Interview questions for civil engineer

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Civil engineering 
                                The field deals with the planning, designing & construction of buildings and various other structures like dams, bridge , tunnel , road  and other civil structure.

1) Concrete test
                         
* Slump test
* Comprehensive strength test
* Water permeability test
* Water absorption test

2) Least cover provided for RCC member

 Footing         50 mm

Column        40 mm

Beam            25 mm

Slab              20 mm

3) Difference between one way slab and two way slab

 ★ one way slab :      Ratio of longer span /  shorter span > 2

★ two way slab :    Ratio of longer span / shorter span < 2

4) moment of inertia
                                       A quality expressing a body tendency to resist angular acceleration which is the su of the products of the mass of each particle in the body with the square of its distance from the axis of rotation.

5) crank length in the slab
                                                 The crank length in slab is 0.42

D = D is the depth of slab . Top cover - Bottom cover

Unit weight of concrete
                                           The unit weight of concrete depends on the type of aggregate and amount of voids. As per is : 456- 2000 unit weight of PCC is 24 kn/ m3 and RCC is 25 KN / m3

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