Understanding Roof Components and Structures

What is the purpose of a wall plate in roofing?

• To support the ridge

• To provide a base for rafters to be fixed

• To cover the roof

• To act as a decorative element

Which component of the roof is used to tie rafters into the gable wall?

• Ridge

• Purlin

• Restraint straps

• Jack rafters

What is the function of a ridge in a roof structure?

• To support the wall plate

• To provide a horizontal line at the top of the roof

• To act as a decorative element

• To support the hipped-end

Which of the following is a type of rafter that is shorter and used in hip roofs?

• Cripple rafters

• Jack rafters

• Ridge rafters

• Valley rafters

What is the purpose of noggins in a roof structure?

• To support the ridge

• To provide additional support under straps

• To act as a decorative element

• To cover the roof

Which component is used to tie down the wall plate at 2 m centres?

• Ridge

• Purlin

• Twisted tie down strap

• Jack rafters

What is the purpose of a purlin in a roof structure?

• To support the ridge

• To provide intermediate support for rafters

• To act as a decorative element

• To cover the roof

Which component is used to connect rafters to the ridge?

• Wall plate

• Ridge rafter

• Rafters nailed to ridge

• Jack rafters

What is the function of a hipped-end in a roof structure?

• To support the ridge

• To provide a sloping end to the roof

• To act as a decorative element

• To cover the roof

Which component is used to secure rafters to the wall plate?

• Ridge

• Purlin

• Rafters clipped, tied or skew nailed

• Jack rafters