General dialog
Used to specify the section dimensions and properties for a general polygonal user defined table section.
Opens when you click Add in the User Table Manager dialog when a General section table is selected.
Setting | Description |
---|---|
Section Name | Type a section name used to identify the shape in the table. |
Define Profile Polygon | Check this option to define polygon vertices by Z and Y coordinates
in the following table. You also have the option compute the section properties for the shape automatically based on the defined polygon. |
Compute Section Properties | Click to calculate the AX, D, B, IZ, IY, IX,
SZ, SY, AY, AZ, PZ, PY, HSS, and DEE values from the provided polygon
points. The points will be re-centered from the arbitrary origin used to the
center of gravity of the section. Note: TD
and TB values are not calculated and must be supplied.
Important: The calculated section
properties are about the geometric axis (Y and Z) as entered in the
coordinates. The program does not attempt to determine the major/minor
axes nor principal axes.
Additionally, B and D are measured from the extreme points entered along the Y and Z axes, respectively. |
OK | Saves the UPT section and closes the dialog. |
Cancel | Closes the dialog without creating a new section. |
Section property fields:
Setting | Description |
---|---|
AX | Cross section area |
D | Largest dimension parallel to the local Y axis (overall section depth along Y). |
TD | Thickness associated with section element parallel to Y axis (taken to be the web). To be used to check depth/thickness ratio of the web. |
B | Largest dimension parallel to the local Z axis (overall section width along Z). |
TB | Thickness associated with section element parallel to Z axis (taken to be the flanges). To be used to check width/thickness ratio of the flanges. |
IZ | Moment of inertia about local z axis |
IY | Moment of inertia about local y axis |
IX | Torsional constant |
SZ | Section modulus about local z axis (about the local y-axis for Z up) |
SY | Section modulus about local y axis (about the local z axis for Z up) |
AY | Shear area in local y-axis (about the local z axis for Z up) |
AZ | Shear area in local z axis (about the local y-axis for Z up) |
PZ | Plastic modulus about local z axis (about the local y-axis for Z up) |
PY | Plastic modulus about local y axis (about the local z axis for Z up) |
HSS | Warping constant for lateral torsional buckling calculations |
DEE | Depth of web between the flanges. For rolled sections, distance between fillets should be provided |
Note: Properties
PZ
,
PY
,
HSS
, and
DEE
must be provided for code checking or member
selection per plastic and limit state based codes (AISC LRFD, British, French,
German and Scandinavian codes). For codes based on allowable stress design
(AISC-ASD, AASHTO, Indian codes), zero values may be provided for these
properties.