From: "Mark D. Baker" <shake4bake(--nospam--at)earthlink.net>
Date: Tue, 25 May 1999 09:51:58 -0700
> We are making a flag pole( height =10 m ).
> But, have no idea about the allowable maximum deflection
> in the extream case.
> L/200 or L/100 ?
AASHTO specification for structural supports for highway signs,
luminaires and traffic signals recommends the following:
2.5% of structure height for horizontal linear displacement.
maximum angular rotation at top relative to base of 1 degree, 40 minutes
(slope of .009m in .305m)