Commerical Floor Drains, Gang Showers , Washing Mschines, Curcukar Rain Water Leaders Flashcards

1
Q

When do establishments need an oil interceptor?

A

Establishments that discharge motor oil and grease into the drain system

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2
Q

When can one trap serve a group of floor drains or shower drains , washing machine, machines, group of lab sinks

A

If the fixtures are in the same room and are not located where they can receive food or other organic matter

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3
Q

How many showerheads do gang showers usually consist of

A

2-12

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4
Q

What’s the minimum spacing for gang showers between showerheads

A

30”

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5
Q

What preassembled provision do column showers usually come with

A

Provision for a drain and vent connection at the bottom

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6
Q

What’s the maximum amount of shower heads served by a single drain in a gang shower

A

6

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7
Q

How should the floor be sloped in a gang shower?

A

So so that water cannot flow from one showerhead into the path of another shower head

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8
Q

What other option do you have for a washing machine to drain in a private home?

A

Can hook the pipe over the edge of a laundry tub

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9
Q

What rule stipulate when a soil or waste pipe serves more than one clothes washer

A

Shall not serve for connecting other soil or waste pipes

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10
Q

Where are rain leaders usually placed

A

Against columns or walls in order to be unobtrusive as possible

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11
Q

For rainwater later, the vertical distance from the roof to the base or first 90 fitting should not exceed how long

A

5’

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12
Q

For a rainwater leader, what’s the maximum distance in an offset? A provision for expansion.

A

5ft horizontal portion

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13
Q

What is the sizing of rainwater leaders based off of?

A

Maximum amount of rain, the fall in each geographical location during a 15 minute period

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14
Q

What’s one exception for hooking up a fixture to a rainwater leader

A

Drinking fountain with a check valve is allowed

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15
Q

How should roof drains be spaced for rainwater leaders?

A

No more than 15m from the edge of the roof and no more than 30 m from adjacent drains

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16
Q

How often should there be a drain for a rainwater leader

A

Every 900 m2

17
Q

When plumbing fixtures are connected to a combined sewer what must happen to the hydraulic load?

A

Hydraulic load from the fixtures must be converted from fixture units to lps or in a case of continuous flow from leaders per second 2 L

18
Q

What is the conversion factor from changing fixture unit units into litres

A

9.1 L per fixture unit except when the load is 260 fixture units or less in which case around figure of 2360 L is used