What does a row of parallel bars in a column table mean

A row of parallel bars in a column table means:

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When the number of ordinary rebars to be placed in the member is too large to meet the requirement of rebar spacing according to the conventional method of laying out the rebars, which causes difficulties in design and construction, or when it is impossible to meet the reinforcement requirements due to the specification of large-diameter rebars, the concatenation of rebars can be used to bind two or three rebars into a Cambodian.

If the construction drawings are not clear for and tendons, the actual situation on the site does not use and tendons vertical column reinforcement and spacing is large enough, then it belongs to the construction unit construction quality reasons, need to supervisory engineers to correct this violation of the construction phenomenon in a timely manner.

Expanded information:

Columns and tendons are mentioned in the Concrete Structure Design Code. Design Code for Concrete Structures (GB50010-2010):

1, and tendons refers to the solution to the inability to obtain sufficient diameter reinforcing steel and reinforcing dense design, construction difficulties caused by the arrangement of several steel bars together. Also refers to the arrangement of steel bundles with this arrangement.

2, the maximum diameter of the steel bar and the number of bars applied to the bar limitations: the diameter of 28mm and the following number of bars and bars should not be more than 3; the diameter of 32mm and the number of bars and bars should be 2; 36mm diameter and above should not be used in the bar and bars.