Roofs

Question 1

Elements:

Answer 1

Different parts of a roof and are made of members or components

Question 2

What are the 5 main elements?

Answer 2

Gable, hip, valley, verge and eaves

Question 3

Gable:

Answer 3

The triangular parton the end wall of a building that has a pitched roof

Question 4

Hip:

Answer 4

Where two external sloping faces meet

Question 5

Valley:

Answer 5

Where two internal sloping faces meet

Question 6

Verge:

Answer 6

Where the roof overhangs at the gable

Question 7

Eaves:

Answer 7

Lowest part of the roof surface that’s meets the outside walls

Question 8

What are the 10 main members?

Answer 8

• Rafters: common, crown, cripple, valley, hip, jack, rafter.
• Ridge board
• Wall plate
• Purlins

Question 9

Rafter:

Answer 9

Piece of timber that forms the roof.

Question 10

Common rafter:

Answer 10

Main load bearing timbers

Question 11

Hip rafter:

Answer 11

used where two external surfaces meet at an angle to provide fixing for jack rafters and transfers their load to the wall.

Question 12

Crown rafter:

Answer 12

The centre rafter in a hip end that transfers the load to the wall

Question 13

Jack rafter:

Answer 13

They close the gaps between common and hip and crown and hip rafters (wall plate to hip rafter)

Question 14

Valley rafter:

Answer 14

Forming an internal angle acting as a spine for fixing cripple rafters

Question 15

Cripple rafters:

Answer 15

Enclose the gap between common and valley rafters.

Question 16

Ridge board:

Answer 16

A horizontal board at the apex acting as a spine most rafters are fixed on.

Question 17

Wall plate:

Answer 17

the foundation of the roof that distributes weight and provides support for rafters.

Question 18

Purlins:

Answer 18

Horizontal beams that support the rafters midway between the ridge and the wall plate.