Rainwater Storage Balance Workbench

How to use Rainwater Storage Balance Workbench

Provide roof areas and collection efficiencies, a capacity and initial volume, then an ordered rain/demand series. Choose whether collection or demand happens first within each period; the report preserves spill and unmet demand rather than borrowing from a future row.

1. Use the example as the schema; replace its labels and entered model assumptions.
2. Provide roof areas and collection efficiencies, a capacity and initial volume, then an ordered rain/demand series. Choose whether collection or demand happens first within each period; the report preserves spill and unmet demand rather than borrowing from a future row.
3. Calculate, inspect the complete witnesses and limitations, then copy or download the JSON report.

Good to know

• Up to 20 catchments and 200 periods. Areas are positive and at most 1,000,000 m², rain is 0–1,000,000 mm per period, and capacity/initial/demand are 0–1,000,000,000 L. A period has no inferred duration. No potable-water, design or irrigation recommendation is produced.
• Local calculation with no upload, input persistence or outside lookup. Model JSON is limited to 30,000 characters and 10,000 values. Decimal quantities are strings with up to six places; count fields use plain JSON integers. Exact fractions are capped at 8,192 bits. The complete JSON output is limited to 1,000,000 characters; approximate numbers preserve their stored values. Unsupported states fail explicitly.