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Re: Arena Guardrail Deflections

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That deflection works out to be about L/149. We typically design for L/180. As for the top rail, how far are the posts apart? Under the IBC, you would need to check the top rail for a 200# load in any direction. Is there something similar in Canada? If so, the 1"x2" rail may require closer spacing of the posts due to weak axis bending.

Thor Tandy wrote:

I’m checking a guard rail in an assembly/egress location. The section proposed gives a total deflection of post + top rail of about 14mm (9/16”) of the post hgt of 1070mm (42”).

For an assembly area this still seems a bit high.

Also my client is proposing a top rail 1”x2” tube …

What do you think?


Thor A. Tandy P.Eng, C.Eng, Struct.Eng, MIStructE
Victoria, BC

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