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System Dynamic Modeling of Delay and Disruption Claims - The system dynamic (SD) method is presented in this article as a tool that can show the logic link between cause and effect; that is, disruption-delay-acceleration and productivity loss. This article describes how to establish and use the SD model for acceleration, delay, and disruption purposes with a simple example. The importance and sensitivity of the coefficients in the SD model are also discussed.
Constructive Acceleration: Waking the Sleeping Giant - "Death by 1,000 cuts!" It's the total cost claim battle cry, long uttered by contractors in their attempts to assign total project loss to the owner. And why not? After all, the total cost method was quick, simple and inexpensive to apply -- Until Amelco effectively crushed it for California public works contractors in 2002. This judicial counter-attack has effectively limited contractor recovery to the four corners of the contract. This article is reprinted from the 2004 AACE International Transactions.
D-PIPE: A Worker Hour Rates Data Warehouse for Estimating Industrial Pipe Work Construction - This article describes a newly developed data warehouse (called D-PIPE), designed to support efficient estimating of worker-hour rates for pipe work related to industrial construction and its rehabilitation. It includes operational information about pipe configurations, job types, pipe sizes and types, and related worker-hour rates for shop-fabrication and field-erection. A case study is presented to demonstrate the use and capabilities of D-PIPE.
Automation of Pre-Bidding Process for Construction Projects - This article presents the proposed automation of the pre-bidding process in order to increase bid-process efficiency and to minimize possible human errors and the risks associated with this process. This article presents two distinct sections: The conceptual model, and the implementation of the proposed underlying concept. This automated methodology has been developed in collaboration with Chancellor Industrial Construction Ltd. of Edmonton, Canada (which will be referred to as "Industrial Partner" hereafter).