RiserSheet turns sprinkler hydraulics into a live spreadsheet

Field notes

RiserSheet models sprinkler design as a grid of pipes and nodes rather than a drawing canvas. Its sample project covers a two-story office and reports eight flowing heads, 274.7 gpm demand, a 100.0 gpm hose allowance, and a 20.5 psi riser margin. The page says calculations run through WebAssembly on every keystroke, while the full application can produce an NFPA 13-formatted report with pipe and node tables, a supply-and-demand graph, and a designer statement.