Plate Column Design

Function

• Using the results obtained from the analysis of the entire structure and additional design data, automatically design concrete plate column members according to the AASHTO-LRFD 16 and Eurocode

Call

From the main menu, select [Design] tab > [Type : RC Design] > [Perform] group > [RC Code Design] > [Plate Column Design]

Input

The automatic design results of sub-domain are calculated for negative, positive bending moments and shear forces at five positions (4 corner nodes and center point) of each plate element in accordance with the load combinations for concrete design. The design results are then sorted based on the results that yield the maximum quantity of rebars computed at specific node of the elements within the sub-domain.

The results appear in blue when the automatic design for the given properties is satisfactory, otherwise they appear in red, which represent the results are unsatisfactory.

The plate design results are produced in the unit length selected by the user.

Sub-Domain : Name of sub-domain.

SEL : Select sub-domain for redesign and production of results.

Major Dir : Main rebar direction

CHK : Status of automatic design results (Results are produced in state for convenience.

The above symbols representing the status are combined to show "OK, OK++, OK--, etc.

Pos : The design results for Pos and Neg reflect the automatic design for maximum required reinforcement area for
the positive and negative bending moment respectively.

Req_As : The area of required rebars (LengthUnit2 / LengthUnit) for the bending moment calculated by the program.
The larger of the calculated rebar area is presented.

Elem. : Element number.

Node : Node number.

LCB_M : Load combination which causes the maximum required reinforcement due to bending moment of specific sub-domain.

Mu : Maximum factored bending moment occurring in the node of element of relevant sub-domain under the load combination
displayed in LCB_M.

Mr : Bending moment resistance calculated by the program of the plate element.

Ratio_M : Ratio of the factored bending moment to the design bending moment strength. The ratio larger than 1 signifies,
the design is unsatisfactory.

LCB_P : Load combination which causes the maximum factored axial force in the relevant sub-domain.

Pu : Maximum factored axial force acting on the plate column member occurring in the node of element of relevant sub-domain under the load combination displayed in LCB_P.

Pr : Nominal axial strength of the plate element.

LCB_V : Load combination which causes the maximum required reinforcement due to shear force of specific sub-domain.

Vu : Maximum factored shear force occurring in the node of element of relevant sub-domain under the load combination
displayed in LCB_V.

Vr : Shear force resistance calculated by the program of the plate element.

Ratio_V : Ratio of the factored shear force to the design shear strength. The ratio larger than 1 signifies, the design is
unsatisfactory.

As_V : The quantity of shear rebars auto-calculated by the program of the sub-domain from the inputted stirrup data.

Stirrup : Size and spacing of stirrup provided by the user.

Thee main purpose of plate design feature is culvert and abutment. Axial force is not critical when we are designing culvert or abutment/side wall. This feature does not consider the benefit of axial force in calculation of flexural strength. Therefore the calculation
of axial resistance is only provided in plate column checking mode.

From Civil 2018 v2.1, Axial-Moment Interaction can be considered as an option for plate column design and checking. This feature is available for AASHTO-LRFD12 and Eurocode. The result of P-M Interaction curve can be obtained from graphic result.

Common Control

: Display the applicable code for strength verification.

: Display the unit system selected by the user.

: Select all members

: Cancel the selection of all members

Re-verify the strengths of the selected members. When the strength re-verification is executed from the results displayed by section properties all the elements attributed to the same sections are included

: Display detail strength verification results

: Display simplified strength verification results

: Produce the strength checking results in summary calculations for the selected members

: Produce the strength verification results in detail calculations for the selected members.
The design results "Sorted by Element" support the detail calculations .

All : Produce all the strength checking results in the Checking Results dialog box

OK : From the strength checking results, display only the checking results that have met the design requirements (OK) in the Checking Results dialog box

NG : From the strength checking results, display only the checking results that have not satisfied the design requirements (NG) in the Checking Results dialog box

: Check in the option to select and highlight the selected members in Model View.

: Close the dialog box.