GSA Courthouse Management Group
Mechanical Lift Analysis
(3) Integral adjacent/concealed equipment
Hydraulic/scissors units
none
Cantilevered platform units
Drive mechanism in recessed tower*
*The cantilevered platform drive mechanism can be designed for front or rear service access.
Requirements for Regional Service and Parts
The project specifications and related general conditions should state that the lift system
supplier be required to contract for service, for at least a 10 year period. Further, the
contract should be with a proven reputable and experienced company that has system
parts on hand, within a 500-mile radius of the installation site.
Warrantees
The project specifications should include a minimum requirement of a 10-year warrantee
on all parts and operating controls.
System Cycling Requirement
The manufacturer of the lift system provided at a majority of the installations investigated
in this Analysis T.L. Shields, requests that each lift unit be cycled through its operation
sequence at least once a month to retain the hydraulic pressure while the platform is at a
normal elevated position. Since the lift is rarely used, it does appear to be unrealistic to
expect building maintenance to cycle through the operation sequence and test for leaks
every month. The retention of the platform at an elevated position must be accomplished
by means other than hydraulic fluid pressure.
Section 3-11
HDR Architecture, Inc.
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