Glass Calculation - Laminated: 3 lites Fully Tempered, 2 layers PVB
Glass Calculation - Laminated: 3 lites Fully Tempered, 2 layers PVB
(OP)
Hey,
I was going to post this in the glass section of the site, but it looks like no one's been there since 06/2016, so here i am.
Anyone have any experience with design Tempered Laminated Glass that is 3 lites thick with 2 layers of PVB in-between?
E1300 Section 6.2.5 has it for singly glazed LG, but my situation seems a little different. Do i just distribute the load?
Thanks in advance.
I was going to post this in the glass section of the site, but it looks like no one's been there since 06/2016, so here i am.
Anyone have any experience with design Tempered Laminated Glass that is 3 lites thick with 2 layers of PVB in-between?
E1300 Section 6.2.5 has it for singly glazed LG, but my situation seems a little different. Do i just distribute the load?
Thanks in advance.






RE: Glass Calculation - Laminated: 3 lites Fully Tempered, 2 layers PVB
What is the intended use of the panel? Three laminated is unusual so I'm guessing it's something like floor. Depending on the use, it may be wise to consider one or more layers to be sacrificial or non-participating for reasons of redundancy, fire performance, etc.
Hopefully member NorthCivil shows up on this one. I know that he has extensive experience in this area.
I like to debate structural engineering theory -- a lot. If I challenge you on something, know that I'm doing so because I respect your opinion enough to either change it or adopt it.
RE: Glass Calculation - Laminated: 3 lites Fully Tempered, 2 layers PVB
Yes, its for a Canopy , and it seems like its overkill. 1/4"FT-1/8"PVB-1/4"FT-1/8"PVB-1/2"FT
I've seen NorthCivil posts in the Glass section so i concur that i hope he chimes in.
Also, what happens when the glass inst supported continuously along all 4 edges, but rather at the 4 corners, with the 4 way arm mounts. Anything special to consider there?
RE: Glass Calculation - Laminated: 3 lites Fully Tempered, 2 layers PVB
I like to debate structural engineering theory -- a lot. If I challenge you on something, know that I'm doing so because I respect your opinion enough to either change it or adopt it.
RE: Glass Calculation - Laminated: 3 lites Fully Tempered, 2 layers PVB
RE: Glass Calculation - Laminated: 3 lites Fully Tempered, 2 layers PVB
I like to debate structural engineering theory -- a lot. If I challenge you on something, know that I'm doing so because I respect your opinion enough to either change it or adopt it.
RE: Glass Calculation - Laminated: 3 lites Fully Tempered, 2 layers PVB
are you using a FEA Model to do the stress calculation ?
As KootK said...you can treat it as 3 single lites ... load share according to the stiffness of each lite
it is a pretty thick glass ( 1 inch in total )... so I guess the deformation might govern the design
best regards
Klaus
RE: Glass Calculation - Laminated: 3 lites Fully Tempered, 2 layers PVB
I agree that deflection is going to control as well, i just want to know the correct way of going about this.
RE: Glass Calculation - Laminated: 3 lites Fully Tempered, 2 layers PVB
The USA codes and regulations do not give any decent values because the glass 'codes' are not made for FEA Calculation
best regards
Klaus