Document

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

OUTLINE

• Introduction• Construction Project Details• Methodology• Results• Conclusion

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

Query – 1: Specific day progress

Sub objective -2: Develop 4D as-built model

Bentley

Autodesk

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

Thank You

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]