I suspect that modern buildings are designed “close to the limit” with very little safety margin.
About 20 years ago I understand that some large span agricultural use ones collapsed under the “allowed for” snow loading and it was ascertained that it was due to the bolt holes being punched out, so it became a requirement for the holes to be drilled.
Not sure if it is still a requirement………………………………………………
As to the OP, good luck in getting a committed answer from the supplier…………………
I suspect that modern buildings are designed “close to the limit” with very little safety margin.
About 20 years ago I understand that some large span agricultural use ones collapsed under the “allowed for” snow loading and it was ascertained that it was due to the bolt holes being punched out, so it became a requirement for the holes to be drilled.
Not sure if it is still a requirement………………………………………………
As to the OP, good luck in getting a committed answer from the supplier…………………
