SCE Civil Engineering Fundamentals

Question 1

What is the standard concrete compressive strength test specimen used in Saudi Arabia?

Accepted Answer

150mm cube specimen tested at 28 days

Answer

6×12 inch cylinder

Answer

4×8 inch cylinder

Answer

100mm cube specimen

Question 2

In reinforced concrete design, the purpose of minimum reinforcement is to:

Accepted Answer

Prevent sudden brittle failure when the concrete cracks

Answer

Reduce cost

Answer

Increase workability

Answer

Improve aesthetics

Question 3

The California Bearing Ratio (CBR) test is used to evaluate:

Accepted Answer

The strength of subgrade and base course materials for pavement design

Answer

Concrete compressive strength

Answer

Steel tensile strength

Answer

Soil permeability

Question 4

What is the water-cement ratio's effect on concrete strength?

Accepted Answer

Lower w/c ratio generally produces higher strength concrete

Answer

Higher w/c ratio produces higher strength

Answer

w/c ratio has no effect on strength

Answer

Only affects workability, not strength

Question 5

The maximum allowable settlement for most structures in Saudi Arabia's sandy soils is typically:

Accepted Answer

25mm total settlement

Answer

100mm total settlement

Answer

5mm total settlement

Answer

50mm total settlement

Question 6

What type of foundation is most commonly used for high-rise buildings in Jeddah's weak soil conditions?

Accepted Answer

Bored piles (drilled shafts) bearing on rock

Answer

Isolated footings

Answer

Strip foundations

Answer

Raft foundations alone