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Central Angle in Hydraulic Designs of Sewers and S. W. Drain Sections Formulas

A central angle is an angle whose apex (vertex) is the center O of a circle and whose legs (sides) are radii intersecting the circle in two distinct points A and B. And is denoted by ∠central. Central Angle is usually measured using the Degree for Angle. Note that the value of Central Angle is always positive. Typically, the value of Central Angle lies in the range from 0 to 360.

Formulas to find Central Angle in Hydraulic Designs of Sewers and S. W. Drain Sections

fxCentral Angle given Proportionate Perimeter​Go
fxCentral Angle given Wetted Perimeter​Go

Hydraulic Designs of Sewers and S. W. Drain Sections formulas that make use of Central Angle

fxDiameter of pipe given Area of Cross-section​Go
fxHydraulic Mean Depth using Central Angle​Go
fxDiameter of Pipe using Hydraulic Mean Depth​Go
fxProportionate Area given Central Angle​Go
fxProportionate Depth given Central Angle​Go
fxProportionate Velocity given Central Angle​Go
fxProportionate Hydraulic Mean Depth given Central Angle​Go
fxProportionate Discharge given Central Angle​Go
fxProportionate Perimeter given Central Angle​Go
fxWetted Perimeter given Central Angle​Go
fxDiameter of Pipe given Wetted Perimeter​Go

List of variables in Hydraulic Designs of Sewers and S. W. Drain Sections formulas

fx Proportionate perimeter ​Go
fx Wetted Perimeter for Partial Flow ​Go
fx Diameter of Pipe ​Go

FAQ

What is the Central Angle?
A central angle is an angle whose apex (vertex) is the center O of a circle and whose legs (sides) are radii intersecting the circle in two distinct points A and B. Central Angle is usually measured using the Degree for Angle. Note that the value of Central Angle is always positive. Typically, the value of Central Angle lies in the range from 0 to 360.
Can the Central Angle be negative?
No, the Central Angle, measured in Angle cannot be negative.
What unit is used to measure Central Angle?
Central Angle is usually measured using the Degree[°] for Angle. Radian[°], Minute[°], Second[°] are the few other units in which Central Angle can be measured.
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