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TitleBIM Thesis
TagsBuilding Information Modeling Architect Construction Management Autodesk
File Size983.6 KB
Total Pages59
Document Text Contents
Page 29

Figure 2-6. Analysis of productive and non productive time during a typical construction project
(Adrian 2004)

complete freedom to design any type of building they wish, contingent upon approval by the

owner. Next, the drawings are turned over to the owner for competitive bidding by various

contractors. Since the relationship between the contractor and architect starts after the drawings

are complete, there is little input that the contractor can offer to improve productivity during the

construction process.

During the design phase of a project, the architect will prepare several levels of estimates

on the size, quality, and cost of the building. This is based on their conception of the cost for

building the project. Most architects base their costs on historical construction square foot costs

of similar projects and neglect market trends and cost of materials. Small cost increases can

have dramatic impacts of the final cost of a building. There is no doubt that if the estimates are

grossly incorrect, both the quality of the project and the time it takes to complete it suffer

(Adrian 2004).


Page 30

Using a Construction Management (CM) firm early in the design process will result in

more accurate preconstruction estimates that will keep the owner more informed for bankroll and

cost purposes. Fully integrated BIM design process links the CM to the architect at the

beginning of the design phase. Each of them will have input to the design of the building, and

the end result will be a more cost effective building due to the increased productivity from this

type of relationship. They enable the exploration and improvement of the project executing

strategy, facilitate improvements in constructability with corresponding gains in on-site

productivity, and make possible the rapid identification and resolution of time-space conflicts

(Fisher and Kunz 2004). Although this system offers a more complex design process, it allows

all participants to input the best possible scenario for a construction project (Figure 2-7).















Figure 2-7. Reciprocal relationships between various parties involved in the design process and
the BIM project


Page 58

Keller, Chris. (2004). “Interoperability at Dow Jones & Company.”
bility.pdf&vid=13676&CFID=627806&CFTOKEN=45406879> (Feb. 8, 2008).

Khemlani, Lachmi. (2006). “The AGC's BIM Initiatives and the Contractor's Guide to BIM.”

<> (Jan. 22, 2008).

Mosca, Peter L. (2007). “Building Information Modeling Adoption Accelerating, CMAA/FMI

Owners Survey Finds.” <>
(Jan. 13, 2008).

National Institute of Standards and Technology (NIST). (2007). “General Buildings Information

Handover Guide: Principles, Methodology and Case Studies.”
<> (Feb. 3, 2008).

Office of the Chief Architect. (2006). GSA Building Information Modeling Guide, 1st Series,

Washington, D.C.

U.S. General Services Administration. (2006). “3D-4D Building Information Modeling.” U.S.

General Services Administration. <> (Aug. 28, 2007)


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