Me2005 wrote:Couldn't you put the toilet under the stair? Maybe you don't want to run plumbing all over, but that's close to the other room and it'd separate them.
The Relaxation Vault needs to be a fully equipped albeit compact chamber for the maintenance of organic specimens.
Also that stairwell space will be packed with electrical support equipment (e.g. isolation transformers, chargers, batteries, switchgear) so I'd rather not introduce additional plumbing.
Me2005 wrote:Make sure to slope everything towards drainage (garage floor slopes to garage door, lower level slopes toward sump, roof slopes toward door unless you build a French drain somewhere else).
For the lower level, the perimeter drainage channel will have slope, possibly there should be drains with direct pipes to the sump embedded in the 100 mm floor screed as well. For the upper level simple direct slope is ok as you say.
Any thought to drainage around your building yet? Soil is great at holding water and causing leaks.
The contractor has suggested coarse gravel around the footings with filter fabric over, perforated drain pipes around the perimeter with transfer pipes cast into the footings to under the slab, leading to two 1.2 m diam x 1m depth perforated concrete soakaways at the shallow end (will also connect to rainwater downpipes). Sump pump outlet pipe will direct to a third soakaway situated on the other side of the lawn.
The marble floor & walls were suggested by the contractor also;
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