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How about Quetta bond? Although this requires long bricks to maintain a cavity. Although I suppose it still works with standard size bricks - you just end up with small voids.

Hadn’t even looked at the beam or bearings. Also, usually there would be a few courses of masonry above the opening so I’d expect to see maybe a 150x100mm box section with a bottom plate picking up 100mm of masonry (maybe with snapped headers to mimic Flemish bond). Alternatively a solid wall...

No, it's pretty standard to do this.

There are "deemed to satisfy" dimensions in Approved Document A for returns either side of an opening. The SE has probably tried to limit the dimension to 850 so that it complies with ADA (although then they're relying on contribution from next door's extension the other side, which isn't...

Bricks expand for some time (years) after they leave the kiln, due to the slow absorption of moisture. This is why we put movement joints in long masonry panels. Reclaimed bricks should be at pretty much maximum moisture content (21% is pretty high), so expansion shouldn't be an issue. If they...

As the report says, tie bars provide lateral restraint to wall panels and usually indicate that external walls have bowed outwards because of lack of restraint from the joists. Cracking can sometimes also occur where the external walls meet the party walls (or at corners). Modern regulations...

I'm not a pro roofer but when I did my extension I had to grind a bit off the underside of the tiles so that they would sit flush on the Velux flashing. Doesn't look like that's been done (or maybe it's not possible with the tiles you have, but I would think it would be). The tiles aren't...

:LOL: I'm not sure I specified how to fix the trimmers together on the approved plans :unsure::sneaky:

The rooflights will come with fitting instructions and they will tell you what gap to leave. BC will insist that you use coach bolts to bolt the trimmers, and it's a standard detail, but I nailed mine together on my extension with lots of 3" ring shank nails from both directions (because while...

Why can't the first couple of courses be lightweight?

Are there joists spanning onto the lintel? Or a wall on it on the floor above?

I'd notch the ends and use joist hangers...

At what spacing? I think 0.25kN/m2 is a bit low once (presumably) plasterboard, OSB, insulation, firrings, and finishes have been added. Plus it's most likely the joists won't be a genuine 50x200 but will be regularised down to 44x195 or thereabouts, at which point they fail, even if only...

Right, so the snow load will only be around 0.3kN/m2. But even allowing no loading for access you will still need the joists at maximum 300mm spacings (with 50x200 C16). You'd also need to allow enough slope that ponding doesn't become an issue. Bear in mind that there will probably be...

Snow load depends on where in the country you are. However, you should really allow for some access load too. Either way I think it would be a bit tight to rely on 50x200 joists at 400crs. I'd want to go for 50x225mm C24 at 400mm crs or double up the 50x200s.

If they are only carrying floor load then you won't need a beam. You are correct that 50x150 joists will span 3.3m with no additional support. Have a conversation with the SE but you shouldn't need the beam.

If the wall you want to remove isn’t supporting the joists, what is? Is there another wall nearby supporting them? If so, ask the engineer if the joists will span with the wall in question removed.

The issue isn't that your ceiling will collapse if you turn it into a man cave - it won't. However, your floor would need considerable strengthening in order to comply with building regulations (plus of course all the other regs related to heat loss, means of escape etc etc). Floors are...

At 50cm away and 2.7m tall the zone of influence in low shrink soils won’t reach 2.5m so trench fill is ok if removed. However, there may still be stability issues and a good chance the tree will not survive having half its roots cut off. True re. the misconception. I’m regularly having to...

If you remove the 2.7m tree then it will never reach its mature height and so a smaller zone of influence can be taken, which means the foundations potentially don't need to be as deep.