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Title:

A Bid Item Level Performance Time Database Management System as Part of a Framework for Progressively Estimating Contract Time

Accession Number:

01045593

Record Type:

Component

Availability:

Transportation Research Board Business Office

500 Fifth Street, NW
Washington, DC 20001 United States

Abstract:

The estimation of contract performance time is an integral step in highway construction project planning. State highway agencies must strive to set accurate and reasonable contract performance times in order to encourage qualified bidders, produce quality projects, and minimize impacts to the traveling public. The Federal Highway Administration (FHWA) recognizes this and has mandated that all state highway agencies have an approved, written contract time estimating procedure. The FHWA also published a number of recommendations to assist individual state highway agencies in meeting this mandate. Among these recommendations is the development of a database of historical production rates. This work was performed to assist the Virginia Department of Transportation (VDOT) in adhering to this mandate and developing an organization-specific performance database. A multi-level framework for contract time estimation was proposed that parallels the cost estimating and the design progression processes. The framework relies on the increasing number of design details as a project proceeds from the scoping phase to the advertisement phase. Three framework levels are proposed: conceptual, parametric, and pre-advertisement. Another major element of this work was the development of the bid item level performance time database management system known as the Bid Item Duration Data System (BIDDS). BIDDS uses contract-specific conditional attributes to query for and report historical bid item performance data in a tabular or graphical format. These formats display relationships between performance time and time of year performed, and total installed quantity. Performance time histograms are also available to display the frequency of performance time occurrence.

Monograph Accession #:

01042056

Report/Paper Numbers:

07-1522

Language:

English

Corporate Authors:

Transportation Research Board

500 Fifth Street, NW
Washington, DC 20001 United States

Authors:

Williams, Robert Charles
Hildreth, John
Vorster, Michael C

Pagination:

15p

Publication Date:

2007

Conference:

Transportation Research Board 86th Annual Meeting

Location: Washington DC, United States
Date: 2007-1-21 to 2007-1-25
Sponsors: Transportation Research Board

Media Type:

CD-ROM

Features:

Figures (9) ; References (8)

Geographic Terms:

Virginia

Subject Areas:

Administration and Management; Construction; Highways; Planning and Forecasting; I52: Construction of Pavements and Surfacings; I72: Traffic and Transport Planning

Source Data:

Transportation Research Board Annual Meeting 2007 Paper #07-1522

Files:

TRIS, TRB

Created Date:

Feb 8 2007 6:08PM