Activity – 12935 (v4) Construct a spaced residential deck up to one metre high as a BCATS project

Student name:

Calculate the listed materials required for the following deck, attached to a house, to be built on a level site. Show your working on a separate sheet.

Width	2.450m

Length	3.500m

Top of deck	450mm above ground level

2 anchor piles,
4 intermediate piles	125mm x 125mm H5

Anchor pile holes	350mm x 350mm

Intermediate piles holes	250mm x 250mm

2 rows of bearers	100mm x 75mm H3.2

Joists	100mm x 50mm @ 600 centres H3.2

Grip tread decking	88mm x 32mm H3.2

Material	Amount required

Complete the order form your teacher gives you.

Why should you use string lines when setting out pile positions?

If a pile needs to be cut to length, which end should go in the ground?

What size timber is required for deck joists spaced at 600mm, with a 2.000m span?

What are the benefits of laying decking:

a) Smooth side up?

b) Grooved side up?

What type of nails should be used to fix 21mm decking exposed to the weather?