Gridgway Posted February 1, 2008 Share Posted February 1, 2008 ok, all you structural engineers I want to put an RSJ across my single gge to lift approx 500kg. How big does it need to be (how are RSJ's sized - QB, B and FB?)? ALso how big does the supporting pillar need to be in brick? Ta Graham Link to comment Share on other sites More sharing options...
shn7 Posted February 2, 2008 Share Posted February 2, 2008 Going multi level parking Graham? 😬 Steve. Sussex (West) AR Not forgetting Percy the Polar Bear Link to comment Share on other sites More sharing options...
Gridgway Posted February 2, 2008 Author Share Posted February 2, 2008 Steve, got some nice chassis stands for the Rad, but it's a bit scary getting it up (so to speak). SO I am hoping to put in the RSJ and a hoist to make it easier to do. From a bit of reseacrh on the web, I think I need to make use of a proper structural engineer to get it right! Graham Link to comment Share on other sites More sharing options...
Pipeliner Posted February 2, 2008 Share Posted February 2, 2008 Graham I depends on a number of factors:- 1. The Span of the RSJ ? 2. Are there any other loads likely to find their way onto the RSJ ? 3. Will the top flange of the RSJ be restrained laterally by timber joists etc ? Gram # Link to comment Share on other sites More sharing options...
IKB Posted February 2, 2008 Share Posted February 2, 2008 Graham. You do need a Structural Engineer. I suggest you look at www.localsurveyorsdirect.co.uk/structural_engineer for a local Engineer in your area. Any Chartered Engineer on this website who responds to you without visiting your property leaves himself wide open to any resultant failure that might occur....and with structures that can be serious.Maybe that is why you haven't had any advice so far! Do not attempt to calculate it yourself. Engineers take 5 years minimum to qualify so it is not a 5 minute job! This is a very simple problem so a visit and advice should not cost much. Better to be safe than sorry...a Seven on your chest could be very painful Edited by - brunel on 2 Feb 2008 18:41:14 Link to comment Share on other sites More sharing options...
Bertfatal Posted February 2, 2008 Share Posted February 2, 2008 When I needed an RSJ for an extension a quantity surveyor friend of mine said "just specify the biggest RSJ you can get, it will be cheaper than having the stuctural calculations done" Bertfatal Link to comment Share on other sites More sharing options...
metal mickey Posted February 2, 2008 Share Posted February 2, 2008 Bert, your friends not wrong ❗ Link to comment Share on other sites More sharing options...
FTH Posted February 3, 2008 Share Posted February 3, 2008 I assume the span is about 3m. If so a 203 or 254 UB will be more than capable. Piers will only need to be minimum size approx 300x 300, tie them in to garage walls and cast a concrete padstone around the beam ends. Link shows how Universal Beam sections are sized Dont bother with a structural engineer for something as simple as this- a good builder is what you need. Have you got sufficient headroom once youve attached your lifting accessories? Far cheaper/ easier/ more versatile is to buy an engine hoist. Link to comment Share on other sites More sharing options...
IKB Posted February 3, 2008 Share Posted February 3, 2008 Good builders are all you need....a couple of Acrows 'ere and we will have it up in no time. Oh f... what happened. Did we tell the Building Inspector? No! didn't you? Link to comment Share on other sites More sharing options...
Rob Walker Posted February 3, 2008 Share Posted February 3, 2008 Graham, This company does a super free standing four pillar electric car lift for £1620 inc vat and delivery. www .GARAGE-APPARATUUR.COM Rob Link to comment Share on other sites More sharing options...
FTH Posted February 3, 2008 Share Posted February 3, 2008 Good builders are all you need....a couple of Acrows 'ere and we will have it up in no time. Oh f... what happened. Did we tell the Building Inspector? No! didn't you? Oh and get the lifting beam tested and be sure to mark its SWL and then have a lifting plan by an appointed person......... This country NEEDS a recession. Id say Rob has the answer a stand alone built for purpose frame. Link to comment Share on other sites More sharing options...
singlespeeder Posted February 3, 2008 Share Posted February 3, 2008 is the garage attached or detached? how far will the beam span? will the weight be applied at a single point? Link to comment Share on other sites More sharing options...
Gridgway Posted February 3, 2008 Author Share Posted February 3, 2008 Thanks all for the info. The garage is detached and I am pretty sure there is enough height. It's to lift my Radical onto its chassis stands, so the load will be at a single point. The free-standing lift is just too big for the garage. I used an engine crane to get the Rad up this time, but it's pretty horrible n scary. Also it's very involved to get the car up off the ground initially to get the engine crane underneath. Graham Link to comment Share on other sites More sharing options...
Simon.Rogers1 Posted February 3, 2008 Share Posted February 3, 2008 Why are building regs involved? Who said anything about holding a building up. I've just done the same in my garage and its only supported by angle brackets bolted to the trusses (6). Have you any idea how much weight these trusses grouped together can support! 500kg is not heavy. However I am in the game and do design my own developments etc so can appreciate the question. I would suggest that FTH is on the money but that he's well over specified the RSJ Link to comment Share on other sites More sharing options...
FTH Posted February 3, 2008 Share Posted February 3, 2008 Thats because I knock buildings down rather than built them Leftfield suggestion get local scaffold company to erect some ladder beams with a couple of independant towers either side. Take an hour tops and be as cheap as chips. Link to comment Share on other sites More sharing options...
Gridgway Posted February 3, 2008 Author Share Posted February 3, 2008 like the scaffold suggestion, but I suspect that it'll take up more space than I have. Well I think that 500kg is heavy!! Graham Link to comment Share on other sites More sharing options...
martin b Posted February 3, 2008 Share Posted February 3, 2008 Graham I would give Sparrowhawks a buzz, local to you {just by the downs}, I am sure they can give you a hand, sell you a 2nd hand beam, cut it to size and deliver it. Is it a pitched roof garage ? They will fabricate a plate to spread the load on both sides if required. Just found the number and address, its 01737 352889 24 Epsom Lane North, Tadworth As Simon has said, 500kg is not a big weight in steel weight bearing terms Martin Link to comment Share on other sites More sharing options...
Sheds Moderator Posted February 3, 2008 Share Posted February 3, 2008 If you think 500kg is heavy, weigh a brick and work out how many you need for 500kg, then imagine/count how many are over a window or patio doors. 500kg isn't much inbuilding. Link to comment Share on other sites More sharing options...
Gridgway Posted February 3, 2008 Author Share Posted February 3, 2008 Great, thanks, I'll give them a call. Graham Link to comment Share on other sites More sharing options...
The bearded Yorkshireman Posted February 4, 2008 Share Posted February 4, 2008 a 152x89x16kg/M universal beam will gve you a single point centre lift of 500kg at a maximum span of 4.57M with a maximum deflection of 1 in 800 when supported at both ends. If your building is capable of supporting the imposed loads, go buy some steel. Dave Link to comment Share on other sites More sharing options...
Simon.Rogers1 Posted February 4, 2008 Share Posted February 4, 2008 Thats more like it. I've just purchase some beam calc software for my own design use. Now thats fine for me when I have all the loads etc but I'm no Engineer. But the size mentioned above by the Bearded one sounds much more sensible. Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now