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Few queries on my builders work need clarification before i ask them: Timber joists infilling- Rear Extension builder has infilled between timbers with concrete block with no mortar yet my house which is around 7`s year old has mortar beds either side of blocks which is correct...

the brickies have started loading out steel beams over patio opening on friday was in the garden today a look a bit off to the eye so measured this with a lazer level and tape and it would appear at the mid point its 20mm lower that the ends but only on the welded flat plate section not the UB...

do you need to bed steel beams onto concrete padstone or can they just go straight onto pads.

i would like to opening in for an new external door way close to the corner of my existing house now that the rear single storey extension as been built, is there any guidance to say this is not allowed.

i have 2 questions related to flat roof joists. joists 4x2 400mm centres Q1: Can the joist sit directly on top of steel UB then block work either side and above or is a timber wall plate required? Q2: wall plate / leadger board connected to existing cavity wall, what size threaded rod is...

3 courses of Trench blocks have drifted inwards at the end of the run, shall i overhang inner blocks or bring everything in 20mm and reduce 100mm cavity to 80mm cavity is full fill batts ?

Q1 I have on the drawing a 7n block pier between 2 bifold doors, the width is 440mm should i half a block and alternate courses to both inner and outer leaf or will stacking them on top be stronger. Q2 when pouring the base slab is it better to pour rght up to outer skin below the door...

I have 2 foul plastic pipes cutting through my foundations, which I have shuttered either side by 100mm to full depth of trench. So effectively I now have a 300mm wide full depth cutting within the foundation run in 2 places. Question: Is this correct or should I be still pouring concrete...

can someone provide clarity on this, am i correct in thinking its dpc behind each of the catnic stronghold connectors, but wherewould the filler board go?

might be because its a Saturday night, but can someone please clarify the pier detail, does it mean min solid 300 x 300 blocks or can the traditional 300mm cavity wall do for this provided the inner and outer skin is 7.3nm2

Is it ok to use strongboy props on the first floor to create an opening coming off existing floor joists or is it better to go from ground level with longer props?

I am building 2 storey rear extension, i currently have 2.4m patio door with cavity tray and weep holes above to external wall, once built this will become an internal wall should i remove the cavity tray to prevent water from entering the property ?