Function
- Use this function to modify a part of the steel rebar and concrete material property data, entered during the creation of the analysis model, or to change the material property data. Modifications that are made here will not affect the analysis results, but will only be used for automatic design and strength verification.
Call
From main menu, select [PSC] tab > [PSC Design Data] group > [PSC Design Material]
Input
Input values using the following dialog box.
Modify Concrete Materials dialog box
Material List
Display the steel rebar and concrete material properties entered during the creation of the analysis model. Select the material to be modified or changed.
Concrete Material Selection
Display the selected material properties and modify/change the material property data.
The material property data can be changed by using the material property database built-in the program or by directly entering the changed data.
Procedure for using the material property database
Select the relevant code and the material name with the mouse.
The reinforcing steel bar standards are specified similar to the concrete standards and may be changed by the user if necessary. That is, the concrete and rebar standards need not be the same.
Direct entry by the user
Select 'None' in the Code field and enter the name of the material to be used in the Name field. Then, each data field is activated and the following material property data can be entered.
Specified Compressive Strength(fc l fck l R) : Design compressive cylinder strength of concrete
When the Code is selected as 'None', the user can directly input the design compressive strength of concrete. This is extremely convenient for safety diagnosis or repair/reinforcement design, as it allows for the application of the actual compressive strength of the member.
Light Weight Concrete Factor (Lambda) : Input the lightweight concrete factor as specified in the concrete structure code.
Rebar Selection
Code : Select reinforcing steel standards
Grade of Main Rebar : Grade of main rebar
Fy : Yield strength of main rebar
Grade of Sub-Rebar : Grade of sub-rebar (stirrups & ties)
Fys : Yield strength of sub-rebar
Modify : Adjust the material data based on the values entered by the user.
Close : Apply the modifications and close the dialog box.
The concrete standards are classified into None, ASTM(RC), CSA(RC), BS(RC), EN(RC), NTC(RC), UNI(RC), GOST(RC), JIS(RC), GB(RC), GB-Civil(RC), KS(RC), KS-Civil(RC), IS(RC), etc...
If "None" is specified in the Code, the program applies the user-defined material properties to carry out the design.
When specifying material data based on Chinese or BS strength standards, the compressive strength of the concrete is based on the cube strength rather than the cylinder strength.
The material entered in PSC Design Material is only applicable to PSC Design.