Building Construction

Question 1

1Aggregate in concrete is

Easy

A. cement only B. sand and gravel or crushed stone C. steel D. water

Question 2

2Mild steel reinforcement bars are protected in concrete by

Easy

A. adequate concrete cover B. nothing C. oil D. paint only

Question 3

3The slump test is used to measure the

Medium

A. colour of cement B. strength of hardened concrete C. workability of fresh concrete D. size of aggregate

Question 4

4Concrete cubes 150 mm fail at 675 kN. The compressive strength is

Hard

A. 45 N/mm² B. 30 N/mm² C. 22.5 N/mm² D. 4.5 N/mm²

Question 5

5Seasoning of timber reduces its

Hard

A. moisture content B. grain C. length D. colour

Question 6

6Concrete is made by mixing

Easy

A. lime and water only B. cement, sand, aggregate and water C. sand and clay D. cement and paint

Question 7

7Steel bars placed in concrete to resist tension are called

Easy

A. aggregate B. reinforcement C. damp-proof course D. formwork

Question 8

8Keeping fresh concrete moist for several days so it gains strength is

Easy

A. screeding B. compacting C. curing D. batching

Question 9

9Honeycombing in concrete is caused by

Hard

A. too much curing B. using steel C. poor compaction D. painting

Question 10

10Keeping fresh concrete moist so that it gains strength is

Easy

A. curing B. mixing C. batching D. compacting