7.10.2.1 IfcActionSourceTypeEnum

7.10.2.1.1 Semantic definition

This enumeration type contains possible action sources.

7.10.2.1.2 Type values

Type	Description
`BRAKES`	Brakes
`BUOYANCY`	Buoyancy.
`COMPLETION_G1`	Completion.
`CREEP`	Forces due to creep.
`CURRENT`	Current.
`DEAD_LOAD_G`	The structure carries the dead load, which includes its own weight, the weight of any permanent non-structural partitions, built-in cupboards, floor surfacing materials and other finishes.
`EARTHQUAKE_E`	Earthquake loads affect the design of structures in areas of great seismic activity.
`ERECTION`	Loads on the facility that occur during erection, but not after completion.
`FIRE`	Fire action on the build facility.
`ICE`	Loads from ice.
`IMPACT`	Impact force from an object hitting the facility.
`IMPULSE`	Load from impulse force.
`LACK_OF_FIT`	Lack of fit.
`LIVE_LOAD_Q`	All the movable objects in a building such as people, desks, cupboards and filing cabinets produce an imposed load on the structure. This loading may come and go with the result that its intensity will vary considerably. At one moment a room may be empty, yet at another packed with people.
`PRESTRESSING_P`	Presstressing load.
`PROPPING`	Propping
`RAIN`	Rain and water on the structure.
`SETTLEMENT_U`	If one part of a building settles more than another part, then stresses are set up in the structures.
`SHRINKAGE`	Loads from shrinkage.
`SNOW_S`	The magnitude of the snow load will depend upon the latitude and altitude of the site. In the lower latitudes no snow would be expected while in the high latitudes snow could last for six months or more.
`SYSTEM_IMPERFECTION`	Loads from imperfections in the system.
`TEMPERATURE_T`	All building materials expand or contract with temperature change. Long continuous buildings will expand, and it is necessary to consider the expansion stresses.
`TRANSPORT`	Loads from transport.
`WAVE`	Loads from a wave hitting the structure.
`WIND_W`	The wind acts both on the main structure and on the individual cladding units. The structure has to be braced to resist the horizontal load and anchored to the ground to prevent the whole building from being blown away, if the dead weight of the building is not sufficient to hold it down.
`USERDEFINED`	User defined. See objectType for user defined type.
`NOTDEFINED`	Not defined.

Table 7.10.2.1.A

7.10.2.1.3 Formal representation

TYPE IfcActionSourceTypeEnum = ENUMERATION OF
	(BRAKES
	,BUOYANCY
	,COMPLETION_G1
	,CREEP
	,CURRENT
	,DEAD_LOAD_G
	,EARTHQUAKE_E
	,ERECTION
	,FIRE
	,ICE
	,IMPACT
	,IMPULSE
	,LACK_OF_FIT
	,LIVE_LOAD_Q
	,PRESTRESSING_P
	,PROPPING
	,RAIN
	,SETTLEMENT_U
	,SHRINKAGE
	,SNOW_S
	,SYSTEM_IMPERFECTION
	,TEMPERATURE_T
	,TRANSPORT
	,WAVE
	,WIND_W
	,USERDEFINED
	,NOTDEFINED);
END_TYPE;

7.10.2.1.4 References

IfcStructuralLoadGroup