Carpentry Level 2 Questions and
Answers | Latest Version | 2024/2025 |
Correct & Verified
What is the first step in constructing a pitched roof?
✔✔ Lay out and install the ridge board, which serves as the peak of the roof structure.
How do you measure the pitch of a roof?
✔✔ By calculating the ratio of the rise (vertical distance) to the run (horizontal distance),
typically expressed as "rise over run."
What is a common material used for rafters in roofing?
✔✔ Lumber, such as pine or fir, or engineered wood products like LVL (Laminated Veneer
Lumber).
What is the purpose of a birdsmouth cut in a rafter?
✔✔ To allow the rafter to rest securely on the wall plate, providing stability and support.
What is the function of a collar tie in roof framing?
1
,✔✔ To prevent the rafters from spreading under the weight of the roof, maintaining the roof's
structural integrity.
What is the typical width of a ceiling joist in residential construction?
✔✔ 2x6, 2x8, or 2x10, depending on the span and load requirements.
How do you prevent a roof from sagging during framing?
✔✔ By using properly sized rafters and ensuring that all connections are secure and braced.
What is the difference between a hip rafter and a common rafter?
✔✔ A hip rafter is installed at an angle to form the corners of the roof, while a common rafter
runs straight from the ridge to the eaves.
How do you install a ridge beam in roof framing?
✔✔ Position the ridge beam at the peak of the roof and ensure that it is level and securely
supported by the walls or beams below.
What is the purpose of roof trusses in construction?
2
,✔✔ To provide a pre-engineered, lightweight, and efficient system for supporting the roof,
reducing the need for internal load-bearing walls.
What is a gable end in roof framing?
✔✔ The triangular section of the roof at the end of a gable roof, often supporting the end of the
ridge board and the rafters.
What is the role of purlins in roof framing?
✔✔ To provide horizontal support to the rafters and help distribute the load evenly.
What is the difference between a shed roof and a gable roof?
✔✔ A shed roof has a single sloping surface, while a gable roof has two sloped surfaces that
meet at a ridge.
What is the purpose of a valley rafter in roof framing?
✔✔ To support the intersection where two sloping roof sections meet, forming a "V" shape.
How do you install a roof sheathing?
3
, ✔✔ Lay the sheets of plywood or OSB across the rafters, starting at the bottom and working
upward, securing them with nails or screws.
What is the purpose of a fascia board in roofing?
✔✔ To cover the exposed ends of the rafters and create a finished edge for the roof.
How do you secure a roof deck in place?
✔✔ Attach the decking material to the rafters with nails or screws, ensuring proper spacing for
ventilation and expansion.
What is the primary benefit of using trusses over traditional rafters?
✔✔ Trusses are pre-engineered to be lightweight, cost-effective, and capable of spanning greater
distances without additional support.
What is the difference between a flat roof and a low-slope roof?
✔✔ A flat roof has a minimal pitch, often flat or slightly sloped, while a low-slope roof has a
small but noticeable incline.
What is the function of a roof ridge vent?
4
Answers | Latest Version | 2024/2025 |
Correct & Verified
What is the first step in constructing a pitched roof?
✔✔ Lay out and install the ridge board, which serves as the peak of the roof structure.
How do you measure the pitch of a roof?
✔✔ By calculating the ratio of the rise (vertical distance) to the run (horizontal distance),
typically expressed as "rise over run."
What is a common material used for rafters in roofing?
✔✔ Lumber, such as pine or fir, or engineered wood products like LVL (Laminated Veneer
Lumber).
What is the purpose of a birdsmouth cut in a rafter?
✔✔ To allow the rafter to rest securely on the wall plate, providing stability and support.
What is the function of a collar tie in roof framing?
1
,✔✔ To prevent the rafters from spreading under the weight of the roof, maintaining the roof's
structural integrity.
What is the typical width of a ceiling joist in residential construction?
✔✔ 2x6, 2x8, or 2x10, depending on the span and load requirements.
How do you prevent a roof from sagging during framing?
✔✔ By using properly sized rafters and ensuring that all connections are secure and braced.
What is the difference between a hip rafter and a common rafter?
✔✔ A hip rafter is installed at an angle to form the corners of the roof, while a common rafter
runs straight from the ridge to the eaves.
How do you install a ridge beam in roof framing?
✔✔ Position the ridge beam at the peak of the roof and ensure that it is level and securely
supported by the walls or beams below.
What is the purpose of roof trusses in construction?
2
,✔✔ To provide a pre-engineered, lightweight, and efficient system for supporting the roof,
reducing the need for internal load-bearing walls.
What is a gable end in roof framing?
✔✔ The triangular section of the roof at the end of a gable roof, often supporting the end of the
ridge board and the rafters.
What is the role of purlins in roof framing?
✔✔ To provide horizontal support to the rafters and help distribute the load evenly.
What is the difference between a shed roof and a gable roof?
✔✔ A shed roof has a single sloping surface, while a gable roof has two sloped surfaces that
meet at a ridge.
What is the purpose of a valley rafter in roof framing?
✔✔ To support the intersection where two sloping roof sections meet, forming a "V" shape.
How do you install a roof sheathing?
3
, ✔✔ Lay the sheets of plywood or OSB across the rafters, starting at the bottom and working
upward, securing them with nails or screws.
What is the purpose of a fascia board in roofing?
✔✔ To cover the exposed ends of the rafters and create a finished edge for the roof.
How do you secure a roof deck in place?
✔✔ Attach the decking material to the rafters with nails or screws, ensuring proper spacing for
ventilation and expansion.
What is the primary benefit of using trusses over traditional rafters?
✔✔ Trusses are pre-engineered to be lightweight, cost-effective, and capable of spanning greater
distances without additional support.
What is the difference between a flat roof and a low-slope roof?
✔✔ A flat roof has a minimal pitch, often flat or slightly sloped, while a low-slope roof has a
small but noticeable incline.
What is the function of a roof ridge vent?
4
