Verify the inputs
Measure or document each input. If a value is only an estimate, record its source and test a conservative alternative.
Construction/ CALCULATOR
Gutter fall and support set-out
Turn gutter length, intended fall and maximum support spacing into end level and evenly spaced support points.
FROM ESTIMATE TO ACTION
Use the result, not just the number.
Keep the calculation traceable
Save the input link or copied result together with the date, units and assumptions. A number without its inputs cannot be checked later.
Confirm the decision
Compare the estimate with the related guide, current product data and requirements that apply at your location before buying or building.
Inputs to verify
- Gutter run length (m)
- Measure along one continuous run between defined high and low points.
- Intended fall (mm/m)
- Use the system manufacturer or applicable local requirement.
- High-end offset below datum (mm)
- Vertical offset from a repeatable level datum to the gutter reference point.
- Maximum support spacing (m)
- Use the smaller spacing required for the material, loads and local conditions.