CSI Construction Materials & Systems 3

Question 1

What type of glass is produced by heating annealed glass and rapidly cooling it to create surface compression?

Accepted Answer

Tempered glass

Answer

Laminated glass

Answer

Heat-strengthened glass

Answer

Insulating glass

Question 2

In masonry construction, what is the purpose of a relieving angle (shelf angle)?

Accepted Answer

To transfer accumulated masonry dead load to the building structure at each floor

Answer

To anchor the masonry veneer to the structural backup

Answer

To provide a weep hole drainage path at the base of the wall

Answer

To control cracking caused by thermal expansion

Question 3

Which insulation material has the highest R-value per inch among commonly used rigid insulation products?

Accepted Answer

Polyisocyanurate (polyiso)

Answer

Expanded polystyrene (EPS)

Answer

Extruded polystyrene (XPS)

Answer

Closed-cell spray polyurethane foam (ccSPF)

Question 4

What does the term 'galvanic corrosion' describe in the context of construction materials?

Accepted Answer

Electrochemical corrosion when dissimilar metals contact each other in the presence of an electrolyte

Answer

Rust formation on steel exposed to moisture and oxygen

Answer

Corrosion of aluminum cladding due to acid rain

Answer

Oxidation of copper flashing over time

Question 5

In wood-frame construction, what is the structural purpose of a rim joist (band joist)?

Accepted Answer

To provide lateral bracing for interior floor joists against overturning

Answer

To transfer loads from studs above down through the floor system

Answer

To provide a nailing surface for sheathing and close off floor joist ends

Answer

To act as a header over window and door openings

Question 6

What is the primary function of a cavity (drainage) wall construction method in masonry systems?

Accepted Answer

To provide a drainage path for water that penetrates the outer wythe

Answer

To increase the thermal mass of the wall assembly

Answer

To eliminate the need for flashing at window sills

Answer

To allow the use of non-weather-resistant brick at the exterior

Question 7

Which property of steel is defined as the stress at which a material exhibits a specified limiting permanent set?

Accepted Answer

Yield strength

Answer

Ultimate tensile strength

Answer

Modulus of elasticity

Answer

Ductility