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General Program Information

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[!1.bmp|width=280px!|AutoCAD Sedimentation Tank Inlet Slopes Trapezoid Program][!1b.bmp|width=380px!|AutoCAD Sedimentation Tank Inlet Slopes Trapezoid Program]
Southwest Isometric View
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Input Definitions

Inputs Needed to Call the Inlet Slope Trapezoid Function

origin - A 3*1 matrix with x,y,z positions corresponding to the point where the inlet slope will be drawn.

Length - length of the slopes, generally the length of the sedimentation tank

WSed - width of the sedimentation tank

lorifice - length of the opening that will allow inlet flow

horifice - height of the opening that will allow inlet flow

borifice -

thick - thickness of the slopes

n - number of orifices and sections, one section contains one orifice

bigslope - slope of the inlet in degrees

little slope -

HTrapezoid -

Inputs Defined within the Inlet Slope Trapezoid Function

verticalorigin =

  • x: origin0
  • y: origin1 - borifice - thick
  • z: origin2

verticaldim =

  • x: length/n
  • y: thick
  • z: HTrapezoid + thick*cos(bigslope)

slopeorigin =

  • x: origin0
  • y: origin1 - borifice - thick
  • z: origin2 + HTrapezoid + thick*cos(bigslope)

dim =

  • x: length/n
  • y: thick
  • z: (WSed/2 -borifice)*(1/cos(bigslope))

verticalorigindim = verticalorigin + verticaldim

boxdim = slopeorigin + dim

sideorigin =

  • x: slopeorigin1 + thick
  • y: slopeorigin2 + dim2
  • z: slopeorigin0

sideoriginrotate =

  • x: slopeorigin1 + thick
  • y: slopeorigin2
  • z: slopeorigin0

orificeorigin =

  • x: verticalorigin0 + verticaldim0/2 - lorifice/2
  • y: verticalorigin1
  • z: verticalorigin2

orificedim =

  • x: verticalorigin0 + verticaldim0/2 + lorifice/2
  • y: verticalorigin1 + verticaldim1
  • z: verticalorigin2 + horifice + (borifice*tan(littleslope))

nrow = l

ncol = n

dist = length/2

mirrorpoint1 =

  • x: origin0
  • y: origin1

mirrorpoint2 =

  • x: origin0 + zc
  • y: origin1

win1 =

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

win2 =

  • x: origin0 + dim0 - zc
  • y: origin1 + dim1 - zc
  • z: origin2 + dim2 - zc

Technical Program Outline

viewtop - sets the workspace so that the user is viewing the top of the object.

viewtop <-- viewtop1

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zoomwin - zooms on a window space directly around where the inlet slope is to be drawn.

zoomwin <-- zoomwin(win1, win2)

win1 =

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

win2 =

  • x: origin0 + dim0 - zc
  • y: origin1 + dim1 - zc
  • z: origin2 + dim2 - zc

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verticalbox - draws a box using verticalorigin to select the first corner, and verticalorigindim to select the opposite corner. This box will serve as the vertical part of the inlet slopes.

verticalbox <-- box(verticalorigin, verticalorigindim)

verticalorigin =

  • x: origin0
  • y: origin1 - borifice - thick
  • z: origin2

verticaldim =

  • x: length/n
  • y: thick
  • z: HTrapezoid + thick*cos(bigslope)

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bigslopebox - draws on top of the vertical box, using slopeorigin to select the first corner, and boxdim to select the opposite corner. This box will serve as the slope of the inlet slopes.

bigslopebox <-- box(slopeorigin, boxdim)

slopeorigin =

  • x: origin0
  • y: origin1 - borifice - thick
  • z: origin2 + HTrapezoid + thick*cos(bigslope)

boxdim = slopeorigin + dim



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[!5a.bmp|width=300px!|AutoCAD Sedimentation Tank Inlet Slopes Trapezoid Program][!5.bmp|width=60px!|AutoCAD Sedimentation Tank Inlet Slopes Trapezoid Program]
Before sideview
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sideview - changes the view from topview to side view

sideview <-- viewrightside1



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rotate - rotates the bigslopebox by 90 - biglope*(180/pi) degrees along the z-axis.

rotate <-- rotate3d(sideorigin, sideoriginrotate, "z", 90 - bigslope*(180/pi))

sideorigin =

  • x: slopeorigin1 + thick
  • y: slopeorigin2 + dim2
  • z: slopeorigin0

sideoriginrotate =

  • x: slopeorigin1 + thick
  • y: slopeorigin2
  • z: slopeorigin0

"z" =

90 - bigslope*(180/pi) =

orificebox -

orificebox <-- box(orificeorigin, orificedim)

orificeorigin =

  • x: verticalorigin0 + verticaldim0/2 - lorifice/2
  • y: verticalorigin1
  • z: verticalorigin2

orificedim =

  • x: verticalorigin0 + verticaldim0/2 + lorifice/2
  • y: verticalorigin1 + verticaldim1
  • z: verticalorigin2 + horifice + (borifice*tan(littleslope))

subtractorifice - subtracts orificebox to create an orifice, using the verticalorigin to select orificebox as the object to be subtracted.
subtractorifice <-- subtractDall(verticalorigin)

verticalorigin =

  • x: origin0
  • y: origin1 - borifice - thick
  • z: origin2

array - creates an array to replicate the slab n times, by using the origin to select the slab as the item to put into an array, then specifies that a rectangular array with one row and "n" columns with a displacement of "dist" is to be used to place the slabs one next to the other.

array <-- arrayB(verticalorigin, nrow, ncol, dist)

verticalorigin =

  • x: origin0
  • y: origin1 - borifice - thick
  • z: origin2

nrow = l

ncol = n

dist = length/2

union - Unites all the individual components of the inlet slope to act as a single unit

union <-- unionallA

mirror - replicates the original inlet slope drawn by selecting the original inlet slope using the origin, then reflecting it over a mirror line created using mirrorpoint1 and mirrorpoint2.

mirror <-- mirrorall(mirrorpoint1, mirrorpoint2)

win1 =

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

win2 =

  • x: origin0 + dim0 - zc
  • y: origin1 + dim1 - zc
  • z: origin2 + dim2 - zc

bigunion -

bigunion <--unionallA