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Cheers wavetrain, I will check it out, for some reason your post didn't show until after I had posted, do you have to refresh the webpage for new posts to show, I'm using IE9 do I need to change my settings?

I have found these on internet; www.freestad.com www.steelbeamcalculator.co.uk www.superbeam.co.uk Would anybody recommend any of these?

Hi, I would like to purchase some software for designing steel beams, has anybody got any recommendations for suitable software? I have a HNC in civil eng, so I am not a novice when it comes to designing.

The design codes that structural engineers design to, are generally overly conservative, thats why they usually require over-sized beams. Though I have been told that you can save upto 40% of steel weight on smaller beams if you design to new eurocodes, so that must be a step in the right...

Looks better, without doing the maths it would be hard to tell if shear walls are adequate, though the theory - diapragm walls etc sounds good.

catnic do a heavy duty lintel which is just a 203x133UB with a 6mm steel plate welded underneath, check out catnic's website, I'm sure most steel fabricators could knock up a cheap replica. Gerant if want to work out if the sizes, do some studying at college or such like.

geraint = troll 203x100 uc = section does not exist! gerraint you could mean a 203x102x23UB, not sure if that would be adequate if it had to support the load from a new extension, show us your workings? Gerraint why don't you try & help people rather than trolling.

Lateral stablilty might be OK if the wall between living room & kitchen and wall between kitchen and reception room act as butressing (shear) walls. Structural masonry designers manual gives an example of how to calculate the overall stablility of a masonry structure, it assumes that the...

clue for gerraint m=wl2/8 (for a udl) and don't forget the partial safety factors!

Hi Gerraint, without knowing the roof construction, span direction of floor joists, construction of the proposed extension etc, it would be difficult to determine the loads on the beams and thus be able to calculate their sizes, unless you know something we dont? I would reduce the span to...

Two beams might need to be say 300 to 400mm deep, the 254UC might be better if headroom is critical, though don't take my word, I might just be a muppet, the builder would probably want to use a polystyrene beam (I'm joking) as it would be easier to lift. Builders don't like structural engineers...

ignore this i posted above

I agree with static gerraint is not substantiating his claims, if headroom was critical perhaps a 254UC might do the trick. Though it might be wise to leave returns which will reduce the span and ensure that the structure is still stable. I'm afraid you will have to pay a good structural...

Beam and padstone calc's look good to me, the only thing I would be concerned about is the lateral stability (side to side) of the overall structure. The walls from side to side will act as shear walls resisting the wind load acting on the side of the building. The Engineer may well have...