BCM Building Materials and Construction Methods

Question 1

The water-cement ratio (w/c ratio) in concrete mix design primarily affects:

Accepted Answer

Compressive strength and durability of the hardened concrete

Answer

A lower w/c ratio produces stronger, more durable concrete by reducing porosity, while a higher ratio weakens the paste matrix.

Question 2

Tensile strength is a structural weakness of concrete, which is why:

Accepted Answer

Steel reinforcing bars (rebar) are embedded in concrete to resist tension forces

Answer

Concrete is strong in compression but weak in tension, so steel reinforcement is added to carry tensile stresses in beams, slabs, and other members.

Question 3

Which type of foundation is used when soil at shallow depths is too weak to support structural loads?

Accepted Answer

Deep foundation (piles or caissons)

Answer

Deep foundations transfer loads through weak upper soils to stronger bearing strata or bedrock at greater depths using piles or drilled shafts.

Question 4

CMU stands for which common masonry construction material?

Accepted Answer

Concrete Masonry Unit

Answer

CMU (concrete masonry unit), commonly called a concrete block or cinder block, is a standard hollow or solid precast concrete building unit.

Question 5

In steel construction, the term 'wide flange' (W-shape) refers to:

Accepted Answer

An I-shaped structural steel section with parallel flanges used for beams and columns

Answer

Wide-flange sections are the most common structural steel shapes, characterized by their I-profile with flanges that are approximately the same width as the web depth.

BCM - Bachelor of Construction Management Practice Test

BCM - Bachelor of Construction Management Practice Test

BCM Building Materials and Construction Methods