Jump to content

Glass balusters on stairs


Recommended Posts

My $0.02 ...

1) Is it tempered glass?

2) Is spacing between balusters 4" or less?

2) They are simply ugly!!

3)What lateral force can it withstand?

If it wasn't site built, I'd be looking over the assembly for the ASTM number for the standard test method for glass railing systems.

Link to post
Share on other sites

As I recall the code says guard must "resist" 200 lb applied laterally...question is what does "resist" mean?

I think that the generally accepted interpretation is that "resist" means "it doesn't break or become permanently deformed." However, if you're going to set up a test of such a rail, the test for most materials should use a safety factor of 2.5.

Since a portion of the assembly in this case is glass, the safety factor would have to be increased to 4.

So, effectively, the rail would have to resist a lateral load of 800# without breaking or permanently deforming.

Link to post
Share on other sites

As I recall the code says guard must "resist" 200 lb applied laterally...question is what does "resist" mean?

I think that the generally accepted interpretation is that "resist" means "it doesn't break or become permanently deformed." However, if you're going to set up a test of such a rail, the test for most materials should use a safety factor of 2.5.

Since a portion of the assembly in this case is glass, the safety factor would have to be increased to 4.

So, effectively, the rail would have to resist a lateral load of 800# without breaking or permanently deforming.

I suspect that only a few, if any, currently installed residential rail assemblies would resist a 500 pound lateral load applied under laboratory test conditions.

Link to post
Share on other sites

A glass guard rail assembly has to pass a few tests per the ASTM standard, including supporting 334 pounds for 60 seconds. That's why the site-fabricated assembly would not be acceptable.

I found no markings whatsoever on the rails. My money is on homemade.

Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

×
×
  • Create New...