Column Parameters
- Zeynep Aladağ
- oğuzcan hadim
With the Column Parameters command, the design parameters used in the Concrete Column Design are determined. Concrete cover, rebar overlap length, maximum and minimum stirrup interval and percentage etc. parameters are determined from the column parameters window. The option to calculate the required reinforcement in the columns with the fiber model is also available in this window.
Location of Column Parameters Dialog
Ribbon menu Analysis and Design tab Design Parameters title under Column Parameters by clicking the command Column Parameters can be found in the dialogue.
Column Parameters
It determines with parameters which criteria the program will comply with in the elements' concrete design and rebar placement stage.
In parameters marked with ( * ), the text 0 “zero” means that the value specified in the design code is used.
Parameters with the ( % ) sign mean the percentage expression of the rebar ratio. It is the ratio of the cross-sectional area of the reinforced concrete element to the rebar area expressed as a percentage.
For example, when a “1” is written to the minimum percentage parameter, the rebar percentage is considered 1%. Since the percentage equivalent of a 0.01 rebar ratio is 1%, it is appropriate to write “1” to this parameter.
Specifications |
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Concrete cover It is the distance from the center of gravity of the reinforcement inside the column to the outer face of the concrete. |
Min. percentage The rebar percentage determines the minimum value of the longitudinal rebar that is to be placed in the column. The percentage value of the gross area of the column specified in this parameter determines the minimum rebar area. The minimum rebar area of the concrete element means that the gross section will not be less than the percentage value entered with this parameter. In parameters marked with ( * ), the text 0 “zero” means that the value specified in the code used is used. For example, when TBDY 2018 is selected and zero is written to the minimum percentage value, the rebar percentage is considered 1%. |
Max. percentage The rebar percentage determines the maximum value of the longitudinal rebar that is to be placed in the column. The percentage value of the gross area of the column specified in this parameter determines the maximum rebar area. The maximum rebar area of the concrete element means that the gross section will not exceed the percentage value entered with this parameter. In parameters marked with ( * ), the text 0 “zero” means that the value specified in the code used is used. |
Min. stirrup interval In the program, the range of stirrups to be placed in the middle of the column is selected at least as high as the value specified in this parameter. The conditions given for the coiling-joining-middle zone ranges are also controlled automatically so that they are at least as high as the regulations. In parameters marked with ( * ), the text 0 “zero” means that the value specified in the design code is used. |
Max. stirrup interval In the program, the range of stirrups to be placed in the middle of the column is selected to not exceed the value specified in this parameter. The conditions given for the coiling-joining-middle zone ranges are also controlled automatically so that they are not less than the regulations. In parameters marked with ( * ), the text 0 “zero” means that the value specified in the design code is used. |
Jacket percentage If the "Use jacket percentage as minimum" option is not checked, the program places the rebar as the pursmail value written in this line as jacket rebar on the column. |
Use jacket percentage as minimum If this option is not selected, the program places the rebar in the column as the pursmail value written in the "jacket percentage" line as jacket rebar. If the option is selected, the reinforced concrete calculation of the jacket is made and the rebar calculated in the jacket percentage is compared with the rebar resulting from the calculation. The amount of rebar is placed in the column as mantle rebar whichever is greater. |
Column lower embracement region is 1.5lb The column coiling zone is valid when it is made at the lower end of the column. If marked, the column wrap region is calculated as 1.5lb and the wrap region stirrups are drawn to this value. (Lb is TS500 overlap length distance.) |
Use upper story element reinforcements as minimum on lower story As a result of the analysis, if the strength of the columns in the upper story is more than the rebar of the lower story columns; It makes the rebar of the columns in the lower story equal with the columns in the upper story. |
Apply high ductile transverse reinforcement design even for normal/limit ductile systems If it is marked, the stirrup design of the columns of the normal ductile structure is made according to the highly ductile building materials. |
Calculate required reinforcement using model If marked, the required longitudinal reinforcement area in reinforced concrete columns is calculated by defining appropriate concrete and reinforcement models and section fiber in the column cross section. |
Generate separate connection bars to lower story if column rebars do not align If it is marked, anchor rods to be connected to the lower story are created separately in cases where the column rebars are not aligned. |
Vertical rebar overlap lenght The column allows the determination of the vertical reinforcement development length. |
Double stirrup type Column stirrup type is determined. Mark the type of stirrup you want to use. |
Longitudinal rebars bending In the last story columns, the end shape of the column rebar is selected. |
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