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General Information

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Northwest Isometric



Input Definitions

Inputs Needed to Call the Sludge Pipe Function

sludgepipeorigin - a 3 by 1 matrix with x,y,z positions corresponding to the point where the manifold will be drawn
NDsludge - the nominal diameter of the sludge waste pipe - from this we can find the actual inner diameter and actual outer diameter of the pipe based on the schedule of pipe being used.
tanklength - the length of the tank
orificerad - the radius of the orifice hole
orificedist - the distance between successive orifices
ENPipeSpec - an enumerated pipe schedule which specifies a number which corresponds to a pipe schedule that states the amount of water pressure the pipe can handle before it fails. The pipe schedule affects the inner and outer diameter of the pipe.

Inputs Found from Pipe Database Function

sludepipeinr - the radius of the inner cylinder defined by inner(NDsludge,ENPipeSpec)/2
sludgepipeoutr - the radius of the outer cylinder defined by outerradius(NDsludge)

Inputs Defined Within the Sludge Pipe Function

p1 =

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

p2 =

  • x : sludgepipe.origin0
  • y : sludgepipe.origin1
  • z : sludgepipe.origin2 + tanklength - orificedist

p3 =

  • x : sludgepipe.origin0
  • y : sludgepipe.origin1 + sludgepipeoutr + zc
  • z : sludgepipe.origin2 + tanklength - orificdist

p4 =

  • x : sludgepipe.origin1 + sludgepipeoutr + zc
  • y : sludgepipe.origin2 + tanklength - orificedist
  • z : sludgepipe.origin0

p5 =

  • x : sludgepipe.origin0
  • y : sludgepipe.origin1 - sludgepipeoutr

p6 =

  • x : sludgepipe.origin0 + radhole + zc
  • y : sludgepipe.origin1 + sludgepipeoutr + 2*zc

p7 =

  • x : sludgepipe.origin0 - radhole - zc
  • y : sludgepipe.origin1 - zc

ND = NDsludge

R1 = sludgepipeoutr

R2 = sludgepipeinr

R3 = radhole

L = tanklength

n1 = floor( tanklength / orificedist )

n2 = 1

d1 = orificedist

win1 =

  • x : sludgepipe.origin0 - sludgepipeoutr
  • y : sludgepipe.origin1 - sludgepipeoutr
  • z : sludgepipe.origin2

win2 =

  • x : sludgepipe.origin0 + sludgepipeoutr
  • y : sludgepipe.origin1 + sludgepipeoutr + zc
  • z : sludgepipe.origin2

EN = ENPipeSpec

Note: zc corresponds to the zoom constant used within AutoCAD and created in the basics file that is referenced by the pipe program.

Technical Program Outline

Note: All coordinates are referenced in top view in the program unless otherwise specified

pipe1 - using the pipe function draws a pipe (from the pipe program) with no zoom

zoomwin - zooms on a window space

cylinder3 - is to draw a cylinder for orifice purpose

viewrightside - change view to viewrightside

array1 - draw starting at point p1, n1 -- as many rows as the tank length/orifice dist, n2 - 1 and provide orifice distance as the next draw point for the cylinder

subtract2 - subtract unneeded portion of the cylinders

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