CPC CPC Construction Methods & Materials

Question 1

Which concrete curing method involves covering freshly placed concrete with wet burlap or curing blankets?

Accepted Answer

Wet curing

Answer

Membrane curing

Answer

Steam curing

Answer

Chemical curing

Question 2

What is the primary purpose of adding fly ash as a supplementary cementitious material in concrete?

Accepted Answer

Reduce water demand and improve long-term durability

Answer

Increase early strength

Answer

Increase unit weight

Answer

Speed up setting time

Question 3

In steel construction, what does the term 'camber' refer to?

Accepted Answer

Intentional upward curvature built into a beam

Answer

Horizontal bracing between beams

Answer

The slope of a roof beam

Answer

The depth-to-span ratio

Question 4

Which masonry unit is classified as a hollow unit under ASTM standards?

Accepted Answer

Concrete masonry unit with core area > 25% of gross area

Answer

Solid brick with net area ≥ 80%

Answer

Adobe block

Answer

Rubble stone

Question 5

What is the standard slump range for normal structural concrete used in columns and walls?

Accepted Answer

2–4 inches

Answer

0–1 inch

Answer

6–8 inches

Answer

9–10 inches

Question 6

Which type of pile is most suitable for soils with obstructions or boulders that prevent driven piles from reaching bearing strata?

Accepted Answer

Auger-cast (ACIP) pile

Answer

Timber friction pile

Answer

Steel H-pile

Answer

Precast concrete pile