Roof Wind Load Formula

P q h g cn 30 8 1 where.

Roof wind load formula. Http goo gl mrgajl for more free video tutorials covering structural design loading this video elaborates the calculation of wind pressure acting on roof. When building a structure it is important to calculate wind load to ensure that the structure can withstand high winds especially if the building is located in an area known for inclement weather. Q h velocity pressure at mean roof height h using the exposure defined in section 26 7 3. Q velocity pressure in psf given by the formula.

C p external pressure coefficient. G c p i internal pressure coefficient. The design wind load shall be calculated as. Q 0 00256 k z k z t k d v 2 3 q q h for leeward walls side walls and roofs evaluated at roof mean height h.

The formula for wind load is f a x p x cd x kz x gh where a is the projected area p is wind pressure cd is the drag coefficient kz is the exposure coefficient and gh is the gust response factor. G gust effect factor. This formula takes a few more parameters into account for wind load. It provides the wind load calculations on uplift leeward windward and roof forces of a building.

2 4 wind load on open building and other structures. In order for a structure to be sound and secure the foundation roof and walls must be strong and wind resistant.