I am currently working on a project which has 6 retail outlets in a very big building for the users in that building. Do i need to maintain 0.5 cfm/sqft requirement and the pressure requirements for these retail units?
Thanks
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Jean Marais
b.i.g. Bechtold DesignBuilder Expert832 thumbs up
March 6, 2017 - 12:55 am
Please elaborate on the function of "retail units". What is this volume being used for? What equipment is installed there? How is it seperated from the other spaces (ceiling, walls, floor, door, etc.)
VEL MUTHU
March 6, 2017 - 3:54 am
To be precise we do not know what kind of retail units these are. This is a public building like a train station. Our client informed us that 4 Retail units will be food and beverages and the rest 2 will be for clothing. Since, the tenant are not finalised, we do not have any idea on how the furniture setup or the equipment size will be.
I want to consider the worst case scenario to go for this credit.
Also,
1. since these retail units will be food and beverage units, we definitely need to consider negative pressure. Is my understanding correct?
2. Since we do not know the retailers and the interior arrangements, how to show compliance as this building is NC registered and these spaces are like a core and shell space.
Thanks for your time
Vel
Jean Marais
b.i.g. Bechtold DesignBuilder Expert832 thumbs up
March 6, 2017 - 4:08 am
Train stations are difficult to certify. It's better suited to LEED CI. Sometimes there are cabins on the platform that even do baking, but the platforms are directly connected to outdoors and therefor outside the thermal boundry. These small cubicals never have vesitbules, which I think are strictly required, unless there is an exception for such small volumes? The service counter is open anyway, which is self defeating. The fatty exhaust fumes are simply expelled onto the platform.,,which is technically outdoors (I hate them...always terrible air here...thankfully I'm only there for short periods, but the poor people working there are not in a good place).
Very modern trainstations have vestibules at the main enterances, so you could redefine the thermal boundry to house the platforms, then at least all the retail don't need 'em cause they're already inside, but then these cabins may be problematic.
I'd love to hear how others are solving this.
VEL MUTHU
March 6, 2017 - 7:08 am
Jean,
Thank you for your response. And yes, the whole station is going for certification under NC. There will entry way matts and these retail units are inside the station for the station users.
So, I believe, Following the requirement of 0.5cfm/sqft and negative pressure with closed doors and deck to deck partitions shall meet the requirement. Also there is no recirculation and mixing with the other zones return air.
I believe, this will meet the requirement (Please comment)
Vel