Interactive demos
The engineering logic, running in your browser
Each demo reproduces one rule the real tools apply, on a fictitious canal package: how supervision decides a package is critical, what a design section looks like against existing ground, and how quantities become a bill of quantities. No real project data is used anywhere on this page.
01Supervision S-curve
Used in Sipromon. Progress is computed, not estimated: every step uses the same item weights as the contract bill of quantities.
S-curve: planned vs actual
Fictitious 18-week canal package. Move the reporting week; the status follows the contract rule (critical when more than 10 points behind while planned ≤ 70%, or more than 5 points behind after that).
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Method: item weight = item amount ÷ contract subtotal; planned = weight spread evenly over the item's scheduled weeks; actual = Σ weight × min(installed ÷ contract quantity, 100%). Package, quantities, dates and actions are fictitious.
02Canal cross-section
The kind of section the Long Cross studio draws for every station: design section by Manning uniform flow, checked against existing ground.
Cross-section viewer
Three surveyed stations of a fictitious earth canal: existing ground, the trapezoidal design section with small banks, the design water level, and the cut and fill between them.
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Design basis (Manning, uniform flow): Q 0.45 m³/s · n 0.025 · S 0.0006 · b 0.80 m · side slope 1:1 · normal depth 0.639 m · V 0.489 m/s · Fr 0.235 · freeboard 0.40 m → design depth 1.05 m. Local datum; data fictitious.
03Quantities to bill of quantities
One source of numbers: earthwork volumes from the sections flow into the estimate, and the weights flow on into the S-curve. The same chain is traced in the design review.
Quantities → bill of quantities
A fictitious 1.2 km canal package. Earthwork quantities come from the cross-sections by average end area × length; edit them to see amounts, subtotals, weights and the total follow.
Swipe sideways to see every column.
| Code | Item | Unit | Quantity | Unit price | Amount | Weight |
|---|
Weights are what the S-curve uses. VAT shown at 11% for illustration. Nothing here comes from a real project.