Flat Roof Wind Uplift Calculator

The unit for wind pressure is pounds per square foot psf.

Flat roof wind uplift calculator.

General actions wind actions bs en 1991 1 4. As wind flows over the building the pressure directly above the surface of the roof decreases. Ensuring the right method of attachment is chosen for the project. Wind loads are important consideration in structural engineering in the design of a structure.

All of the potential load cases required to fully design an actual structure may not be provided by this calculator. 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. From figure 30 3 1 page 335 kzt kzt default 1 00 refer to section 26 8 and figure 26 8 1 to determine the wind speed up effect. Wind pressure is given by the equation p 0 00256 x v2 where v is the speed of the wind in miles per hour mph.

R802 10 2 and designed according to the minimum requirements of asce 7 10. When there is no wind the air pressure on the upper surface of a roof system is the same as that on the underside. For example if the wind speed is 70 mph the wind pressure is 0 00256 x 70 2 12 5 psf. In order for a structure to be sound and secure the foundation roof and walls must be strong and wind resistant.

This easy to use calculator will display the wind speed by location via a wind speed map as prescribed by the above building codes. Before we can answer the question however we must first define wind uplift. Wind uplift calculations to ensure that every sarnafil roofing system will stay on the building no matter what the geographic location or height of the building the sika sarnafil technical services department calculates the wind load on every individual roof. Many studies on roofed structures have been performed in the past.

The present study demonstrates the pressure variations due to wind load on the pyramidal roof of a square plan low rise building with 15 wall openings through cfd computational fluid dynamics simulation. For the design of an actual structure a registered and licensed professional should be consulted as per irc 2012 sec. Roof damage caused by wind occurs when the air pressure below the roofing assembly is greater than the air pressure above the building s roof. Roof shape and slope are both important parameters for the safety of a structure especially when facing wind loads.