TR.19 User Steel Table Specification
STAAD.Pro allows you to create and use customized steel section tables for use in the property specification, code checking, and member selection. This set of commands may be used to create the tables and provide necessary data.
General Format
START USER TABLE
TABLE i1 (fn)
section-type
The following commands are repeated for each section within the user-table.
section-name
property-spec
For General sections, the following may be specified for each section:
(PROFILE_POINTS
zp1 yp1 zp2 yp2 … zpn ypn )
(STRESS_LOCATIONS
zs1 ys1 zs2 ys2 zs3 ys3 zs4 ys4 )
All tables end with the following command:
END
Where:
| Parameter | Description |
|---|---|
| i1 | table number (1 to 99). During the analysis process, the data in each user provided table is stored in a corresponding file with an extension .U0n . For example, the data of the 5th table is stored in .U05. The first part of the input file name is the same as that of the STAAD input file. These files are located in the same working directory as the input file. Hence, they may later be used as external user provided tables for other input files. |
| fn | external file path and file name containing the section name and corresponding properties (up to 70 characters). If an external file is used, the no other data should be provided for this table. |
| section-type | a steel section name including: WIDE FLANGE, CHANNEL, ANGLE, DOUBLE ANGLE, TEE, PIPE, TUBE, GENERAL, ISECTION, & PRISMATIC. |
| section-name | Any user designated section name, use 1 to 36 characters observing the following rules:
|
| property-spec | Properties for the section. The requirements are different for each section type as follows. Shear areas AY and AZ must be provided to ensure proper shear stress or shear strength calculations during design. |
The default length units for properties are the current units. If a UNIT command is entered within the User Table in the input file then those units become the current units. However, a UNIT command on an external file only affects that file and has no effect on the units in subsequent input file commands. You may specify the desired length unit by using the UNIT command as the first command in the table (see example following this description).
If data is from input file, then use up to three lines of input per property-spec (end all but last with a hyphen, - ).
General Section Definitions
The commands PROFILE_POINTS and STRESS_LOCATIONS can be used with a user-table general shape only. These define the vertices of a closed shape and the four locations to calculate stress, respectively.
- zp1 yp1 zp2 yp2 … zpn ypn are the X and Y pair of local coordinates which describe the points of the section. The points should be provided in either clockwise or counter-clockwise order.
- zs1 ys1 zs2 ys2 zs3 ys3 zs4 ys4 are the X and Y pair of local coordinates which indicate where the stress is calculated. It is recommended that these start with the top,left-most point. The extreme points of the cross-section are then specified in a clockwise order around the section. Though any coordinates may be entered, points should lie on the section defined in order to represent true stress values.
Example
START USER TABLE TABLE 1 UNIT INCHES KIP WIDE FLANGE P24X55-abcdefghijklmnopqrstuvwxyz111 16.2 23.57 0.375 7.005 0.505 1350 29.1 1.00688 8.83875 7.07505 P24X56 18.3 20.99 .4 8.24 .615 1330 57.5 1.83 0.84 7.0 END START USER TABLE TABLE 2 GENERAL L6x6x1 11 6 0 6 0 35.4621 35.4621 3.40525 8.57326 8.57326 5.09239 - 5.01615 21.4489 10.9903 8.98521 6 PROFILE_POINTS -1.86364 4.13636 -0.863636 4.13636 -0.863636 -0.863636 4.13636 -0.863636 4.13636 -1.86364 -1.86364 -1.86364 STRESS_LOCATIONS -1.8636 4.13636 -0.8638 -0.8636 4.13636 -1.8636 -1.8636 -1.8636 END … MEMBER PROPERTY 27 UPTABLE 1 P24X55-abcdefghijklmnopqrstuvwxyz111 39 UPTABLE 1 P24X56
The following example uses an external file, C:\Structural Models\My_Profile.upt (exported from Section Wizard), as the data source for a general section:
START USER TABLE TABLE 1 C:\STRUCTURAL MODELS\MY_PROFILE.UPT