Conduit Fabrication, Level II
Lesson 4
Worksheet for Questions 44 through 75
A – 2½" RMC
Stub = 48"
Conduit B –
Existing 2½" RMC
B – 2½" RMC
C – 2" RMC
D – 1" RMC
18 Shots
{
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3" Spacing
Leg = 65½"
Original Installation – Conduit B
Desired installation with Conduits A, C, and D added
In this exercise you are to complete the layout sheets for
each of the conduits, beginning with Conduit B. As you
work through the problems for each conduit you will make
the following calculations for each of the conduits.
Conduit B
1. Bend Radius (R)
2. Stub Length
3. Leg Length
2 7/32"
4. The distance (D1) from the stub end of the conduit
to the start of the developed length
24" Level
5. The distance (D2) from the leg end of the conduit
to the end of the developed length
6. The developed length (DL) of the bend
Measuring the radius of Conduit B
7. The spacing (S) between the shots
8. The total length (TL) of conduit needed
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Lesson 10
There may be times when you have to determine the radius of an existing conduit bend and then fabricate
additional concentric bends in order to have all of the conduits in a group line up around a common center point.
In the next set of problems you will be shown some photos of a segmented 90° bend (Conduit B) around which
you will need to run three additional conduits, both inside (Conduits C & D) and outside of the bend (Conduit A).
Conduit Fabrication, Level II
Lesson 4
Worksheet for Questions 44 through 75
Layout for Conduit B
Layout for Conduit A
Page 2
©NJATC
Conduit Fabrication, Level II
Lesson 4
Worksheet for Questions 44 through 75
Layout for Conduit C
Layout for Conduit D
Page 3
©NJATC