StructuralLoadCombination

Load Combination

Object serves for definition a load combination. The combination is created from the existing load cases in the model, in StructuralLoadCase sheet.

Specification in the excel

Column header

Data type

Example / enum definition

Required

Description

Name

String

COM1

yes

Human readable unique name of the object

Description

String

variable_1 + dead load

no

The description of the load combination

Category

Enum

ULS (Ultimate Limit State)

SLS (Serviceability Limit State)

ALS (Accidental Limit State)

According national standard

Not defined

yes

The category of the load combination

National standard

Enum

EN-ULS (STR/GEO) Set B

EN-ULS (STR/GEO) Set C

EN-Accidental 1

EN-Accidental 2

EN-Seismic

EN-SLS

Characteristic

EN-SLS Frequent

EN-SLS Quasi-permanent

IBC-LRFD ultimate

IBC-ASD ultimate

IBC-ASD serviceability

IBC-ASD seismic

IBC-LRFD seismic

yes, If Category =According national standard

The National code application

Type

Enum

Envelope

Linear

Nonlinear

no, optional for Categories:

ULS (Ultimate Limit State)

SLS (Serviceability Limit State)

Not defined

For type ‘linear’, the exact content of the combination is presented.

For type ‘envelope’, linear combinations can be composed based on relations defined in StrucutralLoadGroup.

For type ‘nonlinear’, the exact content of combination is presented. Used for non-linear calculations. Other inputs like initial stress or deformation are to be set in analysis software.

Load factor #

double

1.35

yes, If Category is not “According national standard”

Load factor of the load case. # means indexing of the Load factor column, e.g. Load factor 1, Load factor 2, … Load factor 99. It depends on how many load cases are considered in the combination.

If the category is “According national standard”, then the load factor is expected to be set by the national standard in the software, not prescribed in SAF.

Multiplier #

double

0.9

yes

A multiplier for e.g. increase the selfweight of the structure . # means indexing of the Multiplier column, e.g. Multiplier 1, Multiplier 2, … Multiplier 99. It depends on how many load cases are considered in the combination.

Load case name #

String

LC1

yes

Valid name of the load case (StructuralLoadCase). # means indexing of the load case name column, e.g. Load case name 1, Load case name 2, … load case name 99. It depends on how many load case is considered in combination.

Id

String

39f238a5-01d0-45cf-a2eb-958170fd4f39

no

Unique attribute designation