Guastavino
Structural
- Jan 29, 2014
- 381
This issue comes up all the time for me and how it came about is one of the eternal mysteries of the universe in my mind. I always tell folks they can't use 1-1/4" STD pipe guardrail because of the 200# concentrated force at 42" makes it such that it just doesn't work in bending. Then, I get the "well it's the way we've always done it". Code officials never seem to catch it, but it doesn't work unless you start to count on a FE model that spreads the load between posts, etc. And then it's still questionable at best IMO.
Then, I see arch's spec 1.50" O.D. handrail/guardrail, which of course doesn't exist in the Pipe shape realm. So I'm curious, A) how people justify using 1-1/4" (1.66 O.D.) std pipe guardrail, and B) what do you all tell clients if you're on the same side as me, that it has to be 1-1/2" STD Pipe (1.90" o.d.)
Thanks!
Then, I see arch's spec 1.50" O.D. handrail/guardrail, which of course doesn't exist in the Pipe shape realm. So I'm curious, A) how people justify using 1-1/4" (1.66 O.D.) std pipe guardrail, and B) what do you all tell clients if you're on the same side as me, that it has to be 1-1/2" STD Pipe (1.90" o.d.)
Thanks!