I have exposed the inlet on base of a 450mm IC for my future connection, offering up the underground swp to inlet appears to be very loose.
I have spoken to drainage suppliers who say the inlet socket should be a tight fit & demonstrated this with an chamber base & pipe.
The inlet seems to be 5mm to 10mm larger than my swp, impossible for a water tight seal against the existing rubber seal.
I have read somewhere a the use of a taper pipe, is this called a level invert taper pipe?.
Is this the correct way to go bearing in mind the LBC will be viewing this.
Any help would be highly appreciated.
Thanks Guys