Section 12-B2903. P2903 - WATER-SUPPLY SYSTEM

 

Strike Table P2903.2 of the International Residential Code in its entirety and insert new Table P2903.2 in the Residential Code in its place to read as follows:

 

TABLE P2903.2

MAXIMUM FLOW RATES AND CONSUMPTION FOR

PLUMBING FIXTURES AND FIXTURE FITTINGSb

 

 

PLUMBING FIXTURE OR FIXTURE FITTING	MAXIMUM FLOW RATE OR QUANTITY
Lavatory faucet and bar sink faucet	1.5 gpm at 60 psi and WaterSense labeled
Shower heada	2.0 gpm at 80 psi and WaterSense labeled
Sink faucet, kitchen	2.2 gpm at 60 psi
Water closet, tank typec	1.28 gallons per flushing cycle and WaterSense labeled
Water closet, flushometer type	1.28 gallons per flushing cycle

 

For SI:1 gallon per minute = 3.785 L/m,

1 pound per square inch = 6.895 kPa

 

a.  A handheld shower spray is also a shower head.

b.  Consumption tolerances shall be determined from referenced standards.

c.  Dual Flush Toilets - The effective flush volume shall not exceed 1.28 gallons (4.8 liters). The effective flush volume is defined as the composite, average flush volume of two reduced flushes and one full flush. Flush volumes will be tested in accordance with ASME A112.19.2 and ASME A112.19.14.

 

 

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 3063 (March 28, 2014 – Part 2).

EditorNote

The District of Columbia Residential Code (2013), referred to as the “Residential Code,” consists of the 2012 edition of the International Residential Code for One- and Two-Family Dwellings, published by the International Code Council (ICC), as amended by the District of Columbia Residential Code Supplement (2013) (12 DCMR B). The International Residential Code is copyrighted by the ICC and therefore is not republished here. However, a copy of the text may be obtained at:http://publicecodes.cyberregs.com/icod/irc/2012/index.htm?bu=IC-P-2012-000002&bu2=IC-P-2012-000019.