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A Critical Review of Building Information Modelling
 

A Critical Review of Building Information Modelling

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    A Critical Review of Building Information Modelling A Critical Review of Building Information Modelling Presentation Transcript

    • A CRITICAL REVIEW OF BUILDING INFORMATION MODELLING By Siddhartha Kamat
    • Contents
      • Introduction
      • Objectives of the project
      • Literature Review
      • Industry Research and Market analysis
      • Methodology
      • Discussion
      • Conclusion
      • References
    • Introduction
      • Indian Market
      • According to survey, INDIA is on the verge of becoming the 3rd largest construction market in the world by 2020 after USA and CHINA.
      • Foreign investments and economic growth policies are fuelling this trend
      • Application of software has taken a driver’s seat in every construction project
      • Engineers are being outsourced, especially in analysis, design and detailing
    • Objectives
      • 1. To carry out a research on BIM technology and its advantages.
      • 2. To study the software tools available in the market which support BIM technology
      • 3. To study the workflow of the processes from design to execution in BIM
      • 4. To demonstrate the integration of all the software tools required to implement BIM through a small scale real-life example.
    • Objectives Contd.
      • 5. To model, analyse, design and estimate bill of materials for an example building using BIM technology.
      • 6. To automate the exchange of data between model, structural analysis, design and detailing using spread sheets, structural analysis software and BIM software.
      • 7. To study other utilities of BIM
    • Literature Review
      • What is Building Information Modeling?
      • “ Building Information Modelling or BIM is a digital representation of the building process to facilitate exchange and interoperability of information in digital format.”
    • Literature Review Contd.
      • Basic Terminologies
      • Building Information model
      • Parametric
      • Integration
      • Interoperability
      • Modular Design
    • Literature Review Contd.
      • Advantages of BIM
      • Pre-construction benefits
      • Design benefits
      • Construction and fabrication benefits
    • Literature Review Contd.
      • Benefits to various stake holders
      • Benefits to Architects
      • Benefits to Structural Engineers
      • Benefits to Contractors
      • Benefits to Estimators
    • Literature Review Contd.
      • IFC file format
      • An intelligent file format
      • Development
        • The IFC format was originally developed by the International Alliance for Interoperability established in 1995 by American and European AEC (Architecture Engineering and Construction) firms
      • Why IFC?
        • preserve the full geometric description in 3D
        • it also knows its location and relationships, as well as all the properties (or parameters) of each object
    • Market Analysis
      • List of software supporting BIM
      • Architecture
      • Sustainability
      • Structures
      • MEP
      • Construction
      • Facility Management
    • Case study- PCL (Canada & USA) [8]
      • BIM advantages as estimated by the Company:
      • PCL is realizing roughly a 500 percent return on investment with BIM.
      • The vast majority of that payback is coming from clash-detection efforts that greatly reduce costly change orders.
      • The company have realized big return on low effort in the 4-D sector i.e: scheduling of the project using BIM.
      • BIM has helped the company avoid costly errors on a number of their projects.
    • Case study contd.
      • While estimating quantity take-off, BIM check showed a difference of 70,000 cu. yards from the original take off of 100,000 cu.yards, thus saving them $3 million.
      • The combined effort required 560 man-hours, generating expenses well short of its total cost savings.
      • By layering the architectural, structural and MEP systems in BIM, the team discovered nearly 3,500 total clashes. Though only 500 of these clashes would have cost the company a lot of time in getting them clarified.
    • Industry Research
      • Industry Research
      • Interaction with A. N Prakash, Project Management Consultant.
      • “ The Reinforcement in junctions is not modeled properly hence it is difficult to execute on site”
      • “ Service shaft drawings are 2D hence it is difficult to visualize”
    • Industry Research Contd.
      • Interaction with Site Engineers
      • “ Clashes in the building services with the structural members is the common problem on site”
    • Conventional Process Phases of typical Construction
    • Conventional Process Contd. Typical workflow in civil engineering projects in current practice
    • Problems with current practice
      • Flow of Data
      • Improper schedule of work
      • Cost Estimate is tedious and not accurate
      • Digitalization of data is less
      • Mock up of part of the building
      • Reinforcement details in junctions
      • Energy analysis
    • Methodology Workflow
    • Discussion
      • Model Description
      • General Details:
      • Title: Proposed Apartment for Shri. Ramesh Bonageri, Hubli
      • Design Consultants: Soham Architects and Interior Designers
      • Building Type: Residential-Ground (Parking)+3
      • No. of Flats: 5 Flats x 3 Floors= 15 Flats.
      • Type of Flat: 2BHK
      • Floor to Floor Height: 10’
      • Slab Thickness: 5”
      • Elevator: Yes
      • Staircase: Single Flight
    • Phases of Model
        • 2D Plans of each floor (Hard Copy)
        • 3D geometry of Building (ArchiCAD Phase)
        • Structural Elements (ArchiCAD/Tekla Phase)
        • Load and analysis Model (STAAD.Pro Phase/ Tekla Phase)
        • Structural Design Model (Excel Phase)
        • Reinforcement Details (Tekla Phase)
    • Phases of Model Contd.
        • 3D geometry of Building (ArchiCAD Phase)
    • Discrepancies in 2D Plan Clash of window and adjacent column: Exterior View
    • Discrepancies Contd. Beam in Service Shaft
    • Discrepancies Contd. Misplaced Beam
    • Drawings and Views North Elevation of the building North West Elevation of the Building
    • Rendered Model
    • Material Take-Off and Lists
      • Creating Zones
    • List of 3 rd floor Zones
    • List of 3 rd floor Zones
    • Material Take-Off and Lists Slabs by Stories
    • Material Take-Off and Lists Slabs by Stories
    • Phases of Model Contd.
        • Structural Elements (ArchiCAD/Tekla Phase)
    • Phases of Model Contd. Rigid links
    • Phases of Model Contd.
        • Load and analysis Model (STAAD.Pro Phase/ Tekla Phase)
    • Phases of Model Contd.
        • Structural Design Model (Excel Phase)
    • Phases of Model Contd.
        • Reinforcement Details (Tekla Phase)
    • DEMO
    • Drawbacks
      • Complexity of BIM software
      • Cost of Software
      • Information flow
    • Conclusion
      • BIM is promising and more advantageous compared to the orthodox process, but still it has several setbacks as the technology is still in primitive stage.
      • A significant amount of development is to be done in information flow and interoperability of the software.
      • Additional training material is to be provided with software to learn the complicated features.
      • As the technology will advance, some of the setbacks may be overcome. For example IFC converter which is a macro in Tekla 16, is transformed as integral part in Tekla 17.
    • References
      • Constructing the future China & India- solidiance brochure, http://www.solidiance.com/Admin/pdf/Constructing_the_future_China_&_India.pdf
      • William D. and McCarthy J. E. Product Life Cycle: “Essentials of Marketing”, Richard, D Irwin Company, 1997 http://www.urenio.org/tools/en/Product_Life_Cycle_Management.pdf
      • An introduction to Building Information Modelling( BIM)- A Guide for ASHRAE Members, http://todaysfacilitymanager.com/facilityblog/wp-content/uploads/bim_guide.pdf
      • Wikipedia, The Free Encyclopedia, 15 Mar 2009,http://en.wikipedia.org/wiki/Industry_Foundation_Classes.
      • ArchiCAD - Tekla Structures, Model-Based Interoperability, by Graphicsoft, http://download.graphisoft.com/ftp/marketing/interoperability/tekla/ac-tekla-guide.pdf
      • http://en.wikipedia.org/wiki/Microsoft_Excel
      • http://en.wikipedia.org/wiki/Microsoft_Project
      • Mc Graw Hill Constructions: Smart market report december_2008
    • Thank you