Conduit bending worksheet with answer key
By Andrew ·
Quick answer
This conduit bending worksheet mixes offsets, saddles, 90s and kicks, so you practice choosing the right method as well as doing the math. Answers stay hidden until you open them. Use the multiplier for the angle, subtract the deduct for a 90, and watch your units. At 45° the multiplier is 1.414 and the shrink is 0.414 per inch.
Worksheet problems
Work each problem on paper first, then open the answer. Answers are rounded to 1/16".
Problem 1
An offset is 7" high and bent at 30°. How far apart are the bends, and how much does the conduit shrink?
Show the answer
- Distance between bends
- 14"
- Shrink
- 1 7/8" (1.88")
Problem 2
A 3-point saddle clears a 4" high obstruction using 22.5° outer bends. How far is each outer mark from the center mark, and what is the shrink?
Show the answer
- Center mark to each outer mark
- 10 7/16" (10.45")
- Center bend angle
- 45°
- Total shrink
- 1 9/16" (1.59")
Problem 3
A run has to rise 6" and roll 8" sideways, bent at 30°. Find the true offset, the roll angle, the distance between bends and the shrink.
Show the answer
- True offset
- 10"
- Roll angle
- 53.13°
- Distance between bends
- 20"
- Shrink
- 2 11/16" (2.68")
Problem 4
A 5" kick is bent at 30°. How far from the back of the 90 is the kick mark, and what is the shrink?
Show the answer
- Back of the 90 to the kick mark
- 10"
- Shrink
- 1 5/16" (1.34")
Problem 5
A stub-up must be 20" to the back of the 90, and the bender deducts 6". Where is the mark?
Show the answer
- Mark the conduit at (from the stub end)
- 14"
Problem 6
3 conduits, 2" apart, are offset 4" at 30°. Find the distance between bends, how far each next conduit’s marks move, and the last conduit’s total move.
Show the answer
- Distance between bends
- 8"
- Move each next conduit’s marks by
- 9/16" (0.54")
- Last conduit’s marks move by
- 1 1/16" (1.07")
- Shrink of each conduit
- 1 1/16" (1.07")
Problem 7
A 3-point saddle clears a 6" high obstruction using 22.5° outer bends. How far is each outer mark from the center mark, and what is the shrink?
Show the answer
- Center mark to each outer mark
- 15 11/16" (15.68")
- Center bend angle
- 45°
- Total shrink
- 2 3/8" (2.39")
Problem 8
An offset is 9" high and bent at 45°. How far apart are the bends, and how much does the conduit shrink?
Show the answer
- Distance between bends
- 12 3/4" (12.73")
- Shrink
- 3 3/4" (3.73")
Problem 9
A run has to rise 5" and roll 12" sideways, bent at 45°. Find the true offset, the roll angle, the distance between bends and the shrink.
Show the answer
- True offset
- 13"
- Roll angle
- 67.38°
- Distance between bends
- 18 3/8" (18.38")
- Shrink
- 5 3/8" (5.38")
Problem 10
A 8" kick is bent at 45°. How far from the back of the 90 is the kick mark, and what is the shrink?
Show the answer
- Back of the 90 to the kick mark
- 11 5/16" (11.31")
- Shrink
- 3 5/16" (3.31")
Problem 11
A 4-point saddle clears a 3" high, 10" wide box using 30° bends. Find the distance between the bends of each offset, the distance across the top and the shrink.
Show the answer
- Between the bends of each offset
- 6"
- Across the top of the obstruction
- 10"
- Total shrink
- 1 5/8" (1.61")
Problem 12
A stub-up must be 30" to the back of the 90, and the bender deducts 5". Where is the mark?
Show the answer
- Mark the conduit at (from the stub end)
- 25"
How to use this worksheet
- Copy the problems onto paper, or work from the screen with a notepad.
- Give yourself a time limit. A mixed set is as much about speed as accuracy.
- Write the formula and units on each line before you calculate.
- Open the answers only when the whole sheet is done, then mark each one.
- Redo the ones you missed the next day.
The skills a mixed set covers
| Problem | What you find | Key number |
|---|---|---|
| Offset | Distance between bends and shrink | Multiplier 2.000 at 30° |
| 3-point saddle | Center-to-outer mark distance | Rule of thumb for 22.5°: 2.6 |
| 4-point saddle | Distance between bend pairs | Offset multiplier for the angle |
| 90° stub-up | Where to mark | Stub length − deduct (5" typical, 1/2" EMT) |
| Kick | Distance from the end | Multiplier for the kick angle |
Saddle rules in one place
A 3-point saddle is usually bent with a 45° center bend and two 22.5° outer bends. The outer marks go on each side of the center mark, the obstruction height times the 22.5° multiplier away. Many courses teach a rounded rule, so check which one yours expects.
- Obstruction height
- 3"
- Outer bends
- 22.5°
- Exact multiplier
- 2.613, so 7 13/16" each side
- Course rule
- 2.6 × 3" each side
- Shrink rule of thumb
- 3/16" per inch of height
A worked 90 for comparison
- Stub length
- 12"
- Typical hand-bender deduct
- 5"
- Where to mark
- 12" − 5", measured from the end
- Line up
- The mark with the arrow on the bender
Check the number cast on your own bender before relying on the typical one; benders differ even within a model.
Errors a mixed sheet catches
- Using the multiplier for the wrong angle after changing bends.
- Forgetting shrink when you are measuring from the end.
- Measuring to the wrong edge of the conduit, or adding the deduct instead of subtracting it.
- Mixing decimals and fractions in the same line.
- Rounding too early; keep full numbers until the last step.
Check your work and track it
After marking the sheet, enter a few of the same bends in BendMate and compare. Its marks come from a bender’s real radius, so they can run a little smaller than worksheet answers; the multiplier method matches the worksheet exactly. Write your score and the type of each miss, and see which kind of problem needs more work.
Get the marks for your bender
BendMate works this out from your bender’s radius and deduct, flags a bend that won’t work, and shows you every mark.
Common questions
Is there an answer key for the worksheet?
Yes. Each problem’s answer is hidden until you open it, so you can finish the sheet first and then check it.
What bends does the worksheet include?
A mix of offsets, saddles, 90s and kicks, so you practice picking the method as well as doing the math.
Can I print the worksheet?
You can print the page from your browser or copy the problems onto paper. Keep the answers hidden until you have finished.