Saturday, 2 January 2016

Types of loads

The basis requirement of any structural member  of building is that should be strong enough to carry or support all the possible type of load which acts on it.

1 dead

2live or imposed

3 impact

4 wind load

5 snow

6 earthquake

 1. dead load :-   dead load are permanent loads which are transferred to structural throughout the life span. the dead load in a building comprise the weight of roofs, floors, beams, columns, walls, partition walls etc

2. live load:- the load which keep on changing on time to time are called live loads. common example of such moving loads in a building re the weight of the person, weight of movable partition , weight of furniture's, home appliances, equipment etc. these loads are to be suitably assumed by the designer. it is one of the major loads in the design.

3. impact load:- it is caused by vibration or acceleration thus impact loads is equal to imposed loads incremented by some %. for ex, vibration of moving vehicle or machines

4 wind loads:- when wind is obstructed by the structure, it exerts a pressure on the structure known as wind pressure. wind pressure acts horizontally on the exposed vertical faces of the structure. wind loads is effective in case of tall buildings.

5. earthquake load:- earth causes horizontal and vertical ground shaking. the  horizontal and verticle shaking is usually most critical on building. every building and its portions should be designed and constructed to resist  the effect of earth ground motions.

6 Snow loads:- it acts on the roofs. roofs should be designed loads due to snow, whichever is more severe. for the building to be located in the regions wherever snow is likely to falls, this loads is to be considered. mountainous regions in northern parts of India are subjected to snow fall.

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