1. Visiting from the US? Why not try DIYnot.US instead? Click here to continue to DIYnot.US.
    Dismiss Notice

How heavy is a 4800 x 250 x 75 C16 timber beam?

Discussion in 'Roofing and Guttering' started by ReggieStrant, 28 Sep 2010.

  1. ReggieStrant

    ReggieStrant

    Joined:
    12 Sep 2010
    Messages:
    29
    Thanks Received:
    2
    Location:
    Bournemouth
    Country:
    United Kingdom
    "Sources" suggest the density of C16 is ~370Kg/m3

    The cubic metreage of the 4800 x 250 x 75 beam is 0.090m3

    "Therefore" the beam should have a mass of 370 * 0.09 = 33.3Kg

    .... yet my timber supplier reckons it's too heavy to lift.

    Where am I going wrong?
     
  2. Sponsored Links
  3. RonnyRaygun

    RonnyRaygun

    Joined:
    4 Apr 2008
    Messages:
    1,672
    Thanks Received:
    239
    Location:
    Hertfordshire
    Country:
    United Kingdom
    Limit of 25kg on site these days isn't it?

    Although a man each end and while you might really be straining, I reckon you might just about manage it :LOL:

    Failing that maybe you could hire a Genie lift from your local hire centre to help you lift it into place :rolleyes: :LOL:
     
  4. ReggieStrant

    ReggieStrant

    Joined:
    12 Sep 2010
    Messages:
    29
    Thanks Received:
    2
    Location:
    Bournemouth
    Country:
    United Kingdom
    Good grief! Times have sure changed. I had no idea "manual" work had become so light-weight.
     
  5. mointainwalker

    mointainwalker

    Joined:
    24 Aug 2009
    Messages:
    2,333
    Thanks Received:
    221
    Country:
    France
    My local timber-mill works on 900 kg/m3 for green spruce and 600 kg/m3 when air-dried, so i reckon 50- 60 kg.
     
  6. ReggieStrant

    ReggieStrant

    Joined:
    12 Sep 2010
    Messages:
    29
    Thanks Received:
    2
    Location:
    Bournemouth
    Country:
    United Kingdom
    Ah-ha!

    That would fit more with the experience of a mate who reckoned such a beam would indeed be (proper) heavy.

    Those are interesting figures as they deviate vastly from the C16 data I have seen in at least two places. And that is odd because timber people are fond of saying density is a reasonable proxy for strength. Are we somehow now growing heavier yet weaker timber???

    So many questions ...

    Anyhow, thanks v much for the input. I'm coming around to using those (ghastly?) I-joist thingamies. Having said that, I've yet to see any references as to their use for my particular purposes (as binders shoring up a 4.5mx4.5m roof joisted with stringy 4"x2").

    Thanks again.
     
  7. Vegeta

    Vegeta

    Joined:
    2 Oct 2010
    Messages:
    10
    Thanks Received:
    1
    Location:
    Invernesshire
    Country:
    United Kingdom
    you could get a man to lift it for you. :LOL:
     
  8. chappers

    chappers

    Joined:
    27 Aug 2004
    Messages:
    3,254
    Thanks Received:
    357
    Country:
    United Kingdom
    two of you will lift that easily
    Most general softwoods would be between 450 and 600kg per cubic metre
     
  9. DIYnot Local

    DIYnot Local

    Joined:
    3 Sep 2019
    Country:
    United Kingdom

    If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.

    Select the supplier or trade you require, enter your location to begin your search.


    Are you a trade or supplier? You can create your listing free at DIYnot Local

     
  10. Sponsored Links
Loading...

Share This Page