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Tactile Ground Surface Indicators TGSIs Specifications & Compliance?

Posted by on September 26, 2014 in TGSIs | Comments Off on Tactile Ground Surface Indicators TGSIs Specifications & Compliance?

The following post has been reproduced with permission from Dale Sheppard from Access Solutions National:   The endless complexities of the Standards continues. I thought I’d post this after having discussions with numerous people regarding equipment and equations. Most people are getting this wrong. Please note that the Standard defines two (2) ways to calculate luminance contrast (Building elements – TGSI’s use the same equation) – most people are just using the Bowman-Sapolinski equation for building elements...

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What Percentage do discrete TGSI’s need to be?

Posted by on September 26, 2014 in TGSIs | Comments Off on What Percentage do discrete TGSI’s need to be?

Architects, Designers and the like often fall into the trap of specifying the individual tactile dots. These individual tactile dots are called discrete tactiles. Discrete tactiles are required by AS1428.4.1 – 2009 to have a minimum allowable luminance contrast ratio of 45%. This usually catches people out as most people know about the 30% contrast ratio but haven’t come across the 45% or the 60% (composite discrete tactiles) requirements. For example see pictures below of where these discrete tactiles do not have sufficient...

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Contrast @ Federation Square

Posted by on September 26, 2014 in General | Comments Off on Contrast @ Federation Square

Federation Square is one of the most contrasting places in Victoria!!! Contrasts of people, Cultures and Surfaces. Fed Square has come a long way since it first opened in terms of Disability Access. One thing is for sure – Fed Square is a visually stimulating place to visit.   Accessing Venues   Main Square The undulating surface of the Main Square is made up of sandstone cobblestones, with a marked access path. Swanston Street offers the best access to the Square and lift access is available from The Atrium. The Big Screen is...

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Why is Luminance Contrast important

Posted by on September 19, 2014 in General | Comments Off on Why is Luminance Contrast important

Impaired Vision There are over 300,000 people in Australia who are blind and/or have impaired vision. This number is constantly increasing, as one person is diagnosed with irreversible vision impairment every 65 minutes. Unfortunately, most of these cases can not be corrected by wearing glasses or contact lenses. By 2021, it is estimated that the total number of blind or vision impaired people in Australia will increase to over 420,000. According to Vision Australia, vision impairment is defined as “any person who has some degree of sight...

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Luminance contrast for contrasting bands on glazing

Posted by on September 8, 2014 in Glazing | Comments Off on Luminance contrast for contrasting bands on glazing

Why are glazing bands a standard requirement? There are many buildings and properties that create barriers for people with disabilities. These barriers are usually created unintentionally and are most often the result of a property designer having little to no working knowledge of disabilities and/or not knowing what constitutes as an accessible environment for a person with vision impairment. Glazing bands are extremely important for people with vision impairment. These bands are used as an alert to the glass barrier which prevents people...

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More information about Luminance Contrast

Posted by on September 8, 2014 in General | Comments Off on More information about Luminance Contrast

People often enquire about luminance contrast. According to the Australian Standard, luminance contrast is defined as “the light reflected from one surface, compared to the light reflected from another surface”. This is not to be confused with the difference in color or color contrast, but rather the difference in the reflective properties of each color. Both the Building Code of Australia and the Disability Standards state that there are minimum provisions set for the levels of luminance contrast in buildings and on accessible paths of...

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Concrete and Polished Stainless Steel

Posted by on August 22, 2014 in TGSIs | Comments Off on Concrete and Polished Stainless Steel

Luminos Consulting have just tested Concrete and Polished Stainless Steel. It’s important to note that the concrete paver has a sealant on it to prevent water changing to surface which in turn does not change the test results between dry and wet tests. The use of these two surface is quite common especially in external environments and usually appears with stainless steel discrete TGSI’s on a concrete surface. The picture shows the samples that were tested.       Share...

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Luminance Contrast Equipment & Equations

Posted by on August 22, 2014 in General | Comments Off on Luminance Contrast Equipment & Equations

The endless complexities of the Standards continues. I thought I’d post this after having discussions with numerous people regarding equipment and equations. Most people are getting this wrong. Please note that the Standard defines two (2) ways to calculate luminance contrast (Building elements – TGSI’s use the same equation) – most people are just using the Bowman-Sapolinski equation for building elements other than TGSI’s. This equation is ONLY usable for luminous reflectance values and should not be used with...

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