Emitting Heat
Assess radiation from a proposed building opening toward a boundary or adjoining opening with manual criterion selection and explicit source temperature presets.
Rad Calc for Radiant Heat Flux Assessment
Evaluate peak local incident radiant heat flux for emitting and receiving exposure cases using reusable view-factor geometry, explicit source assumptions, and report-ready outputs.
v1 Scope
Stefan-Boltzmann radiation, multiple emitters/receivers/occluders, manual criteria selection, failing-opening reporting, and receiving-mode notional source presets with distance-decay graphing.
Professional Use Notice: Rad Calc is intended for qualified fire safety engineers. Source assumptions, criteria, and report wording must be reviewed and verified by a competent practitioner before use in a formal fire engineering report.
Assessment Modes and Outputs
Receiving Heat
Assess radiation received by the subject opening from an adjacent notional or explicit fire-source feature with editable preset assumptions and flux-decay graphing.
Governing and Failing Cases
Rad Calc reports the governing case separately and also lists every failing receiver, rather than collapsing the assessment to only the single worst opening.
Thermal Model Transparency
Rad Calc applies a Stefan-Boltzmann radiant heat flux layer on top of the existing geometric view-factor model. Occluders are treated as geometric obstructions only in v1. No radiosity, secondary emission, or transient effects are applied implicitly.
Users select the assessment criterion manually, inspect all source assumptions, and can optionally display pass/fail margin in absolute and percentage form.
Primary Output
Peak local incident radiant heat flux, reported in kW/m² with governing emitter, receiver, local point, emissivity, transmissivity, view factor, and criterion context.
Run Rad Calc in the Workspace
Open the current Rad Calc workspace directly from the primary tool route. Access remains permission-gated according to your workspace role.