Post Tensioned (PT) Slab -

PT slabs were as adopted in all the floors. It provided extra headroom which was required for the services. PT slab has the advantages of increased clear spans, extra headroom, reduced storeyed height to enable more storeys in same height of the building, thinner slab, lighter structure, reduced cracking and deflections, and quality and skilled work. It is particularly economic in case of multi-storeyed buildings. Limitation of the PT slab is that it has to be insured that it is never cut or drilled which may cause the failure of the structure.

Structural Arrangement -

The building was designed as RCC framed structure. Post Tensioned slabs were designed for all the floors to have large headroom as the building was fully air-conditioned. AHUs were placed on the lofts of the toilet blocks to economise the space. Structural glazing was designed and tested as per the requirements. Autoclaved aerated concrete (AAC) blocks were used in the infill walls.

Post Tensioned (PT) slab -

PT slabs were as adopted in all the floors. It provided extra headroom which was required for the services. PT slab has the advantages of increased clear spans, extra headroom, reduced storeyed height to enable more storeys in same height of the building, thinner slab, lighter structure, reduced cracking and deflections, and quality and skilled work. It is particularly economic in case of multi-storeyed buildings. Limitation of the PT slab is that it has to be insured that it is never cut or drilled which may cause the failure of the structure.

Dry stone cladding -

External facade has the cladding of ACP sheets and dry granite stones. For this, special arrangements were made to fix the stones. The stones were placed on four stainless steel pins as shown in figure. Each pin was inserted into two stones in which holes were drilled first.

Double stack mechanised car parking -

Double stack mechanised car parking was used in the basements as it saved the space and also accommodated the required parking as per local bylaws.

Green Building Features -

• As the project was registered for 4 star GRIHA rating, green building features were the requirements of GRIHA ratings. Energy efficient LED and T5 lights were used in the project. Apart from the fittings, energy efficient chillers were used.
• For recycling waste water, sewage treatment plant of 35 kLD capacity was provided in the basement.  Rain water harvesting arrangements were also made.
• Solar PV panels could not be adjusted on roof slab hence a steel framework was installed so that solar PV panels could be installed over the same. A small solar power plant of 20 kWp was provided

Italian Marble Flooring-

In the main lobby and lift lobbies, Italian marble flooring was used for aesthetic purposes.

Foldable Partition -

In the auditorium cum training centre, Dorma foldable partition was provided so that it can be used for large gathering by combining the two. 

Other Features -

Includes all security equipments, intelligent fire alarm system, Intelligent building management system, complete networking, construction of diaphragm wall around the basements, smoke extraction fans in the basements, gas based fire suppression system, sensor based lights in cabins and toilets, variable frequency drive chillers and AHUs, and silent DG set. The building is designed as disabled friendly. Lifts are provided with Brail language.  

CBI building in Mumbai has been constructed with latest norms conforming to all the requirements of the local bodies. It houses almost all the offices under one roof. The building is occupied fully and is operational from March 2016 onwards.

The building has achieved prestigious CIDC best project award, CPWD best completed project and IBC award.

1. In a small plot basement(s) can be provided and services planned in the same.

2. STP tanks can be manufatured at factory and placed.

3. Stack parking should be provided as it saves the space, height is already available due to airconditioning requirements.

4. PT slab leads to higher headroom.