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Pole diameter help needed please?
Hope someone can advise, we are about to manufacture the sign detailed below and are unsure about the correct diameter posts to use, whatever we use will be aluminium – sign is double sided fitted with back to back clips.
Thanks, G
Can’t post my pic. Sign is:
Overall size approx 3000x2000mm made up of:
Header 2050x900mm
Ladders 8 @ 2050x250mmx2 of everything to be fitted back to back and made from composite aluminium – each ladder c/w 2 rails – 3no on header.
Thanks[/img]
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11 Replies
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Gavin, Post dia is going to depend on how far above ground level the sign is going to be positioned, the higher above ground level the bottom of the sign then the larger the poles.
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Sorry Martin,
sign is about 3m high and the bottom sign will be approx 610 to 915 of the ground.
G
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off the top of me head overkill 3 x 5m x 120mm alley tube with caps 1m ish in deck and is it flat sheet or pan id prob clip and rail it hope this helps done a few look great pan looks better thou
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Thanks for the help, it’s going to be flat signs. We can only use 2 posts as the style of the sign will not work otherwise.
Thanks for the pm Martin, sorry I can’t reply!
G
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We made a large multi-paneled sign for a retail park using sp****x aluminum posts which were 175mm diameter, the overall size of sign panels was about 2.5m x 4.5m. After the sign was fitted we decided there was far too much wipe in the sign posts, so decided to come back the following week with steel strengtheners.
That weekend the winds from hell came and the aluminum posts just buckled under the force, and the signs was bent over flat to the ground! 😳
In future if we choose to use aluminum posts for aesthetic reasons, we shall consider internally strengthening the posts with steel. 😀
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Where are you sourcing the panels from Gavin? If you try Ashby trade signs they will also provide a recommendation for the post dia. which takes into account wind loading.
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Hi Phill, the panels are all dibond with rails on the back, were making them up ourselves, not folded or anything just flat panels. I think were going to phone ashby for advise, was trying to avoid though as it’s a bit cheeky!
A similar sized sign we did before was 140mm posts, it was solid though not ladders and in a more exposed place, was hoping that 114 would do this as if they get to big it’s going to effect the look of the sign.
G
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Gavin, I thought as a Gold member you could PM. Hope it helped a bit but I have to be honest and say I didn’t read your post properly in the first place anyway. Didn’t realise you wanted to use ally posts, you won’t be able to see much of the posts anyway with a double sided sign with so little at the base so why not use steel posts which would be stronger to start with and probably a lot cheaper.
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I’ve just checked back the size I used for a large sign recently. This was 2.4M x 1.5m (half the surface area) and the recommended post dia. for this was 112mm – so I would guess you need something bigger?
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Hmm, looks like they will need to be beasts then!
We always keep a stock of posts and always ally, our supplier doesn’t do steel. I’ve always been under the impression that the wall thickness is greater in ally posts meaning not much difference to steel and as they will not corrode this makes them a better option. The local council now uses all ally posts as well and it keeps everything looking the same.
Will need to check though as it’s going to be a pain to fit so it needs to be right!!!
G
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size for size, steel posts are much stronger than aluminium posts, with
a square or rectangular cross section being stronger than a round cross section.🙂
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