What are the measured quantities of masonry?

What are the general requirements for the measured real squareness of masonry engineering?

1, index description: Considering the operability of the actual measurement, the distance deviation between the masonry wall in the same vertical plane in the same room and the square control line of the room is selected as the actual measurement index, which comprehensively reflects the square degree of the same room.

2. Qualification standard: [0, 10] mm.

3. Measuring tools: 5m steel tape, messenger wire or laser levels.

Me? Measurement method and data recording:

(1) A founder control datum line must be set on the same floor of each suite (to minimize the error of putright), and this founder control datum line must be adopted in each measuring area (i.e. each room) of the same suite, and then putright each measuring area (i.e. each room) according to this datum line;

(2) Before laying, the verticality control line will pop up within 30-60 cm away from the wall, and be clearly marked and protected.

(3) Take 1 measured area for the same wall, and the cumulative actual measurement is 10 measured area.

(4) In the same survey area, before the actual measurement, check the pop-up two vertical control lines with a 5-meter tape measure or laser levels, take the short side wall as the benchmark, and use laser levels to measure the distance between the three positions (both ends and middle) and the control line respectively along the long side wall, and make a reticle or messenger wire. Select the range between the three measured values as 1 calculation point, and judge the qualified rate of the measured indicators. If the kit does not have a square datum line or the deviation exceeds 5mm/2m, the measured values in all measuring areas in the kit are counted as unqualified and recorded as "50mm".

(5) When the measured area with extremely poor verticality in the selected two sets does not meet 10, it is necessary to increase the number of measured sets.