2013 DC Energy Conservation & Green Construction Codes · PDF file2013 DC Energy Conservation...
Transcript of 2013 DC Energy Conservation & Green Construction Codes · PDF file2013 DC Energy Conservation...
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2013 DC Energy Conservation & Green Construction Codes
Matt Jacobs, PE, LEED AP Senior Principal
November 7, 2016
Dave Epley Green Building Program Manager, DCRA
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1. Participants will become familiar with the goals of the District of Columbia’s Green
Construction Code (GCC).
2. Participants will understand how changes to the Energy Conservation Code impact
equipment efficiency and operational requirements.
3. Participants will be able to explain the various compliance paths through which a design
and construction project larger than 10,000 SF may meet the requirements of the GCC.
4. Participants will be able to identify the underlying model codes and standards from which
the GCC was derived.
Learning Objectives
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Green Building and Sustainability Goals Green Building Regulations Overview
• DC Energy Conservation Code
• Green Building Act
• DC Green Construction Code
DCRA Green Permitting, Inspections and Certificate of Occupancy Requirements
Tips on Design and Compliance Process Green Building Resources
Overview
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Align with the 2032 Sustainable DC goals
For the 2013 codes, the goal was to green the construction code to the maximum extent practicable.
Codify the best practices currently followed by green building leaders in the District.
Green Building Regulation Goals
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Bill Updike (Chair), DOEE Joe Winters, HOK Frank Mobilio, Jones Lang Lasalle Patrick Kunze, GHT Limited Fulya Kocak, Clark Construction Ethan Landis, Landis Construction John Otto, Akridge Harrison Shelton, DCRA Nicola Whiteman, AOBA
2013 Green Code Adoption Process Voting Green TAG Members
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Bill Updike (Chair), DOEE Anica Landreneau, HOK Frank Mobilio, Jones Lang Lasalle Patrick Kunze, GHT Limited Kim Pexton, Paladino Ethan Landis, Landis Construction John Otto, Akridge Dave Kaiser, DCRA Roger Chang, WRL Design Eric Schlegel, WDG Architecture
2017 Green Code Adoption Process Voting Green TAG Members
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The Division Enforces: • Green Building Act • Green Construction Code • Energy Conservation Code • Anacostia Waterfront Environmental Standards
• We operate within the structure of DCRA’s permitting and
inspections groups, with work including reviews of construction documents, conducting building inspections, and collaborating with the community to further the efforts to build a more sustainable DC.
• The Division acts as an educator and green building technical assistance resource
DCRA’s Green Building Division
Energy Code
GCC GBA
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2012 International Energy Conservation Code, amended by
2013 DCMR 12-I = DCECC. (ASHRAE 90.1-2010 alt pathway)
DC is in Climate Zone 4A. Code divided into commercial and
residential sections.
Requirement for minimum solar reflectance on roofs
Increased envelope insulation requirements
Vertical fenestration <30% gross wall area.
Skylights limited to 3% of roof area (up to
5% with automatic daylights controls)
Energy Conservation Code Application
Energy Code
GCC GBA
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Energy Conservation Code Opaque Thermal Envelope Requirements
Table C402.2 Opaque Thermal Envelope Requirements
Climate Zone 4 - 2012 Climate Zone 4 -
2006
All Others Group R
Roofs
Insulation entirely above deck R-25ci R-25ci R-15ci
Metal buildings (With R-5
thermal blocks)
R-19 + R-11LS R-19 + R-11LS R-19
Attic and other R-38 R-38 R-30
Walls, Above Grade
Mass R-9.5ci R-11.4ci R-5.7ci
Metal buildings R-13 + R-13ci R-13 + R-13ci R-13
Metal framed R-13 + R-7.5ci R-13 + R-7.5ci R-13
Wood framed and other R-13 + R-3.8ci
or R-20
R-13 + R-3.8ci
or R-20
R-13
Walls, Below Grade
Below-grade wall R-7.5ci R-7.5ci NR
Floors
Mass R-10ci R-10ci R-10ci
Joist/framing R-30 R-30 R-19
Slab-on-Grade Floors
Unheated slabs R-10 for 24”
below
R-10 for 24”
below
NR
Heated Slabs R-15 for 24”
below
R-15 for 24”
below
R-7.5 for 12”
below
Opaque Doors
Swinging U-0.61 U-0.61 U-0.70
Roll-up or sliding R-4.75 R-4.75 U-1.45 (~R-0.7)
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Air conditioner efficiencies increased.
Demand Controlled Ventilation required for
systems delivering over 1,200 cfm outdoor air.
Energy recovery ventilation systems required
beginning with outdoor air from 1,000 cfm to
5,500 cfm. All systems above 80% outdoor air.
Duct insulation requirements.
Economizers are required over
33,000 Btu/hr (~3-tons).
Energy Conservation Code Mechanical
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Energy Conservation Code Lighting Controls
Light level controls AND time clock controls required.
Occupancy sensors are an exception. C405.2.1.2
Light levels must be able to be lowered by at least
50%. Must be controlled by occupant in a
“reasonably uniform pattern.” This includes dual
switching, switching each luminaire or lamp, dual
ballast switching – occupancy sensors are an
exception. C405.2.1.2
Timeclock shall be provided, with override,
maximum control area: 5,000 SF. C405.2.2.1
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Occupancy Sensors required:
Classrooms, conference/meeting rooms,
employee lunch & break rooms, private offices,
restrooms, storage rooms, janitors closets,
other spaces 300 SF and smaller. C405.2.2.2
Sensors must be either
Manual “on.” (Vacancy Sensor) or
Automatic “on” to no more than 50% lighting power.
Exceptions for automatic “on” to full power for
safety or security reasons. C405.2.2.2
Energy Conservation Code Occupancy Sensors
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Daylight Control Zone independent of general lighting
Each daylight control zone shall not exceed 2,500 SF.
Daylight zones under skylights more than 15-feet from
perimeter shall be controlled separately from daylight
zones adjacent to vertical fenestration.
Options:
Manual Daylight controls (on/off) C405.2.2.3.1
Automatic daylight controls
(continuous or stepped dimming) C405.2.2.3.2
Energy Conservation Code Daylight Controls C405.2.2.3
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Office lighting power is now a maximum of .9Watts/SF
for Building Area Method (BAM). Table C405.5.2(1)
Space-By-Space allowances: Table C405.5.2(2)
1.1 enclosed/1.0 open W/SF office
1.2 W/SF conference
Additional Efficiency Package Options: C406
1. Efficient HVAC Performance – higher efficiency standards C406.2
2. Efficient Lighting System – lower Watts/SF requirement
(0.85W/SF office BAM) C406.3
3. On-site Supply of Renewable Energy…. C406.4
Commissioning Requirements removed from
DC Energy Conservation Code (IECC 2012) but
required in DC Green Code.
Energy Conservation Code Lighting
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The Green Building Act has requirements for public and
publically financed buildings, as well as large private buildings
Private, non-residential buildings 50,000 sf or greater, and new
construction or substantial improvement must be LEED at
Certified level (financial security required at CofO)
Public buildings, Publically-financed (>15%), and new
construction or substantial improvement: Schools = LEED Gold (
Residential = Green Communities
Commercial = LEED Silver
Green Building Act (GBA) Application
Energy Code
GCC GBA
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2012 International Green Construction Code,
amended = GCC.
Applies to the construction, addition,
alteration, relocation, razing, and demolition of
every building or structures structure as stated
below:
Non-residential projects (10,000 SF and larger).
Multifamily residential 4 stories and larger (and
10,000 SF and larger).
Demolition (10,000 SF or larger).
Site Work (10,000 SF or larger).
Green Construction Code (GCC) Application
Energy Code
GCC GBA
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Green Building Act Projects Exempt
Green Construction Code
Alternate Compliance Pathways:
ASHRAE 189.1
LEED
Green Communities
ICC 700, NGBS
Green Code Compliance Paths
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Green Construction Code Site Development & Land Use (ch. 4)
Management of Vegetation, Soils & Erosion
Control (405).
Building Site Waste Management (406)
Heat Island Mitigation (408)
Site Lighting (409)
Provisions for B-U-G (back light, uplight, and glare) ratings
to reduce light pollution.
Lengthy list of exceptions.
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Green Construction Code Material Resource Conservation and Efficiency (ch. 5)
Construction Material Management (502)
Store materials per manufacturer’s requirements.
Porous and fibrous materials need to stay dry on the
construction site.
Construction Waste Management (503)
Minimum of 50% of nonhazardous construction
waste (including that removed during demolition)
needs to be recycled or salvaged. Calculated by
weight or volume, but not both.
Owner may have to furnish hauling receipts to DCRA
to provide compliance.
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Green Construction Code Energy Conservation, Efficiency and CO2 Emission Reduction (ch. 6)
General (601)
Performance-based compliance (building energy
model)
602, 608.6, 609, & 611.
Prescriptive-based compliance
605, 606, 607, 608, 609, & 611.
Both compliance paths
603, 604, & 611.
Section 610: Building Renewable Energy Systems was
struck in the DC amendment process.
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Green Construction Code Energy Conservation, Efficiency and CO2 Emission Reduction (ch. 6)
Modeled Performance Pathway Req’ments (602)
zEPI (zero Energy Performance Index) ≤ 51
zEPI= 57 x (EUIp/EUI)
EUIp = proposed energy use index in kBTU/SF-y for proposed
design
EUI = base annual energy use index in source kBTU/SF-y
calculated in accordance with ASHRAE Standard 90.1, Appendix
G.
zEPI of 100 = code-complaint building in 2000
zEPI of zero = net zero building
Electric power must be converted to source energy
based on locale. MD/DC x3.15
VA x3.13
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Green Construction Code Energy Conservation, Efficiency and CO2 Emission Reduction (ch. 6)
Energy Metering, Monitoring, & Reporting (603)
Only applies to new construction and projects undertaking a
complete electrical system replacement.
All forms of energy delivered to the site shall be
metered.
Energy distribution and load type isolation (or
equivalent submetering): HVAC Lighting Plug Process Building Operations & miscellaneous
Buildings >50,000 SF shall be metered by load type.
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Green Construction Code Energy Conservation, Efficiency and CO2 Emission Reduction (ch. 6)
Automated Demand-Response Infrastructure
(604)
If a building has an HVAC system AND a BMS, Auto-DR
capability is required.
Must have sequence of operations capable of
reducing the peak cooling or heating HVAC demand by
not less than 10%.
Certain exceptions including life safety, smoke
exhaust, Group R.
Buildings are NOT required to participate in utility
Auto-DR program, just have to have the capability to
participate.
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Green Construction Code Energy Conservation, Efficiency and CO2 Emission Reduction (ch. 6)
Building Envelope Systems (605)
Insulation, Fenestration, and Air Leakage
requirements are in line with the Energy Conservation
Code (DC Amendment).
Roof Replacement requires upgrading to new roof
insulation requirements.
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Green Construction Code Energy Conservation, Efficiency and CO2 Emission Reduction (ch. 6)
Building Service Water Heating Systems (607)
Must comply with Federal minimum efficiency
standards & IECC.
Dwelling units must have operable controls on water
heaters installed in dwelling units.
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Green Construction Code Energy Conservation, Efficiency and CO2 Emission Reduction (ch. 6)
Building Electrical Power and Lighting Systems
(608)
Sleeping unit lighting controls.
Exterior Lighting Reduction – time switch to reduce
exterior lighting power by 30% within 2 hours after
facility operations conclude.
Automatic Daylight controls required.
Water dispensers with cooling needs time switch
Vending machine lighting need to be on a time switch
or occupancy sensor.
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Green Construction Code Energy Conservation, Efficiency and CO2 Emission Reduction (ch. 6)
Specific Appliances and Equipment (609)
Appliances and Equipment covered by Federal
Standards.
Elevators – efficiency requirements for the ventilating
fan.
Escalators – capability to automatically slow when no
occupants are present.
Commercial Food Service Equipment – minimum 50%
(by total wattage) shall be Energy Star rated (covers
only equipment eligible for Energy Star).
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Green Construction Code Water Resource Conservation, Quality & Efficiency (ch. 7) Fixture Efficiency – State of the Shelf
Appliances – Clothes Washers, Ice Makers, Steam Cookers,
Dishwashers. Energy Star or specific efficiency requirement.
Hot water distribution.
Once-through cooling prohibited.
Cooling Towers.
Water treatment device efficiency: RO system automatic shutoff valve
Onsite reclaimed water treatment: NSF 350
Metering:
Irrigation, Tenant Spaces, Onsite Water Collection Systems,
Ornamental Water Features, Pools and In-ground Spas, Cooling
Towers, Steam Boilers.
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Green Construction Code Indoor Environmental Quality and Comfort (ch. 8)
HVAC filter racks & access doors.
MERV 11 filters on HVAC systems.
VOC limits similar to LEED.
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Green Construction Code Commissioning, Operation & Maintenance (ch. 9)
Applies to (1) new construction, (2) level 3 alterations,
and to (3) level 1 and 2 alterations 50,000 SF or greater
Preliminary (at CofO) & Final Commissioning
Reports (180 days after CofO)
Covers
Mechanical,
Lighting,
Water Metering & Cooling Towers, and
Air Handling System Access & Filters.
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Green Construction Code Appendix A
New Construction: 15 electives required.
Level 3 Alteration: 13 electives required.
49 available electives.
Site Selection: 8 available.
Material Resource Conservation: 7 available.
Energy Conservation: 17 available.
Water Resource Conservation: 8 available.
Indoor Environmental Quality: 9 available.
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Design Permit Inspection C of O Post
Construction
Project Timeline
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Permitting
File Building Permit Application Green and Energy Review
What is applicable? Common Mistakes
Insufficient documentation Wrong code year used HVAC sizing calculation not included Air sealing detail requirements not included Energy Verification Sheet not included or completed Other important documentation not included (energy
model summary/inputs/outputs, COMCheck, etc.)
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Energy Verification Sheets
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Inspections
Energy Code Inspections Incorporated into normal
inspections process (e.g. foundation, insulation, and final inspection) Includes 3rd party inspections
Green Code Inspections conducted by DCRA Include a mid-construction and final
inspection
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Certificate of Occupancy
Energy Code (collect air leakage and duct leakage results) GCC projects
Progress on alternative compliance paths (e.g. LEED, EGC) GCC Projects
Ensure all green inspections have been passed Collect and review the following information if
applicable: Construction Waste Management Report/Results Commissioning Report Material Selection Report
For GBA projects Ensure financial security completed (as applicable)
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Post-Construction
Final certifications within 1 year (GCC) or 2 years (GBA) Final forms (e.g. Cx report) For non-compliance, penalties are enforced on the project Energy benchmarking required for commercial and multifamily
buildings 50,000 SF or more (examples at buildsmartdc.com)
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Tips on Design and Compliance Process
Define Project Scope and Applicable Regulations
Green Building Act, Green Code, or neither? Specify compliance path with code summary
When in doubt, ask DCRA Green Division questions [email protected] Preliminary Green Design Review Meeting Office Hours (1-2PM, M-F)
Proper Documentation (be consistent) Follow through from design to construction to occupancy Handle important communications in writing Don’t try to game the system
40 Available at BuildGreenDC.org
41 Available at BuildGreenDC.org
42 Available at BuildGreenDC.org
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1. Participants will become familiar with the goals of the District of Columbia’s Green
Construction Code (GCC).
2. Participants will understand how changes to the Energy Conservation Code impact
equipment efficiency and operational requirements.
3. Participants will be able to explain the various compliance paths through which a design
and construction project larger than 10,000 SF may meet the requirements of the GCC.
4. Participants will be able to identify the underlying model codes and standards from which
the GCC was derived.
Learning Objectives Recap