Extending BIM to Capture Construction Process Documentation
James D.Goedert Ph.D., P.EDepartment Head of Construction Systems
University of Nebraska-Lincoln
Pavan Meadati Ph.D.Assistant ProfessorSouthern Polytechnic State University
The Building Information Modeling (BIM) tends to stop at the preconstruction phase leaving large amounts of relevant data out of the final model needed by facilities management for possible recommissioning or decommissioning efforts.
Problem Statement
PRE During POST
Construction
2D
As Builts
Site Photos
Actual Schedule
Actual Cost
Cost Estimates
Preconstruction Schedule
4D5D
Space conflict problems
Constructability problems
Hazard Analysis
Resource Allocation
Design Phase
3D
Reduced RFIs
Design Phase
3D
Submittal
RFI
Change orders
Specifications
Shop Drawings
Introduction – BIM Current Status
Research Objective
To extend the Building Information Modeling (BIM) beyond preconstruction phase by integrating construction process documents and create a single repository of facility data to the owner.
2D
As Builts
Desired BIM Status in Construction Phase
During POST
Construction
Cost Estimates
Preconstruction Schedule
4D5D
Space conflict problems
Constructability problems
Hazard Analysis
Resource Allocation
Design Phase
3D
Reduced RFIs
Design Phase
3D
Submittal
RFI
Change orders
Specifications
Shop Drawings
3D
As Builts
Site Photos
Actual Schedule
Actual Cost
PRE
Sub-Objectives & Goals
Sub-Objective -1: Capture 3D as-built data into the BIM model
Identify the technology, approach and customize the tools or techniques to capture the as-built components x, y and z coordinates and develop the 3D as-built model in three different vendor’s BIM software products.
Contd.
Sub-Objectives & Goals
Sub-Objective – 2: Develop 4D as-built model
Develop a 4D as-built model for depicting the actual progress of the project in three different vendor’s BIM software products
Contd.
Sub-Objectives & Goals
Sub-Objective -3: Use BIM to capture and store construction documents
Develop means to integrate RFI, specifications, submittals, and shop drawings, to each component of the 3D as-built model in three different vendor’s BIM software products
Construction Project Details
Name: Offut child care extension project
Area of Addition: 4200 SF at the south end of the existing structure
Data Obtained:2D drawingsSpecificationsRough P3 schedule
Project Duration:Start Date – 4/24/2006 Completion Date – 8/10/2006
Acquisition of three dimensional data & development of 3D as-built guide line layout in AutoCAD
Methodology
Part - A
Development of the following using Autodesk, Bentley, and Graphisoft BIM Software products
• Three dimensional as-built model• Four dimensional as-built model• Integration of construction documents
Part - B
Tool – 1: Custom Built Robotic Laser Rangefinder System
Directed perception 230 tele-operated pan and tilt unit
Tripod
Leica Disto plus laser distance meter
Sub objective -1: Capture 3D as-built data into the BIM model
Tools to collect 3D as-built co-ordinates
Orientation
Sub objective -1: Capture 3D as-built data into the BIM model
Model: Leica TPS 1200
Tool – 2: Total station
Tools to collect 3D as-built co-ordinates
Guide Line Layout for 3D As-builts in AutoCAD
Sub objective -1: Capture 3D as-built data into the BIM model
3D As-built Model in Revit
Sub objective -1: Capture 3D as-built data into the BIM model
As-built 3D model excluding MEP
Plumbing 3D as-builts
As-built 3D model excluding MEP
3D As-built Model in Bentley
Sub objective -1: Capture 3D as-built data into the BIM model
Plumbing 3D as-builts
3D As-built Model in Graphisoft
Sub objective -1: Capture 3D as-built data into the BIM model
Plumbing 3D as-builts
As-built 3D model excluding MEP
Develop 4D as-built model
• Develop as-built schedule • Link 3D as-built model and as-built schedule • Develop means to run queries• Develop means to integrate daily jobsite photographs with the
model
Steps
Sub objective -2: Develop 4D as-built model
Contractor’s Daily Progress sheet
Sub objective -2: Develop 4D as-built model
Develop an as-built schedule
As-built schedule – Microsoft Project
Sub objective -2: Develop 4D as-built model
Query -2 Progress during specific period
Bentley
Autodesk
Site Photographs Integration
Site Pictures Storage
Interface development
Sub objective -2: Develop 4D as-built model
Autodesk
Integration
Steps
Graphisoft
• Existing Parameters do not facilitate post construction data linkage
Sub objective -3: Use BIM to capture and store construction documents
Steps
Construction Documents -Integration
Specifications, shop drawings, change orders, request for information (RFI), submittals
Documents
• Creation of new parameters
• Link the elements and documents
Integration – Autodesk Products
Sub objective -3: Use BIM to capture and store construction documents
Sub objective -3: Use BIM to capture and store construction documents
Integration – Bentley Products
Integration – Graphisoft Products
Sub objective -3: Use BIM to capture and store construction documents
Results Summary
Vendor Autodesk Bentley Graphisoft
Sub-objective-1Capture 3D as-built data into the BIM model
Completely achieved
Completely achieved
Completely achieved
Sub-objective-2Develop 4D as-built model
Partially achieved
Completely achieved
Completely achieved
Sub-objective-3Use BIM to capture and store construction documents
Completely achieved
Completely achieved
Completely achieved
Time required to accomplish the sub-objectives in each vendor’s products varied
• Availability of the components in the library
• Amount of programming
• Programming language
BIM has the potential to substantially change the way construction is performed and documented. BIM could eventually become the sole source of information including facilities management and planning by further research investigations and software developments.
The methodology discussed in this research serves as an initial step to extend BIM beyond the preconstruction phase of the project life cycle
Conclusion
James D.Goedert Ph.D., P.EDepartment Head of Construction Systems
University of Nebraska-Lincoln (Omaha campus)PKI 102D, 1110 So. 67th St.Omaha, NE, 68182Phone: 402-554-3281E-mail: [email protected]
.
Pavan Meadati Ph.D.Assistant Professor, Construction Management Department
Southern Polytechnic State UniversityH 342-A, 1100 South Marietta ParkwayMarietta, GA, 30060Phone: 675-915-3715E-mail: [email protected]