N.U.R Corridor Bamandongri and Kharkopar Railway Station

Bamandongri and Kharkopar Railway Station was envisioned as large-scaled architectural landmarks in the ever-expanding fabric of the urban sprawl at Ulwe and beyond. With the upcoming Navi Mumbai International Airport (N.M.I.A) at Uwe, the anticipated development of housing, commercial activity, industries, and various other domains, is projected to be one of the largest in 21st century India.

The complexes have been designed to provide seamless transfers between connecting nodes and further destinations. HSA has considered the spatial needs of the railways to support the rail and transit operations while focusing on the experience of users in transit within the station complex.

With the continued legacy to design efficient, functioning and iconic architectural landmarks of HSA, I was appointed by CIDCO to design the transit based architectural projects on the N.U.R corridor. We have envisioned the railway stations at Bamandongri and Kharkopar being large-scaled architectural landmarks in the ever-expanding fabric of the urban sprawl at Ulwe and beyond. The planning of Bamandongri & Kharkopar railway station has been ideated to accommodate future capacities with a strong emphasis on regional interconnectivity. The efficient teamwork between all the stake holders has resulted into seamless integration of this multi modal hub as one of the best examples of the HSA’s philosophy of Human Centric Design. The stations along the N.U.R corridor will provide a great sense of pride for residents and be a prized possession of CIDCO, Indian Railways and mostly, for the residents of the emerging city.
Ar Hiten Sethi, CEO, Hiten Sethi and Associates

Design Ideology
Theme-based station development ideas was presented for the four stations – Sagarsangam, Targhar, Bamandongri, and Kharkopar respectively. The planning of Bamandongri & Kharkopar railway station has been ideated to accommodate future capacities with a strong emphasis on regional interconnectivity.

A contemporary theme of the geometries of motion has been the inspiration for the architectural expression of the projects. Grand concourses on both sides of the station welcome and guide the users to the ticketing areas and subways that lead to the elevated platform areas. On entering the platform level, the platform roof design based on efficient structural sizing for a 38M span provides natural light and is made up of aluminum standing seam interwoven with polycarbonate. This presents a grand experience to the commuters at this transit hub.

The full-length louvered walls on both sides of the station always ensure complete ventilation and the symbiosis between the colors and material palette generate a vibrant atmosphere. The designs are based on efficient structural design, low maintenance structures, naturally lit and ventilated public areas, efficient circulation and a grand experience to the commuters at the transit hub.

Kharkopar Railway Station, has also been designed to be one of the finest transit architecture expressions of Modern India. The location being immediately across the International Airport, the interface of the Sky Train, Metro, Railway Harbor line and public buses have been meticulously planned for the efficient functioning of the multi-modal transit hub. They shall complement the state-of-the-art development of Navi Mumbai International Airport and the allied growth and infrastructure development of various sectors. The stations along the N.U.R corridor will provide a great sense of pride for residents and be a prized possession of CIDCO, Indian Railways and mostly, for the residents of the emerging city.

Structural Specifications
Following are the structural elements we used for Bamandongri and Kharkopar Railway Stations:

  • Main frame profile for column – Dia 1200 x25th, top circular member – CHS 356X12thk
  • Secondary frame – CHS 356X12thk, SHS 300, fabricated box from ISMC300

Uniqueness
The Unique things about the structure are as follows

  • Parabolic pipe arrangements for roof.
  • Color combination of roof sheet and extended arrangement for polycarbonate sheet.
  • Fins on both side of elevation

Steel Used
The Steel Sections with grades used for the project are:

  • Material grade – IS2062 – E250
  • Sections – ISMC-75, ISMC-100, ISMC-300, ISMC-400, CHS355.6X12, CHS406X12, PIPE 900X12, PIPE 1200X25, RHS 240X120X6, RHS100X100X5
  • PLATE THICKNESS – 6 – 50MM

For Bamandongri station 2500MT of steel and for Kharkopar station approx. 1500MT of steel was used Connection design was used for member to member, for easy erection process. Whereas Crain 25MT, 50MT and 100MT was used along with H frame scaffolding, fabricated Derick as well as Mechanical and electrical winch was used.

Encounters
The major challenges we faced during fabrication and erection of structural steel:

  • 36MTR circular truss erection at more than 15mtr height.
  • Erection of parabolic truss at zero – zero level.
  • To overcome this issues, hi-tech equipment and skilled manpower were used.

The team followed their own specialized HSE program. The safety engineers’ team was having very good experience for fabrication and erection of such structures. Everyday mockup and safety drills for each workman with proper monitoring systems was followed.

Welding processes used for this project are:

  • SMAW – Shielded metal arc welding
  • MIG –metal inert gas welding (co2)
  • SAW – Submerged arc welding
  • For Bamandongri station total manpower was around 52 (Average) and Manhours were 104832 approx.
    And for Kharkopar station total manpower was around 45 (Average) and Manhours were 75600 approx.

Features
Entrance:
The drop off and pick up areas are designed keeping in mind the users and their priorities at the station and to enable the users a quick commute through the station into the trains. The multiple access points to the platform area are designed such that the route of the regular pass holding commuters and the ones travelling after buying the ticket is totally segregated. This enables the regular commuters to fast track their passage through the station to and from the platforms. This also helps the ticket buying commuter to avoid the rush hour crowd while entering the station. This enables bringing in efficiency in terms of peak hour management.

Concourse Area: Grand concourses on both sides of the station welcome and guide the users to the ticketing areas and subways that lead to the elevated platform areas. The spaces and the detailing in the project are designed keeping seamless wheelchair accessibility in mind. All the areas can be accessed via ramps having gentle slopes and lifts are provided from the concourse area directly onto the platforms to enable movement of dignity for the passengers on a wheelchair. Grand height of 10M will give commuters a look and feel of spaciousness. Full Light and ventilation are the keynote one can find with proper shading for comfort of users.

Platform Area: On entering the platform level, the platform roof design based on efficient structural sizing for a 38M Span provides natural light and is made up of aluminum standing seam interwoven with polycarbonate. This presents a grand experience to the commuters at this transit hub. The full-length louvered walls on both sides of the station always ensure complete ventilation and the symbiosis between the colors and material palette generate a vibrant atmosphere.

The platforms can be accessed through 2 subways. Each subway further branches out in to left- and right-hand wings leading on each platform thereby creating ease of circulation and disbursement of peak hour crowd quickly out of the station thereby emptying the station well in time to receive the passengers commuting by next train.

Public Facilities: Toilet blocks are located next to each subway on both the sides of the station, making it most convenient for the passengers. The facility for drinking water cooler is provided at 2 locations next to the exit of the subway on each platform such that the passengers would not have to walk very far away to access the clean drinking water at the station.

The designs are based on efficient structural design, low maintenance structures, naturally lit and ventilated public areas, efficient circulation and a grand experience to the commuters at the transit hub. Building material: Along with the desired design performances, Life Cycle Analysis methodology has been used for selecting building materials. The primary structure is designed in M40 grade of RCC and the multi cell polycarbonate sheets are used for sky lights on roofing. These lightweight low maintenance and durable sheets enabled the designers to reduce the dead load on the structure and bring in adequate diffused daylight on the platforms.

Building materials like material for flooring, cladding, etc. all have been chosen based on their high rating on the life cycle analysis performance. Services: The total connected load of the project is 440 kW. Provision for solar lighting system of is provided on Aluminum standing seam roof based on clip-on system. 75,000 liters of water per season is collected via rainwater harvesting system installed at site and is used for flushing and cleaning.

This project has been a unique combination of the highly technical aspects to be combined with multi modal transit hub planning along with peak hour crowd management while designing an iconic structure that shall become identity of the said locality. The efficient teamwork between all the stake holders has resulted into seamless integration of this multi modal hub as one of the best examples of the HSA’s philosophy of Human Centric Design.

Fact File

Client: CIDCO
Architect: Ar Hiten Sethi, CEO – Hiten Sethi and Associates
Structural Consultant: SEMAC Consultants Pvt Ltd
Contracting Agency: M/s J.M. Mahatre Infra Project Pvt. Ltd.
(For Bamandongri)
M/s Kalpna Struc Con. Pvt. Ltd. (For Kharkopar)
Fabricator: INSTEEL Engineers Pvt Ltd
Steel Supplier: Jindal Steel, SAIL, Tata Steel & Apollo
Status: Project Completed and Operational

Comments are closed.