What term describes investigating records on wind speed, air temperature, rainfall, and snowfall for bridge design?

• A. Meteorological surveys
• B. Geotechnical surveys
• C. Hydrological surveys
• D. Environmental surveys

Answer: (A)

Gathering and analyzing weather-related records for bridge design centers on atmospheric conditions and how they influence loads on the structure. The term for this is meteorological surveys, because meteorology deals with the atmosphere and its conditions. This data provides the wind load estimates, the temperature range for thermal effects, and precipitation loads from rain and snow, which codes require for safe and economical design. Other survey types focus on different aspects—geotechnical surveys examine soils and foundations, hydrological surveys study water flows and flood risks, and environmental surveys assess ecological and environmental impacts.