What is BS EN 12192-2:2013?

BS EN 12192-2:2013 is a technical standard that pertains to the calculation of static and dynamic wind actions on silos, tanks, and pipelines. It provides guidelines for engineers and designers in determining the design loads and forces exerted by wind on structural elements. The standard covers various aspects related to wind actions, including wind speed, pressure coefficients, and load combinations.

Wind Speed and Pressure Coefficients

One of the key considerations in BS EN 12192-2:2013 is determining the appropriate wind speed for a particular structure. The standard defines different wind zones with varying wind speeds based on geographical location. Engineers need to identify the relevant wind zone and corresponding wind speed to calculate the wind pressures acting on the structure's surface areas.

The standard further provides detailed pressure coefficients for different types of structures, taking into account factors such as shape, size, and surface roughness. These coefficients allow engineers to estimate the distribution of wind loads on the structure effectively. By combining the wind speed and pressure coefficients, the design wind pressure can be calculated accurately.

Calculation of Wind Loads

To determine the wind loads on silos, tanks, and pipelines, engineers follow specific procedures laid out in BS EN 12192-2:2013. The standard outlines methods for calculating both the static and dynamic wind actions. Static wind actions refer to the steady-state wind loads, while dynamic wind actions account for the effects of gusting or fluctuating winds.

For static wind actions, the standard provides formulae to calculate the wind pressure at different heights and directions, considering factors like terrain roughness, atmospheric conditions, and shielding effects. These pressure values are then integrated over the exposed surface areas of the structure to derive the total wind loads.

When it comes to dynamic wind actions, BS EN 12192-2:2013 defines specific procedures for assessing gust response factors and dynamic amplification factors. These factors account for the possible increase in wind loads due to strong gusts or resonant vibrations caused by wind-induced oscillations. By employing these procedures, engineers can accurately evaluate the dynamic wind actions on structures and ensure their safety and stability.

Load Combinations and Structural Design

The final aspect covered by BS EN 12192-2:2013 is load combinations. The standard provides guidelines on how to combine wind loads with other design loads, such as dead loads, live loads, and seismic loads. These load combinations are essential for structural designers to ensure that the structures can withstand the combined effects of multiple forces without failure.

By following the principles outlined in BS EN 12192-2:2013, engineers can design silos, tanks, and pipelines that can resist wind forces effectively, ensuring their longevity and safety in various geographical locations. Compliance with this technical standard is crucial for ensuring the integrity and stability of structures subject to wind actions.