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  1. C

    Garden Room - Steel Beam Help Please!!

    Nah, must be almost at the boundary. Digging down more is still something I'm contemplating. I'm even considering a wooden framed floor...which I steered clear of up to now as it consumes a fair bit of the 2.5m height allowance when you take into account the raising above soil level, joist...
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    Garden Room - Steel Beam Help Please!!

    Hi @RobinBHM - thanks for the reply. Very good point! So, I was thinking that with the joists fitted and OSB fixed to the outside...particularly on the rear wall, this would add enough rigidity to the structure. However, I take your point about the front wall which is mainly made up of bifold...
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    Garden Room - Steel Beam Help Please!!

    Hi @imageel - many thanks....this is really useful information. It's good to know that I'm not a million miles out with my spec. I'll likely opt for a 100mm or a 90mm SHS post. Not sure about the base plate position....I have it offset as it will need to sit up against the concrete base I'm...
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    Garden Room - Steel Beam Help Please!!

    Hi @Darrenb - thanks for the pointer. I've actually already been looking at Oakwood YouTube videos a lot over the past couple of months. I contacted Liam there to ask him about the steel - I know he favours RHS 160x80. I'd copied his template in one of my earlier design iterations...until the...
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    Garden Room - Steel Beam Help Please!!

    Hi @morqthana - thanks for the reply. I toyed with a warm roof but I lose too much in the interior height as I need to put in a treadmill for the Mrs who's already pretty tall. This raises her getting on for 8inches off the floor already when she does her stupid hill climb runs. Also...
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    Garden Room - Steel Beam Help Please!!

    Many thanks for your reply @Jameshow. I think 100mm might be the best option for me as it will match (almost) the stud thickness on each side so will be easier to align during construction. The roof thickness (if I've done my sums right) will be circa 195mm, which is the 150 joist, 18mm OSB...
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    Garden Room - Steel Beam Help Please!!

    Hi all, Please be kind, I'm new here! So I'm designing a 5m x 3m Garden Room. Looking to put down an insulated concrete base (100mm thick) on 70mm insulation and 100mm compacted MOT1. I want to make the most of the 2.5m permitted development height to put in a gym. The room itself has changed...
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    My Garden Room Build - 9m x 4m

    That's great mate...thanks. Actually my roof is about the same size. Will take a look at the blue book but think my mind's made up. Very many thanks for your help. I'm gonna study your follow on posts on the other build elements so expect to be quizzed some more!! Thanks again!!
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    My Garden Room Build - 9m x 4m

    Hi Martin, Thanks again for your reply....it does help...a lot!! Appreciate "you know nothing"!! :) Couple more questions....the Blue Book I found online doesn't have the graduations on beam size that yours appears to....can you send me the link to the Blue Book you are using? Also, can I...
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    My Garden Room Build - 9m x 4m

    Hi Martin, Fantastic post!! I've been trying to figure out what beam to use in the garden room I'm planning. I've trawled the internet and this is the first time I've seen anything like an explanation that tries to lay out the basic calculations required....So many thanks for that...
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