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4 Point Saddle Bend Calculator

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4 Point Saddle Bend Calculator

Planning shrink grows with conduit trade size and total degrees bent in the offset/saddle. Uses a simple proportional model; verify with your bender multiplier tables.

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What is 4 Point Saddle Bend Calculator?

Calculates bend marks and spacing for 4-point saddle conduit bends over obstructions.

4 Point Saddle Bend Calculator Formula / Method

Shrinkage=ObstructionDepth×ShrinkConstantShrinkage = Obstruction Depth × Shrink Constant
Spacing=ObstructionHeight/sin(θ)Spacing = Obstruction Height / sin(θ)
M2=M1+Spacing,M3=M2+Width,M4=M3+SpacingM2=M1+Spacing, M3=M2+Width, M4=M3+Spacing

4 Point Saddle Bend Calculator Worked Example

Obstruction 3" high, 6" wide, 30° bends

Spacing=3/sin30°=6"Spacing=3/sin30°=6"
Shrinkage=3×0.25=0.75"Shrinkage=3×0.25=0.75"

Marks: 0", 6", 12", 18"

Where 4 Point Saddle Bend Calculator Is Applied

  • Electrical conduit installation
  • Industrial electrician work
  • Apprenticeship training
  • MEP rough-in planning

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