Module 4 - Construction of a gravity fed system

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Reducer M-M Reducer Male-Male Reducer M-F Reducer Male-Female Cap M Male cap Cap F Female cap GI pipes are connected using GI sockets. Each pipe is threaded on the two ends and in theory, purchased with a socket. The water tightness is ensured using Teflon tape. To use these pipes, it is necessary to have special tools: • A pipe threader, which allows threading pipes (the standard pipe threader tool allows working on pipe from ½” to 2” ½ with three sets of threads size) • Pipe cutter • Pipe vice → PVC pipes and fittings The accessories for PVC pipes are presented in table 11. Table 11: Fittings for PVC pipes. DESSIN ENGLISH NAME INDONESIAN NAME UTILISATION Socket Joining two pipes Union Joining two pipes with possible disassembling elbow 90° Joining two pipes with 90° angle 49
elbow 45° Joining two pipes with 45° angle Tee 90° Joining three pipes with the same diameter with 90° angle reducer Joining two pipes of differents diameter male adaptator Joining PVC-GI pipe female, or PVC-GI valve etc... female adaptator Joining PVC-GI male, or PVC-GI nipples etc. Flexible pipe adaptator Allows joining PVC to flexible pipe. A clamp should be used cap Close a PVC pipe The PVC pipes are joined using PVC socket and special PVC glue (see figure 16). Fig.16: Joining of PVC pipes with glue. 50
Page 1 and 2: 2007 UPDATE
Page 3 and 4: I. INTRODUCTION The construction of
Page 5 and 6: Gravel is used only in the making o
Page 7 and 8: Table 2: Increase of concrete resis
Page 9 and 10: Result: • Calculate the volume of
Page 11 and 12: angle sides are preferable. To guar
Page 13 and 14: We differentiate steels bars accord
Page 15 and 16: The slab thickness (e) must be at l
Page 17 and 18: For the rectangular tank of importa
Page 19 and 20: → Rectangular tank Capacity and d
Page 21 and 22: The water quantity to be added depe
Page 23 and 24: III. CONSTRUCTION OF THE INFRASTRUC
Page 27 and 28: III.2. STORAGE TANK The tank is mad
Page 32: For the pre-manufactured plastic ta
Page 40: III.4. TAPSTAND All the tapstands m
Page 44: Figure 14A Tapstand 2 43
Page 47 and 48: Fig.15: Example of tapstand . A pie
Page 49: Self closing tap "Talbot" Public wa
Page 53 and 54: For the joining of PE pipes, we use
Page 55 and 56: - Backfilling Use the same ruble to
Page 57 and 58: Fig.24: Crossing a gully or a river
Page 59: III.6. WORK DURATION AND MANPOWER T

Module 4 - Construction of a gravity fed system

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