8.4.3.2 IfcCostValue

8.4.3.2.1 Semantic definition

IfcCostValue is an amount of money or a value that affects an amount of money.

Each instance of IfcCostValue may also have a category. There are many possible types of cost value that may be identified. While there is a broad understanding of the meaning of names that may be assigned to different types of costs, there is no general standard for naming cost types nor are there any broadly defined classifications.

The following defines some cost categories that might be applied to the Category attribute:

Annual rate of return
Bonus
Bulk purchase rebate
Contract
Consultancy
Delivery
Estimated cost
Hire
Installation
Interest rate
Labor
Lease
List price
Maintenance
Material
Overhead
Postage and packing
Profit
Purchase
Rental
Repair
Replacement
Sale
Small quantity surcharge
Spares
Storage
Sub-Contract
Trade discount
Transportation
Waste allowance
Whole life

8.4.3.2.2 Entity inheritance

8.4.3.2.3 Attributes

#	Attribute	Type	Description
IfcAppliedValue (11)
1	Name	OPTIONAL IfcLabel	A name or additional clarification given to a cost value.
2	Description	OPTIONAL IfcText	The description that may apply additional information about a cost value.
3	AppliedValue	OPTIONAL IfcAppliedValueSelect	The extent or quantity or amount of an applied value.
4	UnitBasis	OPTIONAL IfcMeasureWithUnit	The number and unit of measure on which the unit cost is based. Note: As well as the normally expected units of measure such as length, area, volume etc., costs may be based on units of measure which need to be defined e.g. sack, drum, pallet, item etc. Unit costs may be based on quantities greater (or lesser) than a unitary value of the basis measure. For instance, timber may have a unit cost rate per X meters where X > 1; similarly for cable, piping and many other items. The basis number may be either an integer or a real value. Note: This attribute should be asserted for all circumstances where the cost to be applied is per unit quantity. It may be asserted even for circumstances where an item price is used, in which case the unit cost basis should be by item (or equivalent definition).
5	ApplicableDate	OPTIONAL IfcDate	The date on or from which an applied value is applicable. IFC4-CHANGE Type changed from IfcDateTimeSelect.
6	FixedUntilDate	OPTIONAL IfcDate	The date until which applied value is applicable. IFC4-CHANGE Type changed from IfcDateTimeSelect.
7	Category	OPTIONAL IfcLabel	Specification of the type of cost used. NOTE There are many possible types of cost value that may be identified. Whilst there is a broad understanding of the meaning of names that may be assigned to different types of costs, there is no general standard for naming cost types nor are there any broadly defined classifications. To allow for any type of cost value, the IfcLabel datatype is assigned. In the absence of any well defined standard, it is recommended that local agreements should be made to define allowable and understandable cost value types within a project or region.
8	Condition	OPTIONAL IfcLabel	The condition under which a cost value applies. For example, within the context of a bid submission, this may refer to an option that may or may not be elected.
9	ArithmeticOperator	OPTIONAL IfcArithmeticOperatorEnum	The arithmetic operator applied to component values.
10	Components	OPTIONAL LIST [1:?] OF IfcAppliedValue	Optional component values from which AppliedValue is calculated.
	HasExternalReference	SET [0:?] OF IfcExternalReferenceRelationship FOR RelatedResourceObjects	Reference to an external reference, e.g. library, classification, or document information, that is associated to the IfcAppliedValue. IFC4-CHANGE New inverse attribute.

Table 8.4.3.2.A

8.4.3.2.4 Formal representation

ENTITY IfcCostValue
 SUBTYPE OF (IfcAppliedValue);
END_ENTITY;