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Support for hammock
A friend wants to use a tree in her garden (about 7 diameter) and an existing 4*4 fencepost to support her hammock. I think the tree will be okay but I have grave doubts about the wisdom of using the fence post. Now the angle of pull will be at about 45 degrees to the fence so its not going to pull it straight over but my gut feeling is that this isnt a good idea. What would be adequate dimensions for a post to support one end of a hammock. My friend doesnt weigh much but I think it ought to be over specced to cope with occasional abuse by offspring. Tim -- Please don't feed the trolls |
Support for hammock
Tim+ Wrote in message:
A friend wants to use a tree in her garden (about 7? diameter) and an existing 4?*4? fencepost to support her hammock. I think the tree will be okay but I have grave doubts about the wisdom of using the fence post. Now the angle of pull will be at about 45 degrees to the fence so it?s not going to pull it straight over but my gut feeling is that this isn?t a good idea. What would be ?adequate? dimensions for a post to support one end of a hammock. My friend doesn?t weigh much but I think it ought to be over specced to cope with occasional abuse by offspring. Tim I reckon it will more be questions of the condition of & how well anchored is the post? I doubt a person or two in a hammock so attached will snap a good condition 4x4 fencepost, but start it leaning /uproot because of barely adequate foundations? - yes highly likely imho. -- Jim K ----Android NewsGroup Reader---- http://usenet.sinaapp.com/ |
Support for hammock
On 22 Apr 2019 17:01:41 GMT
Tim+ wrote: A friend wants to use a tree in her garden (about 7 diameter) and an existing 4*4 fencepost to support her hammock. I think the tree will be okay but I have grave doubts about the wisdom of using the fence post. Now the angle of pull will be at about 45 degrees to the fence so its not going to pull it straight over but my gut feeling is that this isnt a good idea. What would be adequate dimensions for a post to support one end of a hammock. My friend doesnt weigh much but I think it ought to be over specced to cope with occasional abuse by offspring. I'd be more inclined to put a rope around the bottom of the fence post and interpose an A-frame (I use a couple of stout branches roped together) to provide the lift. This works with bits of hedge that provide a secure anchor at ground level but would never manage support at hammock height. Or you could add a diagonal brace to the fence post. Having said that I've just ordered a hammock with a tubular steel stand as a more flexible option - much easier to place it wherever you want without having to find tie-down points. |
Support for hammock
Rob Morley wrote:
On 22 Apr 2019 17:01:41 GMT Tim+ wrote: A friend wants to use a tree in her garden (about 7 diameter) and an existing 4*4 fencepost to support her hammock. I think the tree will be okay but I have grave doubts about the wisdom of using the fence post. Now the angle of pull will be at about 45 degrees to the fence so its not going to pull it straight over but my gut feeling is that this isnt a good idea. What would be adequate dimensions for a post to support one end of a hammock. My friend doesnt weigh much but I think it ought to be over specced to cope with occasional abuse by offspring. I'd be more inclined to put a rope around the bottom of the fence post and interpose an A-frame (I use a couple of stout branches roped together) to provide the lift. Thats a good idea. Ta. This works with bits of hedge that provide a secure anchor at ground level but would never manage support at hammock height. Or you could add a diagonal brace to the fence post. Not possible without ruining the look of the new fence. Having said that I've just ordered a hammock with a tubular steel stand as a more flexible option - much easier to place it wherever you want without having to find tie-down points. But then you either have to store or look at a slowly rusting frame all the time. ;-) Tim -- Please don't feed the trolls |
Support for hammock
On 22/04/2019 18:01, Tim+ wrote:
A friend wants to use a tree in her garden (about 7 diameter) and an existing 4*4 fencepost to support her hammock. I think the tree will be okay but I have grave doubts about the wisdom of using the fence post. Now the angle of pull will be at about 45 degrees to the fence so its not going to pull it straight over but my gut feeling is that this isnt a good idea. What would be adequate dimensions for a post to support one end of a hammock. My friend doesnt weigh much but I think it ought to be over specced to cope with occasional abuse by offspring. Tim For wire fencing, you would normally take a diagonal brace down to the ground on the tension side. If not, a lot will depend on the ground, and how deep the post goes. In general the problem with tension applied to an unbraced post is that the bending moment at ground level adds tensile stresses to one side, and this is where rot will attack preferrentially. My horse paddock has a "wavy" boundary along a stream, so that quite a few posts have a net force perpendicular to the fence line, and it is noticeable that these do not last so long. Also, in one long-ish snowy winter I attached haynets to half a dozen posts (also applying a similar bending moment). I had to replace them all in the next year or two. |
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