Hello. I have a mixed use building and my fixture count, per each of the three occupancy types, seems to come up a little high. Just using real world experience here...I just can't picture this men's room needing (4) water closets. This is preliminary and my figures are rough...just trying to get an approximate count so I can allot the appropriate space for the restrooms.
As an example...
I have a Business Occupancy totaling 56 persons. Divide that by 2 and we get 28 persons of each sex. Thus I need (2) water closets and (1) lavatories for each sex for a total fixture count of (4) water closets and (2) lavatories.
Factory Occupancy totals 12 persons / 2 = 6 persons each sex. Thus (1) water closet and (1) lav for each sex for a total fixture count of (2) water closets and (2) lavs.
Finally, there is Storage area. 4 persons / 2 = 2 persons each sex. Thus (1) water closet and (1) lav for each sex for a total fixture count of (2) water closets and (2) lavs.
My grand total here is (8) water closets and (6) lavs. Or for each sex, (4) water closets and (4) lavs...Just seems slightly high to me. As I look at 7.21.10 I wonder if this could apply as a way to reduce the fixture count. "Where the number of persons for each sex is less than 100% of a particular group (Yes, this is the case since I am using 50% of the total to apply to each sex) the number of fixtures required for that group may be reduced by the fraction of the persons in that group" (wondering if I can divide by 50% since that is the fraction, or percentage as I am using it, I have reduced the total persons of each sex.). Is this the intent of 7.21.10?
I have searched the forums....found some good info on calculation fixture counts, but nothing regarding the intention of 7.21.10.
As always, your experience is much appreciated. Thank you,
Jay
As an example...
I have a Business Occupancy totaling 56 persons. Divide that by 2 and we get 28 persons of each sex. Thus I need (2) water closets and (1) lavatories for each sex for a total fixture count of (4) water closets and (2) lavatories.
Factory Occupancy totals 12 persons / 2 = 6 persons each sex. Thus (1) water closet and (1) lav for each sex for a total fixture count of (2) water closets and (2) lavs.
Finally, there is Storage area. 4 persons / 2 = 2 persons each sex. Thus (1) water closet and (1) lav for each sex for a total fixture count of (2) water closets and (2) lavs.
My grand total here is (8) water closets and (6) lavs. Or for each sex, (4) water closets and (4) lavs...Just seems slightly high to me. As I look at 7.21.10 I wonder if this could apply as a way to reduce the fixture count. "Where the number of persons for each sex is less than 100% of a particular group (Yes, this is the case since I am using 50% of the total to apply to each sex) the number of fixtures required for that group may be reduced by the fraction of the persons in that group" (wondering if I can divide by 50% since that is the fraction, or percentage as I am using it, I have reduced the total persons of each sex.). Is this the intent of 7.21.10?
I have searched the forums....found some good info on calculation fixture counts, but nothing regarding the intention of 7.21.10.
As always, your experience is much appreciated. Thank you,
Jay