Deflection Gauges
SPECIFICATIONS
ASTM/Uni-Bell Deflection Test Specifications
FIELD CERTIFICATION OF HURCO GAUGES
ASTM D-3034 SDR 35 – Deflection test off of base
inside diameter (Ultra-Rib pipe – same dimensions)
PIPE SIZE
4
6
8
10
12
15
BASE I.D.
3.874
5.742
7.665
9.563
11.361
13.898
5% TEST
3.68
5.45
7.28
9.08
10.79
13.20
7.5%TEST
3.58
5.31
7.09
8.84
10.51
12.86
ASTM F-679 (T1 WALL) – Deflection test off of base
inside diameter
PIPE SIZE
18
21
24
27
BASE I.D.
16.976
20.004
22.480
25.327
5% TEST
16.13
19.01
21.36
24.06
7.5%TEST
15.70
18.50
20.80
23.44
ASTM D-3034 SDR 26 – Deflection test off of base
inside diameter
PIPE SIZE
6
8
10
12
15
BASE I.D.
5.612
7.488
9.342
11.102
13.575
5% TEST
5.33
7.12
8.87
10.54
12.90
7.5%TEST
5.19
6.93
8.64
10.27
12.56
ASTM F-794 for Ribbed Pipe – Deflection test off of
base inside diameter (taken from UNI-B-9)
PIPE SIZE
BASE I.D.
5% TEST
7.5%TEST
4
3.869
3.68
3.58
6
5.720
5.43
5.29
8
7.637
7.26
7.07
10
9.529
9.05
8.82
12
11.322
10.75
10.47
15
13.849
13.16
12.81
18
17.003
16.15
15.72
21
19.985
18.99
18.49
24
22.613
21.48
20.91
27
25.490
24.22
23.58
30
28.367
26.95
26.24
33
31.249
29.69
28.91
36
34.126
32.42
31.57
39
37.003
35.15
34.22
42
39.880
37.89
36.89
45
42.762
40.62
39.55
48
45.639
43.36
42.22
ASTM F-789 – Deflection test off of base inside diameter
(4” T1 Wall – 6” to 15” T2 Wall) (taken from UNI-B-10)
PIPE SIZE
4
6
8
10
12
15
BASE I.D.
3.91
5.80
7.73
9.64
11.46
14.01
5% TEST
3.71
5.51
7.34
9.15
10.88
13.30
7.5%TEST
3.62
5.36
7.15
8.92
10.60
12.96
ASTM F-894 – Deflection test off of base inside
diameter
PIPE SIZE
18
21
24
27
30
33
36
42
48
54
60
66
72
84
96
120
BASE I.D.
17.42
20.34
23.25
26.15
29.07
31.98
34.89
40.72
46.54
52.35
58.18
63.99
69.81
81.46
93.08
116.05
5% TEST
7.5%TEST
16.55
19.32
22.09
24.84
27.62
30.98
33.15
38.68
44.21
49.73
55.27
60.79
66.32
77.38
88.43
110.25
16.11
18.81
21.51
24.19
26.89
29.58
32.27
37.67
43.05
48.24
53.82
59.19
64.57
75.34
86.10
107.35
P.O. Box 70 • Harrisburg, SD 57032
1-800-888-1436
Toll Free Fax #: 1-800-516-7337
www.hurcotech.com
SPECIFICATIONS
FIELD CERTIFICATION OF HURCO GAUGES
1. Measure end plate.
2. Measure skids.
Field Certification of Multi-Size Gauge
2 X the skid measurement + the plate measurement = outside diameter
Field Certification of
Stationary-Type Gauge
The measurement from outside
of skid to edge of center hole,
+ 3/8” (1/2 the diameter
of center hole) X 2
= outside diameter.
Use HURCO Proving Rings for
a More Precise Measurement
Although HURCO Gauges can be
certified in the field with a + (plus) or (minus) accuracy of 1/16 of an inch,
some engineers and municipalities will
require an even more precise form of
measure. HURCO has a full line of
proving rings from 4” to 27” with a +
(plus) or - (minus) accuracy of 0.020.
HURCO Proving Rings are the best way
to determine the accuracy of deflection
test gauges.
Available in
single sizes
or full sets.
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