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Atul Khanzode, Martin Fischer, Dean Reed

Challenges and benefits of implementing virtual design and construction technologies for coordination of mechanical, electrical, and plumbing systems on a large healthcare project

Abstract: This case study presents the challenges that the project team faced and the benefits they realized in imple-menting virtual design and construction technologies to coordinate the Mechanical, Electrical and Plumbing (MEP) systems on a $95M healthcare project in Northern California, USA. These challenges include creating a work structure for the MEP coordination process, organizing the project team consisting of designers, engineers, contractors, and subcontractors, determining the handoff of information between the team members, creating guidelines for the most efficient use of virtual design and construction technologies, creating the process of conflict identification and resolu-tion between the MEP subcontractors, and aligning the contractual interests of the coordination team to meet the over-all project schedule. We also discuss the benefits that the project team achieved by using the virtual design and construction tools for the coordination of the MEP systems. These benefits include labor savings ranging from 20 to 30 % for all the subcontrac-tors, 100% pre-fabrication for the plumbing contractor, only one recorded injury throughout the installation of MEP systems over a 250,000 square feet project area, less than 0.2% rework for the whole project for the mechanical sub-contractor, zero conflicts in the field installation of the systems and only a handful of requests for information for the coordination of the MEP systems. The overall benefits to the owner include about 6 months’ savings on the schedule and about $9M in cost for the overall project.

Keywords: virtual design and construction, conflict identification, menoMMechan eal, Electricalpand Plu systemsmbing

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Full text: content.pdf (1,574,195 bytes) (available to registered users only)

Series: w78:2007 (browse)
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Danner W F, Yang Y, Reed K A

STEP integration and interpretation methods

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Full text: content.pdf (2,309,710 bytes) (available to registered users only)

Series: w78:1992 (browse)
Cluster: papers of the same cluster (result of machine made clusters)
Class: class.represent (0.018760)
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Permission to reproduce these papers has been graciously provided by Research Press of the National Research Council of Canada. The support of the editor, Dr. Dana Vanier, is gratefully appreciated.


Reed K A

Product modeling of buildings for data exchange standards: from IGES to PDES/STEP and beyond

Abstract: Digital data exchange problems are severe in the building community because of its organizational and operational complexity and the vast scope of its information needs. Early CAD data exchange standards, such as the Initial Graphics Exchange Specification (IGES), dealt exhaustively with the syntax or arrangement of the data to be exchanged. Most of the semantics or meaning of the data must be imposed by the user of the standard. Current work to develop the first international standard, called both the Standard for the Exchange of Product Model Data (STEP---the IS0 nomenclature) and the Product Data Exchange Specification (PDES---the USA nomenclature), is based on an explicit definition of semantics at the user level. The response of the building community to these two different approaches to standardization is reviewed in terms of product modeling of buildings. A number of challenges are discussed in the context of building data.

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Full text: content.pdf (2,032,162 bytes) (available to registered users only)

Series: w78:1988 (browse)
Cluster: papers of the same cluster (result of machine made clusters)
Class: class.software-software (0.035849) class.represent (0.032623) class.social (0.031965)
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Permission to reproduce these documents has been graciously provided by the Lund University and the Swedish Building Centre. The assistance of the editors, Prof. Per Christiansson and Prof. Henry Karlsson, is gratefully appreciated.


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