LRV/Luminance Contrast Calculator

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How it Works.

The Australian Standards AS/NZS 1428 requires a minimum level of luminance contrast between certain building elements, including the application of stair nosings and tactile indicators. This is reinforced by the Building Code of Australia (BCA).

This free online calculator is your quick guide to compliance, providing you with the luminance contrast value for dry and wet readings, with a Pass or Fail to Australian Standards. As well as getting instant readings, you can have a report with the results emailed to you.

To get started you simply enter the LRV of the stair or floor finish you are using (if LRV is unknown ask the supplier). The calculator does the rest based on the pre-populated LRV of the stair nosing or tactile ground surface indicator (TGSI) type selected.

Click here for our video guide on how to use our LRV calculator

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LRV

Conditions – Are you calculating the luminance contrast for dry conditions or dry and wet conditions? Please select.

Stair/Floor Finish LRV – You will need the LRV of the stair or floor finish you are using.

Enter your stair/floor finish name/type (e.g. Timber Walnut):

Dry Conditions – Enter the LRV of your stair/floor substrate. If the mean value is already known, enter this in the first box. If you are doing an on-site test, you will need to conduct 10 LRV readings, and populate all boxes. The mean value will then calculate automatically. (Required)

Mean Dry Value

Product LRV – What product are you using with your stair/floor finish?

This calculator is pre-populated with the LRV's for Classic Tredfx stair nosings and tactile indicators. If you select ‘other product’ you will be required to enter the LRV.

Luminance Contrast Results - Based on the Australian Standards AS/NZS 1428 here are your results.

Luminance Contrast Required :

Luminance Contrast (Dry) Result :

Send a copy of the results to your email address

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Click here to send an additional copy

Please note that Classic Architectural Group does not accept any responsibility for the accuracy of the results as the LRV’s were not obtained on site using our own testing procedures. We can assist you with LRV testing on site and provide compliance advice, to give you the certainty you need.

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How it Works.

Conditions – Are you calculating the luminance contrast for dry conditions or dry and wet conditions? Please select.

Stair/Floor Finish LRV – You will need the LRV of the stair or floor finish you are using.

Product LRV – What product are you using with your stair/floor finish?

Luminance Contrast Results - Based on the Australian Standards AS/NZS 1428 here are your results.

Luminance Contrast Required :

Luminance Contrast (Dry) Result :

Luminance Contrast (Wet) Result :

Please note: The 30% luminance contrast requirement is applicable to general access and mobility products, and does not include individual tactile indicators as per AS/NZS 1428.4.

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