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Conduit Bends Calculator

3-pt Saddle
Saddle Depth =
Angle =
Distance-Bends =
Mark Ahead =
t_db = [0.1736; 0.2588; 0.3827; 0.5; 0.7071]
t_ma = [0.0625; 0.125; 0.1875; 0.25; 0.375]
Offset
Offset Length =
Angle =
Distance-Bends =
Shrinkage =
t_db2 = [5.76; 2.61; 2; 1.414; 1.15]
t_ma2 = [0.0625; 0.125; 0.1875; 0.25; 0.375]

Help

3-pt Saddle

Calculates the distance required between bends when making 3 point saddle bends in metal conduits. A 3 point saddle bend is typically used when an obstruction is in the path of a straight conduit run. The process for making a 3 point saddle bend is detailed at the bottom of this overview.
- Saddle Depth: Measurement of the object that must be avoided.
- Angle: Desired angles to use to make the saddle bend.
- Distance-Bends: Measurement used to mark the conduit at each side of the first mark.
- Mark Ahead: Measurement used to mark the center of the object on the conduit ahead of the actual center of the obstruction.
[https://infinitysw.s3.amazonaws.com/cengage/conduitbends1.png]
[https://infinitysw.s3.amazonaws.com/cengage/conduitbends2.png]
STEP 1 - Measure the depth of the object that must be avoided.
STEP 2 - Mark the center of the object on the conduit ahead of the actual center of the obstruction by the Mark Ahead dimension provided by this application.
STEP 3 - Use the Distance-Bends measurement calculated in this template and mark the conduit at each side of the first mark.
STEP 4 - Use the largest of the 3 bends chosen and bend the conduit to that angle by placing the rim notch on the bender on the center mark of the saddle bend.
STEP 5 - Slide the conduit down to either of the remaining 2 marks and place the arrow of the bender on that mark.
STEP 6 - Bend the conduit to the lesser of the angles chosen. Remove the conduit from the bender and repeat the bend at the last remaining point by placing the arrow on the bender on the marked point and bending the conduit to the smaller angle.
[https://infinitysw.s3.amazonaws.com/cengage/conduitbends3.png]
[https://infinitysw.s3.amazonaws.com/cengage/conduitbends4.png]
[https://infinitysw.s3.amazonaws.com/cengage/conduitbends5.png]

Offset

Calculates the distance required between bends when making offset bends in metal conduits. More explanation of the process is noted at the bottom of this overview.
- Offset Length: Dimension that the conduit must change paths.
- Angle: Desired angle to use to make the offset bend.
- Distance-Bends: Amount between the bends.
- Shrinkage: Amount of shrinkage in inches that must be added to the distance measured from the last coupling to the point where the conduit needs to change course.
[https://infinitysw.s3.amazonaws.com/cengage/conduitbends1.png]
[https://infinitysw.s3.amazonaws.com/cengage/conduitbends2.png]
[https://infinitysw.s3.amazonaws.com/cengage/conduitbends3.png]
[https://infinitysw.s3.amazonaws.com/cengage/conduitbends4.png]
Offset bends are used to change the path of a conduit to a different level. These types of bends are commonly used for conduits entering an enclosure that is extending from the wall.
Offset bends can be made with numerous different angles. The steeper the angle is, the less space that the offset will require. When making offset bends the conduit will shrink in length due to the travel distance of the bends. When working toward an obstruction, this shrinkage must be taken into consideration. When working away from an obstruction, the shrinkage can be disregarded.
The 1st step in making an offset bend is to measure the distance from the last coupling to the point where the conduit needs to change course. Add the shrinkage amount given in this calculator to this dimension and make your first mark on the conduit. Make the second mark using the distance between bends measurement also provided by this calculator. Align the arrow on the bender with the first mark and make the first bend to the desired angle selected. Rotate the conduit 180° and slide the conduit down the bender to the 2nd mark. Make the 2nd bend by aligning the arrow on the 2nd mark and using the same angle.
Perfect offsets can be achieved every time by using this method.

Examples

3-pt Saddle

Calculate the measurements to used for bending conduit where an 8 inch obstruction is encountered and a 3 point saddle bend must be made to avoid the obstruction. 15°, 30°, and 15° angles are to be used to make this bend. Where should the bends be made if the obstruction is 4 feet from the last coupling?
- Saddle Depth: 8in
- Angle: 15°-30°-15°
- Distance-Bends: 30&15/16in
- Mark Ahead: 1in
The distance-bends will be 30&15/16in and the Mark Ahead measurement will be 1in.

Offset

Calculate the distance required between bends when making offset bends after a 6 inch obstruction is encountered and an offset bend must be made to avoid the obstruction. A 60° angle is to be used to make this bend. Where should the bends be made if the obstruction is 4 feet from the last coupling?
- Offset Length: 6in
- Angle: 60°
The distance is 6&7/8in and the shrinkage is 2&1/4in.
[https://infinitysw.s3.amazonaws.com/cengage/conduitbends6.png]

Keywords

Saddle Depth
Angle
Distance-Bends
Mark Ahead
Offset Length
Angle
Distance-Bends
Shrinkage
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