Drainage is moved beneath the ground-floor slab. Visible water, electrical and AVAC services retain the exposed design intent.
A longer gravity drain falls while the terrain rises. Placing the station at the entrance therefore requires a deeper chamber.
The choice below balances excavation depth and proximity to the driveway. It does not select a pump.Compare locations on the plot
Building-local plan; +Y upward. Driveway and entrance come from the archived R10 site model. The entrance marker is not the public sewer connection.
From the slab to the station
Profile along the selected exterior route, beginning at the plinth exit. Vertical scale is exaggerated. Levels reference the same survey frame as the house; the utility’s 16.70 m chamber invert remains on an unconfirmed datum.
Below the house
Grey footprints are fixture references; circles locate proposed slab penetrations. Runs are beneath the slab, not embedded in its concrete. Traps, junction fittings and access points remain to be detailed.
Heights and construction
Open coordination items
Upper floor: the three fixtures at +2.82 m connect through an accessible internal ceiling band to the soil stack inside wooden cupboard module 6. Its paired cupboard on each floor becomes a service compartment. Steel members are avoided; floor, ceiling, partition and roof openings remain requests. See the combined 3D model.
Access: provide an accessible drop chamber at the plinth exit, cleaning access to branches and access panels through the enclosed plinth. These are requirements for the next detail, not completed access designs.
Why this location?
| Option | Ground level¹ | Pipe underside¹ | Excavation² | Distance to driveway | Result |
|---|
¹ Survey-frame elevations, metres. The inlet level is the bottom of the unsized outer pipe envelope; actual internal invert awaits product selection. ² From surveyed ground to an assumed chamber bottom 0.65 m below inlet; excludes base construction, working space, shoring and groundwater measures.
Ground-floor connection schedule
| Fixture | Result | Minimum terrain gap³ | Openings requested |
|---|
³ Pipe underside to surveyed terrain, sampled beneath the slab; does not establish human maintenance access. “Candidate” means the current geometric screening passed with stated opening requests.
Connect the study to the house
Explore the current architecture and the drainage reservations together, in the same building-local coordinates. Toggle layers, inspect provisions and review their source revision.
Odour control: traps, vents and sealed access
Collector-vent elevation uses building-local levels; the upper-floor soil stack is shown in the combined 3D model. The station is shown separately, not at its true horizontal distance. Violet lines are vent reservations. Trap and cover objects are detail markers; they are not selected equipment.
Inspection and ventilation status
Combined drainage + odour-control IFCTraps, vents, access and references JSON
Legal references attached to the design
Each row links the provision to the relevant article and states what is still open. These are targeted references, not certification of the complete installation. Numerical study assumptions remain identified separately.
| Design item / article | Requirement summary | Application and open work |
|---|
Basis, checks and files
Terrain drainage IFCCoordinates, profiles and alternativesPrevious above-floor studyLogical network + utility evidence