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
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