(1) the construction allowable error larger, aluminum honeycomb construction precision is very high, so it can not completely rely on the construction of the baseline level, must be measured by the reference axis and leveling points, check and correction.
(2) according to the design, determine the location of the curtain wall and the location of the grid line.
(3) use the theodolite or laser vertical instrument to draw the positive angle and the negative angle of the curtain wall, and use the steel wire fixed on the steel bracket as the mark control line.
(4) use level instrument and standard steel tape measure to bring out each layer of mark height line.
1) determine the middle line of each facade.
2) the measurement error should be controlled and the error can not be accumulated.
3) measurements shall be carried out at a level of no more than 4 winds, and typhoon protection shall be taken.
4) to control line timing check line positioning, to ensure that the honeycomb aluminum curtain wall verticality and the correct position of the metal mullion.
All Wailimian decoration projects should be unified benchmark line, and pay attention to construction coordination.
2 installation of column
The first column is connected with the connecting piece, and then the connecting piece is connected with the main embedded parts, and adjusted and fixed. Column installation elevation deviation should not be greater than 3mm, the axis deviation should not be greater than 2mm, the deviation should not be greater than 3mm. The deviation of installation elevation of two adjacent columns shall not be greater than 3mm, the maximum elevation deviation of the same column shall not be greater than 5mm, and the distance deviation of two adjacent posts shall not be greater than 2mm.