Fastite Joint Pipe

The AMERICAN Fastite joint, furnished in sizes 4” to 64”, is a flexible, rubber ring compression-type joint used extensively in underground service for water, sewage or other liquids. It has the proven long-life and high-strength qualities inherent in pipe produced centrifugally in accordance with AWWA C151.

In addition, this significant AMERICAN development, a dependable, single gasket, push-on type joint meeting the requirements of AWWA C111, affords the customer lower joint cost and time-saving advantages in installation.

Fastite joint pipe provides exceptional strength and flexibility and has been widely accepted by engineers, contractors and utility officials since the 1950s. For added flexibility during construction, and for possible elimination of bends, a liberal 5° allowable deflection is standard in all sizes through 30", offering 21" offset in a 20’ length of pipe. Liberal deflection can also be provided in larger diameter pipe with standard and special Fastite deflection bells.

The patented AMERICAN Fastite joint embodies many advanced design features and is rated for a water working pressure of 350 psi. For specific conditions, ductile iron piping with this joint has been approved for higher pressure conditions. The socket, which is scientifically designed with two gasket recesses and a dividing buttress, is manufactured to close tolerances so that the gasket is self-centered, securely confined, and firmly compressed for a permanent, tight, trouble-free joint. The Fastite joint seal, bubble-tight under vacuum and external pressure, becomes even tighter with the application of internal pressure due to a specially designed wedging surface in the socket.

The Fastite joint pipe bell opening is slightly tapered to provide easy entry of the pipe end; the flared socket design permits liberal joint deflection. The plain end of the pipe is tapered or rounded to facilitate entry into the bell and self-centering in the gasket. On pipe cut in the field, the plain end can be easily beveled and smoothed by the use of a portable grinding wheel or other suitable apparatus. A stripe is painted on the plain end of AMERICAN Fastite joint pipe to provide a visual means of checking the joint alignment and to assure proper insertion.

Maximum Depths of Cover

for Minimum Pressure Classes of Ductile Iron Pipe ANSI/AWWA C151/A21.51

This table tabulates the maximum depth of cover for the five types of laying conditions, along with corresponding nominal wall thickness and maximum rated working pressure, all for minimum pressure classes of ductile iron pipe. Taken from the table that follows, it is offered as a convenience for quickly checking the capabilities of minimum pressure classes of ductile iron pipe under a given set of conditions.

For the majority of internal pressure and external loading conditions, minimum pressure classes are more than adequate and possess substantial safety factors.

Size (in.)	Pressure Class	Thickness (in.)	Laying Conditions Maximum Depth of Cover in Feet 1
Size (in.)	Pressure Class	Thickness (in.)	Type 1	Type 2	Type 3	Type 4	Type 5
4	350	0.25	53	61	69	85	100 4
6	350	0.25	26	31	37	47	65
8	350	0.25	16	20	25	34	50
10	350	0.26	11 2	15	19	28	45
12	350	0.28	10 2	15	19	28	44
14	250	0.28	see 3	11 2	15	23	36
16	250	0.3	see 3	11 2	15	24	34
18	250	0.31	see 3	10 2	14	22	31
20	250	0.33	see 3	10	14	22	30
24	200	0.33	see 3	8 2	12	17	25
30	150	0.34	see 3	-	9	14	22
36	150	0.38	see 3	-	9	14	21
42	150	0.41	see 3	-	9	13	20
48	150	0.46	see 3	-	9	13	20
54	150	0.51	see 3	-	9	13	20
60	150	0.54	see 3	5 2	9	13	20
64	150	0.56	see 3	5 2	9	13	20

1 An allowance for single H-20 truck with 1.5 impact factor is included for all sizes and all depths of cover.

2 Minimum allowable depth of cover is 3’. For depths less than 3’, consult AMERICAN.

3 Laying condition Type 1 is limited to 12" and smaller pipe. For 14" and larger pipe, laying condition Type 1 should not be used.

4 Calculated maximum depth of cover exceeds 100’.

Maximum Depths of Cover for All Pressure Classes

Ductile Iron Pipe ANSI/AWWA C151/A21.51

This table lists maximum depths of cover for the five types of laying conditions for all standard pressure classes; also tabulated are the corresponding nominal wall thickness and maximum rated working pressure. (Note: Although not listed in the following table, ductile iron pipe for working pressures higher than 350 psi is available. Consult AMERICAN regarding specific conditions involved.)

Size (in.)	Pressure Class psi1	Nominal Thickness (in.)	Laying Conditions Maximum Depth of Cover in Feet2
Size (in.)	Pressure Class psi1	Nominal Thickness (in.)	Type 1	Type 2	Type 3	Type 4	Type 5
4	350	0.25	53	61	69	85	1004
6	350	0.25	23	31	37	47	65
8	350	0.25	16	20	25	34	50
10	350	0.26	113	15	19	28	45
12	350	0.28	103	15	19	28	44
14	250	0.28	see5	113	15	23	36
14	300	0.3	see5	13	17	26	42
14	350	0.31	see5	14	19	27	44
16	250	0.31	see5	113	15	24	34
16	300	0.32	see5	13	17	26	39
16	350	0.34	see5	15	20	28	44
18	250	0.31	see5	103	14	22	31
18	300	0.34	see5	13	17	26	36
18	350	0.36	see5	15	19	28	41
20	250	0.33	see5	10	14	22	30
20	300	0.36	see5	13	17	26	35
20	350	0.38	see5	15	19	28	38
24	200	0.33	see5	83	12	17	25
24	250	0.37	see5	11	15	20	29
24	300	0.4	see5	13	17	24	32
24	350	0.43	see5	15	19	28	37
30	150	0.34	see5	-	9	14	22
30	200	0.38	see5	84	12	16	24
30	250	0.42	see5	11	15	19	27
30	300	0.45	see5	12	16	21	29
30	350	0.49	see5	15	19	25	33
36	150	0.38	see5	-	9	14	21
36	200	0.42	see5	84	12	15	23
36	250	0.47	see5	10	14	18	25
36	300	0.51	see5	12	16	20	28
36	350	0.56	see5	15	19	24	32
42	150	0.41	see5	-	9	13	20
42	200	0.47	see5	8	12	15	22
42	250	0.52	see5	10	14	17	25
42	300	0.57	see5	12	16	20	27
42	350	0.63	see5	15	19	23	32
48	150	0.46	see5	-	9	13	20
48	200	0.52	see5	8	11	15	22
48	250	0.58	see5	10	13	17	24
48	300	0.64	see5	12	15	19	27
48	350	0.7	see5	15	18	22	30
54	150	0.51	see5	-	9	13	20
54	200	0.58	see5	8	11	14	22
54	250	0.65	see5	10	13	16	24
54	300	0.72	see5	13	15	19	27
54	350	0.79	see5	15	18	22	30
60	150	0.54	see5	53	9	13	20
60	200	0.61	see5	8	11	14	22
60	250	0.68	see5	10	13	16	24
60	300	0.76	see5	13	15	19	26
60	350	0.83	see5	15	18	22	30
64	150	0.56	see5	23	9	13	20
64	200	0.64	see5	8	11	14	21
64	250	0.72	see5	10	13	16	24
64	300	0.8	see5	12	15	19	26
64	350	0.87	see5	15	17	21	29

1 These pipes are adequate for the rated working pressure indicated for each nominal size plus a surge allowance of 100 psi. Calculations are based on a 2.0 safety factor times the sum of working pressure and 100 psi surge allowance. Ductile iron pipe for working pressures higher than 350 psi is available.

2 An allowance for a single H-20 truck with 1.5 impact factor is included for all sizes and all depths of cover.

3 Minimum allowable depth of cover is 3’. For depths less than 3’, consult AMERICAN.

4 Calculated maximum depth of cover exceeds 100’.

5 Laying condition Type 1 is limited to 12" and smaller pipe. For 14" and larger pipe, laying condition Type 1 should not be used.

For other conditions not covered in these tables see AWWA C150 or consult AMERICAN for design of pipe thickness. Special thickness classes may be appropriate in such cases.

Maximum Depths of Cover

for Minimum Pressure Classes of Ductile Iron Pipe ANSI/AWWA C151/A21.51

Maximum Depths of Cover for All Pressure Classes

Ductile Iron Pipe ANSI/AWWA C151/A21.51

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