2013 dc energy conservation & green construction codes · pdf file2013 dc energy...

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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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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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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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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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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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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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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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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

mailto:[email protected]

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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

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Thank You For Your Time Questions?

Email [email protected] and Visit BuildGreenDC.org

mailto:[email protected]

http://www.buildgreendc.org/

2013 dc energy conservation & green construction codes · pdf file2013 dc energy...

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