See all forum discussions about NC-v4 EQp1
 Subscribe to new posts about NC-v4 EQp1 Post a new question aboutNC-v4 EQp1
See LEEDuser’s guidance on NC-v4 EQp1»
FAQs about EQp1 :

A building has fan-assisted ventilation and no mechanical cooling system. Does this qualify as natural ventilation?

What options are available to mechanically ventilated projects outside the U.S. to meet this prerequisite?

View answers »

Forum discussion

NC-v4 EQp1:Minimum indoor air quality performance

Exhaustion rates in WC

Dear all, I would like to know if it is mandatory to comply with minimum exhaust rates indicated in TTABLE 6-4 Minimum Exhaust Rates from ASHRAE 60.1 -2010. We think that the exhaust rate for each private toilet room (25 cfm/unit) is excessive for the areas we are considering and may cause discomfort in this area. Thank you in advance!

0
Post a reply

You rely on LEEDuser. Can we rely on you?

LEEDuser is supported by our premium members, not by advertisers.

Go premium for $15.95  »

Wed, 03/29/2017 - 16:25

You are required to "meet the minimum requirements of ASHRAE Standard 62.1–2010, Sections 4–7". That includes the exhaust requirements of Table 6-4.

Thu, 04/06/2017 - 09:00

Thank you Christopher. I am still having trouble to understand what rate to use. We are designing an office building with restrooms having 2 or more WC. So if using exhaustion in a non continuous system operation we would need a 50 cfm rate, considering this is a private use. Am I correct? We think this might be to excessive for the volume of the restroom, maybe we might need to adjust the height. Thank you

Thu, 04/20/2017 - 15:34

Public toilets are required to have continuous exhaust (Note E only applies to private toilet rooms). Although ASHRAE 62 does not explicitly define the terms, In an office building I would expect the toilet rooms to be public unless they are part of some individual's private office. A toilet room that serves an entire company, for example, would be "public" even if you couldn't come in off the street to use it. I can't imagine 50 CFM per fixture being excessive.

Add new comment

To post a comment, you need to register for a LEEDuser Basic membership (free) or login to your existing profile.