Drainage

What is the minimum flexibility for a draincoil system around corners

• 500mm

• 300mm

• 400mm

• 1m

What is the recommended pipe underlay

• 300mm

• 70mm

• 85mm

• 50mm

The trench width should be greater than the pipe by how much

• 600mm

• 1m

• 200mm

• 50mm-100mm

Drain coil should never be connected to

• Sewerage

• Non slotted pvc pipe

• Slotted pvc pipe

• All the above

Which one of these best describes the term permeability

• ( FilteraIion of the soil)Drainage

• To achieve a ridiculous amount of curls in your hair

• The amount of water collected behind a retaining wall

• The amount of water a swale picks up

Ideally a strip drain should be imbedded into

• 75mm of toppings

• 50mm of concrete

• 300mm crush rock

• 100mm wash sand

What environmental issues can occur when installing a drainage system

• damage to roots and surrounding vegetation

• If the material can be classed as recyclable

• All the above

• All the above

What are the negatives with elevated driveway crossings

• Cost & disruption to mower paths slashing & maintenance

• Too many cars

• The thickness of the concrete

• All the above

At grade crossings require a maximum slope of

• 1%

• 20%

• 10%

• 30%

What team did Lance (Buddy) Franklin play for before he arrived at the swans

• Eagles

• Hawks

• Blues

• Crows