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Yes. It's the downstairs chimney breast coming out. I guess the surveyor should recommend positioning of acrows. Mine hasn't.

Hi- thanks for this, but being new to this stuff, I'm not quite sure how this works- support right angled joists on acrows downstairs- fine, take upstairs floorboards up- fine...ish on chimney side, allowing for concrete hearth (flat bit around fire), get acrows through- fine, and then slide...

Hi- my structural surveyor has recommended a ceiling void RSJ. One side is joists at right angles, so I guess they will fit into the RSJ web which is fine, but the other side is a chimney breast, which is also fine. However!Upstairs on the rising chimney breast is a tiled fireplace I'm keeping...

Thanks for this, especially Thermo's reply! Sorry to be thick (that's my parents' fault) but I think I can still use the ceiling void, as the beam is going in where one room's joists hit it at right angles (and their ends sit on the supporting wall currently) before the next room's joist run...

Hi- just got my structural survey back for removal of a supporting wall and noticed that the calculated beam is UC 208mm, but the ceiling void is only 178mm deep. So it looks like I need an RSJ bigger than the void, and below ceiling height. Fine if I need it, but when questioning if I have to...

Hi big-all- to be honest, this is my first project where I have involved BC, so I'm trying to work everything out, so when the plans are submitted, the out of control officer won't chuck them straight back. Can you please advise me- are you saying I can submit a rough guide and then the...

big-all, noseall- thanks. This was my very first, and easiest route, which went nowhere unfortunately. After 1 day on the internet (sad I know), I concluded that there was no such thin insulator that would make the building control guy smile happily. If someone does know of insulation at less...

Hi- I am converting an integral garage to 'habitable' but half of the concrete floor is too high if I add insulation as per building control (7.5cm Celotex and floorbords at 1.5cm) due t0 its typical 1930's slope. The excess height is about 3cm, over about 3x2m. I need to avoid a step or slope...