Stair Calculator
Riser, going and 2R+G to NCC 2025 D3D14, HP 11.2 and AS 1428.1.
Ramp Calculator
Gradient, length of run or rise, from a rise or RLs, with landings and clear widths to NCC 2025, AS 1428.1 and AS/NZS 2890.1.
Luminance Contrast
LRV contrast for doors, nosings, TGSIs and signs to AS 1428.1 and AS/NZS 1428.4.1.
Occupancy & Egress
People from floor area, exit count and widths to NCC 2025 D2D18 and D2D8.
Roof catchment area
Catchment area from plan area, slope and walls to AS/NZS 3500.3 Clause 3.4.
Eaves gutter and downpipe
Gutter size and downpipes to AS/NZS 3500.3 Clause 3.5 or HP Part 7.4.
Eaves gutter overflow
Overflow measures for eaves gutters to AS/NZS 3500.3 Appendix F or HP Part 7.4.
Long straight eaves gutters
Long straight gutters: an engineering check for a Performance Solution.
Valley gutters
Valley width, depth and sheet size to AS/NZS 3500.3 Clause 3.6 or HP 7.4.4.
Spreaders onto a lower roof
A spreader onto a lower roof, and the gutter below, to AS/NZS 3500.3.
Balconies, terraces and flat roofs
Outlets and overflow for balconies and flat roofs to AS/NZS 3500.3 and F1D4.
Charged downpipes to a tank
Charged downpipes to a tank: an engineering check for a Performance Solution.
Gutters & Downpipes (Housing Provisions 7.4)
Gutters, downpipes and overflow for Class 1 and 10 to NCC 2025 HP Part 7.4 (not VIC).
Box gutter to a rainhead
Box gutter width, depth and rainhead to AS/NZS 3500.3 Clause 3.7.
Sump with side overflow
Sump and side overflow channel for a box gutter to AS/NZS 3500.3 Clause 3.7.
Sump with high-capacity overflow
Sump and high-capacity overflow for a box gutter to AS/NZS 3500.3 Clause 3.7.
Sump with vertical overflow
Sump with a vertical overflow: an engineering check for a Performance Solution.
Stormwater pipe size
Pipe size and grade for a design flow to AS/NZS 3500.3 Clause 5.4.
Stormwater network
Pipe sizes through a site stormwater network to AS/NZS 3500.3 Appendix J.
Overland flow path
Depth and width of an overland flow path to AS/NZS 3500.3 Clause 5.4.9.
Grated inlet pit and surcharge outlet
Grated inlet pit capacity and surcharge outlet to AS/NZS 3500.3 Clause 5.4.
On-site detention
Detention storage by the modified rational method, as councils apply it.
Stormwater pump-out
Pump-out storage and pump rate to AS/NZS 3500.3 Section 8 and Appendix K.