Standard Hip Roof Pitch

The picture below shows the pitch of a 7 12 roof slope meaning that for 12 of horizontal measurement roof run the vertical measurement roof rise is 7.

Standard hip roof pitch.

The most commonly used roof pitches fall in a range between 4 12 and 9 12. This measurement is best done on a bare roof because curled up roofing shingles will impair your measurement. You write the pitch assuming a run of 12 inches thus the ratio would describe how much a roof rises for each foot of the run. A hip roof design refers to a roof where the roof sides slope downwards from a middle peak with the rafter ends meeting the exterior walls of the house.

Pitches lower than 4 12 have a slight angle and they are defined as low slope roofs. The table below shows common roof pitches and the equivalent grade degrees and radians for each. Modern residential hip roof construction uses common pitch ratios in general. Pitches above 9 12 are very highly angled and are designated steep slope roofs.

The most common hip roof pitch ratios fall between 4 12 and 6 12 although variations occur based on factors such as snow rain and wind conditions which is because steeper hip roof pitch ratios allow for less accumulations of snow and rain on the roof and lower ratios provide less wind resistance. This is for the top level of a 3 story building that is 26 by 64. The tall steep roofs are high priced and construct of those are complicated. There are always some limitations in the selection of the height.

Most roof s have a pitch in the 4 12 to 9 12 range. One engineer recommends a 12 12 pitch for the new roof while another recommends a 7 12 pitch. The height and rake of a roof are one of the important factors. But the most commonly used pitches range between 4 12 and 9 12.

Selecting the roof pitch. The ibhs recommends a 4 to 6 pitch roof. As aforementioned there is no standard pitch of a roof. How do you calculate the slope of a roof.

The most daunting task is selecting the height. The typical roof slope follows specific materials and design techniques to ensure perfect safety from leakage. Pitches of less than 2 12 are considered flat roofs even though they may be very slightly angled. A common range is given from 1 12 to 4 12 whereas conventional dimensions vary from 4 12 to 9 12 but the steep roofing technique follows slope above 9 12 with additional fasteners.

A pitch over 9 12 is considered a steep slope roof between 2 12 and 4 12 is considered a low slope roof and less than 2 12 is considered a flat roof.