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Buckling occurs because of compression in the top flange, not because of lateral loads. When the top flange reaches its compressive limit it'll buckle. I'd assume it'll buckle in the nominally weaker direction and more likely away from the applied load, not towards it.

You mean for a 254x102x22 UB? I took half of a 3.5m span (guess) at 0.80kN/m2 Dead and 0.75 Live (for the roof), and 0.9m of cavity wall, on a 7.5m span Based on that, the deflection of the 254x102x22 beam under dead and live load is 44,5mm. Live load deflection is within limits of span / 360...

No, three reasons (off the top of my head). 1: It's risky to use joists to prevent buckling as it relies on them being cut perfectly and tight to the beam. 2: Usual for the joists to bear above the beam when used as a lintel so don't provide any restraint. 3: The joists would only be coming in...

Never ever use a 254x102 UB as a lintel above a doorway. They are useless unless restrained as they are too slender and will buckle long before they reach their full bending resistance. A 254x102 simply isn't sufficient for the span (my quick check indicates a 254x146x43 as an absolute...

Yes, and you would expect the vendor to have some crack monitoring records and reports that they could pass onto the OP. There would potentially be recommendations of work to be carried out (such as pollarding or removal of trees). If there is a report that states that mitigating work has been...

Need photos of the whole elevations to have any idea

Can you see anything from in the attic space? If a beam is installed (or gallows brackets) usually they are installed in the loft space so would be visible. I can't think how it wouldn't be possible to see the support if there is one. If the loft space is fully boarded it may be hiding...

A structural engineer won't just tell you it needs looking at - they will be the ones doing the looking at. At the very least they will recommend that you have gallows brackets installed, but they depend on a number of factors and it's difficult to prove they work by calculation. The...

The packers need to be either flexible (steel) or perfectly flat, otherwise the stresses induced will potentially cause them to crack (which is what seems to have happened in one place here) Ideally the packers should have at least the same compressive strength as the pad stone, but it would be...

Interesting one. Seems to me there wouldn’t have been any issues if they’d have just built what had been approved. Not really a mobile home is it? Not like the park homes you see dotted about the place. I doubt very much it was brought to site in two halves, craned into position, and bolted...

Possible structural issues? They must have a reason to state that, mustn’t they. “Possible structural issues” with no commentary on the reasons for saying it sounds like arse covering of the highest order… Ask them to elaborate on why they have put that sentence in their report.

You'd be better off insulating the rear of the ashlar wall with Kingspan and insulating between the joists rather than rafters - no point insulating the storage space itself.

Exactly - it's always a PITA as you invariably end up hitting an unfilled void.

If this is the case, don't they have issues when trying to fix to the masonry with expansion bolts or resin anchors? This is another reason why frog up is preferable as I know from experience it's a real pain when you drill into a brick and when you pump in the resin you end up filling up a...

There you are then. With the huge factors of safety there still shouldn’t be any issues! (If you can stop it buckling during construction :unsure: )

Good question. I would think ideally any voids should be filled up in any bricks to ensure maximum strength of the masonry panel. I’d also expect that any testing carried out in labs to give the compressive strength of a panel constructed with a particular strength brick would have higher level...

No, always upwards in load bearing walls as the whole frog should be filled with mortar to give the design compressive strength. Often the frogs are laid downwards in non load bearing walls as it saves on mortar and strength isn’t an issue. Still not necessarily good practice though.

Yes, you need to stop water getting under the bath by fully sealing around it. If you waterproof under the bath any water that does get in there will never evaporate away. As well as the risk to the electrics, it will quickly ruin your plasterboard, causing the ceiling to sag.

I’d say that’s not bad value. There’s a lot of work in doing planning drawings and then detail drawings for building regs. As a structural engineer who occasionally does building regs drawings, I’m well aware that the building regs drawings take much longer than the structural drawings, because...

If you move a joist over it would probably be fine but you will be increasing the load slightly on one of the joists and that could technically mean it no longer works. Can you turn the bolt around so you have the coach bolt head this side which won’t protrude? Or just move the bolt over a bit...