Buderus Manual on Trenchless Installation of Ductile Cast ... - Duktus

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Fig. 6.2 Traction vehicle Fig. 6.3 Plough on low-loader Fig. 6.4 Traction vehicle and steel rope A steel rope (Fig. . ) connects the plough to the traction vehicle and the latter can be supported on the ground by means of a support plate, to enable the tractive forces to be transmitted into the ground. The string of ductile cast iron pipes, which is connected by longitudinal force-fit joints, is laid out along the line of the run. The string is then hooked onto the widening body (Fig. . ) and is ploughed into the earth (Fig. .7) from a launch pit with an inclined ramp (Fig. . ). The length of the launch pit depends on the angular deflection of which the longitudinal force-fit restrained joints are capable. Fig. 6.5 Ploughshare with widening body Fig. 6.6 Launch pit A description of the technique Fig. 6.7 Ploughing-in process 9
The rocket plough technique 6.3 Outside protection With the rocket plough technique, the outside protection of the pipes is a matter of particular importance because the string of pipes which is hooked on is generally ploughed into the existing soil without any lubricants (bentonite or the like). Because there is generally no exact knowledge of just what the conditions are in the subsoil, the pipes require an outside protection which is able to carry high loads and which will remain undamaged even when subjected to extreme mechanical stresses and will thus stay effective for the entire life of the pipeline. What is used for this purpose in the case of ductile cast iron pipes is a plastic-modified cement mortar coating (Fig. .8) to DIN EN 1 2 [ .3]. What is used to protect the socket joints is either polyethylene shrink-on material (Fig. .9) to DIN 30 72 [ . ], with an additional sheet-metal cone to provide the shrink-on material with mechanical protection during the pulling-in process, or a cement mortar protecting sleeve with a sheet-metal cone for mechanical protection Fig. 6.8 Plastic-modified cement mortar coating 70 Cement mortar lining Ductile cast iron Cement mortar coating Zinc coating Fig. 6.9 Joint protection Fig. 6.10 Sheet-metal cone
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Buderus Ma
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Buderus Ma
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1. Introduction Introduction When t
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Buderus Ma
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At x 100 magnification, these graph
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10 3 kp cm Fig. 2.7 Steel Ductile G
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Fig. 2.11 How the pipes are produce
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2.3 Development in the joint-making
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joints is DVGW Arbeitsblatt GW 3 8
Page 20 and 21: Longitudinal force-fit joints and t
Page 22 and 23: Longitudinal force-fit joints and t
Page 24 and 25: 2.3.2 Making the BLS ® joint Makin
Page 26 and 27: Fig. 2.21 Left lock Catch Right loc
Page 28 and 29: 2.4 Inside and outside protection I
Page 30 and 31: Inside and outside protection the c
Page 32 and 33: Reference documents [2.8] Gaebelein
Page 34 and 35: General What is said above is true
Page 36 and 37: Other pluses that the two technique
Page 38 and 39: Fig. 3.5 Hydraulic unit The press-p
Page 40 and 41: 3.2 The auxiliary pipe technique Th
Page 42 and 43: In the final stage of the operation
Page 44 and 45: 3.4 Requirements for the site Requi
Page 46 and 47: Reference documents
Page 48 and 49: Both the variants of the burst lini
Page 50 and 51: During the pulling process, the tra
Page 52 and 53: 4.3.2 Joints As in virtually all tr
Page 54 and 55: Reference documents 3
Page 56 and 57: Fig. 5.3 Assembly of the string of
Page 58 and 59: the outlet nozzles. In rocky soils,
Page 60 and 61: 5.3 General requirements Companies
Page 62 and 63: A prerequisite for this procedure i
Page 64 and 65: Table .1 provides an overview of th
Page 66 and 67: Installations Nominal size DN lengt
Page 68 and 69: Reference documents [ . ] DVGW Arbe
Page 72 and 73: 6.4 Joints The longitudinal force-f
Page 74 and 75: Areas of application, advantages an
Page 76 and 77: Reference documents 7
Page 78 and 79: 7. 2 A description of the technique
Page 80 and 81: Buderus Giesserei
Page 82 and 83: Fig. 7.8 Pushing in a pipe A descri
Page 84 and 85: 7.5 Reference installations No. Loc
Page 86 and 87: [7. ] Rink, W.: Langrohrrelining mi
Page 88 and 89: In the second step, the pilot is up
Page 90 and 91: 8.3 Outside protection Outside prot
Page 92 and 93: 8.6 Reference documents [8.1] Richt
Page 94 and 95: A consideration of the economics of
Page 96 and 97: A consideration of the economics of
Page 98 and 99: [9.2] DVGW-Hinweis W 09: Auswirkung
Page 100 and 101: BLS ® restrained joint DN 80 to DN
Page 102 and 103: Technical data sheets 101
Page 104 and 105: General Pipes must not be: • drop
Page 106 and 107: Filling in the pipe pit DN 80 - DN
Page 108 and 109: DN 80 - DN 00 BLS ® joints There m
Page 110 and 111: Use of clamping ring joints DN 80 -
Page 112 and 113: Notice on assembly DN 80 - DN 00 BL
Page 114 and 115: Retrospective application of weldin
Page 116 and 117: 11.2 Installation instructions for
Page 118 and 119: Inserting the locking segments DN 0
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Angular deflection DN 00 - DN 1000
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Disconnecting BLS ® joint disconne
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Shrink-on devices and protective ta
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ZMU Before a pipe is cut, the ZMU s
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ZMU 127
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Buderus Manual on Trenchless Installation of Ductile Cast ... - Duktus

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