HomeMy WebLinkAbout25SITE2 - Sewer & Water System Calculations 03-18-2025FULLER ENGINEERING & LAND SURVEYING, LLC
525 John Street · Second Floor
Bridgeport, CT 06604
(203) 333-9465 (203) 336-1769 FAX
FULLER ENGINEERING & LAND SURVEYING, LLC
525 JOHN STREET 2ND FLOOR BRIDGEPORT, CONNECTICUT 06604
PHONE (203)333-9465; FAX (203)336-1769
SANITARY SEWER
&
WATER SYSTEM CALCULATIONS
Project Name:
Madison Place
Luxury Townhouse Development
18 Powerhouse Road &
145 CT Route 32
Montville, CT
Information prepared for:
JNE Holdings, LLC
&
Town of Montville
Department of Public Works / Engineering Department
Dated: 18 March 2025
Atlantic Consulting & Engineering PAGE M1 -3
525 John Street • Second Floor
Bridgeport, CT 06604
(203) 336-4422 (203) 336-1769 FAX
Project: RESIDENTIAL DEVELOPMENT @ #145 ROUTE 32 Date: 03-18-2025
MONTVILLE, CT 0
SANITARY SEWER DESIGN FLOW TABLE (PROPOSED CONDITIONS)
QTY UNITS GPD/UNIT GPD/TOTAL
0 1 BEDROOM UNIT 150 -
0 2 BEDROOM UNIT 300 -
11 3 BEDROOM UNIT 450 4,950.00
ADF (AVE DAILY FLOW)TOTAL 4,950.00 GPD
ADF (AVE DAILY FLOW)TOTAL 0.005 MGD
DF = ADF X PEAKING FACTOR
DF = DESIGN FLOW
PF = PEAKING FACTOR PF = 4.0
DF =19,800.00 GPD
(65000 GPD = 0.1 CFS)0.0305 CFS
References: 1) CONNECTICUT PUBLIC HEALTH CODE
On-site Sewage Disposal Regulations and
Technical Standards for Subsurface Disposal Systems
Revised January 1, 2023
2) CONNECTICUT PUBLIC HEALTH CODE
Sections 19-13-B104a through 19-13-B104d
Atlantic Consulting & Engineering PAGE M1 -5
525 John Street • Second Floor
Bridgeport, CT 06604
(203) 336-4422 (203) 336-1769 FAX
Project: RESIDENTIAL DEVELOPMENT @ #145 ROUTE 32 Date: 03-18-2025
MONTVILLE, CT 0
CALCULATE THE CAPACITY OF SAN. SEWER PIPE
PIPE:PROPERTY TO MAIN
Pipe Diameter:6 inches PVC
MANNINGS EQUATION
R =____A___0.125
PW
Where R:Hydraulic radius (ft)
A:Cross-sectional area (ft2)0.1963495
PW:Wetted Perimeter (ft)1.5707963
V=k R2/3 S1/2 4.789041382
n
Where V:Mean Velocity (ft/s)
k:1.49 for U.S. customary units, or 1.0 for S.I. units
n:Manning's roughness value 0.011
R:Hydraulic Radius (ft)0.125
S:friction Slope (ft/ft)0.02
Q=VA 0.940326076
Where Q:Flow Rate(cfs)
V:Average velocity (ft/s)
Design Flow Calculated (SEE SAN SEWER DESIGN FLOW TABLE) =0.0305 CFS
The Q capacity of the pipe is higher than the design flow therefore pipe is sufficient
0.9403 CFS > 0.0305 CFS therefore OK
611,212 GPD > 19,800 GPD
Note: Existing units 1 and 7 are proposed to retain their ex-water sewer connections. However, they were included in this
calculations
Atlantic Consulting & Engineering PAGE M1 -5
525 John Street • Second Floor
Bridgeport, CT 06604
(203) 336-4422 (203) 336-1769 FAX
Project: RESIDENTIAL DEVELOPMENT @ #145 ROUTE 32 Date: 03-18-2025
MONTVILLE, CT
WATER DEMAND CALCULATIONS pg.1
No.Total
33.0 118.8
11.0 15.4
11.0 15.4
11.0 15.4
Hose Bibb 1.0 --1.0 3.0 3.0
168.0TOTAL
* BATHROOM GROUP. A group of fixtures, including or excluding a bidet, consisting of a water closet, lavatory, and bathtub or shower. Such fixtures are located together on the same floor level.
(2022 CT Building Code)
** Fire Service Provided by Existing Hydrant on Power House Rd
Atlantic Consulting & Engineering PAGE M1 -5
525 John Street • Second Floor
Bridgeport, CT 06604
(203) 336-4422 (203) 336-1769 FAX
Project: RESIDENTIAL DEVELOPMENT @ #145 ROUTE 32 Date: 03-18-2025
MONTVILLE, CT
WATER DEMAND CALCULATIONS pg.2
2 in Pipe recommended
* Based on (2022 CT Connecticut State Building Code)