D7.A.7 Design Parameters
You are allowed complete control over the design process through the use of parameters described in the following table. These parameters communicate design decisions from the engineer to the program. The default parameter values have been selected such that they are frequently used numbers for conventional design. Depending on the particular design requirements of the situation, some or all of these parameter values may have to be changed to exactly model the physical structure.
Parameter Name | Default Value | Description |
---|---|---|
CODE | - |
Must be specified as DIN18800. Design code to follow. See TR.48.1 Parameter Specifications. |
BEAM | 0.0 |
Number of sections to be checked per member:
|
CB | 0 | Beam coefficient n, defined in Table 9: If Cb = 0, program will use n = 2.5 for rolled sections and 2.0 for welded sections. |
CMM | 1.0 |
Moment factor, Zeta, defined in Table 10:
|
DMAX | 1.0 m | Maximum allowable depth during member selection |
DMIN | 0.0 m | Minimum required depth during member selection |
KY | 1.0 | K value in local y-axis. Usually, this is the minor axis. |
KZ | 1.0 | K value in local z-axis. Usually, this is the major axis. |
LY | Member Length | Length in local y-axis to calculate slenderness ratio. |
LZ | Member Length | Length in local z-axis to calculate slenderness ratio. |
PY | 240 N/sq.mm | Strength of steel. |
NSF | 1.0 | Net section factor for tension members. |
RATIO | 1.0 | Permissible ratio of actual to allowable stresses |
SAME | 0.0 |
Control of sections to try during a SELECT process:
|
SBLT | 0 |
Specify section as either rolled or built-up:
|
SGR | 0.0 |
Grade of steel:
|
TRACK | 0.0 |
Level of detail in output file:
|
UNF | 1.0 | Unsupported length provided as a fraction of actual member length used for lateral-torsional buckling calculation. |
UNL | Member Length | Unsupported length for calculating allowable bending stress. Used for the lateral-torsional buckling calculation. Value should be in the current units of length. |