Microsoft B4, India

Microsoft India has planned to expand its office campus to construct the building with 5 floors and 4 basements floors.

THE PROJECT

Microsoft India has planned to expand its office campus to construct the building with 5 floors and 4 basements floors. The complete structure is built with precast elements, while the isolated footings are cast in-situ concrete.

The depth of the raft, below ground is more than 15 metres deep, which was challenging task to cast concrete while continuously dewatering. The footings were massive with more than 2 m depth. Waterproofing application of Fosroc Membrane HDPE –P Std, was a difficult task, for such a large deep basement.

Contractor for this Project is M/s Katerra, while the consultants are INNOTECH from Bangalore.

THE SOLUTION

Fosroc team worked out the detailed complete methodology and scheme to carry out the application with the developer & consultant. The solution worked out was with Nitoproof 600PF for the retaining wall and Fosroc HDPE-P standard for basement raft and footings, while HDPE-S was suggested for footings verticals.

This was the first time that Fosroc offered the self-adhesive version of the HDPE membrane, in this project.

The precast structural joints were addressed with FBO tape, over which PU based Nitoproof 600PF was spray-applied.

SITE SUPPORT

Fosroc technical team support on this complex application was highly appreciated. This was the first time Fosroc was able to work on a large precast structure with deep basements, which was a huge success.

Having studied the precast erection methodology & soil analysis before making the site specific proposal, was highly appreciated. On-site application testing and strict adherence to application methodology, was a rewarding experience for Fosroc and to high satisfaction of the clients and consultants. HDPE- P & S were fully bonded systems that were meant to mitigate lateral migration of water and protect the buried concrete.

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