Answer to Question #236462 in Mechanical Engineering for Nimmi

Question

What are types of trusses define and explain

Answer 1

Types of trusses:

1) Warren truss - this is a type of truss in which the diagonal elements are alternatingly in compression and tension. All the truss elements in this type of trusses are of equal span length. Loads on the structure are spread on these equilateral triangles.

2) Pratt trusses (N trusses) - In normal Pratt truss, the diagonal truss elements are in tension due to gravity loads. These type of trusses are usually used in long span buildings that range from 20 to 100m in length where gravity loads are predominant.

3) North light truss - these type of trusses are used for short span trusses unlike the two above. These trusses allow for maximum benefit from natural lighting by the use of glazing in steeper pitch which naturally faces north to avoid solar gain.

4) Determinant trusses - these are trusses whose equilibrium check obey the formula m=2j-3

Where ; m= number of members

j= number of joints.

5) Indeterminate trusses - these type of trusses have equilibrium checks obeying the formula m>2j-3

6) Stable trusses - These are truss types whose equilibrium checks obey the formula m<2j-3