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Re: Flat Bottom Tank Anchorage

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Mohammed Shahebuddin,

What is the "DEP shell drawing 51.046" that you mentioned?  Do you know
where I might be able to get a copy?

Thanks,

Ken


Kenneth S. Peoples, P. E.
Lehigh Valley Technical Associates
1584 Weaversville Road
Northampton, PA 18067-9039
Phone: (610) 262-6345
Fax: (610) 262-8188
e-mail: kpeoples(--nospam--at)lvta.net



----- Original Message -----
From: "Mohammed Shahebuddin" <shaheebm(--nospam--at)npcc.co.ae>
To: <seaint(--nospam--at)seaint.org>
Sent: Thursday, October 18, 2001 1:38 AM
Subject: RE: Flat Bottom Tank Anchorage


> YI
>
> further,
> * Tank bracket anchor bolts holes are slotted ( to allow radial
> expansion due to fluid, alteration of levels while filling/empty). hence
you
> can ignore lateral forces internal.
> * you need to design for wind forces & Seismic if applicable. Design
> the bolts for tension force.
> * Minimum spacing of bolts as per API- 10' (3 m) c/c radial.
>
> and more DEP shell drawing 51.046, will give you selection of no bolts
> required for windspeed 160 km/hour with respect to dia of tank and height
of
> tank.
>
> SHAHEEBUDDIN. MD
> LEAD CIVIL/STRUCTURAL ENGG.
> NPCC ENGINEERING PLC
> PO 2058
> ABU DHABI, UAE
> EMAIL:shaheebm(--nospam--at)npcc.co.ae
> FAX:+9712-5549111
> TEL:+9712-5022104
>
> > -----Original Message-----
> > From: bob.ross(--nospam--at)wgint.com [SMTP:bob.ross(--nospam--at)wgint.com]
> > Sent: Thursday, October 18, 2001 5:43 AM
> > To: seaint(--nospam--at)seaint.org
> > Subject: Re: Flat Bottom Tank Anchorage
> >
> > Is your design an API or AWWA tank?
> >    Is it a tank supplying a supply during an emergency?
> >    In what Seismic Zone is the tank?
> >    Where is the tank location and distance in relation to the nearest
> > known active fault(s)?
> >    When anchor shear bolts are provided, (which do damage during an
> > event), each should be assigned an equal share in resisting the seismic
> > lateral and vertical loads.
> >
> > Pax e Gratia
> > Bob Ross
> > Robert P. Ross, P.E.
> > Principal Project Manager
> > Washington Group International,Inc.
> > Industrial Processes
> > 17320 Red Hill, Suite 300
> > Irvine, Ca. 92614
> > Mobile 562-254-4604
> > Office 949-222-3978
> > FAX 949-222-3985
> > E-mail: Bob.Ross(--nospam--at)WGINT.com
> >
> > ----- Original Message -----
> > From: YI <YI(--nospam--at)summit-sr.com>
> > Date: Wednesday, October 17, 2001 6:05 pm
> > Subject: Flat Bottom Tank Anchorage
> >
> > > I have question regarding the design the anchor bolts for a
> > > circular tank
> > > with bottom fully supported on concrete pad.
> > > When a lateral load is applied to the tank, assume no fiction
> > > between the
> > > tank and the pad, the lateral load is resist by the shear capacity
> > > of the
> > > anchor bolts.  The maximum shear force per anchor bolt is occured
> > > on the
> > > bolt located 90 degres from the direction of applied load, and
> > > minium  shear
> > > on anchor bolts occure on the bolts that are in line with the applied
> > > lateral load.  Consider the situation where there are only 4
> > > anchor bolts on
> > > the ring of the tank base, will there be any shear force at all on the
> > > anchor bolts located in line with the direction of the applied lateral
> > > force?  Are all the lateral force resisted by the 2 anchor bolts
> > > located 90
> > > degrees each side of the load direction?
> > >
> > > Thanks in advance.
> > >
> > > Yi Yang
> > >
> > >
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