Detailing : Interior Wall Assemblies
-
Upload
todd-wyatt -
Category
Documents
-
view
28.928 -
download
1
Transcript of Detailing : Interior Wall Assemblies
eu:a eppstein uhen architects 1
Interior Wall Assembliesp r e s e n t a t i o n
D E T A I L I N G S E M I N A R
eu:a eppstein uhen architects 2
OUTLINE Types of …
Studs Gypsum Board Walls
Detailing Objectives
Resources Spec Sections Suppliers &
Associations Codes & Standards Imperial Library (WIP)
eu:a eppstein uhen architects 3
Types of … STUDS Section 09 22 16 : Non-Structural Metal
Framing Interior framing systems
Partition Walls, Furred Walls, Framed Soffits, Etc. Approximately 60% of metal studs used in the U.S
Interior suspension systems Supports for ceilings, Suspended Soffits, Etc.
Section 09 21 16 . 23 : Gyp Bd Shaft Wall Assemblies Enclosures : Shaft-wall, Chase, Stair, Horizontal
Section 05 40 00 : Cold-Formed Metal Framing Exterior load-bearing wall framing. Interior load-bearing wall framing. Exterior non-load-bearing wall framing. Framing : Floor joist + Roof + Roof rafter + Ceiling joist
eu:a eppstein uhen architects 4
Interior Framing Systems Partition Walls
“C” studs 1-5/8”, 2-1/2”, 3-5/8”, 4”, 6”
Top & Bottom Tracks (Slip-Type) Single or Double-runners
Shaft Walls C-H
Furring Channels Cold Rolled Channels : 1/2”x 3/4” Steel Studs : 1-5/8”, 2-1/2”, 3-5/8” Hat-shaped (Rigid) : 7/8”, 1-1/2” Resilient Furring Channels : 1/2” Z-Shaped Channels : 1”, 1-1/2”, 2”, 2-
1/2”, 3”
Miscellaneous Blocking : Flat strap & Backing Plate Bridging Isolation Strips : Felt or Foam Gasket
eu:a eppstein uhen architects 5
Interior Framing Systems : Tracks
eu:a eppstein uhen architects 6
Interior Framing Systems : Channels
eu:a eppstein uhen architects 7
Interior Framing Systems : Blocking
eu:a eppstein uhen architects 8
Interior Framing Systems : Blocking
eu:a eppstein uhen architects 9
Interior Framing Systems : Shafts
eu:a eppstein uhen architects 10
Height & Gauge & SpacingLower the gauge = the heavier and thicker the stud 20 gauge studs are thicker than 25 gauge studs … 25 gauge is the lightest or thinnest
material available.
Steel Studs and Runners: ASTM C 645 Minimum Base Metal Thickness: 25 gauge Where partition height requires heavier section, to accommodate span within L:240 deflection at load of
5 PSF, use heavier stud. Select 16” or 24” to fill in the blank for each project. Specify spacing as inches o.c. typical unless noted
otherwise..
Example 3-5/8” Metal Stud Spacing and Gauge Table:
Maximum Height Gauge Spacing:17’-11” 20 Gauge @ 16” O.C.15’-4” 25 Gauge @ 16” O.C.15’-7” 20 Gauge @ 24” O.C.13’-6” 25 Gauge @ 24” O.C.
Notes:a. Over 17’-11” long, use structural studs or drywall studs with depths over 3’-5/8”. b. At jamb openings provide (2) 20 gauge studs, minimum.c. At cement backer board, provide 20 gauge studs, minimum.d. For walls scheduled for ceramic tile: Utilize L/360 deflection at load of 5 PSF.e. For lead-lined drywall, provide 20 gauge minimum with a maximum spacing of 16” on center.
Submit engineering calculations for stud gage and spacing with shop drawing submittals for all lead-lined drywall applications.
eu:a eppstein uhen architects 11
Types of … GYPSUM BOARD Section 092900 : Gypsum Board
Interior Gypsum Board Tile Backing Panels Exterior Gypsum Board
Section 092116.23 : Gyp Bd Shaft Wall Assemblies
Section 092300 : Gypsum Plastering Section 092400 : Portland Cement Plastering Section 092613 : Gypsum Veneer Plastering Section 092713 : Glass-Fiber-Reinforced Plaster
Fabrications
eu:a eppstein uhen architects 12
Types of … GYPSUM BOARD Interior Gypsum Board
Regular Type : 1/4”, 3/8” & 1/2” Type X : 5/8” Special Type X (C) : 1/2” & 5/8” Flexible Type : 1/4” Ceiling Type : 1/2” Foil-Backed Type : 3/8”, 1/2” & 5/8” Abuse/Impact Resistant Type : 1/2” & 5/8” Moisture-and Mold-Resistant : 5/8”
Others? Lead-lined DensGlass Gold : accelerated schedule
Tile Backing Panels Water-Resistant Gypsum Backing Bd : 1/2” & 5/8” Glass Mat, Water-Resistant Backing Bd : 1/2” & 5/8” Cementitious Backer Units : 1/2”
Exterior Gypsum Board Ceilings & soffits
eu:a eppstein uhen architects 13
Interior Gypsum Board A. Type X, 5/8 inch thick.
B. Type C Thickness: As required by fire-resistance-rated assembly indicated on Drawings. Type C is a gypsum board enhanced with glass fibers and other ingredients for
premium fire protection. The board has a naturally non-combustible gypsum core and paper facings. Because of its strengthened, fire-resistant core, Type C can remain intact for a prolonged period during a fire, preventing further spread of flames and smoke.
Type C is suitable for interior applications only, and should not be used in areas of extreme humidity. Likewise, the board should be protected from exposure to adverse conditions during storage and construction.
Type C meets all the requirements of Type X Type X does not meet all of the requirements of Type C.
C. Flexible Type: Manufactured to bend to fit radii and to be more flexible than standard regular-
type gypsum board of same thickness, Type X, 1/4 inch thick.
D. Ceiling Type: Manufactured to have more sag resistance than regular-type gypsum board, Type
X, 5/8 inch thick. (Provide moisture-resistant type at wet areas.)
E. Foil-Backed Type, 5/8 inch thick, Type X.
eu:a eppstein uhen architects 14
Interior Gypsum BoardF. Abuse-Resistant Type:
Manufactured with fiberglass mat in lieu of paper to produce greater resistance to damage such as scuffs, scratches, dents, and abrasion, Type X gypsum board.
G. High-Impact Type: Same as Abuse-Resistant Type except with a core embedded layer of impact resistant mesh for
greater resistance to through-penetration (impact resistance), Type X gypsum board.
H. Specialty Multi-attribute Board: Fireproof, Waterproof, High Impact, and Non-nutrient to mold. Manufactured from magnesium oxide mineral components. Dragonboard or approved equal.
I. Moisture & Mold Resistant Gypsum Wallboard Type X, 5/8 inch thick, for use at Interior Face of Exterior Walls or wherever moisture resistant
Gypsum Wallboard is noted. Georgia Pacific, DensArmor Plus: A. The inside surface of exterior walls presents growth opportunities for mold, due to lack of air
circulation and temperature differential from outside to inside of the wall. Mold-resistant gypsum board such as DensArmor Plus has been tested in accordance with ASTM 3273, and scored a 10, the highest level of performance for mold resistance. The test indicates no mold growth in a 4-week controlled laboratory test. The product incorporates a moisture resistant core and glass mats on the surfaces of the drywall panel instead of paper facings, which denies mold the food source it needs to grow. The product comes with a three-month in-place exposure warranty which means that it can be hung before installing doors and windows.
B. DensArmor Plus(R) moisture- and mold-resistant paperless interior drywall are the first and only gypsum drywall products to be GREENGUARD Indoor Air Quality Certified(R). This certification, recognizes indoor products that have low emissions of volatile organic compounds (VOCs). To be GREENGUARD Certified means that these products will be regularly tested to ensure that chemical and particle emissions meet the GREENGUARD Environmental Institute's emission standards.
eu:a eppstein uhen architects 15
Interior Gypsum Board Lead Backed Gypsum Board, 5/8 inch thick, Type
X Lead Thickness: As specified by the radiation physicist
report. Note: 7’0” is minimum lead height per national standard UNO
Lead Sheet: In compliance with Federal Specification QQ-L-201f Grade C, 99.9% pure.
Lead-lined Particle Board, 3/4 inch thick. Laminated under pressure to unfinished particle
board. Used primarily where lead shielding is over ¼” thick
Weight too difficult not to damage in transportation and installation
Lead-lined Particle Board becomes a substrate for standard Type X gypsum board finish.
eu:a eppstein uhen architects 16
Tile Backing Panels Waterproof cementitious boards :
Essentially concrete in thin sheets with a fiberglass mesh embedded just below each surface
USG Durock. Type X, 1/2” thick or approved equal.
Water-resistant backer boards gypsum core with a proprietary silicone treated chemical process a substitution of fiberglass matting for the paper a heat-cured, co-polymer vapor-retardant coating on the finished side.
Georgia-Pacific DensShield, Type X, 5/8” thick or approved equal.
ComparisonDurock DensShieldHeavier, more difficult to install Lighter, easier to installMold-resistant Mold-resistantWater-proof Water-resistantNo integral vapor-retardant coating Integral vapor-retardant
coatingLong track record Relatively new to the market30% of market share 9% of market share
eu:a eppstein uhen architects 17
Types of … WALLS Bearing
Load Bearing : LB Non-load Bearing : NLB
Free-Standing Partition Walls Chase Wall Assemblies
Furred Walls
Fire-Resistance-Rated Assemblies Rated vs. Non-rated Smoke-Resistant
eu:a eppstein uhen architects 18
Types of … WALLS
eu:a eppstein uhen architects 19
Most popular wall type? S3A-S11
Acoustical isolation 1-hour fire rated or non-rated
UL V438 Joint Tape and Compound: Vinyl or casein, dry or
premixed joint compound applied in two coats to joints and screw heads of outer layers.
It is commonplace for the DHS building inspector to look above the ceiling at fire rated partitions to verify that joint compound has been applied to the screw heads.
If not, the contractor has to go back and complete this work.
eu:a eppstein uhen architects 20
Shaft Wall Assemblies
eu:a eppstein uhen architects 21
Shaft Wall Assemblies
eu:a eppstein uhen architects 22
Shaft Wall Assemblies - Horizontal
eu:a eppstein uhen architects 23
Shaft Walls : QuestionsQ1 : What is the minimum radius possible
of a curved shaft wall system?
Q2 : In a horizontal shaft wall ceiling system, what will be necessary to coordinate with your electrical engineer?
Q3 : Is it necessary to tape the joints in the 1” liner panel?
Q4 : What depth of C-H studs are available?
Q5 : Can C-H studs be placed 16” O.C.?
Q6 : As a rule of thumb, what is the maximum unbraced height of a 2-hour shaft wall system?
A1 : Fifty Feet.
A2: Surface-mounted light fixtures.
A3 : No, the whole idea is to install the system working from outside of the shaft.
A4 : 2-1/2”, 4” & 6”.
A5 : No, because 1” liner panels are made to fit between C-H studs at 24 inches O.C. and that spacing is what the rated assemblies are tested at.
A6 : 19’-2” using 6” deep C-H studs and 23’-0” using 6” double-E studs.
eu:a eppstein uhen architects 24
Detailing ObjectivesDOB-1 : FIREDOB-2 : EARTHDOB-3 : WATERDOB-4 : AIR
DOB-5 : COSTDOB-6 : TIMEDOB-7 : SCOPE
FIRE
WATER
AIR EARTH
dryhot
wet cold
ELEMENTS
TIMECOST
SCOPE
eu:a eppstein uhen architects 25
Detailing ObjectivesDOB-1 : Fire
(Thermal) Conduction
Thermal Insulation
DOB-2 : Earth (Solid) Movement – Elements
Control Joints Loads
Dead/Live Loads
DOB-3 : Water (Liquids) Sealant, Joints &
Gaskets
DOB-4 : Air (Vapor) Acoustics
Sound Absorbing Surfaces
DOB-5 : Cost Material Costs
DOB-6 : Time Installation Clearances
DOB-7 : Scope Aesthetics Coordination : S + MEP Forgiving Details : Health & Safety
eu:a eppstein uhen architects 26
DOB-1+4 : Thermal + Vapor Conduction
Thermal Insulation
Water Vapor Vapor Ventilation
eu:a eppstein uhen architects 27
DOB-2 : Earth (Solid) Movement – Elements : Control
Joints
Loads : Dead/Live Loads
Vibration
eu:a eppstein uhen architects 28
Movement : Control JointsPurpose: Control joints are required in gypsum board partitions and ceilings to prevent cracking caused by
stresses induced by movement caused by: Changes in humidity Changes in temperature. Isolation joints are required between flexing structural members and non-structural gypsum board assemblies.
Spacing: Control joints should be employed in long expanses of partitions at 30-foot intervals, from floor to
ceiling. Control joints are recommended at doorjambs, extending from door head to ceiling. Control joints are required in interior gypsum board ceilings to limit dimensions in either direction
to 50 feet, and where ceiling framing changes direction. Control joints are required in exterior gypsum board soffits to limit dimensions in either direction
to 30 feet, and where ceiling framing changes direction.
Installation: Include breaking the gypsum board behind the control joint. Separate framing members should be used on each side of the control joint. Install a control joint where ever dissimilar construction meets. Install a control joint to separate the wings of “L”, and “T” shaped ceiling areas.
Reference Standards: Control joints are specified by two reference standards ASTM C 840, The Standard Specification for Application and Finishing of Gypsum Board GA-216, the Gypsum Association Recommended Specification for Application and Finishing of
Gypsum Board. Inspite of these specified reference standards, it is not unusual for the contractor to miss them and
control joints having to be cut-in after the fact. To avoid this, control joints are a good topic of discussion at a contactor meeting during the rough-in stage so that Architect’s expectations are reiterated prior to installation.
eu:a eppstein uhen architects 29
Movement : Control Joints
eu:a eppstein uhen architects 30
Loads : Dead & Live Loads
eu:a eppstein uhen architects 31
Loads : Dead & Live Loads
eu:a eppstein uhen architects 32
DOB-4 : Air (Vapor) Acoustics
Sound Absorbing Surfaces Acoustic Panels : MRI – 60% of wall surface
eu:a eppstein uhen architects 33
Acoustics
eu:a eppstein uhen architects 34
Acoustics
eu:a eppstein uhen architects 35
Acoustics Case Study
eu:a eppstein uhen architects 36
DOB-5 : Cost Material Costs
Value Engineering : reduce wall heights
$$$$$$
eu:a eppstein uhen architects 37
DOB-5 : Cost Material Costs
Curved Walls : Material vs. Labor Costs
eu:a eppstein uhen architects 38
DOB-5 : Cost Life-Cycle : LEED
eu:a eppstein uhen architects 39
Submittals : GREEN GUIDE SUBMITTALS:
Product data. Unless otherwise indicated, submit the following for each type of product provided under work of this Section:
Recycled Content : Indicate recycled content; indicate percentage of pre-consumer,
post-consumer, and post-industrial recycled content by weight for products specified recycled content.
Include statement indicating costs for each product having recycled content.
Local/Regional Materials : Indicate location of manufacturing facility; indicate distance
between manufacturing facility and the project site. Indicate location of extraction, harvesting, and recovery; indicate
distance between extraction, harvesting, and recovery and the project site.
VOC data : Submit manufacturer’s product data for joint compounds. Indicate
VOC limits of the product. Submit MSDS highlighting VOC limits. Submit environmental data in accordance with Table 1 of ASTM
E2129 for products provided under work of this Section.
eu:a eppstein uhen architects 40
DOB-6 : Time Installation Clearances Construction Sequencing
eu:a eppstein uhen architects 41
DOB-7 : Scope Aesthetics : Reveals
Forgiving Details : Dimensional Tolerances
Coordination : S + MEP
Health & Safety Fire-Safe Materials Fire-Resistant Assemblies Nontoxic Materials
eu:a eppstein uhen architects 42
Aesthetics : GB Finish Levels
Level 0 Level 1 Level 2 Level 3 Level 4 Level 5
eu:a eppstein uhen architects 43
Aesthetics : GB Finish LevelsFinish panels to levels indicated below, according to ASTM C 840, for
locations indicated: Level 1 : Embed tape at joints in ceiling plenum areas, concealed
areas, and where indicated, unless a higher level of finish is required for fire-resistance-rated assemblies and sound-rated assemblies.
Level 2 : Embed tape and apply separate first coat of joint compound to tape, fasteners, and trim flanges where panels are substrate for tile and where indicated.
Level 4 : Embed tape and apply separate first, fill, and finish coats of joint compound to tape, fasteners, and trim flanges at panel surfaces that will be exposed to view, unless otherwise indicated.
Level 5 : Embed tape and apply separate first, fill, and finish coats of joint compound to tape, fasteners, and trim flanges, and apply skim coat of joint compound over entire surface at the following locations (except where surfaces are to be finished with wall covering):a. Exposed ceiling, soffit, or wall areas abutting window mullions, skylights,
or receiving direct indoor lighting.b. Wall-board scheduled to be finished with semi-gloss, gloss, epoxy paint, or
high build glazed coating.c. Fiberglass coated glass mat, both faces.d. Long hallways or corridors.e. Atriums, Lobbies, Auditoriums and similar large spaces.
eu:a eppstein uhen architects 44
DOB-7 : Scope Aesthetics : Gypsum Board Finish Levels
Critical (Severe) Lighting Areas Wall and ceiling areas …
abutting window mullion or skylights long hallways atriums large surface areas flooded with artificial and/or
natural lighting Solution ?
skim coating the gypsum board surfaces decorating the surface with medium to heavy textures use of draperies and blinds which often shadows
Paint : gloss, semi-gloss, and enamel finishes highlight surface defects
eu:a eppstein uhen architects 45
DOB-7 : Scope Aesthetics : Reveals
eu:a eppstein uhen architects 46
Forgiving Details : Dim Tolerances
eu:a eppstein uhen architects 47
DOB-7 : Scope Coordination : S + MEP
SECTION 092900 – GYP BD 3.8 Partition Identification Identify partitions indicated on
Drawings as having a required fire or smoke rating.
Location: 10-ft. on center, both sides of partition, above ceiling line.
Above access panels in hard ceiling.
Stenciled Lettering 2” high. Colors and Symbols: Current
DHFS standards, legend from Architect.
eu:a eppstein uhen architects 48
DOB-7 : Scope Coordination : S +
MEP
eu:a eppstein uhen architects 49
DOB-7 : Scope
eu:a eppstein uhen architects 50
DOB-7 : Scope NFPA
eu:a eppstein uhen architects 51
DOB-7 : Scope Health & Safety : Fire-Safe
Materials
eu:a eppstein uhen architects 52
DOB-7 : Scope Health & Safety : Fire-Safe Materials
Healthcare (HC) occupancies: Big distinction between Smoke-Tight partitions vs. Smoke
Barrier walls:
Smoke-Tight partitions : Corridor partitions = fully sprinkled building Corridor walls in a healthcare occupancy that is not fully sprinkled
need to be 1-hour rated.
Smoke Barrier partitions : Used as a separation between smoke zones Smoke barrier partitions are required to be 1-hour rated.. Healthcare occupancies have a “defend in place philosophy”.
The idea is that when a patient is undergoing a medical procedure and the fire alarm goes off, immediately stopping the procedure and taking the patient out the building is not always in the patient’s best interest.
A better alternative may be to transport the patient to a safe smoke zone with facilities to complete the medical procedure, before taking the patient out of the building.
eu:a eppstein uhen architects 53
DOB-7 : ScopeDesign No.
V449Non-Bearing
Wall Rating - 2hr.
(3) Layers GBStud
(1) Layer of GB
eu:a eppstein uhen architects 54
Fire-Safe Resistant Assemblies
DOB-7 : Scope
eu:a eppstein uhen architects 55
Resources : Spec Sections Section 054000 - Cold Formed Metal
Framing
Section 092216 - Non-Structural Metal Framing
Section 092900 - Gypsum Board
Section 092116.23 - Gyp Bd Shaft Wall Assemblies
eu:a eppstein uhen architects 56
Resources : Imperial Library - WIP
Imperial Library - WIP Wall Priority Diagram Top of wall details:
To clg, beam, slab, mtl deck, duct, joist, etc.
Details Lateral bracing &
floor/roof deflection. Control Joints Column/beam
protection
eu:a eppstein uhen architects 57
Wall Priority Diagram
eu:a eppstein uhen architects 58
Resources : L:\Resource Library
eu:a eppstein uhen architects 59
Resources : Codes & Standards
UL Assemblies : http://database.ul.com/cgi-bin/XYV/template/LISEXT/1FRAME/gothern
br.html
eu:a eppstein uhen architects 60
Resources : Codes & Standards
eu:a eppstein uhen architects 61
Resources : Codes & Standards
eu:a eppstein uhen architects 62
Code Question : 2006 IBCCode Question : 2006 International Building Code Per Chapter 7 of the IBC, fire barriers (706) and fire partitions (708) are required
to extend (vertically) from the top of the floor/ceiling assembly below to the underside
of the floor or roof slab or deck above. The horizontal continuity requirements of
these rated assemblies and how they intersect exterior walls are not as explicit as the
vertical continuity requirements. Question : In the case where a rated separation (fire barriers or fire partitions)
terminates at a non-rated, noncombustible exterior wall and the supporting floor is also non-
rated and noncombustible, where can this rated separation “terminate” in relation to the exterior wall?
a. At the interior face of the exterior walls’ interior gypsum board layer? b. At the exterior face of the exterior walls’ interior gypsum board layer? c. At the interior face of the exterior walls’ exterior sheathing layer? d. At the exterior face of the exterior walls’ exterior sheathing layer? e. At the interior face of the exterior walls’ outer-most finish material?
eu:a eppstein uhen architects 63
Resources : Suppliers & Associations
eu:a eppstein uhen architects 64
ConclusionQuestions???
Comments???
Concerns???
Suggestions???