Russell griffiths

still confused. if your internal finished floor is 600mm higher than the concrete foundation, you will want external ground level 150 below damp course level or ffh, so your external ground level needs to come up 200mm at least, so won’t that allow you to route your pipes out anywhere.

I think all this drainage is a bit 1980’s based any company coming to unblock something will have a jetter, they are not rodding it. but the regs are the regs I suppose.

30 m is the maximum distance between chambers if I remember rightly.

I’m not understanding your problems in your other posts. can you summarise is your concrete foundation too high in that it is stopping you exiting the building in a better location will you not be bringing up the land around the building to cover any pipes you want to bring the pipes out where you have a step in the footings so I’m assuming the above. the pipes can exit anywhere and lay on top of the footing, as long as you lintel over them there’s not a problem. what am I missing.

I would carry on with the trench footing, you are so close to getting finished. you will need 25 sheets of plywood and a bundle of 4x2 you need building control involved to get a feeling for finished depth as you can only dig this once. start by the house and pull the trench in to max depth for aprox 2 m, get it all propped properly that means full sheets all the way to the bottom, progress along to the corner and keep propping, your groundwork guy should not have a problem with this. if he’s not happy I think he lacks experience that is a very small extension and should not pose any problems you need concrete pre ordered and a concrete pump ordered, as the building inspector looks at it get it poured an hour afterwards it will only take an hour to unload 3-4 trucks of concrete into that get it dug one day and poured the next.

My ten cents worth the inspection chambers on the two 90 degree turns, fit 45degrees bends to the chamber you then in effect turn the chamber into a slow radius bend instead of a sharp 90.

Put the bends as close to the chamber as possible not under the slab.

I think the idea is you can put it where you want, if it 2as in the lid you end up with a noisy lid in the middle of your lawn, their way you can put it in a shed out the way, or behind some shrubbery, your not limited to it being in the tank.

@MortarThePoint do not put the blower unit in your house, they are noisy mine is in a garden shed 3m away from the tank, you can hear it running when walking past the shed.

Basically think of it like this, if it’s fixed to the house or is a part of the house, bricks tiles timber nails screws you can claim it, if it enables the house to be built you can’t claim it, professional services, scaffolding, skips, digger hire.

Our boundary which is a kilometre long is out by over 3 m give or take a bit, the fat red line on the land registry plan is rough at best.

Green coat plx raised seam from metal Soloutions in Bolton.

Just hire one.

like the other photo in this post it’s all down to how high your water table is. having to hire box shuttering to install your tank can seriously damage your wallet.

We all seam to answer with our opinions, but it’s never really answering the original question Dave said he did his in a couple of days, but his hole is tiny, the hole you are suggesting is huge and will have approx 30 cubic m of clay coming out of it. dave said he mixed his concrete himself, again no problem but his hole is again tiny, yours is huge, your not hand mixing 10 cubic meters. you can use a wet mix if your hole is dry, if you have water in the hole you need a dry mix. I think this job is very different depending on ground conditions and tank used. @flanagaj has just done his maybe he could put up some more up to date and in context pictures.

Digger hire far too low operator for a day, you won’t get that work done in a day spoil from the hole, where’s that going spoil, how are you moving it to where it’s going. digger and operator for second day to position gravel and lift in tank. concrete backfill should be a semi dry mix a wet mix can float the tank out. you can’t pump a dry mix. it’s a 3 day job, why do you want to fill the tank a bit at a time, position it in the hole and fill it up. you are underestimating this job massively.

IMHO that’s not good enough.

I’m not sure what bit your trying to comply with. for me I would think to manufacture that yourself and have it all comply I would use. laminated external glass, toughened internal. door lock that has high and low level shoot bolt or hook bolt. on the hinge side anti lift hinges or anti lift pins. must obviously comply with u value for the glazed element.

As said above, you won’t be using tiles or slates. at that pitch you will need a metal sheet of some description or rubber or felt, all of these will actually help as the weight load will be less than tiles, you still need to calculate in snow load on such a flat roof.

Hoggin in London has a lot clay particles in it to make it bind. can leave mess on your shoes if wet.

Cotswold path gravel, needs laying with a bit of a fall as it doesn’t drain as well as you would think, it compacts very tightly.

On a previous post we found some nice cor ten retaining walls you no likey

I would get two cans of illbruck fm330, squirt it in to every little gap and fill it proud of the rafters, then when it’s gone of cut it flush.

Depends what distance this pipe is traveling across the house if the bathroom is on an outside wall you can lift the pipe up in the layers, it doesn’t have to be under the type 1. if the bathroom is in the middle of the house you need to consider the structure of the floor above the pipe. lift the house higher

To knock down a burnt out shell of your house, then get the foundations inspected then re build your house to the spec it was using a principal contractor to do the whole thing will be £700,000 all day long. just because your going to build it cheaper using your head and a bit of carful planning doesn’t mean the insurance company can do it like that. if you suffer a total loss you don’t want to be under insured. have you had a quote to build the whole thing with zero involvement from you, it bet it will be £600,000.