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Land Drainage > Land Drainage Introduction > Flashcards

Land Drainage Introduction Flashcards

1
Q

What coil lengths are available for 160mm land drain?

A

25m, 45m & 50m

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2
Q

What is the smallest diameter land drain JDP provide?

A

25mm

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3
Q

What is the main BS standard for land drain?

A

BS 4962

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4
Q

100mm land drain is available in what coil lengths?

A

25, 50m & 100m

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5
Q

When laying land drain, why would you use a reducer?

A

To connect different diameters of pipe in a straight line

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6
Q

Name 3 main suppliers of land drain.

A

Wavin, Naylor, Polypipe

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7
Q

Which land drain is available in 500m coils?

A

25mm

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8
Q

What is the minimum depth cover for land drain systems?

A

450mm

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9
Q

Does land drain have a smooth or corrugated bore?

A

Corrugated

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10
Q

Which supplier only provides BSI KiteMarked land drain?

A

Wavin

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11
Q

Which land drain is imported into the UK?

A

25mm land drain

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12
Q

Land drain is commonly used in which industries?

A

Agriculture and Construction

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13
Q

Early land drains depended on ditches. True or false?

A

TRUE

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14
Q

Name 3 different plastics in which land drain is available.

A

PVC, HDPE, PP

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15
Q

For what are the letters HDPE an abbreviation?

A

High Density Polyethylene

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16
Q

True or false; geotextiles can be used in conjunction with land drain.

A

TRUE

17
Q

Why would you use unperforated land drain?

A

Used mainly in carrier applications

18
Q

Why would land drain be used on highways?

A

Used as embankment, verge and central reseveration drainage

19
Q

When would land drain be used in gardens?

A

As soakaway drainage in gardens

20
Q

Unperforated 60mm land coil is available in what lengths?

A

25m, 50m and 150m

21
Q

Unperforated 80mm land coil is available in what lengths?

A

25m, 50m & 100m

22
Q

Perforated land drain is used for what purpose?

A

To collect and remove excess surface water and distribute to a suitable collection point.

23
Q

200m land drain coil is available in what length coils?

A

40m

24
Q

Grain Plastics manufacture what diameter land drain?

A

25mm diameter land drain (in 250m and 500m coils)

25
Q

PPG4 is an abbreviation. What does it stand for?

A

Planning Policy Guidelines 4

26
Q

What would be the characteristics of an appropriate back fill for land drain?

A

Durable, permeable and free from pollutants.

27
Q

True or false: perforated coil is used as a carrier drain.

A

FALSE

28
Q

True or false: DYKA manufactures land drain.

A

FALSE

29
Q

True or false: General Purpose Duct (GP Duct) is used for outfall pipes.

A

TRUE

30
Q

Unperforated land drain is available in what length coils?

A

25m, 50m & 100m

Land Drainage (1 decks)

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