D6.A.5 Design Parameters

The design parameters outlined in the following table may be used to control the design procedure. These parameters communicate design decisions from the engineer to the program, thus allowing the engineer to control the design process to suit an application's specific needs.

The default parameter values have been selected as frequently used numbers for conventional design. Depending on the particular design requirements, some or all of these parameter values may be changed to exactly model the physical structure.

Note: 一度パラメータを設定すると、その値は再度設定されるまで設定されたその数のままです。これはSTAAD.Proで、すべてのコードに対してあてはまります。

Table 1. French Steel Design Parameters
Parameter Name	Default Value	Description
CODE	FRENCH	準拠する設計コード。「TR.48.1 パラメータの設定」を参照してください。
BEAM	0.0	0) design only for end moments and those at locations specified by `SECTION` command. 1) calculate moments at tenth points long the beam, and use maximum Mz for design.
C1	1.0	Parameter used in clause 5.21 in the calculation of M(D), the critical twisting moment and as shown in CM 66 Addendum 80, table 5, usual range from 0.71 to 4.10
C2	1.0	Parameter used in clause 5.21 in the calculation of M(D), the critical twisting moment and as shown in CM 66 Addendum 80, table 5, usual range from 0.0 to 1.56
DFF	None (Mandatory for deflection check)	"Deflection Length" divided by the Maximum allowable local deflection
DJ1	Start Jointof member	Joint No. denoting starting point for calculation of "Deflection Length" (See Note 1)
DJ2	End Joint of member	Joint No. denoting end point for calculation of "Deflection Length" (See Note 1)
DMAX	100.0 cm.	Maximum allowable depth (used in member selection).
DMIN	0.0 cm.	Minimum allowable depth (used in member selection).
FYLD	250.0 MPa	Yield strength of steel.
KY	1.0	K value for axial compression buckling about local Y-axis. Usually, this is the minor axis.
KZ	1.0	K value for axial compression buckling about local Z-axis. Usually, this is the major axis.
LY	Member Length	Length to calculate slenderness ratio about Y-axis for axial compression.
LZ	Member Length	Length to calculate slenderness ratio about Z-axis for axial compression.
NSF	1.0	Net section factor for tension members.
RATIO	1.0	Permissible ratio of actual load effect and design strength.
SAME	0.0	Controls the sections to try during a SELECT process. 0) Try every section of the same type as original (see note a below) 1) Try only those sections with a similar name as original, e.g., if the original is an HEA 100, then only HEA sections will be selected, even if there are HEM’s in the same table.
TRACK	0.0	Level of detail in output: 0) Suppress printing of all design strengths. 1) Print all design strengths
UNF	1.0	曲げねじり座屈の計算に使用される、実際のメンバー長の割合として与えられる支点間距離。 Note: `UNF`パラメーターと`UNL`パラメーターの両方を指定した場合、使用される有効座屈長さは`UNF`×`UNL`です。
UNL	Member Length	許容曲げ応力を計算するための支点間距離。曲げねじり座屈の計算に使用されます。値は現長さ単位のものです。

For angles, if the original section is an equal angle, then the selected section will be an equal angle and vice versa for unequal angles.