Page 213 - Water Standards
P. 213
stallation of pipes shall all meet the relevant requirements in DL 5031. The pipes shall be ar⁃
ranged to reduce resistance as much as possible. The pipe arrangement shall be clearly laid
out and reasonable
17 Do preliminary adjustment of the upper and lower cutoff contacts and water filling
contacts of the height indicator and control switches
18 Test the oil filtering accuracy: no lower than 20μm for piston pumps; no lower than
30μm for vane pumps.
4 1 10 The installation of mobile hoists such as trolley gate hoists, bridge crane and gantry
gate hoists shall meet the following requirements:
1 After assembly, the bridge frame and gantry shall meet the following requirements:
1) The girder mid span camber F = (0 9-1 4) L / 1000 and the maximum camber
shall be controlled to be within L/ 10 at the middle of the span (as shown in Fig⁃
=
ures 4 1 10- 1 and 4 1 10- 2). The lifting degree of the cantilever end F 0
(0 9-1 4) L 1 / 350 (or L 2 ). The camber and lifting degree shall be measured
without the influence of sunlight and temperature.
2) The girder horizontal bending f ≤ L / 2000, but the maximum value shall not
exceed 20mm (as shown in Figure 4 1 10-1). It shall be measured at the web⁃
plate which is about 100mm from the upper cover plate.
Figure 4 1 10-1
3) The horizontal deflection of the girder upper cover plate b≤B / 200 (as shown in
Figure 4 1 10-3). It may be measured at the ribbed slab before the girder has
2 0 6