Stormwater Management

‘The pavements are raised and curb in order to form an edge channel, to which the road drainage can be directed from the center line of the road’

Identify which surface drainage based on this statement

• Valley drainage

• Surface edrainage

• Crowned drainage

• Sheet drainage

Explain why infiltration trenches is not suitable for sites with fine particles soils?

• High clogging potential without effective pre-treatment

• The groundwater maybe affected by the laying of new drains and foundations, and this can adversely affect trees and other vegetation which is to be retained

• The advantage of ensuring that surface water does not drain towards the buildings , but can appear strange when applied to large areas;

• Holes filled with stones, into which drainage water is directed so it is not suitable

Which the drainage water is directed to the center of a road or path?

• Double slope drainage

• Sheet drainage

• Crowned drainage

• Valley drainage

Which bond is suitable for vertical strength

• Herringbone bond

• Flemish bond

• Stack bond

• California weave

Which bricks bond that are not suitable for vertical strength?

• Stack bond

• Flemish bond

• English bond

• English cross

List the composite materials for concrete

List 5 types of concrete

Why does Broom finish and Salt finish suitable for wet areas?

• Has an effects such as waves and the sea

• Providing greater uniformity and eliminating the need to dress the stone

• The concrete surfaces create small ridges that provide for traction control and slip-resistant

• Making the pavement more compact and less likely to loosen up over time.

Identify 5 type of concrete finish

There 3 types of timber . Name it and their function as building materials