Chandavarkar & Thacker Architects (CnT) offers a range of design services including architecture, interior design, and urban planning to meet the needs of its clients in the development, commercial, and institutional market sectors. Founded in 1947 and headquartered in Bangalore, India, its staff of 35 architects makes CnT one of the largest architectural firms in India and at its inception, the first architectural firm in Bangalore. Most of the firm’s projects are located in India and include notable examples such as Hyderabad International Convention Centre and Hotel, International Flower Auction Complex, and software campuses for Infosys, Wipro, Mindtree and ValueLabs.
An AutoCAD user throughout the 1990’s, CnT began exploring BIM in 2004, evaluating various BIM solutions to determine what software platform suited their needs. The firm transitioned to BIM with Revit Architecture in 2005 and now all of the firm’s projects are designed and documented using Revit. To date CnT has completed 10 major projects using Revit Architecture. The firm also uses Autodesk 3ds Max to create advanced design visualizations for more informed design decision-making, and AutoCAD for drafting coordination with its consultants.
Reseller: Kruthi Computer Services (Bangalore, India)
Brigade Rubix, Bangalore, India
Project: The Brigade Rubix, a 350,000 square-foot project scheduled for construction start in September of 2008, is a multi-story, mixed-use building with a 9-story office tower seated on a triangular-shaped 2-story shopping/retail base. A mid-level green roof separates the tower and base. The 2-story base includes public plazas and a grand plaza with steps that reach the roof garden above, becoming a “neighborhood park” with shopping around it.
The triangular-shaped site for this development inspired the ultimate design for the building: dynamic rectangular layers of floor plates that seem to rotate within the triangular site. The 9-story office tower resembles a giant Rubik’s cube: 3-stories per layer with the middle layer twisted 45 degrees.
BIM Experience: The powerful 3D modeling environment of Revit Architecture was essential for the efficient design, visualization and documentation of the building’s complex, deconstructed geometry. Developing and visualizing the overall aesthetic expression of the multi-story structure—with its dynamic, twisting floor plates—required viewing the model based on a variety of non-traditional view angles such as perspective, axonometric, cutaways, sectional cutaways, and so on. During documentation, the Revit model proved particularly useful for the glazing panel detailing and the production of 3D construction detail sections.
Precise design communication was essential to coordinate building utilities and structural systems, particularly in the tower section. Although the MEP and structural consultants were not using the Revit platform, CnT was still able to communicate its design by creating JPEG images from their Revit 3D views, and by publishing and sharing 3D DWG files with the AutoCAD-based consultants. To review and optimize important structural considerations such as placement and sizing of the central shear core and to study the building’s cantilever conditions across the twisting floor plates, the structural engineer met with CnT designers for brainstorming sessions using the “live” Revit model for their design investigations. In addition, once construction is underway, CnT will publish the entire Revit model to DWF and provide a complete e-document to the contractor and client/project management teams for increased understanding of floor plate stack-ups and 3D visualization.
Nitesh Buckingham Gate Project, Bangalore, India
Project: This upscale residential apartment building in the heart of Bangalore contains 12 units in a 4-story building that is nearing construction completion. The design challenge for this project was to provide more than just adequate living space stacked in repetitive floors, similar to the constrained context of adjacent neighboring buildings that are built very close to the compound wall. As such, the design sought to make the building spaces open to nature, while still providing privacy for the inhabitants.
This goal was achieved by using two external building layers: an inner layer of wood glazed windows as well as an outer layer of fiber reinforced concrete louvers that provided lighting and views for the interior while maintaining privacy. The treatment of these external skins works to bring a warm yet contemporary aesthetic to the building. Hence every apartment has a combination of uniquely linked spaces of differing scales to demarcate public and private areas, with the areas well lit by large windows and continuous balconies.
BIM Experience: The use of Revit Architecture on this project was essential for the exploration of different design concepts—such as the duel-skinned building façade—and to visualize those complex design ideas. The design renderings—both from Revit and more advanced renderings that the firm produced using 3ds Max—helped the firm communicate the design faster to its clients and consultants.
Through renderings and images of 3D views, CnT shared the design model with its structural consultant to collaborate on and coordinate the structural systems of this complex structure. Creating precise details in 3D to depict ancillary building components such staircases, railings, louver systems and so on, was particularly useful during the building’s construction—giving the contractors and craftsmen a better understanding of the design than is normally conveyed in 2D drawings.