water wastewater calcs
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Water and Wastewater Calculation Spreadsheet Instructions
Spreadsheet Version: 2013.08
2. Rename and save this fle in your project older. It is read-only.
3. Light blue cells indicate user input.
4. ouse over cells !ith red triangles in the corners or tips and inormation.
". #dd columns and modiy this spreadsheet as necessary. It !as created to be customi$e
%. &or use !ith 'I(s Civil & Environmental Preliminary Design Guide for Undeveloped Sit
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Building User TypeDomestic
Drinking Cooking Bathing Toilets
BuildingCode
Users+Capita, per
Building
o o.Buildings
/ater Usage 0ates in !iters per Capita per Day +!pcd,
Utensil/ashing
4ouse/ashing
Clothes/ashing
otes1 Usage determined 6ased on local in.ormation or .rom the #7I Ci8il 3reliminary Design Guide2 The total usage rate is calculated 6y multiplying the per capita usage rate 6y the total num6er o. users% /atewater production is e9ual to total water usage: which assumes that in.low ; in.iltration replaces a
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WATER STORAGE
"torage 0e9uired days < - !
Tank "hape
Tank Battery (Group of Tanks) Single Tank Size
Tank "ide m 'DI($)* m
Other Tank "ide m m
/ater 4eight m m
Tank 5ree6oard m m
Total Tank 4eight ))) m ))) m
Tank (olume ) ! 'DI($)* !
um6er o. Tanks 'DI($)*
Tank "pacing m
um6er o. Tank 0ows
um o. Tank Columns
0e9uired 5ootprint )))
APPROX. HEIGHT OF STORAGE
3ressure 0e9uired k3a < 0.00 m he!h"
m2
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Date=
Time=
!ocation=
Tme #e$"h "% Wa"e& ' #e$"h Pe&( Ra"e
+min, +cm, +mm, +mm, +mm$min, +min$mm, +min$2> mm,
))) )) -- -- -- --
)) )) 'DI($)* 'DI($)* 'DI($)*)) )) 'DI($)* 'DI($)* 'DI($)*
)) )) 'DI($)* 'DI($)* 'DI($)*
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)) )) 'DI($)* 'DI($)* 'DI($)*
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Re)*+",
'$A
S%+ Cha&a("e&a"%
Depth "oil Type otes
Application Rate +$d / m
1
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Building Total Users
"eptic Tank Code Users per Tank
) ) - - --
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) ) - - -
-
-
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) ) - - - -
Design Constants
< ?ears 6etween Desludging=
5 < "ludge Digestion 0ate 5actor=
"eptic Tank 0ecei8es=
) !$person$yr
0e9uired 5ree6oard= meters
S+*d!e #!e)"% Ra"e Fa("%& F1
1 1%
2 1
% 1
1
> 1
or more 1
BuildingCode
Total Graywater+!pd,
Total Blackwater+!pd, !i9uid /astewater
per Tank +!pd, A, !i9uid 0etention
(olume +!,B, "cum ; "tora
Capacity +!,
0ate o. "ludge and "cum Accumulation=
um6er o. years6etween desludging
5 i. am6ient temp 2)degrees C throughout the
year
5 i. am6ient temp degrees C throughou
year
otes1 "eptic tank desi .or li9uid retentio
I. Q E :))) I. 1:))) !$dI. Q 1:))
where And the .ollowin where
P < um6erN < um6erF < "ludge dS < 0ate o.
2 7inimum width % Total length < 2 Depth o. water o
a6o8e water su
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Building Total Users
) ) - - -
) ) - - -
) ) - - -
BuildingCode
Total Graywater+!pd,
Total Blackwater+!pd,
"ystem Description
Re("a!*+a& P
Le!"h Wd"h #e$"h
4#I5/06
4#I5/06
4#I5/06
Design Constants
/astewater Application 0ate=
/astewater to !oad"ystem +!pd,
I7+"&a"8eA&ea m1
!pd$m2
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Building Total Users
) ) - - -
) ) - - -
) ) - - -
BuildingCode
Total Graywater+!pd,
Total Blackwater+!pd,
dary Treatment ; Disposal Options
S%a2 Bed #me)%) m1
In.iltrati8e Depth
4#I5/06 4#I5/06
4#I5/06 4#I5/06
4#I5/06 4#I5/06
9e(e))a&y Fe+dLe!"h
3ipe"pacing
"houlder/idth
9*m:e& %7 P$eLe!"h)
3roposed Trench/idth
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5IP LATRI9E #ESIG9
Diameter o. the 6ottom o. the pit +m,
Sludge Depth ()
!nfiltration Depth ()"
Pit Depth (m) = Sludge Depth + Infiltration Depth + 0.5m
S+*d!e A((*m*+a"% Ra"e
/astes retained in water where degrada6le anal cleaning materials are used
/astes retained in water where non-degrada6le anal cleaning materials are used
/aste retained in dry conditions where degrada6le anal cleaning materials are used
/astes reatained in dry conditions where non-degrada6le anal cleaning materials are used
9 +e..ecti8e li.e o. the pit in years,
P +a8g num6er o. people using the pit daily,
R +estimated sludge accumulation rate .or a single person in m%
$year, (effe#ti$e $olue of the pit (% ) " N & P & '
; +water used .or .lushing in liters per day per person,
A +application rate in lpd$m2,
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0
!DI"0#
!DI"0#
4#I5/06
R
0
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User GroupDomestic
Drinking Cooking Bathing Toilets Other
(illageame
um6er o.Groups
Users perGroup
/ater Usage 0ates in !iters per Capita per Day +!pcd,1
Utensil/ashing
4ouse/ashing
Clothes/ashing
otes1 Usage determined 6ased on local in.ormation or .rom the #7I Ci8il 3reliminary Design Guide +Appendi A: Indian "Usage,2 The total usage rate is calculated 6y multiplying the per capita usage rate 6y the total num6er o. users +ie users