INSTALLATION OF PREFABRICATED CONCRETE AND CONCRETE STRUCTURES 3. Installation of columns and frames

  INSTALLATION OF PREFABRICATED CONCRETE AND CONCRETE STRUCTURES 3. Installation of columns and frames

The design position of the columns and frames should be calibrated in two mutually perpendicular directions.
The bottom of the columns should be calibrated, combining the risks that designate their geometric axes in the lower section, with the risks of the center axes or geometric axes below the installed columns.
The method of supporting the columns to the bottom of the glass should ensure that the bottom of the column is secured from horizontal movement for the period before the installation of a monolith.
The top of the columns of multi-storey buildings should be calibrated, combining the geometric axes of the columns in the upper section with the risks of center axes, and the columns of single-story buildings - combining the geometric axes of the columns in the upper section with geometric axes in the lower section.
The alignment of the bottoms in the longitudinal and transverse directions should be carried out by combining the scratches of the geometrical axes with the risks of the center axes or the axes of the struts in the upper section of the lower frame.
Alignment of the upper frames should be carried out: from the plane of the frames - by combining the scratches of the axes of the racks of the frames in the upper section relative to the centering axes, in the plane of the frames - by observing the marks of the supporting surfaces of the frames.
The use of gaskets not foreseen by the project in the joints of columns and racks of the frames for leveling elevations and bringing them to a vertical position without agreement with the project organization is not allowed.
Landmarks for alignment of the top and bottom of the columns and frames should be indicated in the CPD.

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