Posts for a hammock...
 

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[Closed] Posts for a hammock (structure help)

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In anticipation of another gorgeous summer, I'm planning on sticking a couple of posts in the ground to hang a hammock between.

Two 4x4" posts dug in 3-3.5m apart. Will add concrete mix, and will also be using a round pole to act as a brace between the two posts at the top.

A bit like this:

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Question is, will 3m posts be long enough given that they have to stand at just over head height?

Is 2/3 above ground and 1/3 dug in adequate? (given that the horizontal pole should act to stop the posts from falling in)

Edit: Forgot to mention soil is clay rather than sandy.


 
Posted : 17/03/2013 8:41 pm
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Ok, the attempt at a diagram didn't quite work 🙂


 
Posted : 17/03/2013 8:42 pm
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wouldnt something like this nit be better?

[img] [/img]


 
Posted : 17/03/2013 8:43 pm
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It's going on an allotment hence using posts in which will have karabiner hooks for the hammock.

Above stand would be nice, but can't afford the footprint!


 
Posted : 17/03/2013 8:47 pm
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If you sink a 4x4 3m post 1 m into the ground in clay and concrete it in I can almost guarantee it won't move **** all.


 
Posted : 17/03/2013 9:06 pm
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Ditto

10ft post 3 ft under

Solid as a rock


 
Posted : 17/03/2013 9:08 pm
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Jolsa - I mad my own pair of these out of some ally bar lying around. Matched with some carabiners it makes adjusting the hammock for sag and pre-load a doddle!

http://www.ebay.co.uk/itm/320872909241
[img] [/img]


 
Posted : 17/03/2013 9:10 pm
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before you use concrete check your tenancy agreement first


 
Posted : 17/03/2013 9:11 pm
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you dont necessarily need to use concrete. well tamped back fill of small stone/gravel/sand will do the job.


 
Posted : 17/03/2013 9:13 pm
 joat
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At that depth, as long as the clay is dryish (i.e. you can't get all 'Ghost' with it) it will be strong enough, just back fill and tamp a little at a time.


 
Posted : 17/03/2013 9:22 pm
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Thanks all for the comments, good to hear.

Stoner, the Amazonas fixings are what I'll probably be getting (it's an Amazonas Barbados hammock). Either the Easy+ or Smartropes similar to the sort you've made.
http://www.amazonas.eu/en/accessories.html

Just need to figure out whether I need the flexibility of the Smartrope or whether the Easy+ onto the posts will do given the space I'm working in.

May reconsider the concrete use, possibly overkill given that I'm using a horizontal pole to counteract the posts being pulled inwards.


 
Posted : 17/03/2013 9:31 pm
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A small amount or type 1 ( hardcore ) tamped around the posts enough to fill the holes will stop any movement as stoner said. Make sure any backfill aggregate is angular.

ps. You can't successfully tamp/ compress wet soil or clay.


 
Posted : 18/03/2013 12:12 am
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You need damned strong posts, the leverage is mental.

I use posts but have guy lines off the back, going through a mental eye bolt thing at the top of the post and then attach the hammock with carabiners.

Or use a horizontal post as you say.


 
Posted : 18/03/2013 12:15 am