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Adds a "Storm Sewer" ribbon tab backed by a new in-repo `stormsewer` engine crate (vendored under crates/). The engine implements standard public-domain methods — Rational-method peak-flow accumulation, Manning circular-pipe hydraulics, time-of-concentration / IDF intensity, and an HGL backwater pass with junction losses — with 24 unit tests and no external dependencies. Module (src/modules/storm_sewer/): - Drafting: SS_INLET / SS_JUNCTION / SS_OUTFALL place structure markers and SS_PIPE chains pipe runs (interactive CadCommands). - Analysis: SS_ANALYZE / SS_REPORT / SS_PROFILE open a .ssn network file, run the engine, draw the plan and HGL long-section, and print a report. - SVG icons; SS_* commands registered for command-line autocomplete. Integration is additive: build.rs auto-discovers the module and one dispatch block is added to src/app/commands.rs. 7 module integration tests. See src/modules/storm_sewer/INTEGRATION.md for the design and the optional follow-up (drive analysis from canvas geometry via XDATA). Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
18 lines
939 B
Text
18 lines
939 B
Text
# Sample storm-sewer network (stormsewer-cli examples/sample.ssn)
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# A short, properly-sized trunk line: two catch basins + a junction to outfall.
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IDF 60 10 0.8 # i = 60 / (t+10)^0.8 (in/hr, t in minutes) ~ 5 in/hr
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TAILWATER 100.5 # outfall tailwater elevation (ft)
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MINTC 10 # minimum time of concentration (min)
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JUNCTIONK 0.5 # junction loss coefficient
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# id kind x y invert rim area C tc_inlet
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NODE N1 inlet 0 0 104.0 110.0 1.0 0.70 12
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NODE N2 inlet 300 0 102.5 108.5 1.0 0.70 10
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NODE N3 junction 550 0 101.2 107.0 0.5 0.80 8
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NODE OUT outfall 730 0 100.0 106.0
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# id from to length dia n (dia: 15in=1.25, 18in=1.5, 21in=1.75)
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PIPE P1 N1 N2 300 1.25 0.013
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PIPE P2 N2 N3 250 1.50 0.013
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PIPE P3 N3 OUT 180 1.75 0.013
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