BArch Bachelor of Architecture Building Materials and Construction Technology

Question 1

What is the primary difference between Type I and Type III Portland cement?

Accepted Answer

Type III is a high-early-strength cement with finer grinding for faster curing

Answer

Type I has higher strength at 28 days

Answer

Type III is used only for precast applications

Answer

Type I contains fly ash as a supplement

Question 2

What is the purpose of a 'vapor retarder' in a building envelope assembly?

Accepted Answer

To limit the diffusion of water vapor through the assembly and prevent condensation within the wall

Answer

To prevent water infiltration during rain events

Answer

To reflect solar radiation from the exterior

Answer

To provide fire protection to the insulation

Question 3

Which steel section is most efficient for spanning long distances as a floor beam due to its depth-to-weight ratio?

Accepted Answer

Wide-flange (W) section

Answer

Square hollow section (HSS)

Answer

Angle (L) section

Answer

Tee (WT) section

Question 4

What does 'R-value' measure in building insulation?

Accepted Answer

Thermal resistance (how well a material resists heat flow)

Answer

Thermal conductivity (how easily heat flows through a material)

Answer

Reflectivity of a surface

Answer

Fire resistance rating in hours

Question 5

In masonry construction, what is a 'lintel'?

Accepted Answer

A horizontal structural element spanning an opening (door or window) in a masonry wall

Answer

A horizontal mortar joint between courses

Answer

A type of decorative brick bond pattern

Answer

The vertical joint between masonry wythes

Question 6

Which roofing system is most appropriate for a low-slope (flat) commercial roof in the US?

Accepted Answer

Thermoplastic polyolefin (TPO) single-ply membrane

Answer

Asphalt shingles

Answer

Clay tile

Answer

Standing-seam metal roofing