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  1. #1
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    Oct 2005
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    Default Bearers joists span tables etc

    Hello everybody,

    have read literally hundreds of posts here, and a pretty common problem is timber sizing etc. Anyway happened upon a very good site that has tables for timber sizes, beams, lintels, rafters etc

    http://www.fordtimbers.com.au/dpr_span_tables.htm

    also for pine

    http://www.designpine.com/designande...spantables.asp

    and I've often found CHH pretty useful for beams - light and easy to install

    http://www.chhfuturebuild.com/WSMApa...8720-1,00.html
    designIT software is good.

    Saved me buying a table book which last time I looked were a hundred bucks or so. Anyway happy renovating!

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  3. #2
    Join Date
    Sep 2004
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    Strzelecki Ranges Victoria
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    Default Timber spans

    If anyone wants to know any span sizes etc just let me know through the forum.
    Peter Clarkson

    www.ausdesign.com.au

    This information is intended to provide general information only.
    It does not purport to be a comprehensive advice.

  4. #3
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    Jan 2005
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    Sydney
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    Default

    The hardwood that Ford produces is a great product, i can stand by it, beware that if using hardwood from Vic it will not reach aceive the same spans as this stuff.

  5. #4
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    Jan 2001
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    NSW
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    Default For Peter-Beam Selection

    Hi Peter,

    Here is the drawing with the dimensions.
    Attached Images Attached Images

  6. #5
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    Default For Peter-Beam Selection

    Peter,

    Here are some photos.

    Thanks,


    Glen
    Attached Images Attached Images

  7. #6
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    Oct 2005
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    Default

    I could not find on these sites how deep footings should be when building a deck or the like.
    Pharmaboy2 or anyone else do you know where i could get this info?
    I live in Townsville which has a cyclone rating and i want to build a varandah along the side of the house (shade cloth roof). Could anyone give me some info on footing sizes?


    readie

    Ps thanks for the other sites they will help with the framing dimensions. I wish i had found this website 5 years ago

  8. #7
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    Smile

    Another great website is this for the qld people on the forum

    http://www.timberqueensland.com.au/application/diy.asp

    readnik

  9. #8
    Join Date
    Sep 2004
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    Strzelecki Ranges Victoria
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    Default

    readnik, the foundation depth is determined from the site soil classification.
    if this is unknown or you do not wish to go to the expense of having a soil test done many councils will accept 'founded at depth of existing footings'

    The minimum embedment for Class A & S sites is 400mm
    Class M 500mm
    Class M-D 800mm
    Class H 1000mm

    The area of deck supported by each post then determines the pad size required.
    Peter Clarkson

    www.ausdesign.com.au

    This information is intended to provide general information only.
    It does not purport to be a comprehensive advice.

  10. #9
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    Default

    thanks very much ausdesign much appreciated


    I live in an estate in townsville so i am sure the developers would no this soil type so i will hit them up on my next break.

    thanks again


    readnik

  11. #10
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    Sep 2002
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    Central Victoria, Australia
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    Default

    Hi Ausdesign

    I am looking into doing a deck (when they finish the house that is). Could you possibly give me some help on spans, post sizes etc.

    It will be coming straight of the back of the house enclosed in the "Alfresco" area. It will be approx 6m square. I wanted to do the construction from treated pine and deck it with merbau or preferably jarrah if the budget permits.

    Any tips would be greatly appreciated.

    Ash

  12. #11
    Join Date
    Sep 2004
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    Strzelecki Ranges Victoria
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    Default Timber Decks

    Greetings Ash.
    There are many configurations of bearers & joists that you could use.
    For example 140*45 joists could span 3 met, requiring 3 rows of bearers ( one at the house) 2/240*45 bearers will span 3 met requiring 3 stumps along each length.

    The Timber Promotion Council victoria have a booklet (used to be around $14) with spans and info on stumps, step materials, posts etc etc - called "Timber Decks design & construction manual" I don't know if this no. is still current 9662 3222.

    Alternatively if you send a detailed sketch of the layout and what you want to do I'll look at it but as i said there are many configurations
    Peter Clarkson

    www.ausdesign.com.au

    This information is intended to provide general information only.
    It does not purport to be a comprehensive advice.

  13. #12
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    Oct 2003
    Location
    Gold Coast
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    Default

    Pharmaboy - thanks for the links.

    I have had a look at the DPR tables and have a few questions. I am looking a buiding a small shed (3x4m) on a slab with a gable roof. Looking at the tables for 2400mm studs there a several columns I'm not to sure about.

    Frame Size (75 or 100mm) - I assume that this is the depth of the wall frame?

    Roof Span in mm - is this the span along the wall frame (ie the length of the frame) or is it the roof span perpendicular to the wall frame (ie the distance between the two frames spanned by the rafters/truss)?

    I also have a question re timber grading - I have access to recycled hardwood 50mm x 75mm - what stress grade should I use? It is well seasoned! I was thinking F11 or F14?
    "If something is really worth doing, it is worth doing badly." - GK Chesterton

  14. #13
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    Default

    Well, the house is just about paid off (10 years into the 25 year loan and she who must be obeyed wishes to extend.

    Currently a 3 bedroom timber home, steel roof.

    What we would like to do is add (to the rear of the house) 2 bedrooms, and a toilet, convert the existing bathroom to an ensuite and one of the existing bedrooms to the new bathroom.

    The fall of the land would allow an additional room under where the wanted extention would be.

    What I woud like is to have is a wall free area of approx 6m x 5m (7m x 6m would be nicer for use of whatever I want (games room, home theatre, garage, workshop, bar, whatever

    Suggestions to accomplish this ?
    Steel beams perhaps to support joists ?

    All suggestions accepted

    cya

  15. #14
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    Jan 2005
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    Canberra
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    Default

    Quote Originally Posted by Dion N
    Frame Size (75 or 100mm) - I assume that this is the depth of the wall frame?
    Yes

    Quote Originally Posted by Dion N
    Roof Span in mm - is this the span along the wall frame (ie the length of the frame) or is it the roof span perpendicular to the wall frame (ie the distance between the two frames spanned by the rafters/truss)?
    Span is overall measurement of the wall frame, usually the shortest run. In your case it would be 3m.
    http://www.josephfusco.org/Articles/...pan%20of%20the

    Quote Originally Posted by Dion N
    I also have a question re timber grading - I have access to recycled hardwood 50mm x 75mm - what stress grade should I use? It is well seasoned! I was thinking F11 or F14?
    Your 75*50 Hwd will be fine, no need to worry about what grade it is.
    Only worry you'll have with it is how to get a nail through it

  16. #15
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    Default

    Quote Originally Posted by Terrian
    What I woud like is to have is a wall free area of approx 6m x 5m (7m x 6m would be nicer for use of whatever I want (games room, home theatre, garage, workshop, bar, whatever

    Suggestions to accomplish this ?
    Steel beams perhaps to support joists ?
    Running a steel UB down the centre of the room to carry the joists is usually the cheapest option.

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