To perform wind load calculations according to ASCE 7-05, the standard feature is the , which determines design wind pressures ( ) or forces (
) multiplied by the area of the building projected onto a vertical plane. Summary Checklist for Calculation Determine and Importance Factor ( ) . Select Exposure Category (B, C, or D). Calculate Velocity Pressure Exposure Coefficient ( Kzcap K sub z ) . Determine Topographic Factor ( Kztcap K sub z t end-sub ) and Directionality Factor ( Kdcap K sub d ) . Compute Velocity Pressure ( ) . Select appropriate Gust Effect Factor ( ) and Pressure Coefficients ( ) . Solve for Design Pressure ( ) and verify against Minimum Load requirements. wind load calculation as per asce 7-05
: External pressure coefficient (varies for windward, leeward, side walls, and roof zones). 3. Check Minimum Wind Load To perform wind load calculations according to ASCE
The fundamental equation for velocity pressure at height (z) is: Calculate Velocity Pressure Exposure Coefficient ( Kzcap K
Determining wind loads under involves a systematic procedure to convert atmospheric wind speeds into design pressures for structural systems. Unlike later versions (ASCE 7-10 and beyond) that use ultimate wind speeds, ASCE 7-05 utilizes a single basic wind speed map based on service-level 3-second gusts, adjusted by an importance factor and a wind-load factor of 1.6 for strength design. General Methodology
The pressure on the MWFRS is calculated using or 6-18 (Directional Procedure). The basic velocity pressure equation is:
$$p = q G C_p - q_i (GC_pi)$$
