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cold warping of glass

cold warping of glass

cold warping of glass

(OP)

Cold warping of glass has been a trend in building envelope design and it interests me to do a research on this. Any good references, standards, codes, etc. you can recommend? Aside from the effect on glass, sealant design is also of concern. Thanks!

 

RE: cold warping of glass

Call the mfg??

RE: cold warping of glass

if it interests you, do your own research ... which isn't IMHO posting here.

this site could be properly used to get opinions on references ... "is XYZ a good reference ?", "i've read different things about ABC ..."

RE: cold warping of glass

The last time I tried cold warping glass, it ended up in shards on the floor.  The only reference and experience I have says glass doesn't bend very well when cold.  As part of your research project why don't you waste a minute or two in your busy day and tell us what 'cold warping of glass' is all about, why is it a trend, and what you are really trying to do?

RE: cold warping of glass

Yuck!

RE: cold warping of glass

SnTMan:
Thanks much for the info., you would think this was your research project.  Talk about an expensive and complicated project, all to salve an architect's over inflated and bent out of shape ego.  All the article talks about is that the almost impossible can be done, if a client is willing to throw enough time and money at it.  With today's computers and software that geometry and analysis can certainly be handled, but at what cost per sq.ft.?  Not one conc. form could likely be reused, no two (or damn few) pieces of anything were a repeat, including rebars in a given column.  There probably were some .75" bolts of the same length on the job.  They could have had twice as much usable bldg. space, and a good looking bldg. too, if they had hired and architect and structural engineer instead of someone who fancies himself and artist/sculptor.  I grant that glass will flex as they have made it do in its aluminum frames, and I take my hat off to the glass fabricator for their study and analysis on the matter.  But, it will be interesting to see how those glass panels start popping out under significant lateral loads or after 15 years of environmental degradation, given that they are starting out with all their elastic flexibility used up for arts sake.

Talk about a waste of everyone's time and resources.  I'll bet those turkeys tried for a Platinum LEED rating too, all that fly ash and hot air used up in one bldg..  And, only one man's opinion, but the bldg. isn't particularly attractive either, just very complex and difficult for complexity's sake.  Wait until they start furnishing that place, all of the furniture and fixtures will have to be specially made to fit the curved and sloping walls.  But, it's a Frank Gehry building.  We have one in our town, all you have to say is 'the crushed pop can' and people know just what you're talking about.
 

RE: cold warping of glass

Thanks, dhengr.  Exactly what I meant, but you have explained it much better.

RE: cold warping of glass

dhengr, you're welcome, a quick Google of the subject. Not enough to find that I would call it a "trend".

Structural is certainly not my area of expertise (if any), but I tend to agree w/ hokie66's 17:30 post:)

Regards,

Mike

RE: cold warping of glass

Uhhh, if I was being snarky I would add, "Wow, glass is flexible, who knew?"

If I was...

RE: cold warping of glass

i guess too they're using the word "cold" like they did for "fusion" ie "cold forming" = "room termperature" forming ?

if they're "just" warping the glass panes, and so building in stresses, what are the creep characteristics of glass ? (as bad as it's tensile props ??

RE: cold warping of glass

Glass is, technically, a liquid according to some authorities. That doesn't help much does it?

Michael.
Timing has a lot to do with the outcome of a rain dance.

RE: cold warping of glass

If you look at the old (500 year++) cathedrals in Europe you will see that the glass has "flowed" and window panes are thicker at the bottom - easy to see.


Doubt you have 500 years to wait!!!

RE: cold warping of glass

I had a house here, built in the early 1800s and the remaining old glass was thicker at the bottom.

Michael.
Timing has a lot to do with the outcome of a rain dance.

RE: cold warping of glass

OK - 200 years - long time to wait!!!

RE: cold warping of glass

Window glass flowing over centuries is a myth. Old glass was very uneven in thickness to begin with as it was hand-blown. There can be some creep if stresses approach the yield strength.

RE: cold warping of glass

Think what you will, I measured mine when i re-set them for painting. There wasn't much difference but it was consistent. I wish I had taken notes but I just stuck the one ond in compound and checked the fit of the other end.

Michael.
Timing has a lot to do with the outcome of a rain dance.

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