This document provides guidelines for calculating wind loads on buildings and structures according to the Indian Standard IS: 875 Part 3 (2015). The guide outlines the process of determining wind loads, including the input parameters, calculations, and the use of ProtaStructure software for analysis.

The document begins by defining key parameters like design wind speed (Vz), basic wind speed (Vb), and factors such as probability (k1), terrain height (k2), topography (k3), and importance (k4). These factors help modify the basic wind speed to reflect the actual conditions affecting a structure. Formulas are provided to calculate wind pressures and forces acting on buildings based on these factors.

The guide includes step-by-step instructions for using the ProtaStructure Wind Load Calculator, which simplifies the wind load calculation process by allowing users to input various parameters such as wind direction, building dimensions, and terrain category. The software then generates wind load results for different directions and heights.

The document also provides examples of hand calculations compared to results generated using ProtaStructure, illustrating how wind loads are distributed across buildings and demonstrating the impact of different coefficients, such as pressure and force coefficients, on wind load distribution.

Finally, the document emphasizes the importance of accurate input and verification of results, and offers support for ProtaStructure users through technical support channels.