AutoCAD Sedimentation Tank Inlet Slopes Trapezoid Program

General Program Information

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

W_Sed - width of the sedimentation tank

l_orifice - length of the opening that will allow inlet flow

h_orifice - height of the opening that will allow inlet flow

b_orifice -

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 -

H_Trapezoid -

Inputs Defined within the Inlet Slope Trapezoid Function

verticalorigin =

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

verticaldim =

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

slopeorigin =

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

dim =

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

verticalorigin_dim = verticalorigin + verticaldim

box_dim = slopeorigin + dim

sideorigin =

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

sideoriginrotate =

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

orifice_origin =

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

orifice_dim =

• x: verticalorigin₀ + verticaldim₀/2 + l_orifice/2
• y: verticalorigin₁ + verticaldim₁
• z: verticalorigin₂ + h_orifice + (b_orifice*tan(littleslope))

nrow = l

ncol = n

dist = length/2

mirror_point1 =

• x: origin₀
• y: origin₁

mirror_point2 =

• 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

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

zoomwin <-- zoom_win(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
  
  

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

verticalbox <-- box(verticalorigin, verticalorigin_dim)

verticalorigin =

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

verticaldim =

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

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

bigslopebox <-- box(slopeorigin, box_dim)

slopeorigin =

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

box_dim = slopeorigin + dim

sideview - changes the view from topview to side view

sideview <-- viewrightside1

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

rotate <-- rotate_3d(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(orifice_origin, orifice_dim)

orifice_origin =

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

orifice_dim =

• x: verticalorigin₀ + verticaldim₀/2 + l_orifice/2
• y: verticalorigin₁ + verticaldim₁
• z: verticalorigin₂ + h_orifice + (b_orifice*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 - b_orifice - 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 - b_orifice - 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 <-- union_allA

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 mirror_point1 and mirror_point2.

mirror <-- mirror_all(mirror_point1, mirror_point2)

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 <--union_allA