675 IAC 13-2.6-17 Chapter 15; roof assemblies and rooftop structures

Sec. 17. Chapter 15 is amended as follows: (a) Amend Section 1503.4.1, Secondary (emergency overflow) drains or scuppers by deleting in the second sentence, "leaders, and conductors". (b) Amend Table 1505.1, Minimum Roof Covering Classification for Types of Construction, by deleting all references to footnote a without substitution. (c) Amend Table 1507.4.3(1), Metal Roof Coverings, at the bottom of the table, delete "0.0026" and insert "0.305". (d) Insert Table 1507.9.8, Wood Shake Weather Exposure and Roof Slope to read as follows: ROOFING MATERIAL LENGTH (inches) GRADE EXPOSURE (inches) 4:12 PITCH OR STEEPER Shakes of naturally 8 No. 1 7.5 durable wood 24 No. 1 10a Preservative-treated taper sawn shakes of Southern yellow pine 18 No. 1 7.5 24 No. 1 10 18 No. 2 5.5 24 No. 2 7.5 Taper sawn shakes of naturally durable wood 18 No. 1 7.5 24 No. 1 10 18 No. 2 5.5 24 No. 2 7.5 For SI: 1 inch = 25.4 mm. a. For 24-inch by 0.375-inch handsplit shakes, the maximum exposure is 7.5 inches. (e) Amend Section 1509.6.2, Types I, II, III and IV construction, by adding an exception to read as follows: Exception: Buildings with automatic sprinkler systems installed in accordance with Section 903.3.1.1 or 903.3.1.2.