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How to use the laser vertical alignment instrument:
1. The setting of ± 0.00 floor control point is very important. Firstly, the best control line should be determined according to the shape and structure of the project. Secondly, choose the most reasonable control point position on the control line. The control points must avoid reinforced concrete components and other unfavorable factors that affect intervisibility. Ensure good intervisibility between points.
2. After the preliminary determination of the point, pay attention to see the structural drawing of the upper part of the point clearly to ensure the safety of the point
The projection above the vertical position is on the surface of the concrete slab. Due to the fact that the structure is staggered, it is necessary to ensure that
Each floor can be projected onto the floor.
Will be consistent with the accurate verification point 3. The accuracy of ± 0.00 floor points directly determines the axis projection accuracy of the main structure.
4. after the upper formwork is supported, before reinforcing steel is helped, the control point position shall be hoisted on the formwork, and 150 * 150 holes shall be reserved. Make sure you dig in the air.
5. After concrete pouring, when the upper axis is measured. Erect plumb meter at control point and align it
The laser beam is projected upward from the point, and the upper layer is received by the laser receiving target. And rotate the plumber
360 ° to see its eccentricity, take the center to carry out the survey of the floor.
6. Do a good job in the protection of ± 0.00 layer control points to ensure that they are not damaged. Plumb meter is more suitable for high-rise buildings, and the accuracy of internal control is higher;
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