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RE: questions about ASTM E1300-04

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I would recommend that you use the SDG Window Glass Design 2004 program. This allows all kinds of support conditions and glass types and will calculate deflections. You might want to ask them if it supports the glass you are working with.

 

Christopher Banbury, PE

President

Ark Engineering, Incorporated

PO Box 10129, Brooksville, FL 34603-0129

22 North Broad ST, Brooksville, FL 34601

352.754.2424 (o)

352.754.2412 (f)

cbanbury(--nospam--at)arkengineering.net

www.arkengineering.net

 

From: David Topete [mailto:davetopete(--nospam--at)yahoo.com]
Sent: Monday, December 05, 2005 4:36 PM
To: seaint(--nospam--at)seaint.org
Subject: Re: questions about ASTM E1300-04

 

I know this is off-topic, but is the architect dictating such a large piece of glass?  4' x 12' ???  Encourage them to add a mullion, or something...  Sorry I can't provide anything wrt your query...
DT

"Mueller, John" <jmueller(--nospam--at)pcf-p.com> wrote:

Dear list members:

 

I’m using ASTM E 1300-04 “Standard Practice for Determining Load Resistance of Glass in Buildings”.

I am calculating the deflection for laminated glass – two sheets of 6mm glass with a 1.52 PVB interlayer.

The window daylight opening is roughly 1230mm by 3700mm, and I’m calculating for a design load of 5.3 kPa.

 

My question is this:

Appendix X1, para X1.1.1 reads “This procedure can be used for laminated glass under short-term loads using the laminated glass thickness designation.”

Following paragraph 3.2.3.2 (thickness designation for laminated glass) I get a minimum thickness for my glass as 11.91mm... And using these numbers with the method in X1 I get results that are identical to the typical method with single sheet glass – not laminated glass!

 

I assume that I misunderstand X1.1.1, the “laminated glass thickness designation”.

Anybody familiar with this who knows where I’m making a mistake?

 

Thanks a million,

John.

 

 

 

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