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Thanks for your replies. Direct costing comes out in favour of the 254 but I have noticed it is always a less preferred option to the plate. I know headroom often dictates but I think MIStructE IRE's comment "he’ll complain when the clearly oversized beam arrives on site..." about sums it up !

I am sure someone has done this exercise. For beams supporting existing cavity walls, say about 5m long for instance - how does a 203UC46 with 290 x 10 plate welded on top compare in price with a 254UC73 plain beam with no plate ? Plate for picking up wall overhang only, not considered for any...

Thanks for that! Great help.

We frequently get asked to size beams over bifold doors. What is a typical weight/m2 for these & a limiting deflection under load of door plus any live load over (eg roof over)? Thanks

Thanks all & thanks Triangled for the link, most helpful. M.

I've been asked to calculate an overturning load on a mobile structure that will have windbreak mesh on it. I see it quoted as 50% or 60% reduction. Would this be a reasonable approach to say an overall Cp of 0.5? Has anybody any experience of this or know where there are any actual design...

What will be the situation with Eurocodes if the UK leaves the EU?

DKLA, This looks a bit dodgy, mate. I think that with the other parameters you have to consider with composite design, like loads in construction phase prior to full design loads, propping issues & costs for shear studs etc. that unless this a huge job I would design as non-composite. I also...

Get the spec. of the material (alloy & temper) & origin of supply. After some years in the aluminium industry I know this to be a bit of a "black art" & stuff can come from all over the world. Quality control in US/UK/EU should require some certification of origin. If not, best to leave.

I am currently looking to strengthen an existing RC beam & am considering plating the underside. Looking at the concrete, existing steel & new plate composite action what would be the correct way to consider the shear connection between plate & concrete? If using the standard FAy/I type of...

I am currently looking at bonding steel plates to the sides of a concrete beam to transfer shear across an opening to be cut through the mid-section of the beam. Although adhesives available give around 10 N/mm2 shear, the ultimate value of shear at the interface appears generally to be taken as...

Perhaps I should have explained this better. The elements in question are vertical cladding/curtain wall aluminium sections which have to be designed for both negative & positive wind loads. Unfortunately the largest force is often negative wind pressure which puts the unrestrained flange into...

Has anyone any references (or thoughts about) the effect on the slenderness ratio if the tension flange only of a beam is restrained? This seems to be largely ignored in UK codes but is quite a common situation in lightweight structures. The only reference I have seen has been in the Canadian...

Hi All, Does anybody know where I could download a copy of a programme to work out the above? There used to be freebie discs given away by manufacturers of insulation but these appear no longer available.... Yours in anticipation. M.

pclegg25 Not sure about the Bosch connection ??? but contact Eltheringtons (Stockholders & fabrication...Hull) 01482 320336 who can maybe help you out.

As I understand this, you are looking for the bending moment on the rods.Effectively the tightened fabric will curve out giving a force as a tangent to this curve onto the rods. There are so many variables here which would have to be considered and for the size of the problem are practically...

Best to fix down thru' the slab & not on the edge because a)fixing on the edge of the slab will give you limited edge distance, thus reducing the allowable pull out on the anchors-see trade literature... b)you have to resist a moment from a force being applied at balcony rail level horizontally...

Check out Roarks "Stresses & strains" which gives formula for stress & deflection of plates.

Whyun, to confuse the matter, in England "English Units" are called "Imperial units". Ho hum. As an aside, remember the beginning of Pulp Fiction and the discussion of burger weights in Europe....? Also, what's the situation with aircraft/airlines? Presumably...

I think trilinga has made a major point regarding the use of computer software by younger engineers. Many now use programmes for working out very basic stuff that us older guys just turn out using "hand calculations" In many companies senior engineers have also been guilty of dumping...