Wind Loads

The library has to be determined to be up to code when in construction and when completed. The main wind force resisting system (MWFRS) and all components and cladding (C&C) has to be designed and constructed to resist wind loads that are in accordance with chapter 26 through chapter 31. The risk factor category of the building first has to be determined. The risk factor is the amount of damage that the building will have to on the surrounding community if it is shut down. The library has been determined to have a risk  factor of 1 because there is little risk to human life if the building is shut down. The wind speed is then determined based on the risk factor. The wind speed in that area was determined to be 100 mph. From there the surface roughness is determined. The surface roughness in the building that is surrounding the structure that is being built/renovated. The library has been determined to have a surface roughness B because it has surroundings and is located in a urban to suburban area. The Exposure category is then determined by the height of the building. The height of the library should be over 30 ft so it falls in the exposure category of exposure B. Then the topographic factor was determined afterward using the symbol (Kzt) The topographic factor was determined to be 1.0 because there was no escarpment or ridges/hills surrounding the area.