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SE didn’t provide a drawing that shows how the Steel is tied into the blocks. He mentioned it’s up to the builder. Builder says he was going to bolt a wall starter to the steel and build off that.

hi guys, I’ve currently been let down by a steel supplier after they have quoted for steels and are no longer honouring their price and delaying the delivery of the steels The builders unfortunately are unable to continue building the inner leaf of the extension as they need to tie the blocks...

I have written confirmation from the SE about enveloping the existing foundations and he was happy to confirm it is suitable if we tie rebar into it. However in this situation, as we didn’t envelope the foundations on the inside, I believe the confirmation would be void.

Ive attached a before pour and after pour. BCO have asked it to be poured 1m deep and the builders dug under the existing pad by 1m. To envelope the existing pad. The bit I am worried about is the stuff between the shuttering and the foundation. To be honest if I was to do this myself, I would...

Even if he stated the next visit is DPC? The pad on the flank wall is not yet complete as it will be poured in 2 batches.

Tony, are you sitting the steel on a padstone with a 100mm bearing? What size UB is that? Compared to my setup, im trying to think why I have been given a goal post frame. My beams are twin 300x90x41 PFCs. Interestingly my builders have highlighted they have done bigger openings with UBs...

No he hasn’t seen the pad, he inspected the excavation. They basically wrote on the inspection sheet to call them back for DPC. Which would imply, after the foundations are poured and first set of courses laid.

Yes it got poured. It’s just about at the right height. Unfortunately adding the Builder would have raised the level of the concrete too much :mrgreen:

Yes. He approved it with the new foundations. Mentioned he only needs pictures of the hole once the steel mesh is in.

Yes, agreed. I’m sure the SE would reject any failures as it wasn’t adhered to his design. Unfortunately, I’ve already paid pretty much the whole sum to the contractors... (I know, rookie mistake). Managed to get the pad more centred. Probably got a 1200x1200 x500 pad now. I don’t like the...

I’ve got someone to do the works, still stressful and not easy...

Guys, are there any structural engineers who can help me confirm the maximum bearing for a column on a bearing plate on a reinforced pad foundation (1200x1000x800) created on C35 with 10mm mesh on top and bottom. Unfortunately they are being poured today... My SE says it needs to be exactly...

Are you doing it all yourself or you contracting bits?

Btw, I’ve been talking to proctor group technical recently about the best way to reduce cold bridging on steel structures. They mentioned they have made a product specifically to do that - spacetherm cold bridging strips...

Funny you mention that. We actually found some bones whilst excavating the trench.... On a serious note, we’re not going to the top! And hopefully I have enough void. My party wall side of the foundations are designed to be eccentric. It will protrude about 300mm from the inner leaf wall. A...

As it’s a cavity wall, I would have though the SE would design twin beams or a twin PFC. One for outer leaf and one for the inner leaf? Then insulate the cavity and the web? A solution to your problem could be, £100 buys a 1200x1200 10mm aerogel blanket. Maybe wrap it up using double sided...

Sorry, I don’t understand. I don’t believe I have a problem with the air vents? They will be cut into the 2nd course of bricks above the retaining wall. And below the cavity tray. The other end of it will be cut into the Block below the inner leaf DPC and above the foundations. I haven’t drawn...

The design I showed was more for measurements. I have attached the same design noting the mechanisms. Yes, there will be a 3x telescopic air vents about 150mm above raised ground level. At 2m centres. This has been checked and ok’d by BCO. As the rest of the house is also timber void, it...

well my builder was the one who suggested to me to excavate deeper if I wanted the top of the trench lower. Which I was effectively charged more for.

If I link a geodrain membrane to a French drain, is that not the same?