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Lift span

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Lift span last won the day on May 28 2022

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  1. Lift span
    You may well be right! I'm a chartered engineer myself so I'm generally happy with the numbers and I've had mixed success with structural engineers in the past. With a timber build I'm happy all the information is out there eg. The TDCA Code of Practice - Raised timber decks is pretty comprehensive. Yes, no timber is the ground thanks! It's just the alternatives I'm looking at. No doubt I'll just end up with 150mm timber posts (probably oak) on steel brackets in concrete with a standard timber frame above with lots of cross bracing. I will ask my local SE though to see what they say. Different view points are always appreciated though!
  2. Lift span
    How did you attach your balustrade? Seems that there are lots of ways to do it and some are a bit dodgy for raised decks. I'm after this style of rail below but not sure if it's acceptable just to screw down into the frame at the bottom of those posts. The second half of this video shows some common issues:
  3. Lift span
    I'm going round in circles with this! I've contacted two manufacturers of plastic posts. One says you can't use their posts in raised decks over 1m and the other says you can with diagonal bracing. I just don't see any evidence of anybody using it which puts me right off. The other issue that had come up is the balustrade. A manufacturer advised it may be better to fix into steel at that height. So, I've started looking at steel frames as you say Crispy. This is all turning into a massive time waster! I can see why the pros just concrete timber in the ground and let the home owner worry about it in a few years!
  4. Lift span
    As far as post size the guide says this:
  5. Lift span
    I found a guide from the USA which gives the 7ft rule for footings on a slope.
  6. Lift span
    The underneath is going to be open like below with a weed barrier and gravel directly under the deck. Yes, the maintenance of the wood is a concern. I’ve just seen you can get 100mm square plastic posts so maybe they are the answer after all! That way I’d be able to dig footings to be level with the lower level of ground and simply concrete those posts in therefore eliminating any issues with the slope.
  7. Lift span
    Here are some photos just to give some perspective. Vertical supporting posts would be around left hand side of that scaffolding.
  8. Lift span
    That’s a good idea. Something I’d not considered. Maybe some kind of hybrid where it’s self supporting but with a ledger that’s “weakly” connected just get the level threshold.
  9. Lift span
    The more I look at this the more I like it! What’s the maximum height of those columns in your deck? Thanks.
  10. Lift span
    Building Control have signed off the plan already. They were only interested in the Balustrade height. Doesn’t need planning permission. Lots of other work did but when the planning officer visited he confirmed that the 30cm rule was from the ground adjacent to the start of the deck. Even with a structural engineer I’ve found in the past the conversation starts with “How do you want to do it” So I’m just looking at options so thanks for all your ideas!
  11. Lift span
    I did wonder about a steel option. At 1.5 m high I’d be looking at a beam rather than a plate though. Again, just looking for best practice.
  12. Lift span
    I’ve no doubt it’s a good job! I’d be interested in any photos! I would like to find some info that would have these as part of an official spec. The Timber Decking and Cladding Association https://www.tdca.org.uk say 140mm posts. If I could find a spec for 100mm I’d do that as they are obviously much easier to come by.
  13. Lift span
    I was looking for some cardboard tubes here in the UK and they seem remarkably expensive for what they are. I have some plastic barrels though which I thought by cutting the top and bottom off I could achieve similar.
  14. Lift span
    Wow! That’s a great find thanks. Will definitely explore that option. I didn’t realise you could DIY them.
  15. Lift span
    That’s a good idea. I had a very quick look at oak and also laminate posts. Also even just bolting 150x47mm timbers together. I’m just looking for best practice really. How much are ground screws? I presume these have to be done professionally so it would go against my strict (mostly) DIY policy!
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