Time of Set (ASTM C-191)

a. Initial Set: 3.0 hours min.

b. Final Set: 6.5 hours max.

2. Flow (CRD C-62I): 100-124%

3. Color: concrete gray

4. The grout shall not exhibit bleeding.

5. The grout shall not segregate.

6. The grout shall be pumpable through standard grout pumping equipment.

C. Properties of the cured portland cement grout:

1. Compressive Strength (CRD C-621)

a. 1 day: 3800 psi min.

b. 28 day: 7600 psi min.

2. Splitting Tensile Strength (ASTM C-496) at 28 days: 500 psi min.


3. Flexural Strength (ASTM C-580) at 28 days: 1200 psi min.

4. Bond Strength (ASTM C-882 Modified) Plastic grout to hardened concrete at 28 days (moist cure): 1950 psi min.

5. Expansion (CRD C-621) at 28 days: +0.015% min.

D. The grout shall exhibit expansion when tested in accordance to ASTM C-827.

E. The grout shall exhibit positive expansion when tested in accordance to ASTM C-827.

F. The grout shall conform to United States Army Corps of Engineers Specifications CRD C-621.

G. The grout shall be approved by the United States Department of Agriculture.

2.04 POLYMER-MODIFIED PORTLAND CEMENT MORTAR

A. Polymer-modified portland cement mortar shall be used for spall repair and shall meet the following performance criteria:

B. Properties of the mixed polymer-modified portland cement mortar:

1. Working Time: 10-15 minutes

2. Finishing Time: 20-60 minutes

3. Color: concrete gray

C. Properties of the cured polymer-modified portland cement mortar shall be as specified below:

1. Compressive Strength (ASTM C-109 Modified)

a. 4 hour: 250 psi min.

b. 1 day: 3800 psi min.

c. 28 day: 7200 psi min.

D. Splitting Tensile Strength (ASTM C-496) at 28 days: 850 psi min.

E. Flexural Strength (Modulus of Rupture)(ASTM C-78) at 28 days: 1650 psi min.

F. Rapid Freeze/Thaw Durability (ASTM C-666; Procedure A)

1. Relative Durability Factor at 300 cycles: 90 min.

G. Bond Strength (ASTM C-882 Modified) at 28 days: 2500 psi min.

H. Thermal Compatibility (ASTM C-884 Modified): passes test min.

I. Abrasion (Taber Abrader) at 7 days

1. Weight Loss: 8.9 gm max. (H-22 wheel; 1000 gm load; 1000 cycles)

J. The portland-modified portland cement mortar shall be approved by the United States Department of Agriculture.


K. The polymer-modified portland cement mortar shall not produce a vapor barrier.

2.05 CLEANING AGENT

A. Mild solution of hydrochloric acid or muriatic acid, for washing of stubborn stains on concrete.

2.06 PAINT

A. Paint for touchup work shall be an exterior acrylic-latex masonry paint, flat texture, color as required to match adjacent surfaces.

2.07 COMPONENTS

A. Epoxy resin adhesive for pressure injection of cracks

1. Component "A" shall be a modified epoxy resin of the epichiorohydrin bisphenol A type containing suitable viscosity control agents. It shall not contain butyl glyoidyl ether.

2. Component "B" shall be an aliphatic diamine containing suitable viscosity control agents and accelerators.

3. The ratio of Component "A":Component "B" shall be 2:1 by volume.

B. The epoxy resin adhesive for the sealing of cracks and porting devices.

1. Component "A" shall be a modified epoxy resin of the epichiorohydrin bisphenol A type containing suitable viscosity control agents and pigments. It shall not contain butyl glyoidyl ether.

2. Component “B” shall be primarily a reaction product of a selected amine blend with an epoxy resin of the epichiorohydrin bisphenol A type containing suitable viscosity control agents, pigments and accelerators.

3. The ratio of Component "A":Component "B" shall be 2:1 by volume.

4. The material shall not contain asbestos.

C. Porting devices as required for either manual or automated application. Porting devices for automated application shall be supplied from the manufacturer of the pressure injection equipment.

D. Portland cement grout

1. The portland cement grout shall be a non-shrink, non-metallic composition containing a blend of selected portland cements, plasticizing/water-reducing admixtures and shrinkage compensating agents. The shrinkage agents shall compensate for shrinkage in both the plastic and hardened state.

E. Materials for forming, as required for the designated work, shall be approved by the Engineer.

F. Curing compound, conforming to ASTM C-309, as required for the designated work, shall be approved by the Engineer.


G. Polymer-modified portland cement mortar

1. Component A shall be a liquid polymer emulsion of an acrylic copolymer base and additives. This acrylic copolymer shall have the following properties:

a. pH: 4.5 - 6.5

b. Film Forming Temperature: 73F max.

c. Tear Strength: 950 psi min.

d. Elongation at Break: 500% min.

e. Particle Size: less than 0.1 micron

2. Component B shall be a blend of selected portland cements, specially graded aggregates, admixtures for controlling setting time, water reducers for workability, a corrosion

3. The ratio of Component A: Component B shall be 1:5.2 by weight and 1:7.2 by weight

4. The material shall not contain asbestos, chlorides, nitrates, . added gypsum, added lime, or high aluminum cements.

5. The material shall be non-combustible, either before or after cure.

6. The polymer-modified portland cement mortar shall be supplied in a factory proportioned unit.

7. The polymer-modified portland cement mortar must be placeable from 1/8 inch to 1-1/2 inch in depth per lift.

PART 3 - EXECUTION

3.01 EXAMINATION

A. Use the following repair criteria as a function of crack width:

1. For crack widths less than or equal to 1/32": No repair work required.

2. For crack widths greater than 1/32" and less than or equal to 3/16”: Use epoxy injection.

3. For crack widths greater than 3/16" and less-than or equal to 1/2": Use non-shrink grout injection.

4. For crack widths greater than 1/2": Use spall repair.

B. Do not cut or alter structural members when not indicated without prior approval of Metro or its designee.

C. Finish or refinish as required to match adjacent finishes.

3.02 SURFACE PREPARATION

A. Cracks: The cracks and adjacent substrate must be cleaned and made sound with a wire brush by hand or other methods. Remove dust, laitance, grease, curing


compounds, waxes, impregnations, foreign particles, efflorescence and other bond inhibiting materials from the cracks by mechanical means.

1. For epoxy injection, repair area may be dry or damp, but free of standing water prior to product application.

2. For non-shrink comentitiouos grout insure that repair area is not less than 1/2" in width. Prior to product application the surface should be brought to a saturated surface condition.

B. Spalls:

1. The surface must be mechanically prepared. Areas to be repaired must be clean, sound and free of contaminants. All loose and deteriorated concrete shall be removed by mechanical means approved by Metro or its designee. Saw cut perimeter 1/2" maximum. Chip concrete substrate to obtain a surface profile of (±1/16", ±1/8")* in depth with a new fractured aggregate surface. Be sure the area to be repaired is not less than 1/8" to 1/2".* Where reinforcing steel with active corrosion is encountered, the following procedures will be used: sandblast reinforcing steel to remove all contaminants and rust. Determine section loss, splice where more than 15-25% loss as directed by Metro or its designee. If half of the diameter of the rebar is exposed, chip out behind the reinforcing steel, 1/2" minimum for mortar only and 3 times the largest aggregate size for extended mixes.

2. When forms are applicable, all forms should retain repair material without leakage. Forms should be lined or coated with release agent for easy removal. All form work shall be approved by Metro or its designee.

3. Cracks in the substrate in the area of the patching or overlay work must be treated as directly by Metro or its designee.

4. Extend all existing control and expansion joints through any patch or overlay. Install new joints as directed by Metro or its designee. Fill all joints as directed by Metro or its designee.

5. Refer to ACI criteria for recommendation on the specific product to be used.

Reference: ACI 318 "Splicing" ACI 347 "Formwork" ACI 546.1 "Guide for Repair of Concrete Bridge Superstructures”

3.03 CRACK REPAIR USING EPOXY OR NON-SHRINK GROUT INJECTION

A. Mixing of material

1. Epoxy

a. Epoxy resin adhesive for sealing cracks and porting devices.

1. Manual: Premix each component. Proportion equal parts by volume of Component "A" and Component "B" into a clean, dry mixing pail. Mix for 3 minutes min. with a jiffy paddle on a low-speed (400-600 rpm) drill. Mix only that quantity of material that can be used within its pot life (25-45 minutes at 73°F).

2. Automated: The injection equipment is used to meter and mix the two components of the epoxy resin adhesive and dispense the product onto the


prepared substrate and around the porting devices. The unit shall be portable and be equipped with positive ratio control of exact proportions of the two components of the epoxy resin adhesive at the nozzle. The pumps shall be air powered or electric and shall provide an in-line mixing and metering system and shall contain drain-back plugs.

b. Epoxy resin adhesive for pressure injection grouting:

1. Manual: Premix each component. Proportion two parts of Component "A" to one part Component "B" by volume into a clean, dry mixing pail. Mix thoroughly for 3 minutes min. with a jiffy paddle on a low speed (400-600 rpm) drill. Mix only that quantity of material that can be used within its pot life (20-30 minutes at 73°F).

2. Automated: The injection equipment is used to meter and mix the two components of the epoxy resin adhesive and dispense the product into the prepared cracks. The unit shall be portable and be equipped with positive displacement-type pumps with interlock to provide positive ratio control of exact proportions of the two components of the epoxy resin adhesive at the nozzle. The pumps shall be air powered on electric and shall provide an in-line mixing and metering system and shall contain drain-back plugs.

2. Non-shrink cementitious grout

a. Portland cement grout:

1. Mix manually or mechanically. Manually mix in a wheelbarrow or mortarbox. Mechanically mix with a low-speed (400-600 rpm) drill and jiffy paddle or in an appropriate sized mortar mixer. Add an appropriate quantity of water to the mixing container to achieve the desired consistency. DO NOT OVERWATER. While mixing the bag of powder is slowly added to the mixer. Mix to a uniform consistency of a minimum of 2 minutes. Mix temperature should be maintained at 70°F-75°F, using cold or warm water accordingly.

B. Application - Epoxy injection and non-shrink grout injection:

1. Epoxy injection

a. The epoxy resin adhesive for sealing the cracks and porting devices:

1. Set porting devices as required by the manufacturer. Spacing of the porting devices should not exceed the thickness of the substrate. Spacing of the porting devices shall be accomplished as required to achieve the travel of the epoxy resin adhesive for the pressure injection grouting between ports and fill the cracks to the maximum. On structures open on both sides, provide porting devices on opposite sides at staggered elevations. Apply the mixed epoxy resin adhesive for sealing over the cracks and around each porting device to provide an adequate seal to prevent the escape of the epoxy resin adhesive for the injection grouting. Where required by Metro or its designee, apply the epoxy resin adhesive for sealing in such a manner that minimal defacing or discoloration of the substrate shall result.

b. The epoxy resin adhesive for the pressure injection grouting.

1. Manual: Load the mixed epoxy resin adhesive for grouting into a disposable caulking cartridge or bulk-loading caulking gun.' Inject the prepared cracks with a constant pressure in order to achieve maximum filling and penetration without the inclusion of air pockets or voids in the epoxy resin adhesive.


Begin the pressure injection at the lowest port and continue until there is the appearance of the epoxy resin adhesive at an adjacent port, thus indicating travel. When travel is indicated, to discontinue or continue the pressure injection from that port should be made by the contractor, based on their experience, with the approval of Metro or its designee. Continue the procedure until all pressure injectable cracks have been filled.

2. Automated: Dispense the epoxy resin adhesive for grouting under constant pressure in accordance with procedures recommended by the equipment manufacturer or as required to achieve maximum filling and penetration of the prepared cracks without the inclusion of air pockets or voids in the epoxy resin adhesive. The pressure injection of single or multiple, ports, by the use of a manifold system, is possible. This decision should be made by the contractor, based upon their experience, with the approval of Metro o rits designee. Continue the approved procedure until all pressure injectable cracks have been filled.

c. If penetration of any cracks is impossible, notify the Inspector of Record within 24 hours of discontinuing the injection procedure. If modification of the proposed procedure is required to fill the cracks, submit said modification in writing to Metro or its deisgnee for acceptance prior to proceeding.

d. Adhere to all limitation and cautions for the epoxy resin adhesives in the manufacturers current printed literature.

e. Clean up

1. After the epoxy resin adhesive for grouting has cured, removal of the epoxy resin adhesive for sealing and porting devices shall be removed as required by Metro or its designee. Clean the substrate in a manner to produce a finish appearance acceptable to Metro or its designee.

2. The uncured epoxy resin adhesives can be cleaned from tools with an approved solvent. The cured epoxy resin adhesive can only be removed mechanically.

3. Leave finished work and work area in a neat, clean condition without evidence of spillovers onto adjacent areas.

2. Non-shrink cementitious grout injection.

a. Within 15 minutes of mixing pump the grout into the prepared crack under constant pressure until there is appearance of the grout at an adjacent port, thus indicating travel. When travel is indicated cap off original port and move to adjacent port and continue pumping the grout. A decision to discontinue or continue the pressure injection from the original port should be made by the contractor based on their experience, with approval from Metro or its designee. Continue the procedure until all injectable cracks have been filled. After the grout has achieved its final set, remove any forms and trim or shape to the desired profile, if required.

b. Wet cure for a minimum of 3 days or apply a curing compound that conforms to ASTM C-309 as approved by Metro or its designee.

c. Adhere to all limitation and cautions for the portland cement, non-shrink, non-metallic grout in the manufacturers printed literature.

d. Clean up


1. The uncured portland cement grout can be cleaned from tools with water. The cured portland cement grout can only be removed mechanically.

2. Leave finished work and work area in a neat, clean condition without evidence of spillovers onto t areas.

3.04 SPALL REPAIR

A. Mixing of material.

1. Non-shrink cementitious grout.

a. Mix manually or mechanically. Manually mix in a wheelbarrow or mortarbox. Mechanically mix with a low-speed (400-600 rpm) drill and jiffy paddle or in an appropriate sized mortar mixer. Add an appropriate quantity of water to the mixing container to achieve the desired consistency. DO NOT OVERWATER. While mixing the bag of powder is slowly added to the mixer. Mix to a uniform consistency of a minimum of 2 minutes. Mix temperature should be maintained at 70°F-75°F, using cold or warm water accordingly.

2. Polymer modified portland cement mortar.

a. Mix manually or mechanically. Manually mix in a wheel barrow or mortar box. Mechanically mix with a mud paddle and low speed (400-600 rpm) drill. Pour approximately 4/5 gal Component A into the mixing container. Add Component B while continuing to mix. Mix to a uniform consistency for a maximum of three minutes. Add remaining Component A to mix if a more loose consistency is desired. If manual mixing takes more than three minutes, mix small quantities. Should smaller quantities be needed, be sure the components are dosed in the correct ratio and that the Component B is uniformly pre-mixed before batching.

B. Application - Spall Repair:

1. Non-shrink cementitious grout placement procedure.

a. Within 15 minutes of mixing pump the grout into the prepared form. Work in a manner to avoid air entrapment with a variable pressure pump. Vibrate the form while pumping, as required, to achieve flow and compaction. Flowable grout must be confined in either the horizontal or vertical direction leaving a minimum of exposed surface. After the grout has achieved its final set, remove any forms and trim or shape to the desired profile if required.

b. Wet cure for a minimum of 3 days or apply a curing compound that conforms to ASTM C-309 as approved by Metro or its designee.

c. Adhere to all limitation and cautions for the portland cement, non-shrink, non-metallic grout in the manufacturers printed literature.

2. Polymer modified portland cement mortar placement procedure.

a. At the time of application, the substrate should be saturated surface dry with no standing water. Mortar must be scrubbed into substrate filling all pores and voids. While he scrub coat is still plastic, force material against edge of repair, working toward center. After filling, consolidate, then screed. Allow mortar to set to desired stiffness. Then finish with trowel for smooth surface. Wood float for rough surface. Areas where the depth of the repair to sound concrete, is greater than 1-1/2 in.; repair will be made in lifts of 1-1/2 in. maximum thickness. The top surface of each lift shall be scored so as to produce a roughened surface for the


next lift. The preceding lift should be allowed to reach final set before applying fresh material. The fresh mortar must be scrubbed into the preceding lift. There is no limit to the number of lifts that may be used.

b. As per ACI recommendations for portland cement concrete curing is required. Only when ambient conditions of moisture, humidity, temperature and wind are sufficiently favorable is curing optional. Moist cure with wet burlap and polyethylene, a fine mist of water or water based* compatible curing compound. Moist curing should commence immediately after finishing. If necessary protect newly applied material from rain. To prevent from freezing, cover with insulating material.

Setting time is dependent on temperature and humidity.

∗ Pretesting of curing compound is recommended.

c. Adhere to all limitations and cautions for the polymer-modified portland cement mortar in the manufacturers current printed literature.

d. Clean-up

1. The uncured portland cement grout can be cleaned from tools with water. The cured portland cement grout can only be removed mechanically.

2. The uncured polymer-modified portland cement mortar can be cleaned from tools with water. The cured polymer-modified portland cement mortar can only be removed mechanically.

3. Leave finished work and work area in a neat, clean condition without evidence of spillovers onto adjacent areas.

4. After the concrete patches have cured a minimum of 3 days, the Contractor shall any irregularities or departures from a plane surface by grinding, rubbing with a carborundum stone or other means approved by Metro or its designee.

3.05 TESTING

A. Epoxy

1. Epoxy samples are to be taken every 30 minutes during injection. Epoxy shall be placed in a small container and the set-up time compared with the performance criteria. If set-up time differs contact structural engineer before further application.

2. Contractor shall be required to take core tests to check the penetration of the epoxy.

a. 6 inch minimum diameter by full wall thickness cores will be required at locations selected by structural engineer in concurrence with Metro Quality Control Inspector.

b. Cores will be taken every 100 linear feet of treated cracks or as otherwise directed by the structural engineer.

c. If any reinforcing steel is contacted during the core drilling, the contractor shall cease drilling and relocate the core drill to clear the reinforcing steel.

d. When a core demonstrates that the epoxy has penetrated less than 90 percent of the crack volume within the core, the work shall be deemed as not meeting the requirements of these specifications, and the Contractor shall submit a proposal for the purpose of achieving 90 percent penetration at such locations for the Engineer's approval. The proposal shall consist of an improved method of epoxy


reinjection and/or concrete removals and patchings. This proposal shall indicate the limits of rework.

e. All resulting core holes shall be filled with non shrink grout or other approved structural patch. Minimum required patch strength shall not be less than 5000 psi.

3.06 INSPECTION

A. General: A manufacturer’s representative shall inspect all repair procedures and verify that the work is in conformance with these specifications.

B. Continuous special inspection shall be required for installation of cap seal and epoxy injection by a licensed inspector approved by Metro Quality Control Manager.

C. Inspection shall include the following items:

1. Written contractor certification by epoxy manufacturer prior to beginning repair work.

2. Verification of epoxy set-up time using pressure injection equipment prior to epoxying any cracks at the beginning of each day and any time after the equipment has been turned back on after being shut-off, see testing.

3. Check for leakage of epoxy from under the cap seal and cementitious grout from under form and cementitious grout.

4. Monitoring of epoxy flow through injection ports for determining when to cap-off lower injection ports and move to upper adjacent injection ports.

5. Core sample within 48 hours of first epoxy or cementitious grout injection to verify penetration. See testing. Verification of epoxy and cementitious grout injection for all core samples is required.

3.07 CLEANING

A. Where existing concrete surfaces are indicated to be cleaned or washed to remove dirt, dust, and stains, such surfaces shall be washed clean to an even and uniform effect, free of stains

SECTION SECTION TITLE DIVISION 02 - EXISTING CONDITIONS … · 2014-09-25 · metro baseline...

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Transcript of SECTION SECTION TITLE DIVISION 02 - EXISTING CONDITIONS … · 2014-09-25 · metro baseline...