General Program Information

Input Definitions

• origin is a 3,1 matrix with the x,y,z values of the center point of the outlet of the first sedimentation tank
• width _sed is the distance between the outlets of the sedimentation tanks or the width of the sedimentation tanks from the center line of the wall on either side of a tank
• lvltank _dim is a 3,1 matrix with the x,y,z dimensions of the tank
• Δ x is the distance in the x direction in a top view from the outlet of the first sedimentation tank (or the origin of the first pipe) to the outside wall of the leveling tank
• Δ y is the distance in the y direction in a top view from the outlet of the first sedimentation tank (or the origin of the first pipe) to the outside wall of the leveling tank
• Δ z is the distance in the z direction in a top view from the outlet of the first sedimentation tank (or the origin of the first pipe) to the bottom wall of the platform
• lvltank _thick is the thickness of the walls of the leveling tank
• thick _platform is the thickness of the platform
• R1 is the inner radius of the pipes leading to the leveling tank
• R _main is the inner radius of the effluent pipe
• H _main is the height of the effluent pipe (or the water level in the leveling tank)
• n is the number of sedimentation tanks
• disp is the displacement of the center of the pipes coming up into the leveling tanks from the inside wall of the tank

Notes

• All coordinates correspond to a top view.
• The floor of the leveling tank is at the same elevation as the top of the platform

Pipe Labeling

Step by Step Description

The Sed _eff program is composed of three scripts. The program will run Sedeff _script1 when n is 3, Sedeff _script2 when n is 4 and Sedeff _script3 when n is 5. Because the most common number of sedimentation tanks is three, the output of Sedeff _script1 will be described below.

Some points and values which will be used several times in the script are defined outside of the script so as to make it cleaner. These variables will be pseudo inputs for Sedeff _script1. They are listed below and will be described in greater detail further down.

• pipe2 _origin, pipe3 _origin, pipe4 _origin, pipe5 _origin, pipe6 _origin, elbow1 _origin, pipe7 _origin, tank _origin, main _origin, origin, lvltank _dim, Δx, Δy, Δz, tank _thick, thick _platform, width _sed, R1, R _main, H _main, n, disp

layer1 - Creates a 'lvlpipe' layer for all of the pipes in the program

Pipe1 - Creates a pipe with an origin at the variable "origin". See Pipe Help for details on the pipe function.

Pipe1 Length = Δx + thick _tank + offset - ElbowRadius
Notes:

• Pipe1 Length is not a variable, the values are inputed directly into the pipe function
• offset is a function which divides the x dimension of the level tank by the number of sedimentation tanks, so as to evenly space the inlet pipes to the tank.
• ElbowRadius is the radius of curvature of an elbow. In the script it is given as a function of the inner radius. This function is defined in the Pipe Database program

Rotate1 - Pipe 1 is rotated so that from a top view it is oriented in the west to east direction

Pipe2

pipe2 _origin =

• x: x,origin - Pipe1 Length
• y: y,origin + ElbowRadius
• z: z,origin

Pipe2 Length = Δy - 2ElbowRadius + thick _tank + disp

Rotate2 - Pipe 2 is rotated so it is oriented north to south in top view