Contact us for a quote to do your BAL report

AS3959-2018 requires a horizontal distance of 100 metres to be assessed

We use this simple conversion table for slopes of 10 degrees and over to adjust the measurements

to equate to a horizontal distance as required by the Australian Standard.

We have specific equipment to measure the slope however you might find this formula useful to estimate the slope:

10 degree slope is approximately a 1:5.5 height (h) to distance (d) gradient ratio or 18%

15 degree slope is approximately a 1:3.5 height (h) to distance (d) gradient ratio or 28%

20 degree slope is approximately a 1:2.5 height (h) to distance (d) gradient ratio or 40%

30 degree slope is approximately a 1:1.5 height (h) to distance (d) gradient ratio or 60%

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