What is the allowable range of vertical deviation for tower cranes?
The specified installation, construction, demolition of tower crane safety technical regulations in JGJ196--2010: the allowable deviation of verticality Tower: in the wind under no-load, the tower axis line should be less than 4 per thousand of the bearing surfaces of the lateral vertical deviation; after the attachment, the highest attachment point following the vertical deviation should be less than 2 per thousand. According to the installation state of tower crane, the deviation range of verticality is divided into 4/1000 or 2/1000. Tower crane maximum independent installation height (maximum installation height, does not need to be attached to the wall of the instructions specified in the free end) and height (the highest point of a tower crane attached to the wall above the height, body the following provisions in the specification of tower crane slewing) the vertical deviation range was 4/1000; tower crane attachment verticality deviation below the allowable range is 2/1000.
The verticality deviation range of ZOOMLION tower crane is allowed within 4/1000.
Independent height 4/1000, attachment height 2/1000 under top wall!
Previous answers to this question have been made. In the industry standard "construction site inspection of machinery and equipment technical specification" (JGJ160-2008), in the form of mandatory provisions: the tower crane installation height to basic design requirements, the axis of the tower line should be no more than 0.4% of the bearing surfaces of the lateral vertical deviation; after the attachment, the highest attachment point following the vertical deviation should be less than 0.2%. "The basic height of the design requirements" in the "strong regulation", that is, the maximum independent installation height on the site".
