HomeMy WebLinkAbout612 E. PITKIN, CARRIAGE HOUSE - PDP - PDP150023 - SUBMITTAL DOCUMENTS - ROUND 1 - CITY STAFFPage 1 of 3 30-Sep-2015
To: City of Fort Collins Water/Wastewater
Date: Sept. 30, 2015
Re: Water & Wastewater services for residence at 612 E. Pitkin St.
To Whom It May Concern:
Calculations have been performed for the residence at the address noted above with regards to water
service and sewer service sizing. Integrated Mechanical can confirm that the existing 3/4" domestic water
service, and existing 4" sewer service are adequate for all new, and anticipated future plumbing fixtures
within the residence and carriage house. All calculations and fixture counts are based on the
requirements in the 2012 IRC, and are summarized below.
Domestic Cold Water:
Residence and carriage house fixture counts are listed below. Anticipated peak flow rate based on these
counts is 26 GPM, which is within acceptable limits of a 3/4" meter. Based on available pressure of 95
psi, the system has capacity to allow for pipe sizing of 10.3 PSI/100 feet within the building (see
calculation below), which is well within the acceptable range for industry pipe sizing standards.
TABLE P2903.6 WATER-SUPPLY FIXTURE-UNIT VALUES FOR VARIOUS PLUMBING FIXTURES AND FIXTURE GROUPS
TYPE OF FIXTURES OR GROUP OF FIXTURES
WATER-SUPPLY FIXTURE-UNIT VALUE (w.s.f.u.) QTY TOTAL
w.s.f.u.
Hot Cold Combined
Bathtub (with/without overhead shower head) 1.0 1.0 1.4 2 2.8
Clothes washer 1.0 1.0 1.4 1 1.4
Dishwasher 1.4 — 1.4
Full-bath group with bathtub (with/without shower head) or
shower stall 1.5 2.7 3.6
2 7.2
Half-bath group (water closet and lavatory) 0.5 2.5 2.6 2 5.2
Hose bibb (sillcock)a — 2.5 2.5
Kitchen group (dishwasher and sink with/without garbage
grinder) 1.9 1.0 2.5
2 5.0
Kitchen sink 1.0 1.0 1.4 1 1.4
Laundry group (clothes washer standpipe and laundry tub) 1.8 1.8 2.5 1 2.5
Laundry tub 1.0 1.0 1.4
Lavatory 0.5 0.5 0.7 7 4.9
Shower stall 1.0 1.0 1.4 2 2.8
Water closet (tank type) — 2.2 2.2 3 6.6
39.8
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Sanitary Sewer:
Residence and carriage house drainage fixture units are listed below. The anticipated peak load of 53
d.f.u. is well within the limits of a 4" sewer pipe.
TABLE P3004.1 DRAINAGE FIXTURE UNIT (d.f.u.) VALUES FOR VARIOUS PLUMBING FIXTURES
TYPE OF FIXTURE OR GROUP OF FIXTURES DRAINAGE FIXTURE
UNIT VALUE (d.f.u.)a
QTY TOTAL
d.f.u.
Bar sink 1
Bathtub (with or without shower head and/or whirlpool attachments) 2 2 4
Bidet 1
Clothes washer standpipe 2 1 2
Dishwasher 2
Floor drainb 0
Kitchen sink 2 1 2
Lavatory 1 7 7
Laundry tub 2
Shower stall 2 2 4
Water closet (1.6 gallons per flush) 3 3 9
Water closet (greater than 1.6 gallons per flush) 4
Full-bath group with bathtub (with 1.6 gallon per flush water closet, and with or without
shower head and/or whirlpool attachment on the bathtub or shower stall) 5
2 10
Full-bath group with bathtub (water closet greater than 1.6 gallon per flush, and with or
without shower head and/or whirlpool attachment on the bathtub or shower stall) 6
Half-bath group (1.6 gallon per flush water closet plus lavatory) 4 2 8
Half-bath group (water closet greater than 1.6 gallon per flush plus lavatory) 5
Kitchen group (dishwasher and sink with or without garbage grinder) 2 2 4
Laundry group (clothes washer standpipe and laundry tub) 3 1 3
53
Please call our office if there are any questions.
Respectfully,
Aaron Coy, P.E.