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Re: Pull down stair

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If you believe the manufacturer, they usually limit the load on such stairs to 200#, and the stairs themselves weigh about 80# (depending on the height).  I can say, with confidence, that mine does not have much additional capacity beyond that 200#, having broken through 3 treads in a row while carrying a 20# package along with my standard 200#. If it were me, I'd figure 400# of live load at the center and call it a day.

Ramesh Savaliya wrote:
 I want to design a beam to support the pull down stair for attic access. Does any know about loading and/or any code provision?
Thank you in advance.
Ramesh Savaliya, P.Eng.

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