Civil engineering interview questions of DBL ,L&T etc..

Unit weight of concrete - RCC- 2500kg/cum & PCC - 2400kg/cum
Steps involved in concrete process :-

Batching
Mixing
Transporting
Placing
Compacting

Trapezodial footing volume formula:-

(L*B*H)+{h/3*(A1+A2+√A1A2)}

Standard list count of theodolite is 20'
In plastering first coat is known as under coat

What is the meaning of M50 ?

M= mix

50= characteristic compressive strength of cube size is 150 mm *150 mm * 150 mm after 28 days of curing.

Unit is N/sqmm

Instrument used for specific gravity is HYDROMETER

Size of mould to check compressive strength of cement is 70.6mm* 70.6mm*70.6mm

Main bar always a price of direction
Distribution bar always apply longer direction

Weight of concrete cube (150mm*150mm*150mm) = 8.1 kg

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