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    Hi, we use AutoCAD mainly 2D too but just bought...

    Hi, we use AutoCAD mainly 2D too but just bought Revit and Robot from Autodesk as part of their AEC suite (you can swap old licences and get a good deal). You can export designs straight into Robot...
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    Hi Jason, The formula used is detailed on page...

    Hi Jason,

    The formula used is detailed on page 120 of the TG20:13 design guide and comes from Eurocode 3, it is more complex (and conservative) than Euler and gives very similar values to the old...
  3. You need to ensure that the boards, transoms and...

    You need to ensure that the boards, transoms and ledgers can support the concentrated load given in table 3 of BS EN 12811-1 although for standard scaffolds this is rarely a major factor. If you know...
  4. Hi OB, as Alan says it is far simpler to just...

    Hi OB, as Alan says it is far simpler to just apply the same UDL on all main boards between the standards (you couldn't control where the scaffold is loaded anyway or use 2 tags). For a design you...
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    As Nick says, if the pdf isn't an AutoCAD created...

    As Nick says, if the pdf isn't an AutoCAD created version it wont recognise all the lines etc. If it is a scanned document you have no chance of converting successfully, it's best just to underlay...
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    I don't think it is any more onerous than the...

    I don't think it is any more onerous than the previous version, just had to be updated to fall in line with BS EN 16508-2015 (with some NASC changes to suit the UK). I don't agree that you can't...
  7. Yes a shallower angle measured against vertical...

    Yes a shallower angle measured against vertical is better for a raker or spur and the method I've described gives you that.
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    Generation have a depot in Newcastle; Generation...

    Generation have a depot in Newcastle;
    Generation UK
    Forward House, Portobello Road
    Portobello Industrial Estate
    Birtley
    DH3 2SN
  9. If the standards aren't one-piece you would need...

    If the standards aren't one-piece you would need to splice the joints, usually using a short tube and 2 swivels to each side of the sleeve. A tower will be braced to full height on all 4 sides and...
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    You need to install an additional handrail to...

    You need to install an additional handrail to comply with the work at height regulations minimum of 950mm if you use tube transoms. If you don't install it you wouldn't be in compliance with the law,...
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    Cheers Baxter, i did get some info on that...

    Cheers Baxter, i did get some info on that component from Layher - looks like it will do the job.
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    Given that we deign scaffolds for 90mph + wind...

    Given that we deign scaffolds for 90mph + wind loads, there would be nobody on site at these wind speeds therefore no live load.
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    This is usually calculated as a percentage of the...

    This is usually calculated as a percentage of the vertical live load and varies depending on the work being carried out between 2.5% and 30%. i.e. if you have 10 kN live load acting vertically on the...
  14. From a loading perspective it makes little...

    From a loading perspective it makes little difference. You do get a slightly better angle by having the raker below the bottom ledger and above the top ledger which reduces the axial and horizontal...
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    I agree with you OB, the figures quoted in...

    I agree with you OB, the figures quoted in TG20:13 are the minimum requirements for a beam using in a TG20:13 complaint bridged scaffold, it is still fine to use higher figures as specified by the...
  16. There a really good book on scaffolding &...

    There a really good book on scaffolding & estimating, its only £7.70 on Amazon for the kindle edition just now; it's called "scaffolding, the handbook for estimating and product knowledge" by Michael...
  17. For those figures you would divide 500 by 0.7...

    For those figures you would divide 500 by 0.7 giving you 714 man hours
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    Thanks for all the responses, some good ideas

    Thanks for all the responses, some good ideas
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    U system but could use O ledgers and scaffold...

    U system but could use O ledgers and scaffold boards
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    Yes but that still leaves the stub at the top of...

    Yes but that still leaves the stub at the top of the standard above the top rosette (80mm roughly) protruding through the decks doesn't it?
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    Layher Birdcage

    To any Layher users; Whats the easiest/best way to achieve a flush top boarded platform on a Layher birdcage? Other systems have ways of doing this but as far as I can see, Layher don't. Obviously i...
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    I agree with ID that structural analysis is the...

    I agree with ID that structural analysis is the best method for long span duopitch roofs or more complex type temporary buildings but some experience in using the software is vital to ensure you get...
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    As Alan says, difficult to specify the best way...

    As Alan says, difficult to specify the best way without seeing the drawing but could you under sling a lacing tube from the top chord on doubles at 1.0m centres then plan brace from that on swivels?...
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    For temporary roofs (and most other external...

    For temporary roofs (and most other external scaffolds) you first need to calculate the wind load using EN 1991 or TG9:12. You then need to ascertain the most onerous load condition for each...
  25. Saw this getting stripped last week, it was a big...

    Saw this getting stripped last week, it was a big sheeted job around the whole building but looks like they had stripped most of it before this happened - if it had been the full height there would...
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