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I thought I'd update this thread to say all went well, very hard work especially getting down to the foundation, but the steels are all in and the BCO is happy with it. Took a total of 7 days (a 4 day weekend and a 3 day weekend) from installing the acrows (I put needles through the weekend...

Inner wall is light weight block, not Thermalite though. I'll feel most comfortable using needles and acrows, I know everything is well supported then.

Thanks, I have considered Strongboys, but from what I've read they can't take as much weight and are not ideal for cavity walls, and I thought they had to go closer to the wall so gave less space.

@tony1851 Appreciate what you are saying, but without going to another SE with another fee I doubt I'll ever really know if there is another viable option. What's you're opinon on the the needles, two x 5" x 2" C16 adequate enough, with 5 pairs of acrows?

I've been listening to my own common sense, it may not get particularly windy here in the south east, but I've lived through two very bad storms, one in the late 70's and the other in 1987, and there's been others since. Surely you remember seeing picture on the TV of houses with wall's missing...

@tony1851 Because the external return to the corner is only 480mm, so the brickwork is tied into the post, otherwise the corner could flex in strong winds, and potentially be blown out.

I'm soon going to be fitting goal post steelword to the rear of our house, whilst I've fitted steel beams before it's never been to this scale, except when I helped the builders over 10 years ago take out the wall in our kitchen which was of similar size. The opening is going to be 3500mm wide...

I'd hardly say the BCO insisted, as I never challenged him (I have in the past and won, but that's a different story), he said it would be required and that's what I expected so accepted it. I originally asked the SE to do a design the steel and do structural calcs for the opening and I...

No, I'm not sure if the SE has done calculations to see if a brick return would suffice. I spoke to BCO and he said a goal post frame would be required. Its a two storey house, and part of the original house, wall thickness (ignoring plaster) is 265mm, cavity aproximaitly 60mm. Just been...

@theprinceofdarkness Thanks for the reply, I was hoping not to have dig down 750mm then remove the outer skin down to the foundations. But my SE says it really needs to go down to the foundation, they have modified the baseplate though so it won't be under the floor slab and that means I can...

Hi all, I'm new to the forums but have been renovating and altering houses for well over twenty years. We've been in our current house for around 14 years, having built a large extension we're now doing the last room in the house that needs doing, once that's done I can put my feet up at the...