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

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During the pulling process, the traction unit is supported against the wall of the arrival pit. Successive parts of the traction linkage are taken apart backwards. The static variant is well suited to homogeneous soils which can be displaced easily. Fig. 4.7 Perforating wheel for ductile materials Fig. 4.8 Roller cutting blade A description of the technique There has now also been practical experience of the replacement of ductile pipe materials (ductile cast iron and steel) with pipes of ductile cast iron. In this case the old pipes are cut open (Fig. . ) with special perforating and cutting wheels (Figs. .7 and .8) and are bent open by the widening head which follows sufficiently far to allow the new pipeline to be pulled in after the head. Trials of the use of this technique have been conducted up to a nominal size of DN 00 [ .1] Fig. 4.9 Traction head for pulling in two pipes in parallel There have also been isolated instances where combinations of ductile cast iron pipes for the water pipeline and a plastic pipe as an accompanying duct to protect cables have been pulled into a steel pipe which had been cut open (Fig. .9). 9
The burst lining technique 4.3 Pipeline materials Because the soil conditions are generally unknown and above all because of the sharpedged fragments (Fig. . ) which most certainly occur with the burst lining technique, care should be taken to see that the pipeline material used is one which is not sensitive to factors of this kind. 4.3.1 Outside protection The coating of plastic-modified cement mortar (ZMU) which is used on ductile cast iron pipes provides excellent protection against the risks which are mentioned above. The socket joint is fitted with a cement mortar protecting sleeve or a shrink-on sleeve and is protected by a sheet-metal cone (Fig. .10). Plastic pipes may only be used if they have a protective outer sheath. (Please note that the investigations described in GWF 3/2000 [ . ] clearly indicate that even this protective outer sheath does not always provide protection against damage to the pipe within it caused by point loads.) 0 Fig. 4.10 Ductile cast iron pipe with a BLS ® joint, cement mortar coating, shrink-on sleeve and sheet-metal cone
Page 1 and 2: Buderus Ma
Page 6 and 7: 1. Introduction Introduction When t
Page 10 and 11: At x 100 magnification, these graph
Page 12 and 13: 10 3 kp cm Fig. 2.7 Steel Ductile G
Page 14 and 15: Fig. 2.11 How the pipes are produce
Page 16 and 17: 2.3 Development in the joint-making
Page 18 and 19: 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 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 70 and 71: Fig. 6.2 Traction vehicle Fig. 6.3
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
Page 120 and 121:
Angular deflection DN 00 - DN 1000
Page 122 and 123:
Disconnecting BLS ® joint disconne
Page 124 and 125:
Shrink-on devices and protective ta
Page 126 and 127:
ZMU Before a pipe is cut, the ZMU s
Page 128 and 129:
ZMU 127
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129
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131
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Buderus Manual on Trenchless Installation of Ductile Cast ... - Duktus

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