Drain knows which way it falls.
1/4" per foot unless the pipe is 4" or larger. Shop drain angles, flip flow, and 3D flow markers riding the centerline so you can see which way the line goes.
Isometric CAD
Plumbing isometric drawing software — inside your shop system.
Whole-home isometric drawings on a true X / Y / Z grid. Pipe, fittings, fixtures, slope, and hangers in the sizes your shop stocks — in the same product as the board and the invoice, not a second program on somebody's laptop.
The drawing
A real blueprint of the house, not a napkin sketch.
Cold, hot, drain, vent, and gas ride on every run. Charlotte and Canplas DWV profiles are in the catalog. Inch snap keeps the drawing honest; drop a floor plan under the runs when the job needs it.
3D is an editor, not just a view: place a fitting, rotate it, keep drawing from the open port. Turn on WASD walk and move through the house like you would on the shop map — look around, then keep editing.
Sample isometric drawing. Not a live customer.
What ships today
Drawn once. Counted, sloped, and walked automatically.
Hangers count themselves.
Hangers auto-space at the shop's interval and land in the takeoff — the small stuff the ticket usually forgets.
The takeoff is the drawing.
When the lines are down, the material list is already there — pipe lengths, fittings, fixtures, hangers. Takeoff details →
Print it. Hang it.
The sheet prints for the crew — the same drawing the office quoted from, not a redrawn second copy.
Calculator feeds the runs.
The plumbing calculator sizes supply and drain from fixture counts and feeds those sizes into drafting. Try the demo →
What's next, honestly.
Building toward intelligent flow through the whole system, auto sizing on the runs, and math helpers that stay on the sheet while you draw.
Why it matters
Other shop software doesn't have this part.
Dispatch tools dispatch. Drawing tools draw. NectARM is plumbing software where the isometric drawing, the takeoff, the job, and the invoice are the same record — the crew works off the sheet the office already priced.
Walk a sample house in 3D — the demo is fixed data and walk-only, but it's the real renderer.
See your own house
Bring a repipe to the walkthrough.
We'll draw a real run in the walkthrough — pipe, slope, hangers, the takeoff — so you can judge it against the way your shop draws today.