D12.B.3 Design Parameters
Design parameters communicate specific design decisions to the program. They are set to default values to begin with and may be altered to suite the particular structure.
Parameter Name  Default Value  Description 

CODE  none 
Must be specified as NORSOK. 
FYLD  235 [MPa] 
Yield strength of steel, f_{y} (St37) 
KY  1.0  Effective length factor, k, in local Yaxis, usually minor axis. 
KZ  1.0  Effective length factor, k, in local Zaxis, usually major axis. 
LX  Effective length for lateral torsional buckling.  
LY  Member Length  Length in local Y axis for slenderness value KL/r 
LZ  Member Length  Length in local Z axis for slenderness value KL/r 
CMY  0.85  Reduction factor C_{m} corresponding to the Y axis. 
CMZ  0.85  Reduction factor C_{m} corresponding to the Z axis. 
LSR  Length of Tubular between Stiffening Rings. This value is required to calculate Design Hoop Stress due to Hydrostatic Pressure to check Hoop Buckling as per clause 6.3.6.1.  
HYD  0.0 
The Ycoordinate, current units, of the maximum water level with respect to the origin. Note: If SET Z UP command has been specified, then yi will be the Z coordinate of the max water level.
For HYD > 0, the value of max. hydrostatic pressure calculated is reported for each member in a TRACK 2.0 output. 
PSD  0.0  Water pressure at each section in absence of HYD. 
SGR  0.0 
Steel Grade per EC3 (EN 199311:2005):

DMAX  100.0 [cm]  Maximum allowable depth of steel section. 
DMIN  0.0 [cm]  Minimum allowable depth of steel section. 
DFF  None (Mandatory for deflection check)  "Deflection length"/maximum allowable local deflection. 
MAIN  0.0 
Option to design for slenderness.

TMAIN  180.0  Slenderness limit in tension. Slenderness limit is checked based the MAIN parameter. 
FU  420 [MPa]  Ultimate Tensile Strength of Steel 
TRACK  0.0 
Output detail:

RATIO  1.0  Permissible ratio of the actual to allowable stresses. 
BEAM  0.0 
Beam segment locations for design:

DJ1  Start Joint of member  Joint No. denoting start point for calculation of deflection length 
DJ2  End Joint of member  Joint No. denoting end point for calculation of deflection length 
Notes

C1 and C2 Parameters
The default values of these coefficients are taken from Table 64 of N004 and depend on the joint and load type:
Table 2. Default values for C1 and C2 parameters Joint Type C1 C2 T or Y joints under brace axial load 25 11 X joints under brace axial load 20 22 K joints under balanced axial load 20 22 All joints under brace moment loading 25 30
Example
Note: This is a partial example containing only the information pertaining to the NORSOK N004 steel design code; used at the end of the input file.
* Check tubular members according NORSOK N004 CODE NORSOK HYD 3.0 MEMB 1 TO 3 PSD 10 MEMB 7 10 SGR 2 MEMB 1 TO 3 7 10 TRACK 2 MEMB 1 TO 3 7 10 CHECK CODE MEMB 1 TO 3 7 10