General Program Information

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Southeast Isometric View
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Input Definitions

Inputs Needed to Call the Cross Function

origin - a 3*1 matrix with x,y,z positions corresponding to the point where the tee will be drawn.
ND - The nominal diameter of the pipe. This value along with the pipe schedule is used to determine other actual dimensions of the elbow
EN - The enumerated pipe schedule type. Each schedule of pipe is represented by a specific number within our code.

Inputs Defined within the Cross Database

R1 - The inner radius of the main pipe, defined by outerradius(ND)
R2 - The outer radius of the main pipe, defined by innerD(ND,ED)/2
R3 - The outer radius of the sockets of the tee, defined by ConRadius(ND)
L - The length of the main pipe of the tee, defined by ShortTeeLength(ND)*2
H - The depth of the sockets of the tee, defined by SocketDepth(ND)

Inputs Defined within the Cross Function

p1 =

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

p17 =

• x : origin₀
• y : origin₂ + R2
• z : origin₁

p18 =

• x : origin₀
• y : origin₂

p19 =

• x : origin₀
• y : origin₂ + zc

p20 =

• x : origin₀ - L/2
• y : origin₁
• z : origin₂ + L/2

p21 =

• x : origin₀ + L/2
• y : origin₁
• z : origin₂ + L/2

p22 =

• x : origin₀ - L/4
• y : origin₁ - R1
• z : origin₂

p23 =

• x : origin₀ + L/4
• y : origin₁ - R1
• z : origin₂

p24 =

• x : origin₀
• y : origin₁
• z : origin₂ + L/2 - R3

ND = The nominal diameter of the pipe.
R1 = the inner radius of the main pipe.
R2 = the outer radius of the main pipe.
R3 = the outer radius of the four sockets of the tee.
L = the length of the main pipes of the tee.
H = the length of the four sockets of the tee.

win1 =

• x : origin₀ - (L/2 + H)
• y : origin₁ - R3
• z : origin₂

win2 =

• x : origin₀ + (L/2 + H)
• y : origin₁ + R3
• z : origin₂

EN = The pipe schedule

Technical Program Outline

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The Cross program is built on the Tee Program.

Tee1 - builds a tee with origin p1, nominal diameter ND, and pipe schedule EN.

Tee1 <--Tee(p1,ND,EN)

p1 = origin

ND = The nominal diameter of the pipe.

EN = The pipe schedule

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Before mirror3
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After mirror3
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mirror3 - mirrors the tee around the centerline of the main pipe, using p17 to select the tee, then reflecting it over a mirror line created using p18 and p19 to give the slope and direction of the mirror line.

mirror3 <-- mirrorA(p17,p18,p19)

p17 =

• x : origin₀
• y : origin₂ + R2
• z : origin₁

p18 =

• x : origin₀
• y : origin₂

p19 =

• x : origin₀
• y : origin₂ + zc

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cylinder7 - creates a cylinder of radius R2 within the cross.

cylinder7 <-- cylinderB(p20,R2,p21)

p20 =

• x : origin₀ - L/2
• y : origin₁
• z : origin₂ + L/2

R2 - the outer radius of the main pipe.

p21 =

• x : origin₀ + L/2
• y : origin₁
• z : origin₂ + L/2

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Free Rotation used to show the cross is now hollow
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subtract4 - subtracts the cylinder from the cross creating a hollow pipe, by selecting the 2 separate halves of the cross as the objects to be subtracted from by using p22 and p23, and selecting cylinder7 as the object to be subtracted by using p24. During the process of subtraction, the two separate pieces are unioned to act as one unit.

subtract4 <-- subtractB(p22,p23,p24)

p22 =

• x : origin₀ - L/4
• y : origin₁ - R1
• z : origin₂

p23 =

• x : origin₀ + L/4
• y : origin₁ - R1
• z : origin₂

p24 =

• x : origin₀
• y : origin₁
• z : origin₂ + L/2 - R3

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viewfront2 - sets the workspace so that the user is viewing the object from the front.

viewfront2 <-- viewfront1