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Re: Modeling a Load on a Floating Barge

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Mathew,
Thanks for the reminder. I once worked in a fab shop that built a 30" diam spud for a barge(derrick) which subsequently cracked at a weld and partially failed-the spud not the barge. My job is a barge that has to be moved along a wall in the Niagara River to pour a new wall. The tower is really part of a concrete pump but it almost looks like a crane. I assumed that they will want to move along the existing wall so the spuds may not be necessary, but I will inquire about it. However I believe that the spuds only hold the barge in position and it is free to move up and down on them--- go with the flow, ride the tide?
Gary

Stuart, Matthew wrote:
Normally, a crane would only be placed on top of what is known as a spud
barge. A floating barge that has piles that can be dropped down to the
mudline similar to outriggers on a truck crane.
D. Matthew Stuart, P.E., S.E., F.ASCE, SECB
Senior Project Manager
Structural Department
Associate
Schoor DePalma Engineers and Consultants
200 State Highway Nine
Manalapan, NJ 07726
732-577-9000 (Ext. 1283)
908-309-8657 (Cell)
732-298-9441 (Fax)
mstuart(--nospam--at)schoordepalma.com


-----Original Message-----
From: Gary L. Hodgson and Assoc. [mailto:ghodgson(--nospam--at)bellnet.ca] Sent: Thursday, October 19, 2006 4:18 PM
To: SEAINT Mail List
Subject: Modelling a Load on a Floating Barge

List,

I have a job to design supports for a small crane tower on a barge.  The

total load is approximately 48 kips and my problem is to place beams across the barge to support the tower. There are internal stiffeners in

the barge at 24" centres so any beam will be essentially sitting on an elastic foundation.

However I don't know what spring constant (stiffness) to use for the barge sitting in the water. Can anybody offer me some enlightenment?

Gary

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