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Perimeter Polygon

A + B + C + D + E + F = Perimeter
Find perimeter or a missing side
Side A:
B:
C:
D:
E:
F:
Perimeter:

Circumference Circle

(π x D) or (π x R x 2) = Circumference
π = 3.14159265359...
Enter one length
Diameter:
Radius:
Circumference:

Area Rectangle

Length x Width = Area
Enter one or two values
Length:
Width:
Area:

Area Triangle

1/2 x Base x Height = Area
Enter any two values
Base:
Height:
Area:

Area Circle

(0.785 x D2) -or- (π x R2) = Area
Enter one value
Diameter:
Radius:
Area:

Volume Box

Length x Width x Height = Volume
Enter lengths or one volume
Length ft:
Width ft:
Height ft:
Volume cbft:
Volume cbme:
Gallons H2O:
Pounds H2O:
Liters H2O:

Volume V-Trough

1/2 x Width x Height x Length = Volume
Enter 3 lengths or 2 lengths + 1 volume
Width ft:
Height ft:
Length ft:
Volume cbft:
Volume cbme:
Gallons H2O:
Pounds H2O:
Liters H2O:

Volume Cylinder

(0.785 x D2 x H) -or- (π x R2 x H) = Volume
Enter lengths or one volume
Diameter ft:
-or- Radius ft:
Height ft:
Volume cbft:
Volume cbme:
Gallons H2O:
Pounds H2O:
Liters H2O:

Volume Sphere

4/3 x π x R3 = Volume
Enter one value
Diameter ft:
Radius ft:
Volume cbft:
Volume cbme:
Gallons H2O:
Pounds H2O:
Liters H2O:

gpm / MGD

gpm * 1440 / 1M = MGD
694 gpm = 1 MGD
Enter one value
gpm:
MGD:
ml/min:

Detention Time

Tank volume / Flow/time = Time
Enter any two values
Volume/flow in same units, gallons or MG
Time in same units, minutes or days
Tank Volume:
Flow/time:
DetentionTime:

Pressure / Head

Water psi * 2.31 = Head Feet
Enter one value
psi:
Head ft:

Circular Break Around Pipe


Calculation not yet available!

Pipe diamtr in:
Break wdth in:
Water PSI:
Hours leaking:
Loss GPM:
Loss Gallons:

Hole Break in Pipe


Calculation not yet available!

Hole diamtr in:
Water PSI:
Hours leaking:
Loss GPM:
Loss Gallons:

Rectangular Break Along Pipe


Calculation not yet available!

Break lngth in:
Break wdth in:
Water PSI:
Hours leaking:
Loss GPM:
Loss Gallons:

Water Loss Summary

Parts / Total Pumped = Accounted
Enter water volumes in same units
Total pumped:
Metered:
Unmetered:
Leaked:
Other:
Accounted:
% lost:
Amount lost:

Drawdown / Specific Capacity


Calculation not yet available!

Air line ft:
Psi pumpoff:
Psi pump5min:
GPM flow:
Static level:
Pumping level:
Drawdown:
GPM/ft SC:

Hydrant Flush / Pipe Flow


Calculation not yet available!

Diameter in:
Length in:
Height in:
GPM:
GPH:
GPD:

Percentage

Part / Whole * 100 = Percentage
Enter any two values
Part:
Whole:
Percentage %:

Concentration

0.001 ml/L * 1 SG = 1 mg/L = 1ppm
Enter one value + Specific Gravity
ml/L:
mg/L:
ppm:
gr/gal:
Percentage:
SG:

Davidsons Dosage

MGD * 8.34 * mg/L = Lbs/day
Enter any two values
MGD:
mg/L:
Lbs/Day:

Davidsons Loading

(MGD * 8.34 * mg/L) / sqft = Lbs/day/sqft
Enter any three values
MGD:
mg/L:
Area sqft:
Lbs/Day/sqft:

Concentrate to Concentrate

C1 * V1 = C2 * V2
Enter any three values
C1:
V1:
C2:
V2:

Chlorine Standard Cutting 334.0

Enter first three values
Target mg/L:
Stock mg/L:
Final mL:
Stock mL:
Injection mL:
Injection2 mL:
Total mL:
Injection #:
Tested mg/L:
-15% mg/L:
+15% mg/L:

Temperature

Fahrenheit - 32 * 5/9 = Celsius
Enter one value
Fahrenheit:
Celsius:

Weight

1 pound = 0.454 kilograms
Enter one value
Pounds:
Kilograms:
Gallons H2O:
Cubic ft H2O:
Cubic me H2O:

Distance

1 ft = 0.305 meters
Enter one value
Inches:
Feet:
Miles:
Millimeters:
Meters:
Kilometers:

Area

1 acre = 43,560 sqft
Enter one value
Sq feet:
Acres:
Sq miles:
Sq meters:
Hectares:
Sq Kilometers:

Volume

1 gallon = 3.78541 liters
Enter one value
Cubic feet:
Gallons H2O:
Pounds H2O:
Cubic meters:
Liters H2O:

Horsepower and Efficiency

hp=(gpm x hd ft x SG)/(3,960 x Eff%)
Enter two of gpm, head ft, horsepower
gpm:
head ft:
SG:
Efficiency %:
Horsepower:
Price $/KWH:
Hours:
Total Cost $:

F/M Ratio and Waste

FM = Inflow (BOD mg/l x 8.34 x MGD) /
Tank (MLVSS mg/L x 8.34 MG)
Enter all but one value
RASWAS only for FM Target to Waste GD
Infl BOD mg/l:
Infl MGD:
MLVSS mg/l:
Tank MG:
F/M Ratio:
RASWAS mg/l:
Waste GD:

Sludge Volume Index

SVI = (Settled ml/l x 1000) / (MLVSS mg/L)
Enter two of Settled, MLVSS, and SVI
Settled ml/l:
-or- Settled %:
MLVSS mg/l:
SVI:

Suspended Solids

mg/L=(gr x 1,000 mg/g x 1,000 ml/L)/ml
Enter any two values
Solids gr:
Sample ml:
SS mg/L:
ppm:
Percentage %:

Sludge Age and Waste

SA = (MLVSS mg/L x 8.34 x MG) /
     (ISS mg/L x 8.34 x MGD)
Enter all but one value
RASWAS only for Age Target to Waste GD
Infl SS mg/l:
Infl MGD:
MLVSS mg/l:
Tank MG:
Sludge Age:
RASWAS mg/l:
Waste GD:

Mean Cell Residence Time / Waste

SA=(MLVSS lbs)/(Efflu SS lbs + Wasted)
Enter all but one value
MLVSS mg/l:
Tank MG:
Efflu SS mg/l:
Efflu MGD:
MCRT:
RASWAS mg/l:
Waste GD:

Mixed Liquor Suspended Solids

Waste GD =
((Actual - Target) x MG) / RASWAS
Enter all but one value
T MLSS mg/l:
A MLSS mg/l:
Tank MG:
RASWAS mg/l:
Waste GD:

Circular Break Sewer Inflow


Calculation not yet available!

Pipe diamtr in:
Break wdth in:
Hours leaking:
Inflow GPM:
Inflow Gallons:

Hole Break Sewer Inflow


Calculation not yet available!

Hole diamtr in:
Hours leaking:
Inflow GPM:
Inflow Gallons:

Rectangular Break Sewer Inflow


Calculation not yet available!

Break lngth in:
Break wdth in:
Hours leaking:
Inflow GPM:
Inflow Gallons:

Rainfall Inflow Estimator

Enter drain sq ft or miles &
two of rain, percent, & inflow
Drain sq ft:
Drain sq ml:
Rainfall in:
% collected:
+Inflow MG:

NPDES Flow Exceedence

Enter all values below
Design MGD:
Avg Dry MGD:
Rain +MGD:
Other +MGD:
Exceed MGD:
Design %:

Process Efficiency

Enter amounts in same units
Influent:
Effluent:
Efficiency:

Chemical / Gallons

Enter gallons & ppm, sol% if needed
Water gal:
Needed ppm:
Chem lbs:
Chem sol %:
Chem sol SG:
Solution L:

Chemical / Cubic Tank

Enter dimensions & ppm, sol% if needed
Length ft:
Width ft:
Height ft:
Water gal:
Needed ppm:
Chem lbs:
Chem sol %:
Chem sol SG:
Solution L:

Chemical / V Trough Tank

Enter dimensions & ppm, sol% if needed
Length ft:
Width ft:
Height ft:
Water gal:
Needed ppm:
Chem lbs:
Chem sol %:
Chem sol SG:
Solution L:

Chemical / Cylinder Tank

Enter dimensions & ppm, sol% if needed
Diameter ft:
Height ft:
Water gal:
Needed ppm:
Chem lbs:
Chem sol %:
Chem sol SG:
Solution L:

Chemical Pump Size

Enter all values below
Water gpm:
Dosage ppm:
Solution %:
Solution SG:
Gallons/day:
Gallons/hr:
Gallons/min:
ML/minute:

Rate Study

Enter all ANNUAL values below
Operating Exp:
Loan Exp:
Capital Exp:
Reserve Exp:
TOTAL EXP:
TOTAL REV:
TOTAL P&L:
Customers:
1000g Pumped:
1000g Sold:
Water Loss %:
Min Bill Mon:
1st 1000g Mon:
Next 1000g: