Radiant heat: parallel openings
Flux received from an opening that faces your wall across the boundary, and the separation at which it meets your criterion.
Open the calculator →Fire engineering calculators
Calculations that show their working
Radiant heat between buildings and time equivalence, worked to published methods. Every step is shown, with a table and a sentence ready for your report. Free to use. The calculations run in your browser, so your inputs never leave your device.
Radiant heat: wall at 90°
Flux along a wall that runs away from the emitter, with wing walls, offsets and return walls, and the shortest wing wall that does the job.
Open the calculator →Time equivalence
Equivalent fire severity to EN 1991-1-2 Annex F and the IFEG, with the IFEG fire load densities and range checks, compared with your FRL.
Open the calculator →Checked, not just coded
Each formula is compared with direct numerical integration and with physical limits, and the calculators reproduce worked cases from completed projects. The validation page runs those checks live in your browser. Defaults and constants are stated, and you can change them.
Drafting support for fire engineers
Emberline is made by Cavies. We prepare performance-based design briefs and reports, calculations and figures to your firm's templates and conventions, for your review and sign-off. If your team is stretched, email tin@cavies.studio.