Sizing gate post

[capww8]

I am quickly finding myself breaching the edge of my experience / knowledge.

My project for next weekend is to build and set an 11' wide, 5' tall driveway gate.

I have been able to determine (I think) that the gate will weigh approximately 250 lbs. To do this, I found a references to 11ga steel weight at 5 lbs / ft2, and cedar at 33 lbs / ft3, and then worked volumes out of my dimensioned sketch.

At this point, I feel like I should be able to determine the appropriate sizing of the post and footing, but my confidence just isn't there. Any chance y'all could give me a hand?

 

[Cjk]

http://www.alafarmnews.com/index.php?option=com_content&view=article&id=423:get-on-that-gate-for-a-solid-pasture-entrance&catid=65:september-2007

Here is how I did mine. An H brace on both sides with a 10' gate on each 6" post, chained in the middle. Been up for a few years and hasnt sagged at all.

 

[JakeKohl]

I used 4" schedule 40 pipe for my posts...the fence is constructed from 1.5" 16 gauge square tubing. Each side measures 7.5' by 6'. I filled the schedule 40 pipe with concrete for good measure. They've been up for two years now and have been great.

(hadn't yet finished the last couple of pickets in the curved section in this photo)


DSC_2616 by -Green Room Graphics-