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cold warping of glass 1
- Thread starter 0465526
- Start date
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?
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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.
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.
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 ??
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 ??
paddingtongreen
Structural
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.
Michael.
Timing has a lot to do with the outcome of a rain dance.
MiketheEngineer
Structural
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!!!
Doubt you have 500 years to wait!!!
paddingtongreen
Structural
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.
Michael.
Timing has a lot to do with the outcome of a rain dance.
MiketheEngineer
Structural
OK - 200 years - long time to wait!!!
Compositepro
Chemical
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.
paddingtongreen
Structural
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.
Michael.
Timing has a lot to do with the outcome of a rain dance.
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