Installing underground soil pipe

[morgand]

Evening all,

I am installing a new en-suite and so are installing a new soil stack at one end of the house, and then running a soil pipe underground through the kitchen while the concrete slab has been taken up for under floor heating. I am having trouble finding a definitive answer on where my soil pipe enters the property, on part H of the building regs it says either install a lintel, or for cored holes it should have 2 flexible couplers either side of the core hole, is this required? I only ask as it seems odd installing 4 potential points of failure where I could have a solid pipe going straight through.

Also, where I am breaking into the existing underground soil pipe outside , I am adding an inspection chamber, it's approximately 12m to where I will then be going up the new soil stack, is it satisfactory having 2 x 22.5 around the midway point of the new run without an additional rodding point or IC?

Thank you in advance!

 

[Wayners]

Not sure this will help.
I extended over drain.
My soil stack is at the centre of the house now with one of these at the bottom.

https://www.screwfix.com/p/floplast-push-fit-87-5-double-socket-rest-bend-110mm/12719?tc=MA7&gad_source=1&gclid=CjwKCAiA1eO7BhATEiwAm0Ee-PG_RwfnoEME7r_TwwvQyX4qwYLeCSCuL__awhRRflj8sMGnFGyuYxoCHz4QAvD_BwE&gclsrc=aw.ds

Then where the soil pipe exits house you should have a drain or rodding eye. I have a drain...

My neighbours drain also runs under our extension with a gradual bend and out to our drain.

You doing this workout building control?

 

[CagouleNow]

It's generally recommended to have an inspection chamber every 15 meters of horizontal soil pipe run. However, the specific requirements may vary depending on your local building codes. If you are using a plastic soil pipe, you may be able to use flexible couplers. However, if you are using a cast iron soil pipe, you will need to use a lintel. The soil pipe should be securely anchored to the building structure to prevent it from moving or sagging. Sorry I can't help more than that. It’s a complex business so might be worth picking the brains of bathroom installation experts of some sort - you should be able to get some free advice at least!