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Basic Programming
Section 3
Head vs. Flow Two independent user–entered look up tables of up to 100 points each (See Ta bl e 2 2)
Manning Equation Rectangular channel, U-shaped channel, or Circular pipe (See Ta bl e 2 2)
Area Velocity Circular pipe, U-shaped channel, Trapezoidal channel, Rectangular channel (See Ta bl e 2 2)
Table 20 Weir Choices
Weir Description
Cipolletti Crest width is in. or cm (1–960 in. or 2.54– 2438 cm)
Contracted Rectangular Crest width is in. or cm (1–960 in. or 2.54– 2438 cm)
Non-Contracted Rectangular Crest Width is in. or cm (1–960 in. or 2.54– 2438 cm)
Thel-mar Size in inches. (6, 8, 10, 12 or 15 in.)
V-Notch Angle of notch in degrees (22.5 to 120°)
Compound V-Notch
Angle of notch in degrees (22.5–120°), notch depth in inches, rectangular width in inches
(0–120 in. or 0–304 cm), Contracted or non-contracted.
Table 21 Flume Choices
Flumes Description
Parshall Flume size in inches (1, 2, 3, 6, 9, 12, 18, 24, 30, 36, 48, 60, 72, 84, 96, 108, 120 or 144 in.)
Trapezoidal Flume size (60° S, 60° L, 60° XL, 45° 2", 45° 12")
H - Type Flume size in feet (0.5, 0.75, 1.0, 1.5, 2.0, 2.5, 3.0 or 4.5 ft)
HL - Type Flume size in feet 3.5’, 4.0'
HS -Type Flume size in feet (0.4, 0.6, 0.8 or 1.0 ft)
Leopold-Lagco Flume size in inches (4, 6, 8, 10, 12, 15, 18, 20, 21, 24, 27, 30, 36, 42, 48, 54, 60, 66 or 72 in.)
Palmer-Bowlus Flume size in inches (4, 6, 8, 10, 12, 15, 18, 21, 24, 27, 30, 36, 42, 48, 60 or 72 in.)
Table 22 Other Primary Devices
Device or Equation Description
Head Vs. Flow
(two head vs. flow
tables are provided)
Enter up to two tables of up to 100 user-defined head vs. flow points.
Head: 0– 99.99 in feet or centimeters
Flow: 0–99999.99 in any desired units
Manning Equation
Enter pipe diameter, slope & roughness coefficient.
Pipe dia.: 4–240 in. or 101–6096 cm
Percent Slope: 0.001–1.00 [1 unit per hundred units = 0.01 slope]
Example: 1 m of decline every 100 m = 0.01 slope.
Manning Roughness
Area Velocity
Circular Pipe: Enter pipe dia., 4–240 in.(10–610 cm)
Rectangular Channel: Enter width, 4–999.99 in. (10– 2540 cm).
Trapezoidal Channel: Enter width of channel bottom, width of channel top and channel depth, range
for all: 4–999.99 in. (10– 2540 cm)
U-Shaped Channel: Enter channel width, 4–999.99 in. (10–2540 cm)
Level vs. Area Table
(two level vs. area
tables are provided)
Enter up to two tables of up to 100 user-defined level vs. area points; Level: 0–999.9 in ft, in., m or cm
Area: 1–99999.99 in ft
2
, in.
2
, m
2
or cm
2
Nozzle Enter nozzle diameter
Table 19 Primary Device Choices (continued)
Primary Device Description