ASTM E1804-2007 Standard Practice for Performing and Reporting Cost Analysis During the Design Phase of a Project《项目设计阶段的执行和报告成本分析用标准实施规程》.pdf
《ASTM E1804-2007 Standard Practice for Performing and Reporting Cost Analysis During the Design Phase of a Project《项目设计阶段的执行和报告成本分析用标准实施规程》.pdf》由会员分享,可在线阅读,更多相关《ASTM E1804-2007 Standard Practice for Performing and Reporting Cost Analysis During the Design Phase of a Project《项目设计阶段的执行和报告成本分析用标准实施规程》.pdf(4页珍藏版)》请在麦多课文档分享上搜索。
1、Designation: E 1804 07Standard Practice forPerforming and Reporting Cost Analysis During the DesignPhase of a Project1This standard is issued under the fixed designation E 1804; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the y
2、ear of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.1. Scope1.1 This practice covers an arranged method for providingcost analysis during the design phase of buildings.1.2 Th
3、e use of this practice increases the level of commu-nication between the design professional, owner, and the costprofessional providing the cost consulting services.1.3 The practice establishes a structured method to supportdesign decisions.1.4 The practice provides design and cost professionals wit
4、ha framework for historically tabulating information to be usedon relevant future projects.2. Referenced Documents2.1 ASTM Standards:2E 631 Terminology of Building ConstructionsE 833 Terminology of Building EconomicsE 1369 Guide for Selecting Techniques for Treating Uncer-tainty and Risk in the Econ
5、omic Evaluation of Buildingsand Building SystemsE 1557 Classification for Building Elements and RelatedSiteworkUNIFORMAT II3. Terminology3.1 DefinitionsFor definitions of terms used in this prac-tice, refer to Terminologies E 631 and E 833.4. Summary of Practice4.1 This practice provides an organize
6、d approach for costanalysis during the design phase of a building project. Thepractice presents the necessary information for the designprofessional and owners to make decisions.4.2 This practice establishes a recommended procedure forformatting the final project information for its use in forecast-
7、ing the cost of future projects.5. Significance and Use5.1 This practice increases the level of communication,provides an organized approach to cost control during thedesign of a project, and also provides a means of identifyingextraordinary cost items and changes in assumptions betweenestimates.5.2
8、 The users of this practice include owners, developers,contractors, cost professionals, estimators, architects, engi-neers, specification writers, quantity surveyors, and anyonecharged with the responsibility of successfully managing thedesign of a building within a specified budget.5.3 Use this rep
9、orting format during the following:5.3.1 Contracting for design cost analysis services,5.3.2 Comparing the current design costs to a previousestimate, and5.3.3 Responding to each design phase.5.4 This practice provides a tool for analyzing designoptions and examining strategies to maintain the build
10、ingbudget.6. Types of Estimates and Level of Detail6.1 Purpose of Estimate:6.1.1 The cost analysis procedure consists of providinginformation in text and estimate form at the completion of eachsignificant phase of the design process: program, schematic,design development, and construction documents.
11、 Apply thisformat for each component when the construction project iscomprised of several definable building types.6.1.2 Comparisons of Uniformat II estimates to a contrac-tors proposal will require the estimate to be resummarized toMasterFormat.36.2 Program Phase Estimate:6.2.1 The program/predesig
12、n estimate includes constructioncosts, construction impact fees, and construction related ex-penditures. It is prepared from the early stage of the designprocess to assemble project data in a systematic format fromestablished project criteria. The resulting report provides thebaseline criteria and c
13、osts for the design team.6.2.2 The program predesign estimate is prepared in anelemental form using Uniformat II (Classification E 1557).1This practice is under the jurisdiction of ASTM Committee E06 on Perfor-mance of Buildings and is the direct responsibility of Subcommittee E06.81 onBuilding Econ
14、omics.Current edition approved April 1, 2007. Published April 2007. Originallyapproved in 1996. Last previous edition approved in 2002 as E 1804 02.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandar
15、ds volume information, refer to the standards Document Summary page onthe ASTM website.3Available from Construction Specifications Institute, 99 Canal Center Plaza,Suite 300, Alexandria VA 22314.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, Unit
16、ed States.Elemental analysis allows the estimate to be prepared usingbasic elements, costs per square foot (meter) of gross floorarea, ratios, and, where necessary, lump sum allowances.Calculate the design allowance using risk evaluation tech-niques as described in 7.7 of Guide E 1369.6.3 Schematic
17、Design Phase Estimate:6.3.1 The schematic design estimate provides for the firstcost analysis based on project specific design criteria. Preparethe estimate in Uniformat II, Level 3 (Classification E 1557)based on preliminary floor plans, preliminary specificationoutlines, general finish schedule in
18、formation, and typicalstructural, mechanical, and electrical information. Use buildingparameters in establishing the project base line costs. Whenspecific criteria are not yet established, use target costs(allowances). Target costs provide design team guidance dur-ing the continuation of the design.
19、 Calculate the designallowance using risk evaluation techniques in 7.7 of GuideE 1369.6.3.2 Compare the schematic design estimate to the pro-gram estimate. The comparison provides information to thedesign professional on the changes since the last estimate.6.4 Design Development Phase Estimate:6.4.1
20、 Preparation of the design development estimate in-cludes the quantifying of key building elements. Quantities ofmaterials are calculated and multiplied by material and laborunit prices to develop the total cost for each element. Use thismethod to arrive at a total cost for each element. Quantify an
21、dprice key building systems to replace the building parametersused in the previous estimate. Calculate the design allowanceusing risk evaluation techniques in 7.7 of Guide E 1369.6.4.2 Summarize the design development estimate in Mas-terFormat. Restructure the design development estimate inUniformat
22、 II (Classification E 1557) when comparing with theschematic design estimate. The reformatted design develop-ment estimate will provide the basics for the translationbetween the schematic and design development estimates.6.5 Construction Document Phase Estimate:6.5.1 The construction documents estim
23、ate is the finalestimate of a projects construction costs based on detailedproject information. Prepare quantity information in Master-Format. Subdivide pricing into material, labor, and equipmentcosts.6.5.2 Use MasterFormat to compare the final constructiondocuments estimate to the design developme
24、nt estimate.Calculate the design allowance using risk evaluation tech-niques in 7.7 of Guide E 1369.6.5.3 Reformat the construction documents estimate toUniformat II, Level 2 (Classification E 1557) to providehistorical data for future building costs.6.6 Reconciliation of Estimate with General Contr
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