Conversion Calculators
All 7 →-
Degrees to Ratio and Percentage
Convert the angle of a slope — a ramp, for example — from degrees to a rise:run ratio and a percentage gradient.
-
Degrees Celsius to Watts per Square Metre
Convert a temperature in degrees Celsius to the equivalent black-body radiant heat flux in watts per square metre.
-
Grid to Radius
Convert the spacing of a detector or sprinkler grid into the radial distance from a fire at the centre of that grid — the worst-case travel distance to the nearest head.
-
Percentage to Degrees and Ratio
Convert the gradient of a slope — a ramp, for example — from a percentage to an angle in degrees and a rise:run ratio.
-
Radius to Grid
Convert the radial coverage of a detector or sprinkler head into the maximum square grid spacing that keeps a fire at the centre within that radius.
-
Ratio to Degrees and Percentage
Convert the rise and run of a slope — a ramp, for example — to an angle in degrees and a percentage gradient.
-
Watts per Square Metre to Degrees Celsius
Convert a radiant heat flux in watts per square metre to the equivalent black-body temperature in degrees Celsius.
BCA Calculators
All 9 →-
Acceptable Heat Flux from a Boundary — BCA C1V1
C1V1 specifies the acceptable heat flux at the boundary and at 1 m, 3 m and 6 m from it. This calculator interpolates the acceptance level at any distance from the boundary.
-
Acceptable Heat Flux from a Building — BCA C1V2
C1V2 specifies the acceptable heat flux from another building on the same allotment at 0 m, 2 m, 6 m and 12 m. This calculator interpolates the acceptance level at any distance.
-
Egress Width — Maximum Population — BCA D2D8
Determine the maximum population a storey can accommodate, based on the aggregate unobstructed width of its required exits.
-
Minimum Aggregate Unobstructed Width — BCA D2D8
Determine the minimum aggregate unobstructed width of the exits required to serve the population of a storey or room.
-
Fire Compartment Floor Area — BCA C3D3
Determine the Type of Construction required for a fire compartment from its floor area, in accordance with C3D3.
-
Fire Compartment Volume — BCA C3D3
Determine the Type of Construction required for a fire compartment from its volume, in accordance with C3D3.
-
Natural Light Verification — BCA F6V3
Calculate the Average Daylight Factor for a room and check it against the natural light requirements of F6V3.
-
Luminance Contrast — AS 1428.1-2009
Check whether two surfaces achieve the 30% luminance contrast required by AS 1428.1-2009. The light reflectance value (LRV) of a paint colour is normally published by the manufacturer.
-
Population — BCA D2D18
Determine the number of persons accommodated in a storey, room or mezzanine, based on the type of use and the floor area, in accordance with D2D18 of the Building Code of Australia.
Fire Engineering Calculators
All 10 →-
Fire Appliance Response Time
Determine how long a New South Wales fire appliance takes to travel a given distance, using the travel speeds in Table F2 of the Fire Brigade Intervention Model.
-
Conductive Heat Transfer Rate
Calculate the steady-state rate of heat conduction through a material from its thermal conductivity, thickness, area and the temperature difference across it.
-
Detector and Sprinkler Activation Time
Calculate the time for a heat detector or sprinkler head to reach its activation temperature under a growing t² fire, using the DETACT ceiling-jet correlations.
-
FDS Mesh Cell Size
Determine a suitable Fire Dynamics Simulator mesh cell size from the characteristic fire diameter D*, following the FDS User Guide.
-
Flame Height and Plume Temperature
Calculate the flame height of a fire and the plume centreline temperature with height, using the Heskestad and McCaffrey correlations.
-
Flame Height from an Opening
Determine the height a flame projects from an opening in an external wall, and how far it stands off the wall, from the compartment floor area, opening dimensions and fire load density.
-
Radiant Heat Flux (Complex)
Determine the radiant heat flux received at any point relative to a rectangular emitter, where the receiver is offset from the emitter centre in X, Y and Z.
-
Radiant Heat Flux (Simple)
Determine the radiant heat flux received at a given distance directly opposite the centre of a rectangular emitter.
-
t² Fire — Time to Maximum Heat Release Rate
Calculate how long a t² design fire takes to reach a nominated maximum heat release rate, and plot the heat release rate curve up to that point.
-
t² Fire — Heat Release Rate at a Given Time
Calculate the heat release rate a t² design fire has reached at a nominated time, and plot the growth curve up to that point.
Bushfire Calculators
All 5 →-
Asset Protection Zone — NSW PBP 2006
Look up the Asset Protection Zone (APZ) required for a building under NSW Planning for Bushfire Protection 2006.
-
Asset Protection Zone — NSW PBP 2019
Look up the Asset Protection Zone (APZ) required for a building under NSW Planning for Bushfire Protection 2019, Appendix 2 — including the split into Inner and Outer Protection Areas.
-
Bushfire Attack Level — AS 3959 Method 1
Look up the Bushfire Attack Level (BAL) for a site from the vegetation classification, effective slope and separation distance, using the Method 1 tables of AS 3959.
-
Bushfire Attack Level — AS 3959 Method 2
Determine the Bushfire Attack Level (BAL) using the detailed Method 2 procedure of AS 3959, which calculates the radiant heat flux at the site from the fire characteristics of the classified vegetation.
-
Bushfire Attack Level — NSW PBP 2019
Look up the Bushfire Attack Level (BAL) for a NSW site using the vegetation formations and tables of NSW Planning for Bushfire Protection 2019.