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D13.C.4 Design Parameters

Table 1. Design parameters for design of steel members per SP 16.13330.2011
Parameter Name Default Value Description
CODE -

Must be specified as RUSSIAN 2011

Design code to follow. See TR.48.1 Parameter Specifications.

BEAM 1

Member design parameter:

  • 0. Design member for forces at their ends or at the sections defined by the SECTION command ( TR.41 Section Specification ).
  • 1. Calculate the major axis moment, Mz, and 13 points along the beam and design the beam the location of the maximum Mz value.
  • 2. Same as BEAM = 1, but additional checks are carried out at beam ends and at critical intermediate sections.
  • 3. Calculate forces at 13 points and perform design checks at all locations, including at ends
BMT   Bimoment for design of eccentrically loaded members per clause 8.4 or members subjected to two bending moments per clause 8.2.
CB 1

Location of loading on the beam:

  • 1. top flange
  • 2. bottom flange
CMM 0

Slenderness limit for tension members:

  • 0. suppress slenderness check
  • 1. 150
  • 2. 200
  • 3. 250
  • 4. 300
  • 5. 350
  • 6. 400
CMN 0

Ultimate slenderness for compression members. Limits as per SP 16.13330.2011 clause 10.4, Table 32:

  • 0. suppress slenderness check
  • 1. 180-60a
  • 2. 120
  • 3. 210-60a
  • 4.220-40a
  • 5. 220
  • 6. 180-60a
  • 7. 210-60a
  • 8. 200
  • 9. 150

where a = alpha calculated as defined in SP 16.13330.2011 Table 32.
DFF None

"Deflection Length" / Maximum allowable local deflection
DJ1 Start Jointof member  
DJ2 End Joint of member  
DMAX 1,000 in Maximum allowable section depth
DMIN 0 Minimum allowable section depth
ENMAIN 1 The number of the steel standard taken from Table 3.1 in EN 1993-1-1: 2005
ENSGR 1 The number of the steel grade from Table 3.1 in EN 1993-1-1: 2005. D5.C.6 Design Parameters for values. Also, see Note 1 below.
GAMC1 1.0 Specific service condition coefficient for buckling design
GAMC2 1.0 Specific service condition coefficient for strength design
GAMM 1.0 Specific partial coefficient for steel for European . Refer to D13.C.1 General for details.
GMF 1.0 Ratio between design and characteristic load value
KY 1.0 Coefficient of effective length in respect to local axis Y (in plane XZ)
KZ 1.0 Coefficient of effective length in respect to local axis Z (in plane XY)
LEG 4

Describes the type of and position of loading on the beam:

  • 1. concentrated in middle of the span
  • 2. concentrated in the quarter of the span
  • 3. concentrated at the end of bracket
  • 4. uniformly distributed along beam
  • 5. uniformly distributed on bracket
LY Member Length Effective length in respect to local axis Y (in plane XZ)
LZ Member Length Effective length in respect to local axis Z (in plane XY)
MAIN 1

Standard of steel grade (GOST):

  • 1. GOST27772-88
  • 2. GOST10705-80
  • 3. GOST10706-76
  • 4. GOST8731-87
  • 5. TY14-3-567-76
NSF 1.0 Net section factor for tension members or web section area weakening factor for bending members
PY 0

Design steel strength (yield strength)

Note: Used when parameters MAIN and SGR are not defined for Russian steel materials or ENMAIN and ENSGR for European steel materials. See Note 1 below.
RATIO 1.0 Permissible ratio of the actual capacities.
SBLT 0

Number of lateral bracing restraints along the span:

  • 0. beam is not fixed laterally
  • 1. singe restraint at mid-span
  • 2. or higher is the number of uniformly spaced lateral restraints along the span
SGR 1

Steel grade (STAL): See Note 1 below.

  • 1. S235
  • 2. S245
  • 3. S255
  • 4. S285
  • 5. S345
  • 6. S345K
  • 7. S375
  • 8. S390
  • 9. S440
  • 10. S590
  • 11. S590K
  • 12. VSt3kp
  • 13. VSt3ps
  • 14. VSt3sp
  • 15. VSt3ps4
  • 16. St3ps4
  • 17. 20
TB 1

Indication of stress strain state per Cl 4.2.7:

  • 1. 1st Class (Elastic)
  • 2. 2nd Class (Elasto-plastic)
  • 3. 3rd Class (Plastic)

The engineer shall consider the appropriate class of the member, as it is used in multiple checks under Ch.8. for elastic or elastic-plastic calculation for bending members (non-axially compressed or tensioned): Cl 8.2.1, Cl. 8.2.3, Cl. 8.4.1, Cl. 8.4.4, and Cl 8.4.6.
TRACK 0

Output details:

  • 0. suppressed output information
  • 1. extended output information for the critical section under the critical load case
  • 2. full output information for the critical section under the critical load case
UNL 0

Design steel strength (ultimate strength)

Note: Used when parameters MAIN and SGR are not defined.

Notes

  1. It is common practice to design only Russian or European shapes to the SNiP codes. For Russian steel sections, the steel design strength value, Ry, of a particular steel grade can be obtained from Table C.5 of SP 16.13330.2011 and is used for the SGR parameter. For European sections, the ENSGR and ENMAIN parameters are used accordingly. The ENSGR parameter is valid only with a corresponding value of the ENMAIN parameter when specifying European steel grades. If steel sections from other countries must be used, the PY parameter is used to specify the steel strength.
Parent topic: D13.C. Russian Codes - Steel Design Per SP 16.13330.2011