BCM Building Materials and Construction Methods 3

Question 1

Which type of pile installation method is considered displacement because it pushes soil laterally as the pile is driven?

Accepted Answer

Driven steel H-pile or concrete pile

Answer

Drilled shaft (caisson)

Answer

Auger cast pile

Answer

Micro pile

Question 2

The purpose of dewatering during construction excavation is to:

Accepted Answer

Remove groundwater from the excavation to enable dry working conditions

Answer

Control stormwater runoff from the construction site

Answer

Drain plumbing systems before demolition

Answer

Reduce concrete mixing water content on-site

Question 3

Light gauge steel framing (LGSF) is most commonly used in US construction for:

Accepted Answer

Non-structural interior partition walls and exterior curtain wall framing in commercial buildings

Answer

Primary structural frames in high-rise construction

Answer

Underground utility conduit supports

Answer

Concrete formwork support systems

Question 4

Shotcrete (gunite) is concrete that is:

Accepted Answer

Pneumatically projected through a hose onto a surface at high velocity

Answer

Poured into prefabricated forms and vibrated

Answer

Mixed on-site with excess water for easier placement

Answer

Precast in a plant and delivered to the site

Question 5

Glulam (glued laminated timber) structural members offer which advantage over solid-sawn timber?

Accepted Answer

Greater strength and larger available sizes with reduced defects compared to solid-sawn lumber

Answer

Lower cost than standard dimensional lumber for the same span

Answer

Superior fire resistance compared to steel and concrete

Answer

Immunity to moisture damage and decay

Question 6

Thermal bridging in building construction refers to:

Accepted Answer

Conductive heat transfer through structural elements that bypass the insulation layer

Answer

Heat generated by construction equipment and workers inside a building

Answer

Transfer of heat through HVAC ductwork to unconditioned spaces

Answer

Radiant heat exchange between glass and interior surfaces