General Program Information

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!sedts1.bmp!
Northeastern Isometric View
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Input Definitions

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Inputs Needed to Call the Sedimentation Tank Slopes Function

origin - a 3

...

by 1 matrix with

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x,y,z

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positions corresponding to the point where the pipe will be drawn
tank_dim - a 3 by 1 matrix with

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x,y,z

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positions specifying the inside dimensions of the sedimentation tank
angle - angle specifying the slope of the sedimentation tank walls

Inputs Defined within the Sedimentation Tank Slopes Function

origin =

• x : origin₀
• y : origin₁
• z : origin₂

mirror_point =

• x : origin₀
• y : origin₁ + tank.dim₁/2
• z : origin₂

tank_length = tank.dim₀

slope_width = tank.dim₁/2

slope_height = (tank.dim₁*tan(angle))/2

win1 =

• x = origin₀ - tank.dim₁/2
• y = origin₁
• z = origin₂

win2 =

• x = origin₀
• y = origin₁ + (tank.dim₁*tan(angle))/2
• z = origin₂

Note: the slope function draws the sloped sides in one sedimentation tank. The sedtank function copies the one tank as many times as needed in the design

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Notes

• All coordinates correspond to a top view.

Slopes are added to the sedimentation tanks in the form of wedges. By changing the input values of slope _width and slope _height the user can change the angle of the sedimentation slope.

Technical Program Outline

zoom1 zoom_win - zooms the workspace to a smaller focus area.on a window space directly around where the slope is to be drawn (as shown above - actual window size relative to slope that is to be drawn).
zoom1 <-- zoom_win(win1,win2)

win1 =

• x = origin₀ - tank.dim₁/2
• y = origin₁
• z = origin₂

win2 =

• x = origin₀
• y = origin₁ + (tank.dim₁*tan(angle))/2
• z = origin₂

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!sel slope triangle.JPG!
Top View
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pline1 - creates a onetwo-dimensional triangle.
pline1 <-- pline(pline1,pline2,pline3)

pline1 =

• x = origin₀
• y = origin₁
• z = origin₂

pline2 =

• x = origin₀
• y = origin₁

pline3 =

• x = origin₀ - slope_width
• y = origin₁
  
  

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!sed slope length.JPG!
Free Rotation used to show extrusion
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extrude1 - extrudes the triangle creating a three-dimensional wedge.
extrude1 <-- extrude(origin,tank_length)

origin =

• x : origin₀
• y : origin₁
• z : origin₂

tank_length = tank.dim₀

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[!1.bmp|width=200px!|AutoCAD Sedimentation Tank Slopes Program]
Northwest Isometric View, Before rotate3d1
[!2.bmp|width=400px!|AutoCAD Sedimentation Tank Slopes Program]
Northwest Isometric View, After rotate 3d1
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rotate3d1 - rotates the wedge 90 degrees around the x axis, using the origin to select the wedge, and the origin to specify where on the x axis to rotate.
rotate3d <-- rotate_3d(origin,origin,"x",90)

origin =

• x : origin₀
• y : origin₁
• z : origin₂

"x" - specifies which axis to rotate in

90 - specifies how many degrees to rotate

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[!3.bmp|width=400px!|AutoCAD Sedimentation Tank Slopes Program]
Northwest Isometric View, Before rotate3d1
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rotate3d2 - rotates the wedge 270 degrees around the z axis, using the origin to select the wedge, and the origin to specify where on the z axis to rotate. The wedge is now aligned with the lower right hand corner of the sedimentation tank.
rotate3d2 <-- rotate_3d(origin,origin,"z",270)

origin =

• x : origin₀
• y : origin₁
• z : origin₂

"z" - specifies which axis to rotate in

270 - specifies how many degrees to rotate

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[!4.bmp|width=400px!|AutoCAD Sedimentation Tank Slopes Program]
Northwest Isometric View, Before rotate3d1
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mirror3d1 - creates a mirror image of the wedge, using the origin to select the original wedge, and using the mirror_point to select the point to mirror the wedge about.

mirror3d1 <-- mirror3d(origin,mirror_point)

origin =

• x : origin₀
• y : origin₁
• z : origin₂

mirror_point =

• x : origin₀
• y : origin₁ + tank.dim₁/2
• z : origin₂
  
  

unionall - unites the two separate wedges to act as one unit

unionall <-- union_allA