GROUP DLA’s Post

DLA003 | WHEN DOES A WALKWAY BECOME A RAMP? | In designing ramps for accessibility, architects and interior designers should note that a walkway becomes a ramp when its slope is steeper than 1:20 but shallower than 1:14.  A walkway is what you would traditionally see without needing any handrails or tactile indicators for NCC / BCA compliance and is a much simpler install if you have the space for a 1:20 fall between surfaces. For a ramp, depending on the gradient Australian standards specify different requirements that need to be detailed by your designer/architect, some of these requirements are as follows, the ramp may require wider widths than the minimum 1000 mm wide normally needed, as curved ramps require a minimum width of 1500 mm. Landings are to be provided at the top and bottom of ramps, as well as at 9 m intervals for ramps with a 1:14 slope, landings must be at least 1200 mm long. Ramps must include handrails on both sides that do not obstruct the clear width, along with kerbs or kerb rails. The ideal approach angle is zero degrees, and crossfalls for curved ramps should slope towards the center of curvature that have maximum fall allowances. Additionally, ramp surfaces must meet slip-resistance classifications as outlined in Table D3D15 of the BCA / NCC, and ramps need to be provided with Tactile Indicators. Overall a much more complicated design than a simple 1:20 walkway we are sure you would agree. #YMOMNK #YouMayOrMayNotKnow #GroupDLA #BuildingCompliance #Certification #BCA #PCA #DDA #Access  

  • No alternative text description for this image
Shane Berry

Technical Director at GROUP DLA

1w

One import thing to add would be how our specialist team of GDLA DDA Access Consultants have been an advocate and driving change in the industry now for 4 or 5 years, supporting the builders by repeatedly recommending to architects throughout the design phases to apply tolerances for buildability, i.e., very tricky to build an exact 1:20 ramp or handrails at exactly 865 mm, so always advising on the plans illustrating not steeper the 1:21 or 900 mm handrails, etc, etc, so many others. Millimetre by millimetre you are making a massive positive impact on the industry – well done A-Team keep it up!

See more comments

To view or add a comment, sign in

Explore topics