What are various type of loadings? Distinguish clearly between uniformlydistributed load, uniformly varying load and triangular load.

Loadings are forces applied to a structure or a body. They are categorized into different types based on their distribution along the length of the structure. Here are the three types of loadings you asked about:

1. Uniformly Distributed Load (UDL): This is a load that is spread evenly across the length of a structure. The load per unit length remains constant throughout. For example, the weight of the beams in a bridge is a uniformly distributed load on the columns supporting the bridge.

2. Uniformly Varying Load (UVL): This is a load that varies linearly along the length of the structure. One end of the structure has a maximum load while the other end has a minimum load (which could be zero). For example, the wind load on a billboard could be considered a uniformly varying load, as the wind pressure is higher at the top than at the bottom.

3. Triangular Load: This is a specific type of uniformly varying load where the load distribution forms a triangle. One end of the structure has a maximum load while the other end has zero load. The load increases or decreases linearly from one end to the other. An example of a triangular load could be the snow load on a sloping roof, where the load is maximum at the bottom and zero at the top.

In summary, the main difference between these three types of loadings is their distribution along the length of the structure. UDL has a constant load, UVL has a linearly varying load, and a triangular load is a specific type of UVL where the load is zero at one end.