Structural Carpentry Quiz

What specific precaution is required for suspended timber ground floors?

• Waterproofing

• Good cross-ventilation of the subfloor

• Painting

• Insulation

What is the role of a trimmer joist?

• To support the trimmed joists

• To span from wall to wall

• To provide insulation

• To enhance structural strength

What is the purpose of airbricks in sleeper walls?

• To support the structure

• To allow air circulation

• To provide insulation

• To enhance aesthetic appeal

What is the rule-of-thumb formula for calculating joist depth?

• (span of joist in feet) + 10

• (span of joist in feet) + 20

• (span of joist in feet) + 30

• (span of joist in feet) + 40

What problem do I-joists not suffer from?

• Shrinking

• Twisting

• Cupping

• All of the above

What is a key feature of laminated timber joists?

• Made from a single large piece of timber

• Made by laminating smaller pieces of timber

• Cannot be used for structural purposes

• Heavier than solid timber joists

What is the most common form of floor joist construction?

• Double floor

• Single floor

• Triple floor

• Quadruple floor

What is the role of a binder in double floor construction?

• To provide aesthetic appeal

• To support the bridging joists

• To reduce construction costs

• To increase the floor height

What is the purpose of binders in structural carpentry?

• To support the roof

• To span from beam to beam

• To provide insulation

• To enhance aesthetic appeal

What is the function of bridging joists?

• To support the roof

• To span from one side of the building to the other

• To support the binders

• To enhance the building's appearance