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RE: Elevator Sump Pit[Subject Prev][Subject Next][Thread Prev][Thread Next]
- To: <seaint(--nospam--at)seaint.org>
- Subject: RE: Elevator Sump Pit
- From: "Collier, Randy" <rhcollier(--nospam--at)winkinc.com>
- Date: Wed, 4 Jan 2006 09:36:57 -0600
I’m not an expert on elevators, but perhaps this will help:
Prior to 1973, elevators remained active during a fire,
permitting a car full of people to arrive at the fire floor with tragic
results. Because of this dangerous situation, changes to elevators were implemented
under ASME A17.1 Safety Code for Elevators and Escalators in three
phases. New elevators
installed under Group III requirements which became effective 10/26/98 are
required to have either a drain or a sump with a sump pump. The sump pump shall
be capable of operation without human intervention. An elevator pit drain may
not drain to another elevator pit. Drain and/or Sump pump lines may not be
directly connected to sewer lines, an air gap is required to prevent sewer
gases from entering the elevator pit and hoistway. Sumps must be protected with
a grate or other means to prevent a tripping hazard. The requirement of
elevator pit drains and/or sump pumps is designed to provide a safe and dry pit
area for service and inspection. Most new elevator hoistways have automatic
water sprinklers for fire suppression so a means needs to be provided for
evacuating water from the elevator pit should a sprinkler head go off. Also,
the elevator pit is usually the lowest point in the building. The water from
sprinkler heads in other parts of the building would also likely end up in the
elevator pit as well as a spilled janitors cleaning bucket.
Randall H. Collier, P.E.
From: Rich Lewis
Are elevator sump pits mandatory by some code of the elevator industry? I have a condition in expansive soil with a fully suspended floor system. It would be easier to build an elevator pit on void forms without a sump pit. The architect said he thought it was required by the elevator industry. Does anybody have a reference where this would be required? Neither he, nor I, have any elevator specific codes. I would hate to detail it without a sump pit and then flunk final inspection.
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