bim ppt 2 final

BIM Building Information Modeling Part-2

By: Adil Ahmad Khan 09-CES-02

Topics Covered In Mid-Semester

• Introduction to BIM• BIM Definition and its Evolution• Why we Need BIM• Importance of BIM and Comparison• BIM Software's and its overview• BIM Reduce Overall Cost• BIM Conclusion

End Semester Topics

• BIM process?• Problems related to BIM enabling• BIM in India• BIM case study (MASDAR CITY)

BIM PROCESS

PLAN

• Existing Conditions Modeling• Programming• Site Selection• Preliminary Cost Estimation• Phase Planning

DESIGN COMMUNICATION SYSTEM ANALYSIS ESTIMATION SCHEDULING

DESIGN• Design Authoring• Design Reviews (Constructability, 3D Design

Coordination, Virtual Mock ups)‐• Site Analysis• Engineering Analysis ( Structural, Energy, Lightning,

Evaluation, Thermal Performance)• Code Validation• LEED Evaluation• Cost Estimation• Phase Planning


CONSTRUCT

• 3-D MEP Coordination• Digital Fabrication• 3D Control and Planning• 3D System Design• Unit Price Estimating• 4D Planning and Site Utilization Planning


OPERATE

• Record Model• Asset Management• Space Management• Disaster/Emergency Planning• Building Performance Analysis• Maintenance Cost Estimation• Building Maintenance and Renovation

CoordinationDESIGN COMMUNICATION SYSTEM ANALYSIS ESTIMATION SCHEDULING

Challenges in BIM Enabling in AEC

Expertise• People in the construction industry lack expertise

and knowledgeResistance to Change• Project managers spend most of the time on-site,

they have the liberty to work in their way• In the case of BIM, however, these project

managers need to adhere to strict guidelines and processes

Management of Information• manage resource and information• involvement and implementation of BIM by suppliers and

subcontractors will lead to management of more information

• mapping and management of resources is still done in a traditional way

• the firm has to select an experienced and skilled partner that can support with proficiency, knowledge, experience and resources


Perceived Costs• the price of the software and incompatibility with

other software• software bugs and incorrect modelling procedures as

a result of the lack of experience in using 3D modelling.

• implementing BIM has to change the work process and thus cost will incurred. However, the long term benefits are irrefutable


• Less demand from Client’s sides

• Less benefit from BIM for small projects

• No requirements of BIM technologies for typical projects


BIM in India (Status)

BIM in India (Status)• BIM is gaining popularity amongst professionals

within the Indian built environment sector

• BIM enjoys maximum popularity among experienced professionals since they have a better appreciation of

the value proposition of BIM.

• BIM is more popular in large organisations, with a large strength of technical staff, hinting that BIM implementation is more beneficial in large and complex projects

• BIM is still in its infancy stage in India

• Still has not reached a stage where users can boast about the cost savings for a project due to BIM implementation because a majority of BIM users in India have not seen a full cycle of BIM implementation for their projects

• Organizations remain sceptical about BIM implementation and its perceived benefits

BIM in India (Status)

Projects in India using BIM

• BIM in India sometime known as VDC

• Half knowledge about the subject or lack of trusted source to validate the information of BIM within the Indian AEC industry Deters the potential AEC firms, clients and project owners from using it, which ultimately amplifies the resistance to implement BIM

BIM in India ( Barriers)

• The lack of technical expertise, • The unawareness of BIM and its methodology among the industry

professionals,

• The complicatedness involved in using BIM software • The passive approach of industry professionals to

wards exploring latest technology,

• The absence of demand from clients and contractors,

• The unwillingness to transition from the traditional practices to latest technology

BIM in India ( Barriers)

Projects in India using BIM

BIM and Sustainable Design• BIM technologies provide immediate insight in how design decisions impact

building performance, while BIM processes encourage an integrated design approach – a critical strategy for making projects greener.

• Also green design and construction rely on improving building performance.

• BIM models can also give more information to product manufacturers, which can eliminate waste.

• Using BIM, extended design teams can visualize design changes and simulate how various scenarios will affect building performance.

• With this direct feedback, designers can analyze alternatives that will improve energy efficiency, optimize for natural light and ventilation, evaluate viability and placement of solar panels, and more

Sustainable BIM – Masdar City Headquarters

Masdar City AIM• AIMS TO PROVIDE HIGHEST QUALITY OF LIFE

• REDUCE WASTE TO ZERO

• RECYCLING SYSTEMS

• USE OF SUSTAINABLE MATERIALS

• SOLAR PANELS

• WIND FARMS

• GEOTHERMAL ENERGYWORLD'S LARGEST HYDROGEN POWER PLANT

Masdar believes in the “Triple Bottom Line” approach to Sustainable Development

• Social SustainabilityIs it Liveable and Desirable

• Economic SustainabilityIs it Cost Effective to O&M

• Environmental SustainabilityIs It Carbon Neutral

Masdar City

• Inspired by the past- Narrow streets- Natural shading-High Density/Low Rise Living- Public spaces- Mixed Use- Walkable

Masdar Headquarters• Type – Mixed-use scheme • Location – Masdar City (Abu Dhabi) • Site – Green field (uninhabited desert) • Project Team – Fosters and Partners (Architects)

• Masdar Institute of Science and Technology and Massachusetts Institute of Technology (MIT) (Joint Investors)

• Abu Dhabi Future Energy Company (ADFEC) (Driver)

• Size – 6 square kilometres accommodating 40,000 residents and host a range of businesses and institutions employing 50,000 workers

• Completion Date – The flagship project phase 1 of the city is under development. Completion set for 2016.

Socio-Economic• Intentions -Masdar’s mission was to break boundaries and

showcase sustainable construction

• Masdar City is seeking to make a financial return on their investment through its research knowledge in renewable technologies

• Location and Facilities -Masdar City is designed as self sufficient communities

• Masdar provides amenities ranging from a state of the art research and commercial units to general shops.

• Air quality and comfort - Trying to cool the temperature to provide comfort

• Masdar City on the other hand, has no windows positioned flat on to direct sunlight to minimise solar gain

• Wind cones funnel wind down the towers to ventilate public squares at its base; the air is cooled by water sprays to replicate air conditioning

• BIM enabled the architects to model and test different shaped wind cones and base openings to achieve the most efficient wind velocity

• Masdar City have designed out the need for conventional heating and cooling systems without compromising exceptional levels of comfort with minimal environmental impact

Socio-Economic

Technical• BIM allows validation of design assumption with certainty as the intelligent

model is constructed virtually to eliminate errors, this was essential for Masdar. Increased co-ordination was achieved as design meetings were arranged hourly as opposed to the traditional weekly approach with CAD

• BIM allowed Masdar’s architects to add several dimensions to the model such as 4D construction schedule information, 5D adding cost/budget components, 6D adding facilities management components and 7D sustainable components (manufacturers, recycled content, embodied energy etc).

• The usefulness of Masdar’s BIM model extends beyond its construction. A truly intelligent database on a city scale has been created through BIM which allows future projects of Masdar to be integrated into the same model. This enables a real-time view of the cities energy performance, energy use for the entire city and tracking of its carbon footprint .

• Construction - Masdar’s architects had to re-think the construction process to meet the clients desired sustainable targets

• The construction phase must be closely monitored to ensure minimal waste and optimal resource use.

• One of the main problems is Abu Dhabi’s extreme temperature; typically construction can only take place in the morning and late afternoon.

• BIM allowed the design team to model alternative construction sequencing with the roof/trellis constructed first and independent of the floor slab. This provided a micro climate for the workers to work full days and the Photovoltaic (PV) roofing system generated energy (net zero) from the first day of construction. The reduced temperature has increased worker performance.

Technical

Technical

• Masdar’s design team created a 4D programme simulation which was assigned to the virtually constructed model to guide the contractors through each phase of the development.

Environmental

• Energy Use - Masdar aims for zero carbon emissions, zero waste and 100% power generated through renewable energy, resulting in a reduction in Abu Dhabi’s dependence on fossil fuels and pollution.

• The use of PV’s, biomass energy, geothermal energy, burning waste residents produce to make energy, using water sprays cool the wind as it’s funnelled down the tower to ventilate a public spaces, paperless document management system,

• Transport energy - No gas guzzling cars are allowed within Masdar city.

• an underground network of automated cars span the entire city.

• These cars are powered by electricity produced by the PV’s.

• Water Use- Masdar is set on reducing water consumption by a third. Not a single drop of water is to be wasted as all gray water is to be treated and re-used

Environmental

Conclusion• The socio-economic and environmental aspects can both be

addressed by simply re-thinking the construction process including the sourcing of recycled and reclaimed materials where possible

• However, BIM provides a better platform to address the technical issues. The benefits such as increased communication, design integration, lean construction, reduced waste, paperless documentation, clash detection, costing, programming, simulation and modelling are far superior to that of CAD.

• BIM will then enable the most efficient delivery of a sustainable development

1. Autodesk Website2. A Practical Approach to BIM by Cadline community3. BIM guide by ASHRAE members4. BIM Handbook: A Guide to Building Information Modelling for Owners, Managers, Designers,

Engineers and Contractors Hardcover – Import, 28 Mar 2008 by Chuck Eastman (Author), Paul Teicholz (Author), Rafael Sacks (Author), Kathleen Liston (Author)

5. Building Information Modelling For Dummies By Stefan Mordue and Paul Swaddle6. Gavin Lea ,Department of the Built and Natural Environment, University of Central Lancashire,

Preston, UK7. Autodesk. (2010). The Advantages of BIM-Enabled Sustainable Design for Improving

Commercial Building Performance. Autodesk Whitepaper, 1-5. 8. Autodesk. (2011). Realizing the Benefits of BIM. San Rafael, CA: Autodesk.9. Building Information Modelling Execution Planning Guide ©2010 The Computer Integrated

Construction Research Group The Pennsylvania State University10. BIM for Govies™11. State of BIM Adoption and Outlook in India, RICS AMITY University12. Masdar Overview (Web Version) Derek Gliddon - Masdar

References

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