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- To: <seaint(--nospam--at)seaint.org>
- Subject: railing design
- From: "Roger Davis" <rdavis(--nospam--at)sdsarch.com>
- Date: Tue, 16 Feb 1999 07:18:06 -0600
At 11:38 AM 2/15/99 -0600, you wrote: >i have a handrail that has 1/2" X 1/2" verticals at 4" o.c. with a >nominal flat stock top horizontal. in applying the code required 200 # >horizontal load what effective width is allowed. another words how many >verticals can contribute? > >another question is, what is the codefied deflection criteria? ASTM E985 says that maximum allowable deflection is as follows: For horizontal load at mid-span: Max. Defl. = h/24 + L/96 For horizontal load at top of post: Max. Defl. = h/12 For vertical load at mid-span: Max. Defl. = L/96 L = horizontal span between posts in inches, and h = vertical span of post in inches. Roger C. Davis Architect SDS Architects, Inc.
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