Backup Documents 04/24/2012 Item #11AN1 r - SO h-NOLA
Subwh -I�ed
Quincy Square Meter /Service Sizing
Collier County Spreadsheet Method
Per Worksheet -
Grand Total of Fixture Flow Value = 143 Fixture Units
Per Table for Estimating Demand -
143 Fixture Units = 55 GPM
Per Meter Table-
55 GPM = 1 -1/2" meter size
Florida Plumbing Code, Section 603 - Drain Fixture Units Method
Per Table 709.1 -
Total Fixture Units = 90 DFU (Quincy Square calc)
Total Fixture Units = 88 DFU (Collier County calc)
SEE TABLE 603.1
Per Table 603.1 for flush tank WCs- ION PAGE 2
86 -225 DFUs = 1-1/2" minimum water service size
Florida Plumbing Code, Section E103 - Water Supply Fixture Units Method
Per Table E103.3 Load Values Assigned to Fixtures -
Total Internal Fixture Units = 71.4 WSFU (Quincy Square calc)
Total Internal Fixture Units = 62.4 WSFU (Collier County calc)
Per Table E103.3 Table for Estimating Demand -
Total Internal Demand = 32.7 GPM (Quincy Square calc)
Total Internal Demand = 35,4 GPM (Collier County calc)
Must adjust for hose bibbs
Per Example on Page 3-
Total continuous flow fixtures = 5 GPM /hose bibb x 4 hose bibbs = 20 GPM
CONCLUSION AT THE
Total Demand = 52,7 GPM (Quincy Square calc) MEETING ON 12/9/12
Total Demand = 55.4 GPM (Collier County calc)
Provided by Collier
Per Meter Table- County Utilities tsc/
>50 GPM = 1 -1/2" meter size Engineer to Quincy 12/9/2011
Square on 12/9/11
PAGE 1 OF 3
1 I A cK
FLORIDA BUILDING CODE - PLUMBING TABLE 603.1 NOTE: UTILITIES ENGINEER
CALCULATION OF FIXTURE
TABLE 603.1 MINIMUM WATER SERVICE SIZE a UNITS IS 88, SEE PAGE 1. FBC
/ RECOMMENDS 1.5 INCH METER.
NO. OF
APPROX.
NO. OF
FIXTURE
PRESSURE
FIXTURE
UNITS
DIAMETER
RECOMM ED
LOSS METER
UNITS
FLUSH
OF WATER
METER E
+ 100' PIPE
FLUSH
TANK WCb
PIPE-
(inched
(psi)e
VALVE WCb
18
3,,
5
3 0
—
19 -55
1
1
30
-
-
1 ZZ
1
30
9
56 -58
11/4
1
30
—
-
4
1
30
10 -20
86 -225
88
11 /,
11/2
30
-
-
11/2
11/2
30
21 -77
226 -350
2
11/2
30
-
-
2
1%2
30
78 -175
351 -550
2
2
30
-
-
2
2
30
176 -315
551 -640
21/2
2
30
-
-
21/2
2
30
316 -392
641 -1340
3
3
22
-
-
3
3 122
1393-940
Chapter 6, Section 603, (2)(1)(a)
a. Table is applicable for both copper and plastic water piping.
Chapter 6, Section 603, (2)(1)(b)
b. See Table 709.1 for fixture unit values.
Chapter 6, Section 603, (2)(1)(c)
c. Minimum water service shall be 3/4" to control valve.
Chapter 6, Section 603, (2)(1)(d)
d. All secondary submeters and backflow assemblies shall be at least the same size
as the line in which they are installed.
Chapter 6, Section 603, (2)(1)(e)
e. Table based on minimum water main pressure of 50 psi.
PAGE 2OF3
I I I CR
Calculation of Water Flow Rates for Different Pipe Sizes
(Hazen Williams Formula - U.S. units)
Pipe Material: PVC Hazen Williams Coefficient, C =
Pressure drop over the pipe length, AP = 30 psi
Pipe
# of
Water
Water
Water Flow Rate in GPM
Flow Rate
Flow Rate
Additional
2 inch
Length
Bldgs
Main
Meter
Pipe Diameter in Inches
at Building
at Building
Capacity
ft
0.5
0.75
1
1.5
2 2.5
3
4
5
6
5
28
82
174
507
1080 1942
3137
6685
12023
19420
10
19
56
120
349
743 1336
2158
4598
8269
13357
15
16
45
96
280
597 1073
1733
3694
6643
10730
20
13
39
83
240
511 919
1484
3162
5687
9186
40
9
27
57
165
351 632
1021
2175
3911
6318
70
7
20
42
122
260 467
754
1608
2891
4670
100
6
16
35
101 1
214 385
622
1326
2385
3852
Hazen Williams Equation as use \ines spreadsheet:
Q = 0.442 C Dz.es(AP /L)e
Q is the water flow ra
D is the pipe diameter
L is the pipe length in ft
AP is the pressure difference
Table C -3 from Attachment C
Note: Maximum Flow Capacity of a 2 inch meter= 160
pipe length L in psi
and a 1.5 inch meter = 100 gpm
NET BENEFIT
Config.
# of
Water
Water
Residential
Flow Rate
Flow Rate
Additional
2 inch
Bldgs
Main
Meter
Service Line
at Building
at Building
Capacity
Meter
Service
Size
Size (meter
1.5
for a 2 inch
Realized
Capacity
Line Size
to bldg.)
PVC
PVC service
Above a 1.5
Benefit
(main to
\sei e
line
inch meter
meter)
B
13
2 inch
2 inch
1.5 inch
101 GPM
-- - - - - --
1 GPM
+1%
C1
1
2 inch
2 inch
2 inch
--- - - - - --
-- - - - - --
-- - - - - --
-- - - - - --
C2
1
2 inch
2 inch
1.5 inch
101 GPM
-- - - - - --
1 GPM
+1%
Config. B and C -2 have service line flow rates of 101 gpm based on calculation of water flow rates for different
pipe sizes, pressure drops, and length of pipe using the Hazen Williams Equation. A calculation of water flow
rate in a 1.5 inch PVC pipe with a pressure drop of 30 psi over 100 feet of PVC pipe is 101 gpm. See chart
above for a 1.5 inch pipe, 100 feet in length.
CONCLUSION: A 1.5" PIPE IS LIMITED TO 101 GMP, THEREFORE THE 2" METER
IS LIMITED TO 101 GMP AS WELL!!
PAGE 3OF3
W.J. JOHNSON & ASSOCIATES
Consulting Engineers
Summary
1. Is a 2 inch meter on a 1 -1/2 inch pipe line necessary? Answer: ,
because the 2 inch meter capacity of 160 GPM is wasted due to the 1-
1/2 inch pipe flow restriction of 101 GPM. See bottom of page 3.
2. Is a 2 inch meter on a 2 inch pipe line over -kill? Answer: It's akin
to a "Rube Goldberg" design. A 2 inch meter on a 2 inch pipe produces
160 GPM capacity, which is 104.6 GPM more that the Total Demand of
55.4 GPM; or 288% more. This is totally un- necessary. Designers are
trained, and have an ethical obligation, to make sure their design meet
minimum code requirements for public health and safety. On the other
hand, professional designers that deliberately over - design pipe sizes
and meter sizes that are unreasonably over and above by a factor of
288% of what is actually needed for the consumer is neither fair nor is
it ethical.
3. Does a 1 -1/2 inch meter meet Code requirements? Answer: YES See page 2.
4. Does it provide an optimal range of design flows that meets minimum
Code requirements as well as provide an optimum range of flow for
meter accuracy and functionality? YES. a 1 -1/2 inch meter capacity is
100 GPM, the Total Demand is 55.4 GPM. Therefore a 1 -1/2 meter has
100 - 55.4 = 44.6 GPM extra flow above Total Demand. 100 GPM is 81%
extra capacity built in to account for any fluctuations in higher demand
that might exceed 55.4 GPM without compromising the meter's
accuracy or functionality.
5. Does a 1 -1/2 meter on a 1 -1/2 inch service pipe under peak water use
(55.4 GPM) in all four units in each building provide enough water so
that you would never need more capacity?
, because the 55.4 GPM is based on all four units using water.
That's why it's called Total or Peak Demand. The 1 -1/2 inch meter can
handle up to 100 GMP, which is nearly 2 times the Total or Peak
_ Demand. 1 In order to reach a Total or Peak Demand of 55.4 GPM, all
four unit occupants would have to run all of their appliances, flush all
their toilets, open all faucets and outdoor hose bibs at the same time.
This type of event would be highly unlikely to say the least.
W. J. JOHNSON & ASSOC /A TES
Michael A. Etelamaki, P.E.
10961 Bonita Beach Road - Bonita Springs, Florida 34135 - 239 -596 -3200 - Fax: 239 -596 -3201
Quincy Square Building 1- First Permit
Permit Contact Information
574F-r= i (-P CC411�
!1P
Permit No. Status Permit Type Address Office
2005012574 COED BR2 " 7820 CLEMSON ST 1 0
Browse APpi Info I Site Info I Building I Assoc. Tables I Dates I Update Info I
Master No. 2005012574 Model F_ Model Description
COA 05 -1041 Contractor Est. Value 1 415500 P1G
FCC Code 104 RITHREE YOUR FAMILY
Address No. 359077 "
Type RUTH. SIGNER v
j Name SHARON FRADD
Contact Name DORSEY r Contact Phone (239)591 -4308
Job Description 12 STORY CBS 4 -PLEX 900 AM Job Phone (239)591 -4308
Name CENTEX HOMES
WWP F
Address 5801 PELICAN BAY BLVD S T E 600
City INAPLES
St FL Zip 134103
Certificate No 14937 " DBA Name ICENTEXHOMES License No ICGC031339 CANCEL
Comment Listing Report
CDPR1007 - Comment Listing Report
5709 FP IfA.
!1 A 0-�
REF TYPE REF KEY STATUS ORIGINAL USER ORIGINAL DATE /TIM
PT 2005012574 INFO OLKO_B 3/8/2005
LAST UPDATE USE LAST UPDATE DATE
COMMENT JAVIERMARTINEZ 1/9/2012
WATER & SEWER IMPACT FEES
12/18/11 HOA requested a new 1.5" meter (a downsize from existing 2"
meter) approved by Collier County
Public Utilities Division.... Javier
3/8/05
NEW 2" METER, OUST. REQUEST, 4 UNITS OVER 1501 SF
PER DORSEY, 591 -4308
WATER IMPACT FEES $10,640 [4X$2660= $10,640]
SEWER IMPACT FEES $12,040 [4X$3010 = $12,040]
METER TAP $851
REF TYPE REF KEY STATUS ORIGINAL USER ORIGINAL DATE /TIM
PT 2005012574 INFO KUCKO_J 8/19/2005
LAST UPDATE USE LAST UPDATE DATE
COMMENT KUCKO_J 8/19/2005
Time specific 100 @ 3:00 8/22/05 $40 David 253 -6761
REF TYPE REF KEY STATUS ORIGINAL USER ORIGINAL DATE /TIM
PT 2005012574 INFO KUCKO_J 8/25/2005
LAST UPDATE USE LAST UPDATE DATE
COMMENT KUCKO_J 8/25/2005
Time specific 100 @ 9:00 8/26/05 $40 Kerry 253 -0348
REF TYPE REF KEY STATUS ORIGINAL USER ORIGINAL DATE /TIM
PT 2005012574 INFO WARREN_W 9/21/2005
LAST UPDATE USE LAST UPDATE DATE
COMMENT WARREN_W 9/21/2005
stem wall change 9- 21 -05ww
REF TYPE REF KEY STATUS ORIGINAL USER ORIGINAL DATE /TIM
PT 2005012574 INFO ELIZABETOTERO 9/26/2005
LAST UPDATE USE LAST UPDATE DATE
COMMENT VELLOS_M 10/4/2005
rev 1 is pending
REF TYPE REF KEY STATUS
PT 2005012574 INFO
COMMENT
CHANGED ELEC /ROOF SUBS
ORIGINAL USER ORIGINAL DATE /TIM
DORISCOUTURE 9/28/2005
LAST UPDATE USE LAST UPDATE DATE
DORISCOUTURE 9/28/2005
REF TYPE REF KEY STATUS ORIGINAL USER ORIGINAL DATE /TIM
PT 2005012574 INFO LUNAAGUIRRE 9/30/2005
LAST UPDATE USE LAST UPDATE DATE
COMMENT LUNAAGUIRRE 9/30/2005
9/30/05 REC'D TEMP POWER AFFIDAVIT /KLA
REF TYPE REF KEY STATUS ORIGINAL USER ORIGINAL DATE /TIM
PT 2005012574 INFO ABLERKENNETH 10/3/2005
LAST UPDATE USE LAST UPDATE DATE
COMMENT ELIZABETOTERO 8/10/2006
C 0 HLOD UNTIL THERE IS AN APPROVED INSUBSTANTIAL CHANGE TO THE APPROVED
SDP #AR6372
Collier County Printed on 8:08:04AM 3/27/2012
CD -plus for Windows 95/98/NT Page 1 of 3
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