icon

Fastite Joint Pipe With Fast-Grip Gasket

Product Navigation

Special Thickness Classes

These are special thickness classes as shown in AWWA C150 and C151. AMERICAN can furnish any thickness in between these special thicknesses if deemed desirable for major projects.

Special classes are most appropriately used for some threaded, grooved, or ball and socket pipes or for extraordinary design conditions, and they are generally less available than standard pressure class pipe.

For pressure rating and maximum depth of cover capabilities of special thickness classes, check with AMERICAN. These capabilities can be estimated by comparing metal thickness and capabilities of those of pressure classes, or calculated by using the design formulas shown in AWWA C150.

2 1 2 1 9 Ft Fg Special Thickness Classes Print

Nominal Wall Thicknesses for Special Thickness Classes

ANSI/AWWA C150/A21.50
ANSI/AWWA C151/A21.51

Size (in.) Outside
Diameter
(in.)		 Special Thickness Classes – Wall Thickness (in.)1
50 51 52 53 54 55 56
4 4.80 - 0.26 0.29 0.32 0.35 0.38 0.41
6 6.90 0.25 0.28 0.31 0.34 0.37 0.40 0.43
8 9.05 0.27 0.30 0.33 0.36 0.39 0.42 0.45
10 11.10 0.29 0.32 0.35 0.38 0.41 0.44 0.47
12 13.20 0.31 0.34 0.37 0.40 0.43 0.46 0.49
14 15.30 0.33 0.36 0.39 0.42 0.45 0.48 0.51
16 17.40 0.34 0.37 0.40 0.43 0.46 0.49 0.52
18 19.50 0.35 0.38 0.41 0.44 0.47 0.50 0.53
20 21.60 0.36 0.39 0.42 0.45 0.48 0.51 0.54
24 25.80 0.38 0.41 0.44 0.47 0.50 0.53 0.56
30 32.00 0.39 0.43 0.47 0.51 0.55 0.59 0.63

Wall Thicknesses and Weights

Special Thickness Classes ANSI/AWWA C151/A21.51

Size in. Thickness Class Wall Thickness in. Weight in Pounds
Per Foot Plain End Per Foot Inc. Bell Per Nominal2 Length
4 51 0.26 11.3 11.7 213
4 52 0.29 12.6 13 236
4 53 0.32 13.8 14.2 257
4 54 0.35 15 15.4 279
4 55 0.38 16.1 16.5 300
4 56 0.41 17.3 17.7 321
6 50 0.25 16 16.7 335
6 51 0.28 17.8 18.5 370
6 52 0.31 19.6 20.3 410
6 53 0.34 21.4 22.1 445
6 54 0.37 23.2 23.9 480
6 55 0.4 25 25.7 515
6 56 0.43 26.7 27.4 550
8 50 0.27 22.8 23.8 480
8 51 0.3 25.2 26.2 525
8 52 0.33 27.7 28.7 575
8 53 0.36 30.1 31.1 625
8 54 0.39 32.5 33.5 675
8 55 0.42 34.8 35.8 720
8 56 0.45 37.2 38.3 770
10 50 0.29 30.1 31.4 630
10 51 0.32 33.2 34.5 695
10 52 0.35 36.2 37.5 755
10 53 0.38 39.2 40.5 815
10 54 0.41 42.1 43.5 875
10 55 0.44 45.1 46.5 935
10 56 0.47 48 49.3 990
12 50 0.31 38.4 40 805
12 51 0.34 42 43.6 875
12 52 0.37 45.6 47.2 950
12 53 0.4 49.2 50.8 1020
12 54 0.43 52.8 54.3 1090
12 55 0.46 56.3 57.9 1165
12 56 0.49 59.9 61.5 1235
14 50 0.33 47.5 50.3 1010
14 51 0.36 51.7 54.6 1095
14 52 0.39 55.9 58.7 1175
14 53 0.42 60.1 62.9 1260
14 54 0.45 64.2 67 1345
14 55 0.48 68.4 71.3 1430
14 56 0.51 72.5 75.3 1510
16 50 0.34 55.8 59 1180
16 51 0.37 60.6 63.8 1280
16 52 0.4 65.4 68.6 1375
16 53 0.43 70.1 73.3 1470
16 54 0.46 74.9 78.1 1565
16 55 0.49 79.7 82.9 1660
16 56 0.52 84.4 87.6 1755
18 50 0.35 64.4 68 1365
18 51 0.38 69.8 73.4 1470
18 52 0.41 75.2 78.8 1580
18 53 0.44 80.6 84.2 1690
18 54 0.47 86 89.6 1795
18 55 0.5 91.3 95 1905
18 56 0.53 96.7 100.3 2010
20 50 0.36 73.5 77.5 1555
20 51 0.39 79.5 83.5 1675
20 52 0.42 85.5 89.5 1795
20 53 0.45 91.5 95.5 1915
20 54 0.48 97.5 101.5 2035
20 55 0.51 103.4 107.5 2155
20 56 0.54 109.3 113.3 2270
24 50 0.38 92.9 97.7 1960
24 51 0.41 100.1 104.9 2100
24 52 0.44 107.3 112.1 2245
24 53 0.47 114.4 119.2 2390
24 54 0.5 121.6 126.4 2535
24 55 0.53 128.8 133.5 2675
24 56 0.56 135.9 140.7 2820
30 50 0.39 118.5 126.7 2540
30 51 0.43 130.5 138.7 2780
30 52 0.47 142.5 150.7 3020
30 53 0.51 154.4 162.6 3260
30 54 0.55 166.3 174.5 3495
30 55 0.59 178.2 186.4 3735
30 56 0.63 190 198.2 3970

Note: Dimensions, lengths, weights, etc., are subject to change at our option.

1. ) These are Special Thickness Classes as shown in AWA C150 and C151. They were previously designated standard thickness classes. AMERICAN can furnish any thickness in between these special thicknesses if deemed economical for major projects.
2. ) 4" Fastite is furnished in 18-foot nominal lengths – weights for all other sizes are for 20-foot nominal lengths.
Fastite Joint Pipe With Fast-Grip Gasket
Product Line Information
Contact Sales Request More Information