Pipes and ducts with real fittings.
Ten systems, product catalogues, bends and tees that appear where they belong, and connection ports that snap to the fixtures.
The system decides everything
Pick drainage or heating flow and you get its colour, tag, default size, bend radius, usable angles and IFC class at once. Colour comes from a tag, so a whole system switches off without touching the drawing.
Fittings appear by themselves
Bends are built from segments with the radius the system uses — 0.75 × D for drainage, 1.0 × D elsewhere. A bend that also changes size is one fitting, not two.
Branches are recognised even though they end in the middle of a run rather than at its end. Click anywhere on the main pipe and the end snaps onto its axis; you get a saddle and sockets, drawn the way the socketed systems are actually made.
Ports that things connect to
Free ends carry a connection port made of real geometry, so SketchUp reports it as an endpoint and the Move tool grabs it. Library fixtures — a WC, a ventilation unit — carry ports in the same format, and snapping to one overrides the angle grid and the gradient, because hitting a port is always deliberate.
A schedule you can price
One row per size per system, not one per segment. Lengths have the parts occupied by fittings deducted, and fittings are counted separately by type, size and angle — an 87.5° bend is a different item from a 45° one, because it is a different product.
The rest of it.
Walls & openings
Draw a chain, and the corners mitre themselves and stay mitred. Windows and doors live in the wall as parameters, so nothing breaks when the wall moves.
Roofs
Not just rectangles. An L, a U, a plan with a wing — the hips, valleys and ridges are computed from the outline, so complicated roofs stop being a modelling exercise.
Floors & stairs
The parts of a building that are tedious to model and easy to get subtly wrong. Draw the walking line and the treads, landings, soffit and the opening in the slab above follow.
Structure
IPE, HEA, HEB, UPE, angles and hollow sections from the catalogue — with joints cut to follow the profile, not sliced flat.
Documentation
Plans per storey, named sections, hatching by material at your drawing scale, schedules, and a LayOut file at the end of it. This is where the SketchUp ecosystem stops.
IFC
Material layers, openings linked to their fills, quantities computed from the geometry — and a check that stops two elements collapsing into one in the viewer.