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Supporting Estimates with Effective Scope of Work Definition

机译：支持有效的工作定义范围的估计

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摘要

Most estimators realize that one of the essential ingredients for preparation of an accurate cost estimate is the comprehensive and sufficient definition, and subsequent control of project scope. Numerous studies have identified project scope definition as one of the most critical factors that influence project success. In 1982, the Construction Industry Institute (CII) Business Roundtable issued a report stating that “poor scope definition at the (budget) estimate stage and loss of control of project scope rank as the most frequent contributing factors to cost overruns." [1] Nevertheless, obtaining adequate scope definition to support cost estimating continues to be one of the most persistent problems faced by estimators. This article discusses issues involved in dealing with scope development problems during the preparation of capital facility cost estimates. Topics to be covered include: 1. Introducing a stage-gate project development process 2. Identifying the minimum requirements to prepare various classes of estimates 3. Communicating information requirements to project teams and estimate providers 4. Corelating estimating techniques to the level of scope information 5. Using a frozen for estimating design basis and incorporating late changes 6. Presenting the estimate in relation to the level of scope definition This article expands upon an earlier AACE International article, Scope Development Problems in Estimating [2], incorporating information from AACE International (AACE) recommended practices on estimate classification, as well as from other sources. This article was first presented as EST.3424 at the 2020 AACE International Conference & Expo.
机译：大多数估计人都意识到制备准确成本估计的基本成分之一是全面且充分的定义以及随后的项目范围控制。许多研究已经确定了项目范围定义，作为影响项目成功的最关键因素之一。 1982年，建筑业学院（CII）商业圆桌会议发布了一份报告，指出“（预算”差别定义（预算）估计阶段和项目范围控制的损失，作为成本超支的最常用因素等级。[1]尽管如此，获得足够的范围定义来支持成本估算仍然是估算者面临的最持久的问题之一。本文讨论了在制定资本设施成本估算期间处理范围开发问题所涉及的问题。有涵盖的主题包括：1 。介绍舞台门项目开发过程2.确定准备各类估计的最低要求3.将信息要求传送给项目团队和估算提供者4.用冷冻估计，将信息要求传送到项目团队和估算提供者。设计基础并纳入后期更改6.呈现与水平o相关的估计F范围定义本文在早期的AACE国际文章中扩展，估计的范围开发问题[2]，从AACE International（AACE）的信息纳入估计分类的建议实践，以及其他来源。本文首先在2020年AACE国际会议和世博会上呈现为EST.3424。

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  • 来源
    《Cost engineering》 |2021年第4期|15-23|共9页
  • 作者

    LARRY R. DYSERT; TODD W. PICKETT;

  • 作者单位

    Conquest Consulting Group;

    Conquest Consulting Group;

  • 收录信息 美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
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