Elevator pit

[skipharper]

Is a sump pump required in an elevator pit? If yes, I understand everything the plumbing code requires and thanks in advance.

 

[Coug Dad]

It depends upon what version of the elevator code is adopted. Some versions required 50 gpm per car and others only the pit.

2.2.2.5 In elevators provided with Firefighters' Emergency Operation, a drain or sump pump shall be provided. The sump pump/drain shall have the capacity to remove a minimum of 11.4 m3/h (3,000 gal/h) per elevator.

 

[skipharper]

Thank You Sir!

 

[gbhammer]

A sump is not required, it is a design option.

 

[Coug Dad]

A sump is not required, it is a design option.

True, but a 50 gpm floor drain would be pretty big.

 

[mark handler]

Some states require them some don't.

 

[gbhammer]

A 4" drain can handle it, a 4" drain with a deep enough trap, enough head water, and the right fall on the horizontal line can handle well over 50 gpm.

 

[gbhammer]

some designers do not want a sump so as to avoid the oil minder system.

 

[gbhammer]

I had a case where a designer provided a drain and tank large enough to collect all the hydraulic fluid from the pit in the event of failure.

 

[mark handler]

I had a case where a designer provided a drain and tank large enough to collect all the hydraulic fluid from the pit in the event of failure.

What happens when the fire sprinklers fill the tank and sump.....

 

[Coug Dad]

My favorite was in a vehicle maintenance area where they took the drain from the oil change service pit to the elevator sump so they would only need one pump and one sand oil separator.

 

[gbhammer]

What happens when the fire sprinklers fill the tank and sump.....

itty Hmmmmmmm?

 

[globe trekker]

mark h. asked

What happens when the fire sprinklers fill the tank and sump.....

Not to be a smarty pants or anything, but you will have an overflow event when the containerdesignated to capture the sump wastes overflows. The spilling of elevator hydraulic oil & other

wastes might be an environmental issue as well.

Some thought might want to be given to properly designing an approved disposal method for

the sump wastes.

Just sayin'..

.

 

[jsheets]

Our jurisdiction requires duel sump pumps 2009 UPC 710 and an oil water separator 2009 UPC 1017. Chapter 7 of the 2009 UPC requires preventing oil from entering the sewer. Next week I'm meeting with an mechanical engineer on a oil sensing device (switch). If this device meets listing requirements we may consider omitting the oil water separator.

 

[north star]

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jsheets,

Welcome to The Building Codes Forum!

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[jsheets]

thanks jsheets