Offsets - Greenlee Site-Rite 844A Use Manual

Offsets

An offset is used to re-route the conduit to avoid an obstruction. An offset consists of two equal opposing bends.
Two factors must be considered when selecting the offset angle. First, a steeper bend angle will require more pulling
force. Second, a shallower bend angle will require more space.
The Center-to-Center distance is used to find the posi-
tion of offset bending marks. The Center-to-Center
distance is the distance between the successive bends
that make up an offset. To find the center-to-center
distance. Use one of these two methods:
• Find the appropriate multiplier in Table 1. Then multi
ply the height of the obstruction by the multiplier.
Center-to-Center Distance = Height (H) X Multiplier
• Locate the Center-to-Center distance in Table 2 for
the appropriate offset height and bend angles.
Working Past an Obstruction (Fig. 6)
DIST. TO START
OF 1ST BEND
H
45°
DIST. TO START
CENTER-TO-CENTER
OF 1ST BEND
MARK A
Figure 6
Working Toward an Obstruction (Fig. 7)
When working toward an obstruction, the conduit will appear to "shrink." To compensate for shrinkage, use the
shrink per inch of offset as shown in Table 1 Shrink Amount from Table 2.
DIST. TO OBSTRUCTION
DIST. TO OBSTRUCTION + SHRINK
CENTER-TO-CENTER
MARK B
Figure 7
52034125 REV 02
MARK B
45°
MARK A
© 2023 Greenlee Tools, Inc.
(APPLIES TO ANY SIZE CONDUIT)
OFFSET ANGLE MULTIPLIER
10°
15°
22-1/2°
30°
45°
60°
1. Determine the center-to-center distance.
2. Make MARK A by measuring the distance from end
of conduit to desired start of 1st bend.
3. Make MARK B by measuring the Center-to-Center
distance from MARK A.
4. Insert conduit end through appropriate bend hook
and align MARK A with arrow. Bend to desired
angle.
5. Turn conduit 180
Bend to same angle.
6. Inspect finished bend.
1. Find the Total Shrink per inch of offset using Table 1
based on the desired bend angle.
Total Shrink = Height (H) x Shrink per inch
2. Make MARK A by measuring from the conduit end,
H
the Distance to Obstruction plus the Total Shrink.
3. Make MARK B by measuring the Center-to-Center
distance back toward the conduit end from MARK
A.
4. Insert conduit end through appropriate bend hook
and align MARK A with arrow. Bend to desired
angle.
5. Turn conduit 180
Bend to same angle.
6. Inspect finished bend.
®
Site-Rite Hand Benders
TABLE 1: OFFSETS
SHRINK PER INCH
OF OFFSET (in.)
6.0 1/16
3.86 1/8
2.6 3/16
2.0 1/4
1.4 3/8
1.2 1/2
o
and align MARK B with arrow.
o and align MARK B with arrow.
9