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CS-2009 IEQc5:Indoor Chemical and Pollutant Source Control

walk-off mats

We are about to submit for our desgin review and are wondering if exits used soley for egress and accesibility only can be exempt from the need for a walk-off mat. We are showing walk-off mats in our revolving doors and extending inside from the revolving doors to total 10ft, but we do not want to provide mats for the doors adjacent to the revolvers since there will be signage that reads, "please use revolving doors". This will drastically decrease the amount of use, therefore, we feel that these would not qualify as regularly used exterior entrances.

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Wed, 02/02/2011 - 00:55

It sounds like you are stretching it. I would take the regular doors with or without the sign directing me to use the revolving doors. Not wanting to do something that is a requirement is obviously not a convincing argument. If you could make an operational argument that, despite the number of doors required for egress by life safety codes, entering is always controlled by building management in a certain way (ie. "No Entry" on certain doors), then you might be onto something.
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Tristan Roberts
Representative
Vermont House of Representatives
LEEDuser Expert
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Wed, 02/02/2011 - 02:05

I see this often on buildings—signs directing you to use the revolving door, or just somehow people using the revolving door more often—but the secondary door still gets plenty of use. You'd have to truly limit use of this door to make this strategy work. Locking it might accomplish that, but that's counter to the need for egress and accessibility.

Wed, 02/02/2011 - 16:09

I agree with Tristan and Thorn- you';re going to have to provide entryway systems for these doors because they will get used on a regular basis.

Fri, 07/12/2013 - 17:40

How does one meet this criteria when a revolving door is being used? Do I need to locate a walk off mat outside of the revolving door assembly? Or try to design a grill system within the assembly?
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Tristan Roberts
Representative
Vermont House of Representatives
LEEDuser Expert
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Wed, 07/17/2013 - 15:08

Tommy, it's up to you as the designer. A grille system could be in the assembly, but it's more likely to have it before or after the door.

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