HomeMy WebLinkAboutWater calculation Worksheet
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! INFOR+,ATION REQUIRED TO CALCULATE WATeR SERVICE SJZE '.-l
11. bemdnd of i~Uilding irr oallons per minute. WSFU's _11.!:....?:: - (GPM} JJ...:.....'t~.._..
I ( 1
IDlfference inelevaticm from main or external pJ'8ssure tank. to building control valve. (te<:i:t) ~__._ I
I
5/8- _,3/4"'6"-. 1" __.' 1-112" __,2" _, 3" __,4" __.,6" ._' I
(feet) .~2~'-'-. j
e::. C II
(psig) ...I
...._-=-.:..J
,..
/
....
3.
Size of the water meter. (When applicable)
Developed length from main or extemal pressure tank to building control valve.
l4.
5. I Low pressure at main in street or external pressure tank.
~A~:J~A TE ~:R SERVl~E PRESSURE lOSS
6.
7.
8,
9.
Low pressure at main in street or external pressure tank. (value of # 5 above)
Water service diameleris _LYL_. Material is r6',hk+y'J~____., Pressure Joss
per 100 ft:: ~_ psi. X S Z (decimal equiva ant of service length,l.e.; 65ft:::: .65)
(Subtract line 7. from line 6.)
subtotal
Oetennine pressure gain or loss due to elevation,
(multiPly the value of # 2 above by .434) value of ~a"
Available pressure after the bldg. control valve. (Subtract Of add iine B. Enter in ~B".) subtotal
CALC LATE TH~ PRESSURE AVAlLAbLEFQR UNIFORM LOSS {VALUe OF "A"}
_5".Q~..__
I. S'~
----
'i~f l/'-( _
Z. '0'1
'{SI 83'
8.
Available pressure after the bldg_ control valve. (from ~9" above)
Value of -8~ Y!J . ~3 ~
Value of ~C" 3 ~ I
c.
Pressure loss of water meter (when meter is required or installed)
(Subtract line C. from line B.) subtotal I.j Z . 73C.
D..
Pressure at controlling fIXture.
(CoritroJling fIXture is J::'1' FI16.r- B4-:h.. +~~
Value of "0"
}
(Subtract the value of D.) subtotal
E.
Difference in elevation between the building control valve
and the controlling fixture in feet I () X .434 psVfl
Value of "En
(Subtract the value of E.) subtotal
F.
Pressure loss due to water treatment devices, instantaneous
water heaters and backfJow preventers which serve the
$ntrolling fixture. Value of kF"
(Pressure loss due to }
(Subtract the value of F.) subtotal
G.
Developed length from building control valve to controlling
fixture in feet LIS' X 1.5 Value of ~G~
2-D
Z.Z.,73l;.
'.3'1
!.-'?.!.. 39~
-
l~. 396
, 7- S-
(Water distribution piping material is ~HcQ,(lt!:"J-Pe,c
(Divide by the value of G.) subtotal ._~ Z7~5
)
?, .1 P,.'so'. available roc uni/oem loss
$HU -';4 /91 Rilnll~
I
~AJ~ _:::
Multiply by __._190_._
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