RE: Seismic response of hydraulic oil tank

From: <Steve>
Date: Tue Oct 04 2005 - 00:47:00 EDT

Hi John

Yes the accelerations are a little on the high side. I suspect, as Chris indicates, that there has been some "to be sure, to be sure" going on, because most likely the application will be critical service.
However in this instance I can see no harm in overdesign, and it may cost less overall than talking the client around to a rational design basis.

Cheers

Steve

-----Original Message-----
From: PipingDesign@yahoogroups.com [mailto:PipingDesign@yahoogroups.com] On Behalf Of John Luf
Sent: Tuesday, October 04, 2005 2:45 PM
To: PipingDesign@yahoogroups.com
Subject: Re: [PipingDesign] Seismic response of hydraulic oil tank

Is it possible that you meant 0.10G & 0.50G? Iv'e designed plant piping all over the globe and have never been handed a ground acceleartion of this magnitude...

If this is the correct ground level accelartion please advise where it is because I want to make sure I never visit the area.

• Steve McKenzie <Mechproj@xtra.co.nz> wrote:

> The nominated ground acceleration is 10g if the
> natural frequency is
> within 0.15-0.2 seconds; otherwise 5g. Maximum
> ground displacement is
> given as 60mm, all directions.

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