When checking or designing structures, Steel Designer uses sections properties stored in the Sections Library. The key properties used by Steel Designer are:
|
Name |
Property |
|
A |
Cross sectional area |
|
Ix |
Major moment of inertia |
|
Iy |
Minor moment of inertia |
|
E |
Young's Modulus |
|
D |
Depth |
|
B |
Breadth or Width |
|
tf |
Flange thickness |
|
tw |
Web thickness |
|
rx |
Major radius of gyration |
|
ry |
Minor radius of gyration |
|
rz |
Radius of gyration about weakest axis |
|
Sx |
Plastic modulus about major axis |
|
Sy |
Plastic modulus about minor axis |
When you add a section to the Sections Library you must ensure that all of the properties above are correctly entered and are all non-zero.