Ibc Minimum Flat Roof Slope

The ibc table 1505 1 lists the minimum requirements for roof covering fire resistance classifications a b or c for all types of.

Ibc minimum flat roof slope.

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. 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. Minimum roof fire resistance ratings apply based on the type of construction and some building types do not require a fire rating. When required testing is in accordance with astm e108 or ul 790.

Per foot would be acceptable. This means that even less than the minimum of in. For steep slope roof systems ibc 2018 provides for a 1 12 minimum roof slope for mineral surfaced roof roll roofing. 2 12 minimum roof slope for asphalt shingles photovoltaic pv shingles and building integrated pv.

I am looking at the ibc minimum roof slope requirement for standing seam metal roof. 2 exactly does not translate to 1 4 per foot. This logic does not consider that lower sloped roofs will not drain water at the same rate as roofs with greater slopes. I understand this is more of rounding off to get to a nice number.

2 1 2 12 minimum roof slope for clay and concrete tile. 3 12 minimum roof slope for metal roof panels with nonsoldered seams without applied lap sealant metal shingles and wood shingles. The minimum slope the code allows is in 12 in. Ibc callouts for min 2 or 1 4 per foot.