Beam Geometry

Wall Wash and Grazing Spacing Calculator

Estimate wall wash spacing and scallop risk from wall height, offset, and proposed spacing.

Lighting calculator Beam Geometry Updated August 26, 2026

Inputs

Results

Recommended planning spacing -- m
Scallop ratio --
Offset to height ratio --
Scallop warning --
Calculation details
Recommended planning spacing
-- m
Scallop ratio
--
Offset to height ratio
--
Scallop warning
--
Important notes
  • This calculator does not declare Australian standards compliance.
  • Use current product documentation and project-specific professional review where required.

Formula

  • Worksheet-style planning support. Record assumptions and review missing product or site data before relying on the output.

Estimate wall wash spacing and scallop risk from wall height, offset, and proposed spacing.

Wall Wash and Grazing Spacing Calculator is a planning aid. Keep the target source, product data, measurement method, and project assumptions with the result. Confirm compliance, installation, certification, and safety decisions with the responsible professional.