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INFRASTRUCTURE ENGINEERING > Lecture 21 - Sustainable Drainage > Flashcards

Lecture 21 - Sustainable Drainage Flashcards

1
Q

What is ‘Standard Drainage’?

A
  • Foul Water
  • Surface Water
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2
Q

What are SuDS?

A

Sustainable Drainage Systems that manage stormwater locally to mimic natural drainage and encourage its infiltration, attenuation and passive treatment.

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3
Q

What are the 4 pillars of SuDS?

A
  • Biodiversity
  • Amenity
  • Water Quality
  • Water Amenity
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4
Q

Discharge Points Hierarchy?

A
  1. Soakaways
  2. Local Watercourse
  3. Surface Water sewer
  4. Combined water/Foul water sewer
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5
Q

What are two ways that can slow down incoming flow?

A
  • Orifice Plate
  • Hydrobrake
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6
Q

Examples of SuDS

A
  • Permeable Paving
  • Swales
  • Ponds
  • Attenuation Cellular Storage
  • Rain Gardens
  • Green Roofs
  • Filter Drains
  • Soakaway
  • Rain Harvesting
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7
Q

What do longer stormed rain events produce?

A

More volume

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8
Q

What causes shorter storms?

A
  • Peak Flow Rate
  • High Intensity
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9
Q

What estimates the Peak flow?

A

Rational Method Q=CiA

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INFRASTRUCTURE ENGINEERING (11 decks)

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