Activity – 12938 (v4) Construct basic garden edge retaining walls as a BCATS project

Student name:

8.000m 8.000m The circular section of a small residential garden (shown) is to be retained using 0.500m landscape edging.
The edging is to be set in a trench of concrete 0.100m wide and 0.150 deep.
Calculate quantities of materials for this job. Show your workings.

Material	Amount required

Complete the order form your teacher gives you.

What do you need to consider if you are planning a thick wall construction?

Describe how to assemble a length of landscape edging.

What determines the depth and spacing of the posts for a timber post and rail retaining wall?

What is the minimum level of timber treatment required for the following:

Retaining wall uprights?

Retaining wall horizontal members?

Why should you allow at least 48 hours for the concrete in the post holes to gain strength before backfilling?

What is hydrostatic pressure?

What type of protection is required for fixings for a retaining wall?

What is the purpose of the drainage coil at the base of the inside of a retaining wall?

Why is it necessary to leave a space behind a timber post and rail retaining wall?