Strike Section 1504.4 of the International Building Code in its entirety and insert new Section 1504.4 to the Building Code in its place to read as follows:

1504.4 Ballasted low-slope roof systems. Ballasted low-slope (roof slope < 2:12) single-ply roof system coverings installed in accordance with Sections 1507.12 and 1507.13, and protected membrane ballasted low-slope (roof slope < 2:12) hot-applied rubberized-asphalt roofing systems installed in accordance with Section 1507.18, shall be designed in accordance with Section 1504.8 and ANSI/SPRI RP-4.

SOURCE: Final Rulemaking published at 61 DCR 2782 (March 28, 2014 – Part 2).

The District of Columbia Building Code (2013), referred to as the “Building Code,” consists of the 2012 edition of the International Building Code as amended by the District of Columbia Building Code Supplement (2013)(12 DCMR A). The International Building 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/ibc/2012/index.htm?bu=IC-P-2012-000001&bu2=IC-P-2012-000019.