Units of Measurement

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UNITS OF MEASUREMENT

IrrigatePlus can compute using units in the International System (IS) or in the US System (US).

The unit system selected to be used for Flow determine whether the other magnitudes of the

project will be expressed in US Customary untis (US) or in metric units (IS). That is, when

selecting flow units in LPS, LPM, MLD, M

International System (IS). If, on the other hand, the selected flow units are in CFS, GPM, AFD,

MGD or IMGD, the US System will be used.

To change the flow units we can open the viewer located at the top

Options >> Hydraulics and check the units we want to use in the

It can also be changed by clicking on

Based on the units system defined in

for the length in the workspace.

To set the dimensions of the workspace, on the main menu we click on

In the Map Units field we select

working with US customary units (US).

UNITS OF MEASUREMENT

For more information check the manual of

www.irrigateplus.com

IrrigatePlus can compute using units in the International System (IS) or in the US System (US).

The unit system selected to be used for Flow determine whether the other magnitudes of the

project will be expressed in US Customary untis (US) or in metric units (IS). That is, when

selecting flow units in LPS, LPM, MLD, M3H or M3D, all other magnitudes w

International System (IS). If, on the other hand, the selected flow units are in CFS, GPM, AFD,

MGD or IMGD, the US System will be used.

To change the flow units we can open the viewer located at the top-right corner, go to

and check the units we want to use in the Flow Units

It can also be changed by clicking on Project >> Defaults in the main menu bar.

Based on the units system defined in Flow Units, we will need to select the same unit system

in the workspace.

To set the dimensions of the workspace, on the main menu we click on View >> Dimensions

field we select Meters if working with the International System (IS) or

working with US customary units (US).

For more information check the manual of Epanet

www.irrigateplus.com

IrrigatePlus can compute using units in the International System (IS) or in the US System (US).

The unit system selected to be used for Flow determine whether the other magnitudes of the

project will be expressed in US Customary untis (US) or in metric units (IS). That is, when

D, all other magnitudes will use the

International System (IS). If, on the other hand, the selected flow units are in CFS, GPM, AFD,

right corner, go to

field.

in the main menu bar.

, we will need to select the same unit system

View >> Dimensions.

if working with the International System (IS) or Feet if

UNITS OF MEASUREMENT

Note: It is recommended to set the coordinates for the workspace immediately after creating a

new project, since the units of measurement might differ from those used to measure the length

of pipes.

The following table shows the different units for e

PARAMETER

Flow

Demand

Diameter (Piping)

Diameter (Tanks)

Length

Elevation

Pressure

Piezometric Head

Speed

Precipitation rate

Volume

Power

Energy

Efficiency

Roughness

Coefficient

Friction Factor

Minor Head Loss

Coefficient

Emitter Coefficient

UNITS OF MEASUREMENT

For more information check the manual of

www.irrigateplus.com

It is recommended to set the coordinates for the workspace immediately after creating a

new project, since the units of measurement might differ from those used to measure the length

The following table shows the different units for each system of measurement.

INTERNATIONAL SYSTEM

(SI)

US SYSTEM

(US)

LPS (liters / sec)

LPM (liters / min)

MLD (mega-liters / day)

M3H (cubic meters / h)

M3D (cubic meters / day)

CFS (cubic feet / sec)

GPM (gallons / min)

MGD (millions

IMGD (Imperial MGD)

AFD (acres-feet / day)

(see Flow units) (see Flow units)

millimeters (mm) inches (in)

meters (m) feet (ft)

meters (m) feet (ft)

meters (m) feet (ft)

Meter of water column

(mca)

Pounds per square inch

(psi)

meters (m) feet (ft)

meters / second (m/s) feet / second (ft/s)

millimeters hour (mm/h) Inches per hour (inch/h)

cubic meters (m3) cubic feet (ft

kilowatts (kW) horsepower (HP)

kilowatts-hour (kWh) kilowatts-hour (kWh)

percentage (%) percentage (%)

millimeters

(Darcy-Weisbach)

dimensionless otherwise

millifeet

(Darcy-Weisbach)

dimensionless

dimensionless dimensionless

dimensionless dimensionless

Flow unit / (meters)exp Flow unit / (psi)

IS US

For more information check the manual of Epanet

www.irrigateplus.com

It is recommended to set the coordinates for the workspace immediately after creating a

new project, since the units of measurement might differ from those used to measure the length

ach system of measurement.

US SYSTEM

(US)

CFS (cubic feet / sec)

GPM (gallons / min)

MGD (millions gal / day)

IMGD (Imperial MGD)

feet / day)

(see Flow units)

inches (in)

feet (ft)

feet (ft)

feet (ft)

Pounds per square inch

(psi)

feet (ft)

feet / second (ft/s)

Inches per hour (inch/h)

cubic feet (ft3)

horsepower (HP)

hour (kWh)

percentage (%)

millifeet

Weisbach)

dimensionless otherwise

dimensionless

dimensionless

Flow unit / (psi)exp