(1) For each cast-in-place beam section, elevation observation should be carried out under at least three working conditions, namely, after the hanging basket is in place and the formwork is erected, after concrete pouring and prestressed steel tendons are tensioned.
(2) In addition to model adjustment, the measurement time should generally be before the sun comes out in the morning (around 7 am).
(3) At the same time of elevation observation, we should observe the position of the central axis and the settlement of the pier and abutment, and make periodic observation according to the construction progress.
(4) When measuring the elevation and central axis of the beam section, if the corresponding errors between the field measured values and the predicted values on the measurement sheet are +/- 15mm (elevation) and 5mm (central axis deviation), the measurement shall be reported to the supervision and construction control group (linear control group), and the observation results shall be approved by the construction control group personnel and agreed by the supervision.
For more information about project/service/procurement bidding, and to improve the winning rate, please click on the bottom of official website Customer Service for free consultation:/#/? source=bdzd