ASTM E833-2008 809 Standard Terminology of Building Economics.pdf

《ASTM E833-2008 809 Standard Terminology of Building Economics.pdf》由会员分享，可在线阅读，更多相关《ASTM E833-2008 809 Standard Terminology of Building Economics.pdf（6页珍藏版）》请在麦多课文档分享上搜索。

1、Designation: E 833 08Standard Terminology ofBuilding Economics1This standard is issued under the fixed designation E 833; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A number in parentheses indicates

2、the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This terminology relates to the economic evaluation ofbuilding construction as used in other standards under thejurisdiction of ASTM Committee E06 on Performance ofBui

3、ldings, and it does not necessarily correspond to theterminology used in other areas of accounting and economics.DEFINITIONSadjusted internal rate-of-return (AIRR), nthe compoundrate of interest that, when used to discount the terminalvalues of costs and benefits of a project over a given studyperio

4、d, will make the costs equal the benefits when cashflows are reinvested at a specified rate (syn. financialmanagement rate of return (FMRR).allowance, nin construction design planning and estimating,an allocation of money that is intended to be spent for aspecific purpose.DISCUSSIONAn allowance is u

5、sed in the absence of precise knowl-edge, and estimated, to be of ones knowledge, to ensure a full andcomplete estimate. Allowances cover events and activities that arenormally directly controllable within a project plan.annual value, na uniform annual amount equivalent to theproject costs or benefi

6、ts taking into account the time value ofmoney throughout the study period (syn. annual worth,equivalent uniform annual value).annual worth, nSee annual value.annually recurring costs, nthose costs that are incurred ina regular pattern each year throughout the study period.base date, nSee base time.b

7、ase time, nthe date to which all future and past benefits andcosts are converted when a present value method is used(usually the beginning of the study period) (syn. base date).baseline plan, nan established scope, cost, schedule, andtechnical performance plan against which the status ofresources an

8、d the effort of the overall program or projectactivities are measured, assessed, and controlled.benefit-cost analysis, na method of evaluating projects orinvestments by comparing the present value or annual valueof expected benefits to the present value or annual value ofexpected costs.benefit-to-co

9、st ratio (BCR), nbenefits divided by costs,where both are discounted to a present value or equivalentuniform annual value (syn. benefit-cost ratio).break even analysis, na technique for determining thatvalue of a variable which results in benefits (savings) justequal to costs.building decision, na d

10、ecision regarding the design, financ-ing, engineering, construction, management, or operation ofa building.building economics, nthe application of economic analysisto the design, financing, engineering, construction, manage-ment, operation, ownership, or disposition of buildings.building system, nan

11、 aggregation or assemblage of itemsjoined in regular interaction or interdependence in buildingsor building construction.capital cost, nthe costs of acquiring, substantially improv-ing, expanding, changing the functional use of, or replacinga building or building system.cash flow, nthe stream of mon

12、etary (dollar) valuescostsand benefitsresulting from a project investment.certainty equivalent technique, na technique used to adjusteconomic measures of project worth to reflect risk exposureand risk attitude.DISCUSSIONEstimated project returns are multiplied by a certaintyequivalent factor (CEF) t

13、o determine the certainty equivalent amount adecision maker finds equally acceptable to the estimated projectreturns.code of accounts, na hierarchical, company-specific systemfor cost accounting, control, and management.Comprehensive Environmental Response, Compensation,and Liability Act (CERCLA), n

14、also known as “Super-fund,” CERCLA prescribes actions and regulatory require-ments for reducing risks to human health and the environ-ment resulting from releases or threatened releases ofhazardous substances into the environment.constant dollars, ndollars of uniform purchasing powerexclusive of gen

15、eral inflation or deflation.DISCUSSIONConstant dollars are tied to a reference year.1This terminology is under the jurisdiction of ASTM Committee E06 onPerformance of Buildings and is the direct responsibility of Subcommittee E06.81on Building Economics.Current edition approved Nov. 1, 2008. Publish

16、ed November 2008. Originallyapproved in 1981. Last previous edition approved in 2004 as E 833 06.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.construction contingency, nthe funds added to estimatedand known costs in case of cost o

17、verruns during construc-tion.construction documents, nmaterials that convey the physi-cal, aesthetic, technical, performance, and administrativerequirements necessary to initiate a contract for constructionof the proposed project.contingency, nin construction design planning and estimat-ing, a sum o

18、f money that is provided to cover the occurrenceof unintended departures from the planned scope of work.DISCUSSIONA contingency is used in the absence of preciseknowledge, and estimated, to be of ones knowledge, to ensure that afinancial buffer is available within a budget. Contingencies assist inmi

19、tigating the effects of unplanned events and other risks that arenormally not directly controllable within a project plan.cost analysis, nsubdividing the project estimate into com-ponent parts to find and compare their relationship topreviously established historical costs.cost effective, adjthe con

20、dition whereby the present valuebenefits (savings) of an investment exceeds its present valuecosts.cost limitations, nthe budget boundaries for project ele-ments.cost model, nthe description of the project divided intodiscrete elements showing quantities and unit price for eachelement.cost overruns,

21、 nin project design or construction, or both,the unanticipated increase in cost due to factors such asunanticipated site conditions, changes in the cost of buildingmaterials, labor, weather, and labor disputes.cost professional, nin project design or construction, orboth, a person engaged in the occ

22、upation of understanding,managing or estimating project costs, or a combinationthereof.current dollars, ndollars of purchasing power in whichactual prices are stated, including inflation or deflation.DISCUSSIONIn the absence of inflation or deflation, current dollarsequal constant dollars.deactivati

23、on, nthe process of placing a facility in a safe andstable condition to minimize the long-term cost of a surveil-lance and maintenance program and to protect the workers,the public, and the environment.decision analysis, na technique for making economic deci-sions in an uncertain environment that al

24、lows a decisionmaker to include alternative outcomes, risk attitudes, orsubjective impressions about uncertain events in an evalua-tion of investments.decommissioning, ntakes place after deactivation, and in-cludes surveillance and maintenance, decontamination, dis-mantlement, surveillance and long-

25、term monitoring, or anycombination thereof.decontamination, nthe removal of hazardous or radioactivematerial, or both, from facilities, soils, or equipment topreclude the occurrence of foreseeable adverse health ef-fects.design contingency, nin project design/construction, theamount of funds added t

26、o the estimated construction costs tocover unanticipated construction costs due to the incom-pleteness of the design, where the contingency is inverselyproportional to the level of completeness of the designdocumentation.design development, nthe phase of a project consisting ofdrawings and document

27、preparation to fix and describe thesize and character of the building systems, material, andelements.design program, nthe information detailing project func-tion, purpose, and characteristics inclusive of floor area,functional spaces, equipment, and building systems.desires, nthe functions that the

28、value analysis team deter-mines to be fulfilled if cost is not a factor, or functions whichdo not otherwise violate a constraint.differential price escalation rate, nthe expected percentdifference between the rate of increase assumed for a givenitem of cost (such as energy), and the general rate ofi

29、nflation.discounting, na technique for converting cash flows thatoccur over time to equivalent amounts at a common time.discount rate, nthe rate of interest reflecting the investorstime value of money, used to determine discount factors forconverting benefits and costs occurring at different times t

30、oa base time.DISCUSSIONThe discount rate may be expressed as nominal or real.discount factor, na multiplicative number (calculated froma discount formula for a given discount rate and interestperiod) that is used to convert costs and benefits occurring atdifferent times to a common time.discounted p

31、ayback (DPB) period, nthe time required forthe cumulative benefits from an investment to pay back theinvestment cost and other accrued costs considering the timevalue of money.economic evaluation methods, na set of economic analysistechniques that consider all relevant costs associated with aproject

32、 investment during its study period, comprising suchtechniques as life-cycle cost, benefit-to-cost ratio, savings-to-investment ratio, internal rate of return, and net savings.economic life, nthat period of time over which an invest-ment is considered to be the least-cost alternative formeeting a pa

33、rticular objective.element, nin construction planning, design, specification,estimating, and cost analysis, is a significant component partof the whole that performs a specific function, or functions,regardless of design, specification, or construction.DISCUSSIONWhile through analysis, or by direct

34、application, con-struction estimates categorized into elements (functional elements)with allocated costs, may be summarized in an elemental costsummary or elemental cost analysis; elements (functional elements)also provide a framework for consistent preliminary description,outline, and performance s

35、pecification, though all stages of planning,design, construction, and maintenance.elemental cost analysis, nin construction planning, design,specification, estimating, and cost analysis, is a tabulation ofE833082cost categorized by group element, element,orsub-element, or any combination thereof, to

36、 which a parameterquantity, or parameter quantities, has, or have, been appliedto derive benchmark figures (rates, ratios, percentages, andso forth).DISCUSSIONElemental cost analyses are valuable tools in planning,estimating, and controlling construction cost through all stages ofplanning and design

37、. The benchmark figures are primarily derived fromunderlying estimate detail but can, in some circumstances, be useddirectly to approximate estimates for other projects.elemental cost summary, nin construction planning, de-sign, specification, estimating, and cost analysis, is a tabu-lation of cost

38、categorized by group element, element,orsub-element.engineering economics, nthe application of economic tech-niques to the evaluation of design and engineering alterna-tives.equivalent uniform annual value, nSee annual value.ex situ treatment, ntreatment, remediation, or cleanup ofcontaminated mater

39、ial in a treatment facility at a differentlocation from the contaminated site.field requirements, nin construction design planning andestimating, the nonpermanent portion of construction costthat is essential to permit implementation of the constructionwork in the field.DISCUSSIONUsually relating to

40、 permits, insurances, supervision,site set-up, and other requirements that permit the construction process,but excluding such temporary construction work as formwork, bracing,shoring, and other work required to install the permanent constructionwork.financial management rate-of-return (FMRR), nSee a

41、d-justed internal rate-of-return (AIRR).first cost, ncosts incurred in placing a building or buildingsubsystem into service, including, but not limited to, costs ofplanning, design, engineering, site acquisition and prepara-tion, construction, purchase, installation, property taxes andinterest durin

42、g the construction period, and constructionrelated fees (syn. initial investment cost, initial cost).function, na purpose of the entire project or some portionthereof determined by the needs or desires of the user/ownerand expressed in two words, an active verb and a measurablenoun.function analysis

43、, nan examination of the project consistingof (1) the determination of the project functions; (2) theexamination and sorting of these functions into categories;(3) the selection of the critical functions and arrangementinto a logical order; and (4) the determination of the projectcost allocated to p

44、erforming each critical function.function, basic, na function that is necessary to achieve theprimary purpose of a building system or element.functional element, nin construction planning, design,specification, estimating, and cost analysis; see element.future value, nthe value of a benefit or a cos

45、t at some pointin the future, considering the time value of money (syn.future worth).future worth, nSee future value.general overhead, nthe fixed cost associated with operationof the corporate or main office, plant, equipment, and staffingmaintained by a contractor for general business operations.DI

46、SCUSSIONGeneral overhead costs may not be specifically appli-cable to a particular job or project.group element, nin construction planning, design, specifi-cation, estimating, and cost analysis, is a component part ofthe whole that includes relevant elements which, as a group,perform major specific

47、function, or functions, regardless ofdesign, specification, or construction.hazardous waste, nwaste that is listed as hazardous by theEnvironmental Protection Agency (EPA) or exhibits one ormore of the following characteristics: ignitability, reactivity,corrosivity, or toxicity, as specified in the

48、Code of FederalRegulations (CFR) part 261, or both.DISCUSSIONEPA did not intend to regulate many common materialssuch as paper, wood, vinegar, detergents, and other waste as hazardous.As a result, EPA has developed a list of products that are consideredhazardous waste and has developed criteria and

49、test methods todetermine if the waste has hazardous characteristics. These listings andtesting criteria can be found in the CFR 261.in situ treatment, ntreatment, remediation, or cleanup ofcontaminated sites and materials in place.incremental cost (benefit), nthe additional cost (benefit)resulting from an increase in the investment in a buildingproject (syn. marginal cost (benefit).inflation, na rise in the general price level, usually expressedas a percentage rate.initial cost, nSee first cost.initial