Productivity gains through CIS/2 electronic data exchange format for steel structures

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Productivity gains through CIS/2 electronic data exchange format for steel structures

http://irc.nrc-cnrc.gc.ca P r o d u c t i v i t y g a i n s t h r o u g h C I S / 2 e l e c t r o n i c d a t a e x c h a n g e f o r m a t f o r s t e e l s t r u c t u r e s _{I R C - O R A L - 8 5 8} P a r d a s a n i , A F e b . 1 3 , 2 0 0 8

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Workshop on Computational Tools and Technologies for Construction Practitioners (London, Ontario, February 13, 2008)

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Acknowledgments

•

J

itender

Singh, Hastings and Aziz

Ltd.

•

T

Outline

• Construction Process Inefficiencies • Electronic (Design) Data Exchange • CIS/2

• Case Studies

• Barriers to its adoption

Construction Process

Inefficiencies

• Inefficiencies result from continued reliance on paper-based information management systems

– Manual reentry of data,

– Duplication of business functions

Project Conception

Project Delivery

Design Fabrication Operation/

Maintenance

Analysis Design Detailing

Cost of Inefficient

Interoperability in

Construction

Three type of costs arising out of Inefficient Interoperability:

Type of Costs Due to

Avoidance Redundant systems

Mitigation Manual re-entry of data

Delay Idled employees

Total Costs 15.8 Billion

• Cost Analysis of Inadequate Interoperability in the U.S.

Capital Facilities Industry (NIST GCR 04-867, 2004)

– Increased new construction costs by $6.18 per sq. ft.

– Increased O&M costs by $0.25 per sq. ft.

• Causes of Inadequate Interoperability:

– Fragmented nature of industry – Lack of standardization in IT – Inconsistent technology

Interoperability

• Interoperability – “the ability of two or more systems or components to exchange information and to use the information that has been

exchanged” IEEE Standard Computer Dictionary • Interoperability is defined as the ability to:

– Manage,

– Communicate (Data Exchange and Access)

electronic product and project data between collaborating firms and within individual companies design, construction, maintenance, and business process systems.

• Information need only be entered into the system only once:

– It is then available to all stakeholders instantaneously through on an as needed basis

Interoperability

Solutions

• Three ways to achieve :

– Point to point data translators – Mandating the use of

proprietary tools across an industry

– establishing neutral data standards (e.g. CIS/2)

• Technologies – XML – DXF – STEP – SNIF – CIS/2 – IFC

– AEX (Automated Exchange of Equipment Data)

EDI using XML: Hammond

Manufacturing

CIS/2

• CIMSteel Integration Standards Version 2

• CIS/2 is intended to create a seamless and integrated flow of information among all parties of the steel supply chain.

• It is not a S/W (software) package that you buy.

• Just like DXF, it is a file format for Electronic Data Interchange. • The CIS/2 file is imported/exported in a steel related CAD S/W. • Some S/W vendors charge for their CIS/2 import/export feature. • Provides for DBMS

CIS/2 Benefits

• The CIS/2 translators eliminate the need to re-input data into SDS/2 from paper drawings.

• EDI helped reduce detailing errors by providing an accurate transfer of member sizes and locations.

• The hours normally required for detailing and checking for errors are greatly reduced.

• Cost savings throughout the project since erection could begin sooner and occupancy could occur earlier.

• Savings in estimating the material cost (e.g. importing the model into Fabtrol)

Case Study

• The Baptist West Hospital in Knoxville, TN:

– RAM Structural System interfaced with SDS/2 detailing

software using CIS/2 technology to streamline design, detailing, fabrication and erection on a fast-track hospital project.

– Steel detailer imported CIS/2 files in SDS/2 thus quickly got to work on shop drawings

Barriers to Electronic

Data Interchange

Barriers

• Current Business Model do not support EDI

• Only paper as a valid mechanism of information exchange. Solutions:

• There needs to be a new business model that will allow for data in electronic format to be the deliverable

IFC (Industry

Foundation Classes)

• Developed by IAI (International Alliance for Interoperability)

• Serves the need for most architectural, general contracting and some facilities management task

• Lacks sufficiently complete representation of structural eng to be effectively used by structural engineers.

• Relationship between IFC and CIS/2

– IFC integrate the different design disciplines horizontally

– While the CIS/2 format integrate the design, analysis, detailing, and fabrication processes vertically.

Data Exchange with

CIS/2

Detailing

Fabrication

NIST VRML and IFC Translator

Spencer Steel Spencer Steel

Fabtrol SDS/2

Analysis

Hastings and Aziz RAM Structural

CIS/2 CIS/2

CIS/2 CIS/2

Verification

NIST CIS/2-VRML

Translator

• The NIST CIS/2 VRML translator imports CIS/2 files

– Exports VRML that can be viewed: • In a VRML Browser

• In a web browser with VRML plug-in – Exports IFC files that can be:

• Imported into many IFC viewers and CAD programs.

• Converted to a DWG file with the DDS-CAD Viewer and imported into AutoCAD.

Application of CIS/2:

Tools for As-Built

• Mobile Tools for Inspection of Steel Structures Project at IRC

– To assist in the visual inspection of steel structures – To create As-Built construction documentation

GPS coordinate system to local coordinate system converter Indoor GPS Longitude Latitude Altitude CIS/2 File NIST CIS/2 to VRML Translator VRML Model Location Aware 3D Model Navigator

References

• CIMsteel Integration Standards, www.cis2.org

• CIS/2 and IFC - Product Data Standards for Structural Steel

(http://cic.nist.gov/vrml/cis2.html#IFC)

• Cost Analysis of Inadequate Interoperability in the U.S. Capital Facilities Industry.

Michael P. et. al. NIST GCR 04-867

• The CIS/2 Format: Another AEC Interoperability Standard,

http://www.aecbytes.com/buildingthefuture/2005/CIS2format.html

• Interoperability and the construction process, A white paper for building owners and

project decision makers, Coleman, G.S. AISC

• American Institute for Steel Construction, http://www.aisc.org

• Utilizing Interoperability & eCommerce,

http://www.aisc.org/template.cfm?template=/ContentManagement/ContentDisplay.cfm& ContentID=31814

• Building Better, Modern Steel Construction, June 003