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Idiomas disponibles
Idiomas disponibles
IllUSTRATED BENDING GLOSSARY
back-to-back bend—
bends with a straight section of conduit or pipe between the bends.
center-to-center distance — the distance between the successive
bends that make up an offset or a three-bend saddle.
developed length — the actual length of pipe that will be bent; refer to
distance "d" in the illustration at left.
gain —
q = angle of bend
r = the centerline bending radius of the bending shoe
kick —
leg length — the distance from the end of a straight section of conduit or
pipe to the bend; measured from the end to the outside edge of the conduit
or pipe.
offset bend — two opposite bends with the same degree of bend; used to
avoid an obstruction.
offset height — the distance between the two legs of an offset bend,
measured perpendicular to the two legs; also called amount of offset and
depth of offset.
rise — the distance from the end of a straight section of conduit or pipe to
the bend; measured from the end to the center line of the conduit or pipe.
Also called stub or stub-up.
saddle — a three-bend or four-bend combination; used to avoid an
obstruction.
shrink — the amount of conduit "lost" when laying out an offset bend
working toward an obstruction.
spring back — the amount, measured in degrees, that a conduit or pipe
tends to straighten after being bent.
23
BENDING INSTRUCTIONS 90° STUBS
1. Measure the length of the required stub.
2. See the Minimum Stub Length formula on the Deduct Table. The required
stub must be equal to or longer than the Minimum Stub Length.
3. Measure and mark the stub length on the conduit. This is Mark 1.
Subtract the Deduct from this mark and make a new mark. This is Mark 2.
4. Align Mark 2 with the front edge of the hook and bend the conduit.
Notes:
When the operator presses RETURN, the conduit may spring back a few
degrees. Compensate by overbending as shown in the Scale Reading Table.
STUB LENGTH
DEDUCT
MARK 2
MARK 1
MARK 2
Deduct Table
SIZE
1
2
9
11
14
DEDUCT
EMT
7
IMC
14
9
11
MINIMUM STUB LENGTH-DEDUCT PLUS 2 INCHES
Scale Reading Table-Single-Shoe Groups
CONDUIT
RIGID
EMT
SIZE
15°
30°
45°
60°
90°
15°
30°
45°
17
33
49
64
96
16
32
48
1/2
17
33
48
64
95
17
33
48
3/4
17
32
48
63
94
17
48
1
32
1-1/4
17
32
48
63
94
17
32
48
1-1/2
17
32
48
63
94
19
35
50
32
48
63
94
19
34
50
2
17
24
MARK 1
IMC
60°
90°
15°
30°
45°
60°
90°
63
96
20
36
51
67
98
64
96
19
35
50
66
97
63
94
19
35
50
66
97
63
94
19
35
50
66
97
66
97
17
33
49
64
96
96
19
34
50
65
96
65
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