Unit 211 Floor Joists

Open Ended

Explain why it is important for carpenters to be familiar with timber floor components even though solid concrete floors are now more common in new-build construction.

Multiple Select

Based on the diagrams and descriptions, which types of joists are typically found around stairwell openings?

• Bridging joists and trimming joists

• Trimmer joists and trimmed joists

• Bridging joists and trimmer joists

• Trimming joists and trimmed joists

Multiple Select

Which of the following are methods used to support joists for floors and flat roofs?

• Built-in

• Joist hangers

• Wall plates

• Bridging joists

Multiple Choice

What is the main purpose of a wall plate in timber ground floors and flat roofs?

• To provide a level surface for joists to be fitted

• To prevent moisture from entering the wall cavity

• To support the weight of the roof only

• To connect joists to beams

Multiple Choice

Which component provides a level surface for fixing joists in a suspended timber ground floor?

• Wall plate

• Fender wall

• Hearth framing

• Oversite concrete

Open Ended

Explain the purpose of the honeycombed sleeper wall in timber ground floor construction.

Multiple Select

What are two advantages of using I-beams (eco joists) over traditional solid timber joists?

• They are lighter and available in longer lengths

• They are more expensive

• They shrink and twist more easily

• They can be spaced at greater centres

Multiple Choice

Which of the following is NOT a main type of strutting used in floor joists?

• Solid

• Herringbone

• Galvanised steel

• Plastic

Multiple Choice

What is the main disadvantage of solid strutting in floor joists?

• It is difficult to install

• It is expensive

• Struts can become loose as joists shrink

• It requires special tools

Multiple Select

Which of the following statements about herringbone strutting are correct?

• It uses timber battens cut diagonally between joists

• It is considered the least effective method

• Struts tighten as the joists shrink

• It is secured with nails