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Pros and cons of exits for toilets on new house with on site Septic tank

Calahonda52 · 2024-09-09 11:38:30

Two options 1: through the wall and down Pros, A: can be done later in time line B: no interference with floor/foundation insulation c: pipe invert higher ⇒ higher percolation area⇒ less digging Cons looks shite, especially with EWI 2: cast into floor slab eg 75mm screed 300 XPS 150 RC slab already 550 -200 or 350 below…

09-09-2024 11:38am

#1

Calahonda52

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Join Date: January 2015

Posts: 12148

Two options
1: through the wall and down
Pros,
A: can be done later in time line
B: no interference with floor/foundation insulation
c: pipe invert higher ⇒ higher percolation area⇒ less digging
Cons
looks shite, especially with EWI
2: cast into floor slab
eg
75mm screed
300 XPS
150 RC slab
already 550 -200 or 350 below garden level
May clash with foundation insulation in Low E/PH
Any thoughts/ ACCs?

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