Tensioningjack, oil gauge shall be checked and calibrated prior to the prestressed steel strands tensioning and executed to check and calibrate in using as per the specified procedure.
张拉千斤顶、油表在预应力钢束张拉前进行检验和标定，使用中按规定程序进行送检标定。
2
The preliminary tensioning of the horizontal restraints of dome and cylinder wall is made with equal stress while the principal tensioning is executed with C1500F jack.