Page 208 - Water Standards
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3  Allowable installation error of the tracks shall meet the requirements of Table 4   1   6  
               4  The track joints shall meet the following requirements:
                 1) Joint misalignment on the left, right and front of the track shall be no larger
                   than 1mm.
                 2) The joint positions of two parallel tracks shall be staggered, and the staggered dis⁃
                   tance shall not be equal to the length of the wheelbase (between the front and rear
                   wheels) of the lifting device.
                     Table 4   1   6  Allowable installation error of tracks
                                                             Unit: mm
             No          Item          Allowable error     Note
                              L≤10000       2         Track design center line
                    Offset between
                                                    shall  be  measured
                 track actual center
             1                                      according to the hoisting
                 line and design  L>10000   3
                                                    center line, dam axis or
                 center line
                                                    powerhouse center line
                              L≤10000      ±3
             2     Track gauge                              —
                              L>10000      ±5
                                          1/ 1500  of
                    Track lengthways straight⁃
             3                        member length and     —
                 ness
                                      no larger than 10
                                         1/ 100 of track     Measure the ends and
             4     Track crosswise inclination
                                      width         the middle of each track
                   Relative elevation difference
                                         L / 800 and no
             5   of two tracks in the same sec⁃             —
                                      larger than 10
                 tion
              Note: L is Track gauge  
                 3) The gap between joints shall be between 1mm and 3mm. The gap between expan⁃
                   sion joints shall meet the requirements of the drawings and the deviation shall be
                   no larger than ±1mm  
           4   1   7  The assembly of hoisting equipment shall meet the following requirements:
               1  Generally the equipment shall be assembled in the factory, but large size equipment
           which is difficult to assemble in the factory can be assembled on the construction site  
               2  All the components and parts shall pass the quality tests and with quality certifica⁃
                                                                 2 0 1
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