On Wed, 22 Jun 2005 22:27:49 -0500, Hitch wrote:
"bob smith" wrote in :

I want to install two posts to hang a hammock. For aesthetic reasons I
dont want to camber them away from one another as typically
suggested. What size steel tube would I need such that deflection is
basically non-existant with a typical 1-person weight on the hammock?
(lets say 200 lbs) The posts would be 6' above ground, 4' below
ground. The hammock would hang from the top of the posts.

I was thinking 3" diameter but I'm not sure if the minimum sidewall
(1/8") would be acceptable or if I should go thicker.
What size would be equivalent to a 6x6 wood post for this application?
(ie. primarily bending strength)

Our company designs shoring for excavations. Based on typical cantilever
shoring designs I'd say you need W21x122 grade 50 steel beams, 18'
embedment, centered in 30'' dia drillholes filled with structural concrete.
That should take care of any pesky deflection in the beams.

That sounds like the perfect design for hammock supports - if the
hammock is for your pet elephant... ;-P

Nothing Succeeds like Excess.

-- Bruce --
--
Bruce L. Bergman, Woodland Hills (Los Angeles) CA - Desktop
Electrician for Westend Electric - CA726700
5737 Kanan Rd. #359, Agoura CA 91301 (818) 889-9545
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