Steel Column Installation

Steel Column Installation

1. Preparation for hoisting:

   Before the steel column installation is hoisted, check the incoming components according to the component schedule, check the quality certificate and design change documents, check the deformation caused by the acceptance components during transportation, and record them, and correct the problems in time to meet the regulations. For the foundation and embedded parts, the position of the review axis, high and low deviation, flatness, and elevation should be checked first, and then the cross-center line and the reference level should be ejected, and the qualified data of the foundation acceptance must be obtained. Because it involves the two aspects of steel structure production and installation, and the relationship between civil construction and steel structure, the measurement tools must be unified. 

    

2. Hoisting method:

   When hoisting, the vertical components are hoisted first, and then the plane components are hoisted to reduce the cumulative error of the longitudinal length installation of the building.

    
   

3. Steel column positioning:

   Before the steel column is installed, the steel column must be positioned, the details and acceptance must be checked, and the number, external dimension of the steel column must be fully reviewed. Ensure compliance with design drawings.

    
   

4. Steel column installation:

   Before the steel column is lifted, the sling, wind rope, ladder, slip rope and fall arrester are fixed on the steel column. The upper end of the steel column is used to connect the ear-plate and the hanger plate for lifting, and the crane is lifted into place.

   
   

5. Steel column correction:

   After the crane is unhooked from the steel column, use a theodolite to check the verticality of the steel column installation. If there is any deviation, immediately correct it. The verticality deviation should be controlled within 20mm. During the correction process, observe at any time whether the bottom and elevation control block are free of space to prevent horizontal elevation errors during the correction process. If the column is not vertical, you can command and adjust the rope or support, and you can use tapping and other methods to make the column vertical. In practical work, rows of columns are often erected and then corrected.

    
   

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