I.P.S. Pressure/Irrigation (P.I.P) Installation Guide - JM Eagle

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3.8 Assembly at Fittings and Adaptors JM Eagle IPS Pressure and Irrigation Pipe are manufactured with an IPS and/or PIP outside diameter. This means that this pipe can be directly connected to IPS OD products (i.e., steel pipe accessories) and/or common irrigation equipment and valves. Additionally, other accessory items may be joined to JM Eagle IPS Pressure and Irrigation Pipe through the use of specially designed transition gaskets or fittings. No extra support need be provided for these fittings and adaptors, but any heavy metal fittings or valves must be individually supported to avoid differential settlement between fittings and pipe. Note that fittings and valves in-line will require thrust blocking as specified in Section 3.9. Fittings and adaptors are usually installed at predetermined locations and therefore, a tie-in length of less than 20 feet will usually be required. 1. Be sure the correct gasket is used with the bell or fitting. 2. Bevel on the spigot should approximate the cast iron bevel, which is shorter and steeper. The reason for this is that the depth of the bell or fitting is shorter than the PVC bell. The reduced length of taper will allow a greater flat sealing surface and minimize the possibility of the gaskets, seating on the bevel, which may cause leakage. 3. When connecting to a mechanical joint or flanged fitting, a beveled spigot is not recommended or required. Cut off beveled end of pipe prior to insertion into M-J style fitting. 3.9 Thrust Blocking and Anchorage at Fittings Thrust backing (see Figure 12) is needed wherever the pipeline: 1. Changes direction, as at tees, bends or crosses. 2. Changes in size, as at reducers. 3. Stops, as at dead ends. 4. Valves, at which thrust develops when closed. 24 IRRIGATION & I.P.S. PRESSURE INSTALLATION GUIDE
Figure 12 3.9.1 Determining Size and Type of Thrust Blocking Size and type of blocking depends on pressure, pipe size, kind of soil and type of fitting. Common thrust block configurations are shown in Figure 13. At vertical bends, anchor pipelines to resist outward or horizontal thrusts as shown in Figure 14. If thrusts due to high pressure are expected, anchor the valves as shown in Figure 15. In all cases, thrust blocking and anchorages should be designed by a competent engineer to ensure adequate safety and support based on the actual field conditions encountered. Failure to design thrust blocking and anchorage adequately may result in damage to the pipe, property and/or people. Figure 14 If the engineer has not specified the size of a thrust block, take the following steps to determine the bearing area required for a thrust block. IRRIGATION & I.P.S. PRESSURE INSTALLATION GUIDE 25
Page 1 and 2: IRRIGATION ASTm D2241 AND/OR NRcS 4
Page 3 and 4: IRRIGATION & IPS PRESSURE cONTENTS
Page 5 and 6: 5.0 PIPE TESTING AND REPAIR . . . .
Page 7 and 8: 10. Uni-Bell ® UNI-TR-6 “PVC For
Page 9 and 10: JM Eagle’s liability shall not, a
Page 11 and 12: 2. IF LOAD HAS SHIFTED OR SHOWS ROU
Page 13 and 14: Warning: PVC pipe, though lighter t
Page 15 and 16: 1.7 Distributing Along the Trench I
Page 17 and 18: PIPE SIZE (inches) SDR 51 SDR 41 SD
Page 19 and 20: NOTICE: Since PVC pipe is a flexibl
Page 21 and 22: 3.0 Pipeline Construction 3.1 Inspe
Page 23 and 24: Caution: After spigot end is lubric
Page 25: 3.5 Cutting A square cut is essenti
Page 29 and 30: THRUST AT FITTINGS PRODUCED BY 100
Page 31 and 32: soil, which braces the thrust block
Page 33 and 34: 4.1 Bedding Bedding is required pri
Page 35 and 36: depths of cover (less than 3 feet)
Page 37 and 38: 4.4.2 Mechanical Tampers Care shoul
Page 39 and 40: 5.1.1 Deflection Testing It is the
Page 41 and 42: Volume of Water Required in Gallons
Page 43 and 44: 5.4 Making Leakage Tests The purpos
Page 45 and 46: of the wall thickness of the pipe,
Page 47 and 48: Class III Materials: These material
Page 49 and 50: Table A1.1 continued Percentage Pas
Page 51 and 52: Table A1.2 continued Soil Class as
Page 53 and 54: Notes:
Page 56: evised January 2009 JmE-06b © J-m

I.P.S. Pressure/Irrigation (P.I.P) Installation Guide - JM Eagle

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