How much is the height difference between the head and tail of t

1. The ball mill requires high levelness. Generally, the error of large-scale mill should be controlled within 0.5mm.

2. 0.5mm

3. Unknown_Error

4. In general, the gradient of drainage pipe (that is, the so-called elevation difference) is vertical distance / horizontal distance = 3 / 1000, note: the unit is mm
in this way, the height difference of pipeline installation per kilometer should not exceed 3M
in general, the gradient of the pipeline will be given in the drawing. If not, it will also be reflected in the design description, or ask the designer to check the corresponding standard acceptance specification.

5. Analysis: the positions to be installed are as follows
0 m, 100 m, 200 m, 300 m, 400 m, 500 m, 600 m
a total of seven positions need to be installed
so a total of seven positions need to be installed
hope to help you

6. The Yellow River originates from the Bayankala mountains on the Qinghai Tibet Plateau, where the longitude is about 90 degrees in winter °， The mouth of the Yellow River is the Bohai Sea, where the longitude is about 120 east longitude ° Longitude difference 15 °， The local time difference is one hour. The time difference between the two places is two hours.

7. Theoretically, there is no error. Only when the high supply high meter records the load energy, the variable loss and constant loss of the transformer are included, while the high supply low meter only records the load energy consumption.

9. The first floor answers the wrong place
the super-high cost is calculated according to the chapter and volume instructions, and according to the local implementation of the engineering quantity calculation rules and quota pricing rules
in Shandong area, the current quota is implemented, and the super-high cost is not included in the rust removal, anti-corrosion and thermal insulation of the pipeline within 5 meters, only the scaffold erection and dismantling cost, For pipeline installation, instrial projects shall be subject to Volume 6 of the above quota; for civil projects, it shall be subject to volume 8; for operation height over 3.6m, it shall be subject to labor cost; for other areas, it shall be similar

10. Crane rail installation standard I, crane rail, rail standard length: 9m, 9.5m, 10m, 10.5m, 11m, 11.5m, 12M, 12.5m 1, relative elevation deviation of two rails & lt; 2. Longitudinal inclination of track 1 / 1500 3. Height deviation of track joint; 1 mm. Measure with steel ruler and feeler gauge. 4. The left and right dislocation deviation of track joint is 10 m, △ s= ± [ 3 + 0.25 (S-10)] mm, maximum ≤ 15mm, measure the distance between the outer side of one side of the guide rail and the outer side of the other side of the guide rail at the same height, and take the average value after three times of measurement. 7. The clearance of the track joint is usually 1-2mm; When installing in the area with temperature difference of 20 ℃ or in winter, 4-6mm feeler gauge shall be used to measure the direct head or 45 ° When the rail has a small transverse crack, it is connected with fishplate. Generally, there are 4-6 fishplate connecting bolts; Longitudinal and oblique cracks are discarded. 2、 Standard length of trolley track and rail: 9m, 9.5m, 10m, 10.5m, 11m, 11.5m, 12M, 12.5m 1. Relative elevation deviation of two tracks 1500 3 Measure the height deviation of track joint ≤ 1mm with steel ruler and feeler gauge; measure the left and right dislocation deviation of track joint ≤ 1mm with steel ruler and feeler gauge; measure 5 parallel track joints staggered ≥ 500mm; measure 6 track span deviation with steel tape; the end of track span deviation is ± 2mm In the middle of span, when s ≤ 19.5m, △ s = + 1 - + 5mm; S> 19.5m ，△S=+1 ～ +7mm Other beams ≤ ± 3mm, measure the distance between the outer side of one side guide rail and the outer side of the other side guide rail at the same height, take the average value less than 50t for three times, and measure the clearance e ≤ 2mm of the normal rail box girder and semi deviated rail box-2-girder 7 rail joint, and use the steel ruler and feeler gauge to measure the direct head or 45 ° Inclined joint 8 torsion ≤ 1.5mm 9 rail bending deviation ≤ 3mm 10 rail top surface and side wear (one side) ≤ 3mm 11 end rail length ≥ 1.5m use steel tape to measure the end with stop block 12 rail proce small transverse cracks, use fishplate connection, fishplate connection bolts generally 4-6; Longitudinal and oblique cracks are discarded. Each group of pad iron of 13 trolley track shall not exceed 2 pieces, the length shall not be less than 100 mm, the width shall be 10-20 mm wider than the rail bottom, the spacing between the two groups shall not be less than 200 mm, the actual contact area between the pad iron and the rail bottom shall not be less than 60% of the nominal contact area, and the local clearance shall not be more than 1 mm. Note: the straightness of the track can be checked by pulling steel wire, that is, pulling a 0.5mm steel wire on the car stop at both ends of the track, and then measuring point by point with the method of wire hammer, with an interval of about 2m. The elevation of track can be measured by level instrument. The span of the rail is checked with steel tape. One end of the tape is fixed with a clamping plate, and the other end is tied with a spring scale. The tension of the scale is 98n for the crane with a span of 10-19.5m, 147n for the crane with a span of 22-31.5m, and measured once every 5m. Before the measurement, a punching hole is made in the middle of the rail, and the tension of the spring scale at each measuring point is the same.