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RE: Steel Pan Stairs
- To: <seaint(--nospam--at)seaint.org>
- Subject: RE: Steel Pan Stairs
- From: "Lowen, Dave" <Dave.Lowen(--nospam--at)amkc.ca>
- Date: Tue, 4 Mar 2003 08:05:43 -0330
NAAMM stair design manual should steer you in the right
Does anyone have any insight on steel pan stair
design. I have trouble with an analytical design for such a structure. For
instance an 1 1/4" diameter post supporting a handrail/guardrail with the
prescribed load of 100plf vert. and 50plf lateral at 36" centers can have a
cantilevered load of somewhere between 150lbs to 260lbs at a height of 42" (at
the landing). This will cause a load well in excess of the strength of the
pipe. Then there's the question of how you resolve the weak axis bending in
the stringer. It seems to me that from most stair systems I've seen that there
more empirically designed than analytically design.
Any input would greatly be