FIELD-RECORD CHECK

Roof Pitch Calculator: Measurement Photo Label Check

Give every measurement photo and its written rise/run pair the same roof-plane label. A photo can show where a number came from only when the two records can be matched later.

Original diagram showing a labelled roof photo note matched to the same labelled rise and horizontal run record.
One shared label links the physical roof plane, its photo, and the calculator input pair.

Keep visual and written records together

A calculator uses numbers, while a field photo preserves context. Neither record automatically identifies the other. Add the same short roof-plane label to the photo and to the rise/run note before the calculation is shared, checked, or repeated.

Photo label

Plane A
rear main slope
date: ___

Calculator record

Plane A
rise: ___
run: ___

Do not infer the pair from a picture alone

A photo may be useful evidence of location, but it does not supply a calculator-ready rise/run pair unless those values were measured and recorded. Keep the original measured pair, its units, and its plane label beside the result.

1Label the plane

Use a label that identifies the exact roof surface.

2Apply it twice

Place it on the photo and the written rise/run record.

3Check the match

Only use a pair when its record and location label agree.

Can a roof photo replace a rise/run measurement?

No. A photo can document location, but a roof pitch calculator still needs the measured vertical rise and horizontal run from the same labelled plane.

Geometry record only.

Matching labels improves traceability. It does not confirm the measurement, roof layout, structural design, material suitability, or approval.

Method and scope

  1. Original calculator logic and field-note practice. This page provides a recordkeeping method and makes no construction, product, or regulatory claim.

This is an original calculator-record guide, not a structural layout or construction approval.