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Re: Crane Design[Subject Prev][Subject Next][Thread Prev][Thread Next]
- To: seaint(--nospam--at)seaint.org
- Subject: Re: Crane Design
- From: "Robert Rogers" <robert.rogers(--nospam--at)woolpert.com>
- Date: Thu, 18 Mar 99 07:21:14 EST
My two cents worth; I would have to disagree with the methodology proposed by Rick. There exists explicit criteria (mentioned in ASME NOG-1) which dictates when a bridge crane can be decoupled from its runway (based on the masses involved and the fundamental frequencies of the structure and crane). Just assuming that it is a non-structural component is not valid. The bridge crane can impact the seismic response of the runway and supporting structure. Robert Rogers PE Woolpert LLP robert.rogers(--nospam--at)woolpert.com ______________________________ Reply Separator _________________________________ Subject: Re: Crane Design Author: seaint(--nospam--at)seaint.org at Internet Date: 3/17/99 6:30 PM Harold: I would consider an overhead bridge cranes supported by a building structure as an example of manufacturing and process machinery, covered by Chapter 6 (Nonstructural components) of the 1997 NEHRP Provisions, and therefore the 2000 IBC. Grade-mounted (gantry) cranes should be covered by Chapter 14 (Nonbuilding Structures) of the 1997 NEHRP Provisions. Rick Drake, SE Fluor Daniel, Inc.
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