Section 12-K-A06. A106 - ENERGY CONSERVATION, EFFICIENCY AND EARTH ATMOSPHERIC QUALITY

APPENDIX APROJECT ELECTIVES

 

Appendix A to the International Green Construction Code is adopted and incorporated into the Green Construction Code as Appendix A with the following modifications.

 

A106ENERGY CONSERVATION, EFFICIENCY AND EARTH ATMOSPHERIC QUALITY

 

Strike Table A106 in Appendix A of the International Green Construction Code in its entirety and insert new Table A106 in Appendix A of the Green Construction Code in its place to read as follows:

 

TABLE A106

ENERGY CONSERVATION AND EFFICIENCY

PROJECT ELECTIVES

SECTION	DESCRIPTION	MINIMUM NUMBER OF ELECTIVES REQUIRED AND ELECTIVES SELECTED
A106.1	zEPI reduction project electives	Yes	No
A106.1	Project zEPI is at least 5 points lower than required by Table 302.1	1 elective
A106.1	Project zEPI is at least 10 points lower than required by Table 302.1	2 electives
A106.1	Project zEPI is at least 15 points lower than required by Table 302.1	3 electives
A106.1	Project zEPI is at least 20 points lower than required by Table 302.1	4 electives
A106.1	Project zEPI is at least 25 points lower than required by Table 302.1	5 electives
A106.1	Project zEPI is at least 30 points lower than required by Table 302.1	6 electives
A106.1	Project zEPI is at least 35 points lower than required by Table 302.1	7 electives
A106.1	Project zEPI is at least 40 points lower than required by Table 302.1	8 electives
A106.1	Project zEPI is at least 45 points lower than required by Table 302.1	9 electives
A106.1	Project zEPI is at least 51 points lower than required by Table 302.1	10 electives
A106.2	Mechanical systems project elective	Yes	No
A106.3	Service water heating	Yes	No
A106.4	Lighting systems	Yes	No
A106.5	Passive design	Yes	No
A106.6	Renewable energy systems—5 percent	Yes	No
A106.6	Renewable energy systems—10 percent	Yes	No
A106.6	Renewable energy systems—20 percent	Yes	No
A106.7	Energy display	Yes	No
A106.8	Auto demand response for lighting	Yes	No
A106.9	Insulation and fenestration	Yes	No
A106.10	Permanent shading devices for fenestration	Yes	No
A106.11	Air leakage testing—0.25 cfm/ft2 qualifies for 2 project electives	Yes	No
A106.11	Air leakage testing—0.15 cfm/ft2 qualifies for 2 project electives	Yes	No
A106.12	Waste water heat recovery	Yes	No
A106.13	Circulating hot water systems	Yes	No
A106.14	Exterior lighting and signage shutoff	Yes	No
A106.15	Energy Star equipment	Yes	No
A106.16	Lighting power density – 15 percent reduction	Yes	No
A106.16	Lighting power density – 20 percent reduction	Yes	No
A106.16	Lighting power density – 25 percent reduction	Yes	No
A106.16	Lighting power density – 30 percent reduction	Yes	No
A106.16	Lighting power density – 35 percent reduction	Yes	No
A106.17	Green power purchases	Yes	No

 

Strike Section A106.6 in Appendix A of the International Green Construction Code in its entirety and insert new Section A106.6 in Appendix A of the Green Construction Code in its place to read as follows:

 

A106.6 Renewable energy system project electives.  Buildings seeking a renewable energy system project elective or electives shall be equipped with one or more renewable energy systems that have the capacity to provide the percent of annual energy used within the building as selected in Table A106.

 

Insert new Sections A106.7 through A106.17 in Appendix A of the Green Construction Code to read as follows:

 

A106.7 Energy display.  Buildings seeking an energy display project elective shall install a permanent, readily accessible and visible display adjacent to the main building entrance or on a publicly available Internet web site.  The display shall be capable of providing all of the following:

 

1. The current energy demand for the whole building level measurements, updated for each fuel type at the intervals specified in Section 603.3.

 

2. The average and peak demands for the previous day and the same day the previous year.

 

3. The total energy usage for the previous 18 months.

 

A106.8 Auto demand response system for lighting. Buildings seeking an auto demand response system for lighting project elective shall install a system capable of reducing total connected power of lighting as determined in accordance with Section C405.5 of the Energy Conservation Code by not less than 15 percent.

 

A106.9 Insulation and fenestration project elective.  For projects seeking the insulation and fenestration project elective, the building thermal envelope shall exceed the requirements of Tables C402.1.2 and C402.3 of the Energy Conservation Code by not less than 10 percent. Specifically, for purposes of compliance with this code, each U-factor, C-factor, F-factor and SHGC in the specified tables shall be reduced by 10 percent to determine the prescriptive criteria.

 

A106.10 Permanent shading devices for fenestration.  Projects seeking the permanent shading devices project elective shall comply with one of the following for vertical fenestration on the West, South, and East facades:

 

1. Vertical Fenestration shall be shaded by permanent projections that have an area-weighted average projection factor of not less than 0.50.  The building is allowed to be rotated up to 45 degrees to the nearest cardinal orientation for purposes of calculations and showing compliance.

 

2. Vertical fenestration shall have direct solar radiation for fewer than 250 hours per year because of shading by permanent external buildings, existing permanent infrastructure, or topography.

 

3. Vertical fenestration shall have automatically controlled shading devices capable of modulating in multiple steps the amount of solar gain and light transmitted into the space in response to daylight levels or solar intensity that comply with all of the following:

 

a. Exterior shading devices shall be capable of providing at least 90 percent coverage of the fenestration in the closed position.

 

b. Interior shading devices shall be capable of providing at least 90 percent coverage of the fenestration in the closed position and have a minimum solar reflectance of 0.50 for the surface facing the fenestration.

 

c. A manual override located in the same enclosed space as the vertical fenestration shall override operation of automatic controls no longer than four hours.

 

d. Acceptance testing and commissioning shall be conducted to verify that automatic controls for shading devices respond to changes in illumination or radiation intensity.

 

4. Vertical fenestration shall have automatically controlled dynamic glazing capable of modulating in multiple steps the amount of solar gain and light transmitted into the space in response to daylight levels or solar intensity that comply with all of the following:

 

a. Dynamic glazing shall have a lower labeled SHGC equal to or less than 0.12, lowest labeled VT no greater than 0.05, and highest labeled VT no less than 0.40.

 

b. A manual override located in the same enclosed space as the vertical fenestration shall override operation of automatic controls no longer than four hours.

 

c. Acceptance testing and commissioning shall be conducted to verify that automatic controls for dynamic glazing respond to changes in illumination or radiation intensity.

 

A106.11 Air leakage testing.  Projects shall receive 2 project electives where the tested air leakage of the total area of the building thermal envelope is less than 0.25 cfm/ft2 under a pressure differential of 0.3 in water column (1.57 lb/ft2) (1.25 L/s.m2 under a pressure differential of 75 Pa).  Projects shall receive 2 additional project electives where the tested air leakage is 0.15 cfm/ft2 under the same conditions.  Testing shall occur after rough-in and after installation of penetrations of the building envelope, including penetrations for utilities, heating, ventilating and air-conditioning (HVAC) systems, plumbing, and electrical equipment and appliances.  Testing shall be done in accordance with ASTM E 779.  Where a building entrance is required to be protected with a vestibule in accordance with the Energy Conservation Code, an air curtain tested in accordance with ANSI/AMCA 220 is permitted to be used as an alternative to separate conditioned space from the exterior.

 

A106.12 Waste water heat recovery.  Projects that install a waste water heat recovery system shall qualify for a project elective provided that the system preheats the incoming water used for hot water functions by not less than 10 °F (5.6 °C).

 

A106.13 Circulating hot water systems.  Projects seeking a circulating hot water systems project elective shall not have continuous, timer, or water temperature-initiated (aquastat) operation of circulating pumps.  Gravity or thermosyphon circulation loops are prohibited.  Pumps on circulating hot water systems shall be activated on demand by either a hard-wired or wireless activation control of one of the following types:

 

1. A normally open, momentary contact switch.

 

2. Motion sensors that make momentary contact when motion is sensed.

 

3. A flow switch.

 

4. A door switch.

 

A106.14 Exterior lighting and signage shutoff.  Projects seeking an exterior lighting and signage shutoff project elective shall control the lighting of building facades, signage, and landscape features by a time switch control configured so that the lighting automatically shuts off from within one hour after facility operations conclude until within 1 hour before facility operations begin.

 

A106.15 Energy Star equipment elective.  Projects seeking the Energy Star equipment elective shall install 100 percent Energy Star rated equipment for all equipment types that have Energy Star ratings.

 

A106.16 Lighting power density reduction.  Projects seeking the lighting power density reduction elective shall receive one project elective for a 15 percent reduction, two project electives for 20 percent reduction, three project electives for 25 percent reduction, four project electives for 30 percent reduction, and five project electives for 35 percent reduction, compared to the requirements found in the Energy Conservation Code.

 

A106.17 Green power purchases.  Projects that sign up for 100 percent green power for five years of modeled design energy consumption or 8 kWh/sf/year shall receive one project elective.

 

 

authority

Section 10 of the Construction Codes Approval and Amendments Act of 1986 (Act), effective March 21, 1987 (D.C. Law 6-216; D.C. Official Code § 6-1409 (2012 Repl.)) and Mayor’s Order 2009-22, dated February 25, 2009, as amended.

source

Final Rulemaking published at 61 DCR 3356 (March 28, 2014 – Part 2); as corrected by Errata Notice published at 61 DCR 5246 (May 23, 2014).

EditorNote

The District of Columbia Green Construction Code (2013) , referred to as the “Green Construction Code,” consists of the 2012 edition of the International Green Construction Code published by the International Code Council (ICC), as amended by the District of Columbia Green Construction Code Supplement (2013)(12 DCMR K). The International Green Construction Code is copyrighted by the International Code Council and therefore is not republished here. However, a copy of the text may be obtained at:http://publicecodes.cyberregs.com/icod/igcc/2012/index.htm?bu=IC-P-2012-000023&bu2=IC-P-2012-000019.