Section 12-K602. MODELED PERFORMANCE

 

Strike Section 602.1 and Subsection 602.1.1 of the International Green Construction Code in their entirety and insert new Section 602.1 and Subsection 602.1.1 in the Green Construction Code in their place to read as follows:

 

602.1 Performance-based compliance.  Compliance for buildings and their sites to be designed on a performance basis shall be determined by predictive modeling.  Predictive modeling shall use source energy kBtu/sf-y unit measure based on compliance with Section 602.1.1. Where a building has mixed uses, all uses shall be included in the performance-based compliance.

 

602.1.1 zEPI.  Performance-based designs shall demonstrate a zEPI of not more than 51 as determined in accordance with Equation 6-1 for energy use reduction.

 

(Equation 6-1)

 

zEPI = 57 × (EUIp/EUI)

 

Where:

 

EUIp =the proposed energy use index in source kBtu/sf-y for the proposed design of the building and its site calculated in accordance with Section 602.1.2.

 

EUI = the base annual energy use index in source kBtu/sf-y for a baseline building and its site calculated in accordance with Section 602.1.2.

 

Strike Subsection 602.1.2 of the International Green Construction Code and insert new Subsection 602.1.2 in the Green Construction Code in its place to read as follows:

 

602.1.2 Base annual energy use index.  The proposed energy use index (EUIp) of the building and building site shall be calculated in accordance with Equation 6-1; Appendix G to ASHRAE 90.1, as modified by Sections 602.1.2.1 through 602.1.2.3; and approved modeling guidelines. The annual energy use shall include all energy used for building functions and its anticipated occupancy.

 

Retain Subsections 602.1.2.1 and 602.1.2.2 of the International Green Construction Code in their entirety.

Strike Subsection 602.1.2.3 of the International Green Construction Code in its entirety and insert new Subsection 602.1.2.3 in the Green Construction Code in its place to read as follows:

 

602.1.2.3 Non-renewable energy.  In calculating the annual energy use index, for fuel other than electrical power, energy use shall be converted to consistent units by multiplying the non-renewable energy fossil fuel use at the utility meter or measured point of delivery to Btu’s and multiplying by the conversion factor in Table 602.1.2.2.

 

Strike Table 602.1.2.2 of the International Green Construction Code in its entirety and insert new Table 602.1.2.2 in the Green Construction Code in its place to read as follows:

 

TABLE 602.1.2.2

U.S. AVERAGE BUILDING FUELS ENERGY CONVERSION

FACTORS BY FUEL TYPEa

FUEL TYPE	ENERGY CONVERSION FACTOR
Natural Gas	1.09
Fuel Oil	1.13
LPG	1.12
Purchased heat (hot water)	1.35
Purchased heat (steam)	1.45
District cooling	1.033
Other	1.1

a. Source: Gas Technology Institute Source Energy and Emissions Analysis Tool.

 

Retain Subsection 602.1.3 of the International Green Construction Code in its entirety.

Strike Section 602.2 of the International Green Construction Code in its entirety (including associated subsections) without substitution.

 

 

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.