Open side-bar Menu
 3DEXPERIENCE Construction

Archive for the ‘AEC’ Category

BIM and the G20 Meeting Hall

Thursday, July 20th, 2017


Article by LU ZHI-HONG, General Manager, Zhejiang YASHA Decoration Co., Ltd., BIM Center; Member, China Graphics Society BIM Committee; Deputy Editor of BIM Standards for Interiors and Curtain Walls, China Building Decoration Association.

When the 2016 G20 summit was planned to be held at the Hangzhou International Expo Center, Zhejiang YASHA Co., Ltd. took on the major project for the core meeting area.

This construction project involved dynamic designs, complicated construction techniques, a short timeframe, and special security requirements.

The overall design and construction work was very challenging, particularly the G20 main meeting hall.

The Building Information Modeling (BIM) team at YASHA used on-site 3D laser scanning, parametric modeling, streamlined design and fabrication, and other BIM techniques to help designers and project managers flawlessly complete their tasks and ensure the seamless construction of the G20 main hall.

click-to-tweetTweet: The story of #BIM & the G20 Meeting Hall in
Hangzhou, China | @3DSAEC @aeccafe

Background and Goals for BIM on the Project

The Hangzhou International Expo Center is a landmark project for the city of Hangzhou. It was selected as the site of the 2016 G20 summit.

Because of the site’s special functions and the short construction timeframe, construction proved to be extremely challenging. Most difficult was the complicated design and high construction standards for the G20 main hall.

To address this challenge, our company began preparing our BIM technology well in advance of the project. Our company put forth its full effort, organizing designers, builders, and BIM personnel into a working group to employ BIM technology during the design and construction phases to ensure high standards. This allowed us to achieve our goal of high levels of quality, efficiency, and control.

BIM Software and 3D Laser Scanning Technology

Decoration is the last work process in a construction project. Quality problems or errors in construction, structure, or electrical or mechanical systems will have a significant impact on the design and construction of decoration elements.

To avoid these problems, our company used 3D laser scanners to gather as-built structural data, and then conduct reverse modeling to compare with the original design and quickly, visually, and accurately find construction errors.

On-Site Data Gathering and Reverse Modeling

Our first task when we begin a project is to conduct an on-site structural check. From our previous project experience, we have found that are varying levels of error between the construction design data and the actual project.

Because of this project’s special nature, our company immediately arranged an on-site survey using advanced 3D laser scanners to collect complete structural data.

On-site surveying work

We then conducted cloud-based data processing and reverse modeling to create a completely 3D digital model of the site.

Data imaging of main hall

Cloud-based data of site structure

CATIA structural reverse modeling

With this data, we can develop a detailed decoration design based on a reverse model that is identical to the actual space.

Reverse Model-Based Design Analysis

After integrating the completed design into the reverse model of the site, we found serious discrepancies between the model and the construction drawings, resulting in a serious conflict between the steel structure and the design of drop ceiling.

The drop ceiling would be embedded in the steel structure such that the four-cornered eaves would extend beyond the steel structure by over a meter.

Proceeding with construction based on this original design was impossible. Our designers and builders held emergency consultations to find solutions. Since the project deadline was so close, it was impossible to conduct alterations to the steel structure.

After multi-stakeholder discussions, it was agreed to redesign and lower the drop ceiling to accommodate the existing structure.

Conflict between the CATIA structural model and drop ceiling design

Amended design model based on on-site structural data

Detailing and Optimizing Design Based on BIM

BIM has been widely recognized as revolution in the construction industry. Direct 3D design and delivery is the trend. Not only is this a technological revolution, it is more importantly a complete process innovation.

During the design phase, BIM models were created for the architectural, structural, and interior elements of the project. Decision-making based on intuitive 3D scenarios allowed the project to truly achieve visualized design, such as complex spatial relationships, perspective effects, and optimization of component shaping.

BIM enables “what-you-see-is-what-you-get” design, and allows designers to make the best decisions.

click-to-tweetTweet: “#BIM enables what-you-see-is-what-you-get design & allows designers
to make the best decisions” @3DSAEC @aeccafe

Visual Plan Selection

Because the north-most corner eaves faced the largest impact and had to be dropped by over a meter, the lead designer was very concerned about the visual effect on the final result.

As such, our BIM team used parametric modeling technology to make multiple adjustments to the curve of the drop ceiling. After comparing multiple plans, it was decided to abandon the original plan and instead drop all the corner eaves.

By increasing the curve of the drop ceiling, we were able to achieve an acceptable visual result without scarifying the net space. This plan garnered agreement from the project manager and owner.

Adjustments to the curved outer layer of the drop ceiling

Choosing between different radial drop ceiling designs

Final drop ceiling plan

Streamlining and Optimizing the Design

The BIM design process allows multiple designers to work collectively within the same model. It compiles relevant information, and enables better coordination between disciplines and between designers. It reduces inefficiencies and liberates designers from the endless revision process. This frees up time and energy to optimize, improve and check plans, thereby achieving streamlined design.

Original window design

Optimized window design

Photo of finished window

The Chinese-style eaves design had four beams, originally designed to be 600×900 arched beams. However, the project manager found that in the BIM model, the beams looked too bold. Using the BIM model, our team created design options of different sizes of beams.

After multiple discussions and adjustments, it was agreed to resize the corner beams to 600×600 and to make targeted adjustments to the bracket design.

Original 600×900 corner beams

Final 600×600 corner beam result

Actual photo of implemented beam and bracket design

The BIM design achieves shortcuts for fabrication design. During the design, we fully consider the process of fabrication and construction. In-depth BIM software models all the way out to process accuracy, and creates process data to ensure seamless information handover.

The G20 main hall included 352 rafters of varying sizes and shapes. When the shape of the drop ceiling had to change, so did the rafters. Because of the difference between the as-built steel structure and original drawings, frequent adjustments were made during the fabrication design process, which led to huge amount of shop drawing changes. As soon as the design was confirmed, data needed to be sent to the fabrication site.

A traditional design process would never satisfy this level of speed and accuracy, so we used CATIA, advanced parametric design software, for our work.

The main steps were:

  1. Draft the drop ceiling shape design
  2. Confirm rafter and corner beam cross-sections
  3. Bind the rafters and beams based on parameters and curved surface
  4. Automatically generate rafters and beams based on parameters to create drop ceiling
  5. Generate shop drawings for each rafter and beam using 3D model
  6. Use CAD markup and submit to fabricators

Using this parameter-based design plan, as soon as the surface of the drop ceiling was confirmed, the fabrication data for the rafters could be quickly produced. This greatly increased accuracy and improved links between design and fabrication.

Without parametric design software, creating and repeatedly adjusting designs on such a short timetable would have been impossible.

click-to-tweetTweet: #Parametric design software makes it possible to create &
adjust designs on short timetable @3DSAEC @aeccafe

Confirmed surface model

Rafters automatically generate based on curved surface to create the drop ceiling

Rafters automatically generate based on curved surface to create the drop ceiling

Model directly creates process blueprints

For this project, YASHA brought forward the most advanced technology and best talent. Based on complete on-site data, we created accurate and parametric designs, and used BIM models to provide design data, quantity take-off, and reasonable and feasible shop drawings.

Because of our use of advanced technology and stringent implementation, leaders from around the world could meet under the hall’s flying eaves to discuss global affairs and enjoy the ambience of Chinese architecture and the distinguishing features of southern China.

G20 Meeting Hall

In the last few years, BIM software has taken off in China. Thanks to the 2008 Beijing Olympics and 2010 Shanghai World Expo, BIM software has begun to become widely used. But the use of BIM software in construction and interior design has come about relatively late.

With the successful completion of the G20 summit and the high-profile G20 main hall project, the use of BIM software in the construction and interior design industries is bound to grow.


  • HUANG Bai. “Observations on the Development of BIM in China’s Construction and Interior Design Industries [N]”. China Construction Journal. 2015 (008).
  • ZHANG Yu-ping. “On the Application and Development of BIM in Construction, Interior Design, and Renovation Projects. Urban Construction Theory and Research: Electronic version.” 2013(24).
  • LÜ Fang, WEI We, YANG Jia-yue.  “Shanghai Modern Engineering Consulting Co., Ltd. Uses BIM to Quickly Improve Overall Project Control [A]”. BIM and Engineering Construction Informatization – Third Collection of Forums and Papers on Innovative Engineering Construction Computer Programs[C]”. 2011.

Related Resources

Supply Chain Integration and Collaboration White Paper

Technological Changes Brought by BIM to Façade Design White Paper 

Design for Fabrication Industry Solution Experience

How Can BIM Software Locate Bridge Faults?

Thursday, July 13th, 2017

Powered by the 3DEXPERIENCE platform, CATIA & ENOVIA applications help to vastly improve speeds on Chengdu’s Second Ring Road.

Chengdu’s Second Ring Road is the city’s largest municipal construction project. The road is over 28 km long and 8 lanes wide.

After completion of the first construction stage, it had only 6 overpasses.

Renovations were completed within a year, with simultaneous design, revision, and construction work resulting in the construction of 2,128 piers, 2,323 caps, and 6,785 piles by the hands of over 4,000 workers.

When the road was opened in May 2013, it was the city’s only express road devoid of stoplights. It serves over 200,000 people each day, significantly relieving traffic congestion.


AEC Industry Trends: Driving Toward Connection, Digitization, Transformation

Thursday, June 29th, 2017

In his recent Architecture, Engineering & Construction Industry Trends presentation, Marty Doscher, Vice President, AEC Industry, Dassault Systèmes, identified four accelerating trends that are driving transformative changes across the industry:

  • Higher usage of Design for Manufacture and Assembly (DFMA), prefabrication, and modular construction.
  • More data-driven decision-making as a result of greater BIM adoption.
  • Expansion of Building Information Management (BIM) beyond design—in all stages of the project lifecycle, and by users across all disciplines.
  • Growth of augmented and virtual reality (AR/VR) as a social industry experience.

click-to-tweetTweet: 4 growing AEC trends: #prefab, data-driven decisions,
expanded #BIM, & #ARVR | @aeccafe @3DSAEC

As these industry trends build momentum, demand is growing for solutions to overcome the barriers to greater success.

For example, with increasing BIM adoption, Doscher expects to see a further increase in the use of VR as a design tool that boosts collaboration.

The 3DEXPERIENCity “Experience Room” is one example of how AR/VR tools work for AEC: stakeholders are projected into a collaborative workspace through which experts from government, business, urban planning, infrastructure design, and so on, can work together in harmony to define a city’s future.

click-to-tweetTweet: #BIM data drives demand for #ARVR in urban planning |
#3DEXPERIENCity @aeccafe @3DSAEC

The Experience Room, on the 3DEXPERIENCE platform.

The Shortcomings of BIM

BIM solves some of the AEC industry’s problems, but is not a total solution. BIM alone is incomplete.

click-to-tweetTweet: “#BIM alone is incomplete.” @MartyDoscher
@3DSAEC @aeccafe

Most projects are still over budget and behind schedule—even now, more than 15 years after BIM was introduced.

Today’s document-centric BIM methodology is still unable to break down silos among stakeholders. Too much energy is spent managing lines of communication that, when broken, lead to RFIs and heavy administrative costs.

Plus, design, construction, and operations remain separate from one another. Once a facility is built, the operations team may receive BIM data. However, this data is insufficient for what is needed to support long-term maintenance. Instead, the operations team typically creates their own “digital as-built” of the facility with the information they need.

Intelligent 3D Curtain Wall Design

Friday, June 23rd, 2017

click-to-tweetTweet: Intelligent 3D #curtain_wall Design | @Desktop_Eng @3DSAEC @aeccafe
glass facade

Republished with permission from Geoff Haines, Desktop Engineering

Goethe said that “By seeking and blundering, we learn.”

Well I am not so sure that I would like to start a career in engineering knowing I was blundering in order to learn. But his point is bluntly put – that what we call knowledge is gained through making mistakes.

In other words, engineers push the envelope in design, making things bigger or lighter until they fail and then seeking out what went wrong.


Case Study: 3DEXPERIENCE Enables KKAA to Renew Its Focus on Materials

Thursday, June 15th, 2017

Kengo Kuma and Associates (KKAA) have taken on larger and more complex projects, and expanded around the globe. Through this growth, as KKAA worked to maintain data accuracy, a strain was put on its previous 3D modeling software.

The company therefore adopted the 3DEXPERIENCE platform on the cloud—and the Design for Fabrication industry solution experience—to accurately manage a wide variety of parameters in real-time, across multiple disciplines, during the development of architectural projects.

As a result, KKAA streamlined its design creation and change processes, created a single database of revisions for future reference, and improved design quality while retaining the essence of the “Kengo Kuma” design philosophy.

Reimagining Manufacturing and Architecture

Thursday, May 25th, 2017

While architects once straddled a chasm between creative thinking and technical knowhow, that gap has closed in recent years. Technical tools continue to blow away the restrictions that have hindered architecture in the past.

This was one takeaway at a presentation given during Design in the Age of Experience 2017.

John Cerone, director of Virtual Design and Construction, for SHoP Architects, explained that architects are increasingly looking to step outside of their traditional roles.

“The AEC industry is restricted by a lot of traditional methods. We’ve realized that to create the design you want, you have to step out and speak with the people manufacturing the pieces and parts,” Cerone commented.

click-to-tweetTweet: Architects have to speak w/the people #manufacturing the pieces & parts @SHoPArchitects @3DSAEC @aeccafe

David Wong John Cerone

David Wong (left), head of the Additive Manufacturing Innovation Center, Nanyang Polytechnic, explained with John Cerone, director of Virtual Design and Construction, SHoP, how new manufacturing processes are pushing possibilities in architecture.

Additive Manufacturing Creates New Opportunities

One of the technologies delivering new freedom to design professionals is additive manufacturing.

David Wong, head of Additive Manufacturing Innovation Center, Nanyang Polytechnic University in Singapore, shared the stage with Cerone to explain how the growth of this new manufacturing process isn’t just transforming the possibilities available through architecture—it’s also pushing the design process further as design and manufacturing professionals together explore the need for new processes.


No Holding Back: Infrastructure Engineers Push for BIM Standards

Thursday, May 18th, 2017
JONATHAN RIONDET, AEC Solutions, Dassault Systèmes

“BIM must extend beyond buildings to support infrastructure and Smart Cities” JONATHAN RIONDET, AEC Solutions, Dassault Systèmes

“BIM must extend beyond buildings to support infrastructure and Smart Cities” JONATHAN RIONDET, AEC Solutions, Dassault SystèmesMuch of the productivity-boosting potential of BIM for transforming the AEC industries has been inspired by the use of digital mockups in the manufacturing and aerospace industries.

The Chrysalis Emerges: Celebrating the Success of a Powerful Collaboration

Thursday, May 4th, 2017

A dedication ceremony for the Chrysalis — part sculpture, part amphitheater, part park pavilion — tucked in the woods of Columbia, Maryland, allowed the community and project stakeholders alike to fully experience the structure’s scale and precision firsthand.

chrysalis from air Dassault

Images courtesy of @azahner

The endeavor was shepherded by Michael McCall, President of Strategic Leisure (on behalf of the Inner Arbor Trust), and designed and delivered by A. Zahner Company, Arup, Living Design Lab, THEVERYMANY, Whiting-Turner, and a suite of other talented AEC professionals.

As the Downtown Columbia Partnership observed, “Seemingly no line stands still. Its look is dynamic and flows in a manner of ‘calculated serendipity’.”

Chrysalis-Press Release image1

Image © 2017 Inner Arbor Trust


Leveraging the Full Value of BIM’s Interoperability Potential

Thursday, April 27th, 2017

Despite the widespread adoption of BIM tools among design professionals, the AEC industry is still in many ways at the surface of the true benefits BIM platforms can offer.

“BIM should not be seen as just a way to do a beautiful 3D image from the project, but as a tool for true collaboration that should be the industry standard,” commented Jonathan Riondet, AEC industry solution technical director for Dassault Systèmes, during a recent presentation at BIM World.

click-to-tweetClick to Tweet: “#BIM is not just for beautiful 3D imagery—
it’s a tool for true collaboration” @jonathanriondet

Riondet explained that interoperability—across trades and data platforms—is key in realizing the great collaborative power of this data tool.

JONATHAN RIONDET, Director of AEC Solutions

“The collaborative BIM platform brings new services for all” – JONATHAN RIONDET, Director of AEC Solutions, Dassault Systèmes


Creativity Unleashed at the AEC Design Hackathon

Thursday, April 20th, 2017

At the Design in the Age of Experience 2017 AEC Hackathon, we brought 13 CATIA R&D experts from Dassault Systèmes together with 17 architectural design professionals from the world’s most progressive firms, including:

  • Zaha Hadid Architects
  • SHoP Architects
  • HKS Architects
  • Kengo Kuma and Associates
  • Morphosis
  • CO Architects
  • New Jersey Institute of Technology
  • CadMaker

The objective of the hackathon was to create innovative building designs in under 24 hours with CATIA’s latest generative modeling applications on the 3DEXPERIENCE platform.

click-to-tweetTweet: Creativity Unleashed at the @Dassault3DS #AEC
Design Hackathon @aeccafe

Champion users from the 3DEXPERIENCE Construction TRIBE formed 6 teams and spent 24 hours straight creating more than 60 lifelike renderings.

GRAPHISOFT: ARCHICAD download 30-day FREE trial
Canon - Countless CAD add-ons, plug-ins and more.

Internet Business Systems © 2017 Internet Business Systems, Inc.
595 Millich Dr., Suite 216, Campbell, CA 95008
+1 (408)-337-6870 — Contact Us, or visit our other sites:
TechJobsCafe - Technical Jobs and Resumes EDACafe - Electronic Design Automation GISCafe - Geographical Information Services  MCADCafe - Mechanical Design and Engineering ShareCG - Share Computer Graphic (CG) Animation, 3D Art and 3D Models
  Privacy Policy