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 8215 Posts Member #: 90 Post Whore Somewhere around Swindon |
4th Oct, 2012 at 10:57:53am
I am at a point where i need to build some space in my garage loft, either side of my garage running down the length of the garage is two big joists these are around 300mm x 100mm and are 3mtrs apart, i intend to put some structual timbers across between these joists and board out a section, is these a formula to work out what size i can use? i was thinking 100x47 would be strong enough but have the option of 125x47 and 150x47 however they abviously get heavier and would be harder to install
Crystal Sound Audio said:
Why wolfie...you should have your name as Fuckfaceshithead ! "A common mistake that people make when trying to design something completely foolproof is to underestimate the ingenuity of complete fools."-Douglas Adams |
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 6729 Posts Member #: 618 Post Whore Glasgow |
4th Oct, 2012 at 12:51:22pm
you will be able to find Trada span tables on the web that will give you the size and spec for the new timber. However, this would all depend on the loading the existing joists are able to carry, bearing in mind waht they may already be carrying |
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 6965 Posts Member #: 507 Fastest A Series Mini in the World leeds/wakefield. |
4th Oct, 2012 at 07:46:13pm
Neil you fucking puff, 150x47 is a 6x2 and at 3m long is not in any way shape ofr form heavy,
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 16540 Posts Member #: 4241 King Gaycharger, butt plug dealer, Sheldon Cooper and a BAC but generally a niceish fella if you dont mind a northerner Rotherham, South Yorkshire |
4th Oct, 2012 at 07:47:42pm
since when was 47mm 2"? On 11th Feb, 2015 robert said:
i tried putting soap on it , and heating it to brown , then slathered my new lube on it 
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 11046 Posts Member #: 965 Post Whore Preston On The Brook |
4th Oct, 2012 at 07:50:24pm
On 4th Oct, 2012 apbellamy said:
since when was 47mm 2"? When it's planed edge On 26th Oct, 2004 TurboDave16v said:
Is it A-Series only? I think it should be... So when some joey comes on here about how his 16v turbo vauxhall is great compared to ours, he can be given the 'bird'... On 26th Oct, 2004 Tom Fenton said:
Yep I agree with TD........ |
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6965 Posts Member #: 507 Fastest A Series Mini in the World leeds/wakefield. |
4th Oct, 2012 at 08:27:45pm
Andy , a little lesson in timber sizes, 97x47 is 4x2, 145x47 is 6x2, and so on, these sizes are uaually prefixed by the term ex, meaning "from"
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8215 Posts Member #: 90 Post Whore Somewhere around Swindon |
4th Oct, 2012 at 09:01:21pm
On 4th Oct, 2012 fastcarl said:
Neil you fucking puff, 150x47 is a 6x2 and at 3m long is not in any way shape ofr form heavy, at a 3m span i would be looking at 7x2 @400 mm c/c min depanding on what you intended to load it with, carl Crystal Sound Audio said:
Why wolfie...you should have your name as Fuckfaceshithead ! "A common mistake that people make when trying to design something completely foolproof is to underestimate the ingenuity of complete fools."-Douglas Adams |
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3006 Posts Member #: 2500 Post Whore Buckinghamshire |
5th Oct, 2012 at 02:23:05am
I would be looking more closely at what Rob said in that you are going to add load to two beams that (presumably) are already carrying roof loads for which they were calculated.
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8215 Posts Member #: 90 Post Whore Somewhere around Swindon |
5th Oct, 2012 at 07:59:13am
It is only for light bulky stuff that takes up room Crystal Sound Audio said:
Why wolfie...you should have your name as Fuckfaceshithead ! "A common mistake that people make when trying to design something completely foolproof is to underestimate the ingenuity of complete fools."-Douglas Adams |
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