Ibc Chapter 15 Roof Slope

For roof slopes from two units vertical in 12 units horizontal 17 percent slope up to four units vertical in 12 units horizontal 33 percent slope double underlayment application is required in accordance with section 1507 2 8.

Ibc chapter 15 roof slope.

The primary roofing chapter in the irc is chapter 9 roof assemblies. The international code council icc is a non profit organization dedicated to developing model codes and standards used in the design build and compliance process. Roof slope 3 12 and over. Having a width no greater than 16 inches.

The provisions of this chapter shall govern the design materials construction and quality of roof assemblies and rooftop structures. Only one fastener on slopes of 7 12 and less for tiles with installed weight exceeding 7 5 lbs sq. Flat tile without vertical laps two fasteners per tile. However many other parts of the code deal with aspects of roofing.

Two fasteners per tile. 1507 2 3 underlayment underlayment shall comply with section 1507 1 1. The international codes i codes are the widely accepted comprehensive set of model codes used in the us and abroad to help ensure the engineering of safe sustainable affordable and resilient structures. This means for every 12 horizontal units the roof must rise a minimum of one fourth vertical unit.

For roof slopes from two units vertical in 12 units horizontal 17 percent slope up to four units vertical in 12 units horizontal 33 percent slope double underlayment application is required in accordance with section 1507 2 8. In areas where there has been a history of ice forming along the eaves causing a backup of water an ice barrier must be installed in accordance with chapter 15 of the 2015 ibc or chapter 9 of the 2015 irc. For roof slopes from two units vertical in 12 units horizontal 17 percent slope up to four units vertical in 12 units horizontal 33 percent slope double underlayment application is required in accordance with section 1507 2 8. Proper ventilation is also important for performance in cold climates and the ability to shed or retain snow must also be considered.

Roof slope up to 3 12. The primary roofing chapter in the ibc is chapter 15 roof assemblies and rooftop structures. All structural metal roofing systems having a thickness equal to or greater than 22 gage and all nonstructural metal roof systems having a thickness equal to or greater than 26 gage shall be exempt from the. One fastener per tile.

Chapter 15 roof assemblies and rooftop structures section 1501 general 1501 1 scope. Cold climates create unique conditions for roof design and prevention of ice and snow related damages.