Plumbing workflow

1. Collectors and stacks. VMPIPEDR with sLope (the fall in %, Down or Up from the first point); a branch off a sloped collector keeps the fall; Height drops a stack.
2. Water. VMPIPECW and VMPIPEHW for the mains; a hot water cylinder from VMINSTALL.
3. Fixtures. VMINSTALL: wall-hung or floor-standing WCs, washbasins, shower trays, bathtubs, floor drains with vertical or side outlets, linear drains, gullies — their back against the wall.
4. Connect. VMSANCONNECT pipes every fixture at once: the drain into the wall, down through the slab and across to its collector at the fall you choose; the water to its mains on the same storey.
5. Calculate. VMDRAINCALC: the frequency of use (K), then each pipe's discharge units, flow, capacity, filling, velocity and the advised size.

See the pictures on the Plumbing page.