Concrete Technology MCQs

Question 1

The operation of removing humps and hollows of uniform concrete surface, is known as

Accepted Answer

screeding

Answer

floating

Answer

trowelling

Answer

finishing

Question 2

The ratio of the length to breadth of a wooden float, is

Accepted Answer

75

Answer

45

Answer

55

Answer

65

Question 3

Construction joints are provided

Accepted Answer

all the above

Answer

where BM and SF are small

Answer

where the member is supported by other member

Answer

at 18 m apart in huge structures

Question 4

The surface where two successive placements of concrete meet, is known as

Accepted Answer

Construction joint

Answer

Contraction joint

Answer

Expansion joint

Answer

both A and B

Question 5

A construction joint is provided where

Accepted Answer

all the above

Answer

bending moment is small

Answer

shear force is small

Answer

the member is supported by other member

Question 6

Horizontal construction joints in concrete walls are generally provided at

Accepted Answer

all the above

Answer

soffit level

Answer

window sill level

Answer

floor level

Question 7

Pick up the correct statement from the following :

Accepted Answer

All the above

Answer

Construction joints in columns are provided a few cm below the junction of beam

Answer

Construction joints in columns are provided at the bottom haunching

Answer

Construction joints in beams and slabs are provided within middel third

Question 8

Expansion joints are provided if the length of concrete structures exceeds

Accepted Answer

45 m

Answer

10 m

Answer

15 in

Answer

15 in

Question 9

According to the recommendations of IS : 456-1978, the expansion joints

Accepted Answer

all the above

Answer

are provided where plane changes abruptly

Answer

are provided to ensure minimum resistance

Answer

are supported on separate columns