General

Question 1

How do we ensure that frames resist racking or falling over?

Answer 1

By utilising cross bracing, gable end walls for bracing, whipped ends for bracing

Question 2

Hip tiles are nailed to what?

Answer 2

The hip rafter

Question 3

What is the typical width for lead Valley gutters?

Answer 3

125mm

Question 4

Tiling battens are typically what size?

Answer 4

38 x 25mm

Question 5

Slates are typically nailed to what size of batten?

Answer 5

50x25mm

Question 6

Roofing felt is laid under what?

Answer 6

Timber battens

Question 7

Ridge tiles are usually bedded in what?

Answer 7

Mortar

Question 8

A low-pitched roof is typically between what two degrees to the horizontal?

Answer 8

10 and 30 degrees

Question 9

The principal coverings for low pitched roofs are what?

Answer 9

Copper and aluminium strips 450 or 600mm wide (both of which are comparatively light in weight and therefore do not require heavy timbers to support them).

Question 10

Can copper and aluminium sheets be bent without damage to the material?

Answer 10

Yes

Question 11

In timber roof construction the insulation boards are nailed directly to the rafters. The counter battens over the roofing felt (DPM) and insulation is fixed how?

Answer 11

By nailing through the insulation to the rafters.

Question 12

A roof is defined as flat when its weather plain is finished at a slope of what degrees?

Answer 12

Between 1 and 5

Question 13

In a flat roof, timber joists are generally spaced at what centres?

Answer 13

400 to 600mm centres

Question 14

What is rough boarding?

Answer 14

When boards are left rough surfaced from the saw