Steel Marvels

Swaran Dwar, Ambala

The Government of Haryana intends to celebrate Swarn Jayanti year of the State of Haryana Keeping in mind the Golden Jubilee event the Government of Haryana has decided to install a Commemorative Structure and Tableau depicting progress of Haryana in last 50 years Rich heritage/Culture/History etc. are required to be displayed.

Initial Thought
Haryana is the land where knowledge of Geeta was imparted to Arjuna by Lord Krishna. The thought of a structure which could easily span the 55 m wide road, be a symbol of Geeta Gyan and yet be iconic. Bow n arrow symbolizes focus, which, is arguably the most essential thing needed for achieving success in any endeavor be it the war, implementation of any state policy or for prosperous business.

 

 

 

The Swarn Dwar is an amalgamation of cultural beliefs, portrayed through a contemporary design. Stainless steel was chosen because of the flexibility of steel and the idea that stainless steel requires no or minimum maintenance and does not get affected by moisture dust or water. Also, the cladding PVD coated gives the
structure a unique look. The entire project was completed from foundation to erection in just 30 days and this was due to the flexibility of steel. The Contemporary Dwar will stand to greet all passerby of NH-44 CHD – Ambala for a long-long time.
RENU KHANNA
PRINCIPAL ARCHITECT, RENU KHANNA & ASSOCIATES

 

Design Idea
The concept design of the Swarn Dwar is envisaged as a Bow which is to be placed on the National Highway near (Apprx 500 Mtrs) Kingfisher resort towards Delhi. The Bow is so placed as it covers all three road (road from Delhi To Chandigarh which further diverts to Chandigarh and Amritsar and road from Chandigarh to Delhi and road from Chandigarh to Ambala Cantt. The Bow is spanning approximately 180’-0” with two side anchorage in shape of steel columns and one central column placed on the median. The height of the bow is 18’-0“ to 40‘-0” as per minimum height guidelines.

The bow structure is made up of stainless steel 304 grade pipes which are cladded with PVD coated laser jet cut stainless steel sheet supported by stainless steel columns. The material chosen stainless steel as it is permanent material and it has very less effect of nature i.e. water, moisture, dust etc. No or very minimum, maintenance is required for stainless steel in compare to mild steel.

The pipe structure has LED lights inside from which the it highlighted and the stainless-steel cables suspended from the central columns are lit by colour wash façade lights to create a peacock feather effect. The project also involves Lighting upto 500 mtr of the Swarn Dwar. Also decorative lighting LED are placed on both sides of the Dwar. The bow is like the primordial OM sound and the arrow is like the Jeev-atma which achieves Nirvan through Brahmanaad by the Shankh or Conch. Hence we also used 18’ long conch.

Steeling Structure
Ease of Construction with steel made it possible for us to implement the structure without having stopped the traffic even for a single day. It’s steel columns n Dhanush were prefabricated n simply placed in position by cranes.

The cladding material here too was stainless steel sheet envelope which was CNC cut to give the desired perforations out which lights radiated outward s which made it look like diamonds in a golden bow.

 

Fact File

Client: PWD Buildings & Roads, Haryana
Architect: Renu Khanna & Associates
Consultant: Renu Khanna & Associates
Steel Fabricator: Krishna Constructions
Tonnage: 25 Tonnes (SS 304 grade)
Status: Completed

Auric Hall, Aurangabad

The DAB (District Administrative Building) is the first built development within the SBIA (Shendra Building Industrial Area) and is intended to house not only the administrative functions of the SBIA, but also operate initially as the anchor building that will cater to the needs of staff and visitors, and operate as a sales center. It is expected to be the window to the SBIA.

Key Features
Since it was intended to be developed as a key Landmark Building for the SBIA, the design was envisioned to fulfill the following characteristics:

  • A landmark building with a character that is sensitive to the context of Aurangabad and its history.
  • A building with a climate responsive design incorporating sustainable design practices to achieve LEED Gold performance rating.
  • A building designed to a standard that is fit for a Grade ‘A’ modern office building.
  • A functionally efficient building meeting all relevant building code requirements, as per the recently approved Integrated Industrial Area (IIA) DCRs adopted by Maharashtra State.
  • Well integrated with natural features and landscape, within the site to create an interesting blend of built form and semi covered or open spaces while meeting access, parking and other on-site requirements.
    Initial Ideation

The design intent was to create a timeless architectural beauty, which is contemporary, and design offers delightful spaces that lift hearts. To enhance engagement with spaces where people and activities thrive. To promote Interaction of Ideas to enable effective solutions and a meaningful building which is contextual to place, is environmentally holistic & encourages ‘REDUCE, RECYCLE, REUSE.’ A building that create spaces, that strives to achieve Innovation and Transcend in expectations.

Steeling Gain
Steel has been used on the façade & roof truss, which are crucial elements of the building. For the larger truss span, steel was a choice due to its durability, structural flexibility and higher load carrying capacity. Due to the advantage of steel construction in being rapid, it was a chosen technique to fit within the constrained building completion deadline. Another, advantage of steel is that it can be constructed off-site and assembled on site which saves a lot of time and multiple works can happen simultaneously.

 

Although advanced in construction technology and function, Auric Hall is sensitive to the local context and rich heritage. The design lends a fresh contemporary touch to the traditional Mughal Architecture. Choreography of light and shadows, created by the intricacies in the bold Jaali patterns engulfing the building, along with elaborate yet structurally minimalistic gateways form a fascinating storyline. Offices and workspaces have become crucial since people spend maximum time here.
We at I. M. Kadri architects believe in building socially responsive buildings where people and activities thrive, infusing spaces with vibrancy and warmth by fostering a connection between the users and the outdoors – this thought became a key driver in the planning of spaces.
Rahul Kadri
Principal Architect, I. M. Kadri architects

Design Specifics
A Peripheral compound wall with gateways at entrances has been planned, which act as definite pause points. The design of the landscape area adjoining the approach road, is inspired by the Char Bagh concept along with a water body at its center, creating a focal point. The entrance porch design has been inspired by contextual historic elements like repetitive arches, traditional patterns, jaalis, etc.

The atrium is intended to serve as an exhibition space, with a display of artwork, to show case Aurangabad’s rich history. All levels corridors overlooking the atrium make it the central display area in the entire building. Entry-level spaces have been designed to be free flowing and transparent, to allow visual as well as physical connectivity throughout the ground floor, which houses all the public facilities. A lower ground floor has been created (partly below adjoining ground level) to accommodate public parking and VIP parking is provided on the ground floor. AITL (Aurangabad Industrial Township Ltd) offices are planned on the top most floors with adjoining terraces, which serve as apt viewing galleries for potential buyers who will visit the AITL offices.

Reanimating History
This five-story building takes its inspiration from the historic architecture of Aurangabad, where, patterns of structures like Bibi-ka-Maqbara have been used in the screens that envelope the building. This building intends to bring back to life the traditional historic elements through means of modern interpretation. Inspired from the Paan Chakki, a water cascade is featured in the landscape. Repetition and symmetry have played an important part in the designing and conceptualizing of the structure.

Contrasting to the external symmetry, it hides inside many asymmetric surprises every alternate floor has a different layout lead by strategically staggering spaces to avoid repetition and homogeneity. The building is a collage of office-spaces and terraces. Simultaneously, along with the atrium, the lift lobby and staircase connect the spaces vertically. Every lift lobby opens into green double height terraces that face the south façade on one side and a long connecting corridor on the other. On either side of the corridor are office spaces, which are offered views of green terraces or of the atrium alternatively.

Volumes and heights differ from space to space making it a memorable experience – where the atrium is as high as the building, the terraces on the three sides are double height and finally the offices spaces are a single floor height. Office spaces have been planned as per an open plan concept to enhance interactions and productivity along with the spirit and mood of the people. They work best as they help to support an interactive environment, which will eventually help them along with the entire office to thrive. In contrast, are the tranquil corridors and serene terraces, where one could introspect or retrospect as the case maybe.

Escapades
Vector works & Photoshop were the two soft wares mainly used to designing & detailing of the project from Concept to Execution. We were involved in the design process right from the concept and through detail design towards tender with the clients. And again as part of the design and build team towards execution.

The experience of working with a construction company was unique. The focus, in addition to design functionality and aesthetics, is also on the optimization of designs both in terms of performance as well as costs. Although as architects we approach any project holistically, our focus most often than not, is more on design and achieving our intent as best we can. The additional aspect here is to be able to achieve the desired design intent in the most economical, but sound way.

 

Fact File

Architect : I. M. Kadri Architects
Steel Fabricator & Supplier : B.M. Steel Works
Structural Engineer : R. S. Mandrekar & Shapoorji Pallonji Co. Ltd
PMC : CH2M
Contractor : Shapoorji Pallonji Co. Ltd
Steel Tonnage : 319MT
Status : Ongoing

Colorbond® Steel an Idyllic Solution

Today, Infrastructure is a key driver for the Indian economy and development as it raises the country’s productivity. Highways, ports, metros, railways and airports are all necessary conduits for commerce.

Innovation and continuous improvement in construction or building materials used is of extreme importance. Infra projects in modern times are getting larger, riskier and more complex. In such market environment, delivering a project with better efficiencies and reliability; using environment friendly, sustainable building materials with greater thermal efficiencies, are top priorities. More and more construction companies in the public sector space are opting for smart technologies, employing advanced building materials and construction methodologies.

COLORBOND® steel from Tata BlueScope Steel is one of world’s most advanced pre-painted steel products for the building and construction industry. It offers architects, designers, builders and owners a versatile, lightweight, strong and aesthetically pleasing solution for almost any type of built environment especially within the infrastructure landscape. COLORBOND® steel has found its way in India’s most iconic infra projects with in the last ten years.

Noteworthy Projects
Metro is not only a commuter’s delight, but also, an example of modern day infrastructure; raising the bar in design and architecture for public transportation. Tata BlueScope Steel Limited has supplied more than 1600 MT of COLORBOND® steel in form of roofing and building products for majority Metro Projects in the country.

The need for best quality material with adequate strength to endure contingencies like heavy rains, high uplift wind load and vibrational loads etc. are primary requirements of any Infrastructure project. After using Galvanised steel for the first three stations, Delhi Metro Rail Corporation Ltd. opted for Zinc and Aluminium alloy based COLORBOND® steel, solely on the merit of its benefits.

COLORBOND® steel in colours Surfmist, Pale Eucalypt, Sky Blue and Torres Blue were used, to suit the specific ambient requirements of each station. The superior coating of Zinc Aluminium alloy and an efficient paint system ensures colour durability and long life. This was the first instance where a common man in India witnessed colourful steel roofing being used for an infrastructure project like Railway System.

COLORBOND® steel suits every need with unmatched properties. Profiles made from this material are able to meet most demanding construction and design requirements while crafting roofs with outstanding performance and pleasing aesthetics. Moreover, it also helps provide weather tightness and superior resistance to wind uplift, extremely critical for the hangars pitched near the runways. It is one of the only sheets when installed helps the structure become stable and structurally co-operative.

The DRDO Aircraft Hanger in Bangalore is made of COLORBOND® XRW, Toba Blue colour. Both wall and roof comprised of over 50 MT of sheeting. The Chandigarh International Airport project made by PEB player Multi Infratech Pvt.Ltd. uses surfmist of over 200 MT; to match up the requirement of both; visual appeal and high performance.

A public utility space must ensure architectural appeal as it develops as a landmark of the city. Performance with aesthetics is what COLORBOND® steel offers where a monotonous structure transforms into an architecturally appealing piece of work. A multi-utility public space, Valpoi Bus stand and Community Hall, Goa is one such example that combines beauty with power. ZINCALUME® and long lasting COLORBOND® steel paint system transformed a traditional public utility space into an unconventional piece of art. Another example where COLORBOND® steel has transformed the face of a Public infrastructure is the BRTS Ahmedabad – a public transit service.

Shree Shiv Chhatrapati Sports Complex Stadium nicknamed as Balewadi stadium; is the first of its kind and unmistakably devoted to sporting excellence, where dedication is evident from its iconic existence. It was specially built for first Youth Common Wealth games hosted in India in 2008. Tata BlueScope Steel supplied colour coated steel for the entire facade and roof of the stadium. COLORBOND® steel is incorporated with THERMATECH® Technology with high reflectivity that reduces the inside Stadiums temperatures considerably making it comfortable for the occupants. Another iconic project is the Buddh International Circuit – a pioneer in Indian motor racing in greater noida is another example where COLORBOND® steel has given a facelift to the entire structure.

COLORBOND® steel undergoes rigorous corrosion, durability testing under actual conditions which makes it ideal for rugged applications; this material is most trusted, where, public utility spaces are concerned. Being environmental friendly, it is a blend of experience and expertise that continues to spread its wings amidst architectural Landscape in India.

JSW’s Central Storage Warehouse, Dolvi

JSW, Dolvi was expanding rapidly, increasing production capacity from current 1.5MT to 15MT and needed a centralized Maintenance, Repair & Operation (MRO) warehouse to support it. The warehouse has heavy weight moving machineries like Automated Storage & Retrieval System (ASRS). With a proposed area of 1.75lakh Sqft and a clear height of 35M, this upcoming warehouse would be the Asia’s largest Automated MRO warehouse.

ThinkLink, the Turnkey Integrator of JSW’s Automated Warehouse, approached Aashray Design Consultants Pvt, Ltd (ADCPL) to design the Architecture, Structure & MEP services of this proposed warehouse. The slushy soil present at site was also a huge factor we had to consider while designing the foundation of the structure. Adding up these unique challenges and a very strict budget provided to ThinkLink, ADCPL was selected as the most appropriate consultancy firm to provide a solution to all these problems at minimal cost of construction.

Design Intent
The pallets to be stored inside the warehouse ranged from 2.5M to 33M in height. So, for the storage of these pallets, we needed at least 35M clear height within the shed. With a length of 196M and a width of 81M, we were looking at a structure with massive volume. The design team, needed to deal, with this huge structure with utmost care so as to not only make it look appealing, but to also provides structural stability to it.

The height of the building imposed upon us a huge challenge – the upward thrust. They had to respect the power of wind and had to take immense measures to make sure that the structure was held firmly to the ground.

Taking care of the structural concerns, provided with the design for the warehousing process by ThinkLink, and together, we came up with a comprehensive solution for JSW.

We, at ADCPL, have designed and successfully completed over 500 steel building projects on PAN India basis, but every once in a while, we come across new challenging and even more interesting projects like JSW’s Central Storage Warehouse!”. Doing this project has taught us a lot, not only architecturally, but to work as a team as well
L.A.Murthy, Managing Director & Amit Murao, Sr. VP
Aashray Design Consultants Pvt Ltd

 

Steel the ultimate choice
As all are aware, of the strength of steel, and, its fast-paced construction technique. To create such a huge structure in a limited period of time was in itself a challenge. The upward thrust threat posed by the strong and prevalent wind on such a huge surface area was also something that needed to be addressed. Keeping, all these factors in mind and with the intent to create huge column free spans inside the warehouse so as to support the proper functioning of the ASRS system, decided to go with steel as the primary building material for the warehouse.

The width of the building is divided in two parts by three steel columns. The larger span is 57M wide and the smaller span is 24M wide. This gave us the advantage of huge, 57M wide, column free space in the warehouse. This was a very important pre-requisite which had to be addressed for the proper functioning of the ASRS system inside the warehouse. The portals are placed at a span of 8M along the length. The shed has a clear height of 35M. To arrest the uplifting force of the wind in the floor diaphragm, we introduced floor piles as part of foundation system. The entire structure, which has been designed in 345 grade steel, has a very sleek PEB concept. 345 grade steel connections plates and splicing joints are also proposed at the point of contra flexure to ensure adequate strength in the structure.

Structural Geometrics
With a length of 196M, width of 81M and a height of around 40M, the overall shape of the warehouse were inherently moving towards a cuboidal volume. To break the monotony of the structure and to make it something different from a regular warehouse shed, curves on the roof were introduced, on the front and rear elevation of the shed. The shed is divided into two parts and these two parts can be differentiated by their heights. The smaller part is 20M in height and the larger part of the shed in 40M in height. The element which binds these two parts is the curved surface. The curve has been derived from the logo of JSW. The primary colours which are associated with their brand, i.e. blue and red have been used on the façade of the shed.

Software used and Learnings
The primary planning of the overall functioning of the warehouse was done through numerous hand sketches. These sketches were then formulated in AutoCad to arrive at a concrete plan. The options for the exterior façade design was developed on SketchUp while the final 3D model was prepared on 3DS Max.

StaadPro was used to design and check the stability of the steel structures of the warehouse.

Working on the Central Storage Warehouse project for JSW & ThinkLink and our other associates has been a great learning experience for the whole team of ADCPL. Being in the industry for the past 27 years, people might start thinking that they have learnt and seen it all. But in the field of architecture, you never stop learning. With each project we do, we get new experiences. We get to learn something new every time. This project was a huge project for Team ADCPL, and the massiveness of the project itself posed as the biggest problem to us. We got to learn the power of wind and the threat it can cause to any structure. We got to learn a lot from ThinkLink regarding Automated Storage and Retrieval System and warehouse automation. Overall, while doing this project, we can surely say that we have added a lot to our experience and knowledge and we as a team have together grown and developed immensely. The timeline given to us for the project was 18 months.

 

Fact File

Architect: Aashray Design Consultants Pvt Ltd
Client: JSW
Steel Fabricator: Phenix
Steel Supplier: JSW
Structural Engineer: bmsf
PMC: JSW

Badminton Club, Guntur

The building is intended for a posh club at Guntur. As an extension to the club, the members have teamed up with group of coaches from singapore/thailand to construct a badminton academy. Accommodations are provided in the form of luxury rooms for the coaches and visiting players. The badminton court also is intended to host national level games and is to be designed as per the norms.

The Vision
Considering the accessible roof load and that the building was to be designed as per national norms for badminton courts, structural aspects regarding, depth of trusses, spacing, decking system etc. have been intimated to the architect on basis of which the design started.

Lavaram Devineni was the architect taken on board for a generic design to the badminton court. The court roof was an 18-meter clear span slab on top of which open banquet hall has been planned.

The architect and the Consultant from Urban Shaastra design studio, were consulting Chukkapalli Ramesh (Secretary, Guntur club and also Director (Phoenix group) as they had their expertise in designing complex buildings.

Inimitable Features
The standout feature for the building is that; it is the first badminton court in the country with an accessible roof and the steel structure, foundation and the slab has been completed within an astonishing budget of 640Rs/Sft.

The Encounters
Since, the site had black cotton soil as its top strata with clear spans and loads, the number of under reamed piles required (if the structure were to be RCC) was quite high as the foundation cost was increasing drastically. A steel structure was proposed, with lesser weights considering the ground water table level, it was subjected to use racker piles.

Clients had given a strict budget upon which the need to look at cutting down the dead weight of the structure thereby reducing foundation cost. Also, steel structure erection in already enclosed area with 18m span trusses is also a challenge.

Steel the essence
Structural Steel was the only option which resolved three of the major concern which would have arised in case it would be a RCC design. Foam work for the slab at a height of 33 feet, heavy foundation loads thereby increasing piling cost and post tensioned slabs with lesser depth have lesser natural frequency. All the three are addressed with structural steel where used a lattice truss system where the intended deflection control and the vibration control was achieved.

For buildings with strict geometrical and loading constraints, only structural steel could provide economical and sustainable solution without compromise on the quality control. Contrary to the belief that structural steel solutions may not reach enough for contractors and builders. In Non-metro cities, it is quite practical, easy to convince clients as long as the cost benefit shows. In the tier 2/3, towns and cities, the workmanship for concrete structures is quite bad and the timelines for project are often exceed by long periods. If the common belief among people regarding corrosion, firefighting of steel buildings can be removed, then this would increase the scope for structural steel buildings in the near future.

To cut down the pricing, hot rolled beams and Tata Structura pipes are used in design. Both have been procured from nearest dealer. The fabrication and erection work have been assigned to Velox Ingenium Infra Pvt Ltd.

 

Fact File
Consultant: Urban Shaastra Design Studio
Fabricator: Velox Ingenium Infra Pvt Ltd.
Steel Supplier : Tata Steel
Area : 32,000 Sft
Tonnage : 202 Tons
Status : Completed

Flying House Khandala

The Flying House is inspired from the sloping site situated in the Khandala region for two friends that wanted to build two adjacent houses that would share common recreational areas.

Perceived
The house was designed for two friends who wanted it to be a retreat in the mountains, where each one could have separate domestic spaces with shared common recreational ones like the pool. But other than that, the clients didn’t have any set brief or rules or design styles. They had chosen the Architects due to their focus on creating unique projects both in design as well as construction.

Thought Process
The initial thought process, was inspired from the foggy mountains of Khandala, and the design team wanted to explore the unique topography of the site to create an innovative structure that felt that it was extruded from the surrounding contours. With the client brief in mind, it was transformed and extruded in the mountainous site to form two wings that will house their families with a cantilevered infinity pool that will give a ‘flying’ effect.

Steeling effect
Steel was considered from the beginning as a major structural and construction material since it enables a greater control on the geometry of design as well as the flexibility of doing it off-site. Any on site construction for the cantilevered sections would have been more difficult due to the steep topography and would have resulted in larger and heavier structural solutions. Steel allowed a minimum but an efficient structure that allowed the architectural intent to be taken ahead to achieve that truly flying effect on a cantilevered pool.

 

The experience so far from all the projects including this one has been an exciting and challenging one since all projects are unique, both structurally and conceptually. The fact that we are now able to build these unique concepts in India in a cost effective and aesthetically desirable manner has been the greatest reward so far.

Amita Kulkarni, Co-Founder, SAV Architects

Architectural Dynamics
Emerging from the foggy rugged landscape that Khandala is known for; the houses are supported on V shaped structural steel branching columns and are dynamically shaped to follow the sinuous curves of the mountains giving expansive views to the lush waterfalls in the monsoons. The project is designed as two wings, that are carved out of the mountains, that are supported by branching columns that pierce through the slabs to support the cantilevered portions.

The tilted geometry of the houses, as well the steel columns give a dynamic and fluid feel to the project. The cantilevered pool is one of the most interesting feature since it does not rest on any column to create a floating and flying feel. The concrete structure was equally interesting since we used the thin blade columns that allowed for structural walls creating the column free living and bedroom spaces with their unique geometries.

The design philosophy is shaped around, a combination of technology and crafts to bring architecture closer to nature both in its construction as well as in its experiential qualities while ensuring cost effectiveness and more importantly projects that reduce waste, energy and resources of this planet.

Inspirational Geometrics and software used
The designs are very much inspired from natural systems, which have evolved over so many generations. Their combination of ordinary beauty, elegant tactility, experiential sublimity and meticulous efficiency shapes the work. The geometry for this house is inspired from the topography of the mountain which we have transformed and morphed to create a mix of unique form and experience within our architecture.

The use of a mix of CAD software and modelling techniques to generate our forms. Due to experiences and networks across UK and India, it helped in research and applying new methods and processed within architectural design to the projects.

The Design team equally works with sketch physical models as that helps to understand the physicality of the design and the structural and construction constraints that the proposed designs may face during the building process.

Flying House stands alone with its distinctive architecture identity on the site, presenting large-scaled mountainous flying-landscape through flowing surfaces harmonised with green infill. Flying House, composed of multipartite dynamic surfaces and terraces, sits on the site with its natural landscape using modern structural material combination yet defying the nature, structure- looks like a ‘landing of an airship that load nature.’ Primary supporting material is combination of wood and structural steel plates, wood have been used extensively in composite action with structural steel plate in structural designs. Roof spans of composite wood and structural steel ranges upto 30m clear to achieve
the required architectural profile and intent.
Vivek Garg, Managing Director, Global Engineering Services

The Learnings
The experience so far from all the projects including this one has been an exciting and challenging one since all projects are unique, both structurally and conceptually. The fact that enables, the design team to build these unique concepts in India, in a cost effective and aesthetically desirable manner has been the greatest reward so far.

Timeliness
Since the project is a private house the timeline has been much more flexible than some other projects that are far more market drive. Having said that the construction on site needed to be faster due to the tough site conditions as well as the due to the monsoon times since work almost comes to standstill again due to climatic conditions.

 

Fact File
Architect: SAV Architects
Structural Consultant : Global Engineering Services
Contractor: Duratech Construction

Adani Corporate House, Ahmedabad

Adani Group is coming up with its corporate office in Shantigram Ahmedabad. The entire project was sub-divided in North Wing, West Wing, South Wing and Auditorium. The entire development had two basements to cater for the parking requirements and to house the services. North and south wing consists of ground floor, 4 office floors to house various group companies, cafeteria is planned at the roof of north & south wing. West wing houses a stilt parking for executives, a triple height executive atrium, data centre floor, 7 office floors and Director’s floor at the top. On the East side, Auditorium is planned with executive dining on the roof of the Auditorium. Dedicated separate elevators and entrance are planned for the chairman.

Highpoint of the Structure
The major highlight of the structure is the Auditorium. As per the original design, the auditorium was planned as cantilevered structure supported on inclined shear walls on the fixed end. The approximate size of auditorium is around 32 m x 30 m, cantilevered trusses 10 m deep were proposed on the two edges anchored to the shear wall. Steel plate girders were planned to support the floor deck of the auditorium floor and supporting the floating columns to support the roof of the auditorium.
Subsequently, pair of tree columns were introduced to facilitate the speed of construction and to economise the structure. Main public drop-off for the office is below the auditorium. Auditorium structural system comprises of plate girders at the floor level and trusses at the roof level to support the executive dining area. Due to large spans structural steel became an obvious choice for the structural system.

Plate girders spanning from core to the arms of the tree columns formed the primary supporting system. Secondary beams spanned between girders to support the auditorium floor and raking slab. Trusses were fabricated using B/up box sections. The depth of the truss is approximately 4.5 m plate girders spanned between the trusses. Secondary beams spanning between plate girders were provided to support the deck slab construction.

The other interesting aspects of the structure are the four-floor high Public atrium spanning 30 m, and triple height Executive atrium spanning 16m which supports a heavily loaded Data centre above it. In the public atrium area, architects wanted large column free span. However, some utilities had to be housed over the atrium at fourth floor. To support the large column free are deep girders spanning 30m were proposed and the fourth floor was suspended from these girders. For the executive atrium area, between to support heavy loads because data centre and large spans steel construction was proposed.

 

The major highlight of the structure is the Auditorium. As per the original design, it was planned as cantilevered structure supported on inclined shear walls on the fixed end. The approximate size of auditorium is around 32 m x 30 m. Cantilevered trusses 10 m deep were proposed on the two edges anchored to the shear wall. Steel plate girders were planned to support the floor deck of the Auditorium floor and also supporting the floating columns to support the roof of Auditorium. Subsequently, pair of tree columns were introduced to facilitate the speed of construction and to economise the structure. Main public drop-off for the office is below the Auditorium. Its structural system comprises of plate girders at the floor level and trusses at the roof level to support the executive dining area. Due to large spans, structural steel became an obvious choice for the structural system.
Manish Negandi, Sr GM, Sterling Engineering Consultancy Services Pvt. Ltd.

Flooring System
The flooring system for the basements was flat slab system with drop panels. In the extended podium area, at ground floor, conventional beam slab system was proposed to take care of landscape loading and for fire tender movement. For the office wings (north and south) conventional flat slab with drop panels are proposed to maximise the clear height of structure. The roof of north and south wing supports cafeteria structure on the fifth floor. The roof of the cafeteria is supported on space structures and supported on four tree columns.

West Wing being the tallest, it has been separated by expansion joint along the perimeter where it meets north and south wing. In the west wing, large column free spans were required because triple height executive atrium from first floor to fourth floor. Data centre for the group was proposed to be housed at the 4th floor. To support large spans, heavy loads and expedite the speed for of construction, steel beams along with deck slab construction was proposed. This enabled site team to ensure that construction of the floor was completed without resorting to triple height staging and avoid substantial back propping requirements. The flooring system for the office floors in the west wing is post-tensioned flat slab with drop panels. This was the most economical solution for large spans. Top floor houses the chairman’s floor.

Comparative Analysis
In order to optimize the material consumption, sample analysis and design exercises shall be undertaken with different combinations of member sizes for which the required reinforcement and formwork will be estimated. Results of these exercises were considered in arriving at the structural scheme of the building. Based on the studies, it was decided to adopt conventional RC flat slab with drop panels for the north and south wings. For the West Wing Post Tensioned Flat Slab with Drop Panels was finalised.

Grand Atrium
Architects desired for a grand atrium in the public area. This atrium was four floors high and was spanning 30 m. Various alternatives were discussed and debated; conventionally a large depth girder at fourth floor spanning 30 m would have been provided. SEC suggested to have girders at the Fifth floor and suspend the fourth-floor slab in order to have a sleek floor in the roof of the atrium and to utilize the higher headroom at the fifth floor. This also helped in avoiding the loss of areas at the fourth floor on account of the huge depth of girders. It was finally decided to proceed with option 1 for the Public atrium area to expedite the speed of construction and avoid multi-level staging and heavy back propping requirements.

Cost Optimization
SEC proposed to introduce tree columns at the edge of the auditorium to reduce the cost of construction for this area and also to have a simple methodology for erection. This resulted in change in anatomy from cantilever truss to simply supported truss thus reducing the tonnage of structural steel. It also eliminated the need of huge shear walls required in the earlier scheme to transfer the load safely on the main building and to ensure that the serviciability criterias are well within the permissible limits. The extent of savings is as depicted below:

In the west wing, data centre was placed above the triple height executive atrium. Initial scheme proposed for this area was post tensioned flat slab along with drop panels. During the execution stage, the locations of columns were modified to have large central span for the atrium. This resulted in revising the scheme to steel beam deck sheet construction. The time required for the construction using Steel beams was reduced considerably and requirement of back-propping of the slab till the basement level was completely eleiminated. SEC presented the incremental cost analysis for the clients to enable them to arrive at the decision.

On-time
This project was planned to start within short time span from the concept design. Hence, the schematic stage and tendering stage was completed within two months since conception. Additional efforts were taken by the design team keeping in mind the fast track construction schedule..The work on site commenced within six months from the conception. Continuous co-ordination with the design team and site team ensured smooth execution.Continuous co-ordination with fabricators ensured that minimum time was lost and the fabrication commenced parallely.

L&T BUSINESS PARK, MUMBAI

L&T Realty, the real-estate development arm of Larsen & Toubro has a presence in Mumbai, Bengaluru and Hyderabad. Its international presence includes sales and marketing representatives in Singapore, Dubai, UK and the USA. Apart from developing L&T-owned land banks, the Company has entered into joint ventures and development agreements for some of its projects.

In partnership with government authorities, it is developing Transit Oriented Developments (TODs) at Navi Mumbai and Hyderabad. The Company’s current portfolio totals over 59 million sq. ft. across residential, commercial, mixed-use developments and TOD’s – one of the largest and the most diversified product offerings amongst the real estate entities in the country. In the short span of 5 years, L&T Realty has attained the position of market leader in the industry. This is affirmed by the fact that it has close to 50 per cent of the market share (in terms of sales) in the micro-markets in which it has a presence.

Answering With Steel
L&T designed & constructed a composite building – L&T Business Park – in Powai. With this project, it appears that structural steel is the winner & principally it makes lot of sense to maximize the usage of structural steel in future buildings.

In addition, it should be noted that the dominance of steel in the multi-storeyed building is based on tangible client-related benefits including the ability to provide column free floor spans, efficient circulation space, integration of building services, and the influence of the site and local access conditions on the construction process. For crowded city projects, speed of construction and minimum storage of materials on-site require a high level of pre-fabrication, which steel-framed systems can provide.

There is a strong demand for high quality office space. Corporate headquarters for banks and other high-profile companies require that buildings are built to high construction and environmental standards. Investment ‘value’ is the main criterion for choice of the building architecture, form and servicing strategy.

 

I joined L&T in September 2010 as project manager engineering and this was my first project. I was very fortunate to get an opportunity to work on this project, keeping in view the ahead of time technology (composite in 2007-08) was used by L&T in commercial building. The true success of this project is in the state-of-the-art composite design facilitating large column free spaces along with the optimized floor to floor height, optimized façade system, bridge connecting both the wings and a helipad at the top. The quality of work during the construction and the safety standards followed were typically in line with what L&T is known for.
SUNIL GODBOLE, Senior DGM, Structural Engineering, L&T Realty

Built to Suit Requirement
L&T Business park was designed and constructed in 2008-2010 as a composite building. During those days, Mr. Sunil Godbole was working with L&T as Project Manager Engineering. The first customer for this building was J P Morgan Chase (JPMC) – one of the leading banks across the globe and Sunil had an important role to play. Not only he helped and supported JPMC to understand this building in detail, but, also checked that the design modifications which were brought in by JPMC are feasible or otherwise.

On top of this, it was L&T’s responsibility to hand over the JPMC premises within the aggressive timelines after the completion of the modification work. In short, it was a challenging work where the already constructed building was converted into a kind of built-to-suit for JPMC. There were many modifications suggested by JPMC and L&T, was successful in implementing most of them which were necessary for the operations of JPMC. Generally, it is perceived that it is difficult to carry out modifications in a structural steel building, however, L&T with their innovative design team – managed to incorporate most of the modifications which were desired by JPMC, without affecting the safety & stability of the building.

Steely Connect
L&T Business Park houses two towers – Tower A and Tower B which are designed and constructed as G+10 composite steel buildings with two basements which are constructed with conventional RCC elements. The total built up area of L&T Business Park is 8 lakh sq. ft. Tower A and Tower B are connected on sixth floor with a structural steel bridge. Both the wings are identical with a central core of RCC shear walls and approximately 13m column free span.

A wing also consists of a helipad on the terrace which also has been designed and constructed using structural steel. The structural system consists of composite columns, vermiculated steel beams with composite deck slab with shear connectors.

Speedy Solution
Initially this building was designed as RCC building, however, the anticipated completion date was not in line with the L&T business plans. Therefore, the building design was changed to composite design when the basement work was in progress.

This generated great amount of pressure on the designers however, the designers ensured that the designs and drawings are made available to project team well in advance and that too after checking the material availability in the market. Here, we need to remember that we are in 2007-2008 when the structural steel commercial buildings were at very nascent stage in India.

The salient features of this project are:

  • Large column-free spaces
  • Excellent head rooms
  • Composite helipad
  • Connecting steel bridge
  • Optimized façade
  • 32,000 sq. ft. of cafeteria etc.

Against All Odds
Structurally this project is extremely unique keeping in view the usage of composite technology when the entire construction world in India believed that the concrete is the answer to all the questions however, we observed that the speed, quality and cost (considering the time value of money) was much better than the conventional RCC building.

In many large commercial buildings, a two-stage construction process means that the tenant is responsible for the servicing and fit-out, and so the building structure has to be sufficiently flexible to cope with these differing requirements. Many smaller buildings are designed for natural ventilation and with a high proportion of renewable energy technologies built into them. Many solutions are possible using steel construction.

Composed Proposition
The commercial sector demands buildings that are rapid to construct, of high quality, flexible and adaptable in application, and energy efficient in use. Steel, and in particular, composite construction has achieved over 70 per cent market share in this sector in the western world where the benefits of long spans: speed of construction; service integration; improved quality; and reduced environmental impact are widely recognised.

The overall building economics are fundamental on the rationale for using steel construction in the commercial building sector, where the market share for steel in western countries has been consistently 65 to 70 per cent for the last 20 years.

Recent cost comparison studies show that the building superstructure generally accounts for only 10 to 15 per cent of the total building cost and that the influence of the choice of structure on the foundations, services and cladding costs is often more significant. For example, a reduction of 100 mm in the ceiling to floor zone can lead to a 2.5 per cent saving in cladding cost (equivalent to 0.5 per cent saving in overall building cost).

Therefore, best practice building design requires a synthesis of architectural, structural, services, logistics and constructional issues. Where this synthesis has been achieved, long-span steel systems with provision for service integration dominate commercial building design.

Changing the Face of Indian Infrastructure

The metro rail network in India is on an upward swing; with the mass rapid transit system emerging as one of the best solutions for urban transportation. Metro is not only a commuter’s delight, but, has raised the bar in design and architecture for public transportation; resulting in modern infrastructure. Tata BlueScope Steel Limited (TBSL) has supplied more than 1600 MT of colour coated steel in form of roofing and building products for majority metro projects in the country.

Innovative Evolution
LYSAGHT® – a leading brand of TBSL – has constantly evolved with some of the most innovative profiles, to address the design challenges ensuring quality performance to offer customised products and solutions. Team LYSAGHT® has executed more than 3 lakh square meter of roofing for prominent metro projects across the country. The brand’s profiles like KLIPLOK® 700 and TRIMDEK® 1015 are installed at prominent projects such as DMRC, Chennai Metro, Hyderabad Metro, Kochi Metro, and Bangalore Metro to name a few. With its expanse of projects implemented; LYSAGHT® has established itself as a preferred choice for roofing applications in this segment.

Flooding Eastern Railway Stations
TRIMDEK® 1015 roofing sheets have been installed at over 120 stations, in the eastern part of our country alone. Design requirements such as curved roofs; convex or concave, could be achieved easily with LYSAGHT TRIMDEK® 1015’s crimp curved sheets that ensure strength with aesthetics. This modern ribbed roof and wall cladding profile with subtle fluting in the pans, provides strength and long spanning capabilities. The brand is proudly associated with the Indian Railways since 2008 and has supplied more than 4 lakhs sq.mt. roofing till date.

Harnessing Mumbai’s Mono & Metro Rail
LYSAGHT® brand was an obvious choice for the supply of roofing and decking profiles for Mumbai Monorail Project. The project has been successfully completed with LYSAGHT KLIPLOK® 770, a concealed fixed roofing system and LYSAGHT SMARTDEK® 51, an innovative and precision engineered decking system. LYSAGHT® range of products were chosen due to their high durability, aesthetics and cost effectiveness. The profiles are also compatible with specially designed clamps that help solar panels mounting easy on roof tops. To harness the benefits of solar energy, Mumbai Metro has planned to install solar panels on Versova-Andheri-Ghatkopar metro corridor and have already installed panels at its Andheri WEH Metro station.

Speedy & Effective Solution
For Kolkata Metro too, LYSAGHT® supplied KLIPLOK® 700 for 24000 sq. mts. of roofing. The uniqueness of this project lies in LYSAGHT®’s onsite crimping facility that not only ensured faster project completion with immediate installation and cost-effective solution, but, also abstained profiles from damage or stress cracks.

While LYSAGHT® profiles cater to varied segments, and offer cost efficiency (due to optimised steel solutions), shorter lead time, high strength (with design flexibility), superior quality paint and coating system (with long lasting aesthetics) – the brand promotes Best Safety Practices in construction and manufacturing. Metro station usually involves working at heights and on curved structures. Tata BlueScope Steel’s safety standards and ‘ZERO Harm’ policy guarantees completion of work with utmost safety.

Weathering the Storm
The need for best quality material with adequate strength to endure high levels of stress and strain in case of contingencies like heavy rains, high uplift wind load and vibrational loads etc. are primary requirements of any Infrastructure project. LYSAGHT® profiles are made from high strength, corrosion resistant and tried and tested raw materials such as COLORBOND® steel and ZINCALUME® steel, are especially crafted for harsh weather conditions. Also, a public utility space must ensure architectural appeal as it becomes the landmark of the city. Performance with aesthetics is what COLORBOND® steel offers where a monotonous structure transforms into an architecturally appealing piece of work.

After using galvanised steel for the first three stations, DMRC opted for Zinc and Aluminium alloy based COLORBOND® steel, solely on the merit of its benefits. COLORBOND® steel in colours Surfmist, Pale Eucalypt, Sky Blue and Torres Blue were used to suit the specific ambient requirements of each station was used. The superior coating of Zinc Aluminium alloy and an efficient paint system ensures colour durability and long life. This was the first instance where the common man in India witnessed colourful steel roofing being used for an infrastructure project like Railways System.

COLORBOND® steel with its 100-per cent lead free paint technology is environment friendly compared to other construction materials. COLORBOND® comes with THERMATECH™ Solar Reflectance Technology that ensures lower temperature by absorbing less heat from the sun, making it thermally efficient, ideal for infrastructure projects.

Over the years, Tata BlueScope Steel through its offerings has created hallmark projects in the segment, with its unmatched technical expertise, wide range of superior architectural solutions, extensive research and service excellence. While India is well on its way to create a world-class MRT system as an integral part of community infrastructure development in the country, Tata BlueScope Steel is fully committed to enable this transformation.

Sports Centre & Cricket Stadium, NCR

The existing stadiums are non-functional and do not adhere to the changing trends and requirements. A futuristic design has to be multifunctional and in competence with latest trends and technology. Hence, this stadium will cater to multiple tasks. This will not be like any traditional cricket stadium, but, is designed to hold other leisure activities such as – football matches, concerts, banquet and hospitality.

Thoughtful Design
The design is executed keeping in mind the security constraints and disaster management. As this would be an eye-catching tourist and recreational hub, the planning ensures that the complex is safe from high-security risks such as terrorism. V.I.P. boxes in all stands make the complex functional in all weather conditions and can be used to hold video conferences and private parties. This is not just a sports centre but a hospitality and entertainment hub which would change the scenario of stadium architecture in the country’.

Client’s Supposition
When you start with a new project and a new client, there are different set of expectations, requirements, and desires of the client. With this particular stadium, the brief was to design a state-of-the-art stadium in NCR, which meets international standards, grandeur in scale and appeal in design with emphasis on safety and security of the visitors and the players. The requirements were similar to any other stadium/sports complex, viz., Stadium with a holding capacity of 50,000 people, club, guest house and sports academy, etc., with emphasis on safety and security of the visitors and the players. However, the question was how an Architect could make it different from already built premises of similar use.

 

Every new project possesses its own set of challenges and problems. The key is to tackle and provide efficient design solutions while creating a unique and out of the box establishment, in context with site and surroundings and in competence with the latest trends and technology. Having 50 years of experience and expertise in the field and having done so many first’s in the country, viz. India’s first revolving restaurant at Ambassador Hotel in Mumbai, India’s first health spa and resort, Golden Palm Resorts at Bangalore, India’s first platinum rated Green campus, Cygnus World School in Vadodara; to name a few. This stadium will not only be used for cricket, but, for football as well and hence, this will be the first-of-its-kind Sports Stadium Cum Entertainment Complex in the country.

PREM NATH, Principal Architect, Prem Nath & Associates

Architect’s Delineation
The idea was to make an ‘iconic and flexible’ design with use of latest construction technology, and emphasis laid on the security and safety of the structure. As this is a public building, where the visitor profile will include bureaucrats, celebrities, players and local public, and international visitors, therefore, the design had to be conceptualized keeping in mind that no security issues arise. The circulation patterns should be such that there are minimum chances of any sort of chaos in the times of higher footfall.

Sports-cum-Entertainment
To add elegance to design steelwork and cable support system could be incorporated which will add a dramatic quotient to the stadium roof and gives a modern form to the building. Instead of making it just a cricket stadium, the idea was to make it an entertainment centre, because it was realised that the stadiums hold matches for a specific time of the year and other than those days the space should be utilised for other entertainment purposes.

Another focus was on the spectator area, it is observed that in 90 per cent of the stadiums, the spectators can’t see the foresight boundary line, while planning this stadium it will be ensured that the view from the spectator stands will be maximized and the boundary line would be visible from their place of sitting.

Steel-in-Vogue
Steel is one of the most flexible yet very sturdy materials available to us. It is by far used for every type of construction activity since centuries now. With the currently available techniques and technology, steel is evolved from a mere use of it as reinforcement – today steel structures have got in vogue and the design ideas are limitless with steel.

In this project, majority of the stadium’s structure shall be built with steel components – apart from the base RCC structure, the entire peripheral curvilinear ‘façade to roof’ structure shall be built in steel which shall itself be the major component of steel applicability; other ancillary structures too shall be built with steel keeping in mind the flexibility of use, ease of constructions and achievable speed in development; Steel not only gives me opportunity to design big, design freely but also enables me to think variety of forms and shapes.

Speaking Volumes
The entire project planning has been done within an area of approx. 32.6 acres; the project speaks of various structures, viz. stadium, club, guest house, utility and ancillary block, sports academy, etc. The stadium is planned for a capacity of 50,000 viewers, the stadium is distributed in four major stands, i.e. north, east, and west and south.

The stadium stands areas consist of viewers’ seating, viewers’ VIP boxes, team areas, administrative areas, security areas, media rooms, lobbies, food courts, washroom and other amenities.

The open area within the stadium is spread over 15,000 sqm. i.e. as per ICC Standards. Recreation / club area of 7,000 sqm. spread over ground plus 3 floors shall consist of indoor sports, viz. gymnasium, aerobics, boxing ring, squash, table tennis, billiards, etc. plus refreshment areas and common amenities swimming pool is planned in this area, as part of outdoor sports facility with changing rooms and amenities within the club building.

Guest rooms totalling to 160 nos. are planned in a ground plus 9-storied annex with a total construction area of 16,500 sqm; this shall also include the common spaces, reception, lobby, dining facilities, etc.

Stadium Geometrics
The premises have been planned to contain an oval shaped stadium complex, along with recreational and hotel block. Once you approach the stadium, you enter huge piazza, the internal road takes you along the entire complex. The geometry of the stadium is designed keeping in mind the comfort of the spectators; the spectator area is maximized ensuring that the spectators can see the boundary line unlike any other stadiums.

The pitch being the main focal point is aligned keeping in mind the north and south stands. The south stand is usually reserved as the media stand. The roof profile ensures that the glare affecting the east and west stand is well treated and there is minimal disturbance or difficulty to the viewers. RCC is used for stadium stands and steel for the roof and outer shell of stadium. The atrium space is supported by external steel frame to cover the entire spectator area. Hence, the supporting steelwork needed to be precisely engineered and executed. The external steelwork provides stability to the structure.

There is a scope for approximately 14,000 tonnes of structural steel usage with use of fabricated box girders on outer skin of the stadium. Use of solar panels in the roof assembly to add to the aesthetics and take advantage of sun’s energy. A state-of-the-art technology is used for the system of sports lighting and public address. Tower lights and track lights on the periphery ensures 1000 lux level required for a comfortable viewing and media coverage. Ventilation of the building is ensured by incorporating Louvers and perforated metal screens in the outer skin, which helps the building breath in and out.

Designing Techniques
As the Architect keeps travelling to various sites, meetings and seminars – but that does not stop him from designing, the conceptualization of any design begins with a sketch, which he usually prefers to make on the phone and share the same through mails with his team. By the time, he reaches office his expert staff presents him with the accurate vision of the sketch and they sit further to detail it, which is usually done on AutoCAD for 2-D interface and Revit architecture for modelling and adobe photoshop for presentation purposes and STAAD for structure.

Distinctive Experience
Each project brings with it different experience from dealing with the client to working out the entire design process. When it comes to a stadium, one thing that is different from other building typologies is that there are more people visualising and watching it on a television screen. The whole visual showing the exteriors of the stadium through a drone had to be dramatic. Therefore, the birds-eye view of the stadium is of utmost importance. It had to be treated in a way that it leaves an impact over the viewer, and obviously the design had to meet international standards.

There are already well-set examples of stadium architecture all over, so making something out of the box and something in competence with the already existing structures was the main challenge. For this particular project, Prem Nath And Associates chose to use steel to give it a flexible and a dynamic profile. This is one of the first projects where they experimented with steel as the main construction material, apart from being used it the frame work and structural system, steel here is widely used as an aesthetic component. The outer shell and roof enhances the entire look and feel of the complex, and gives the stadium a magnificent appeal.

The project is in its initial stages of finalisation and approvals and expected to take a period of 36 months of execution.

 

Fact File

Architect: Prem Nath and Associates
Structural Consultants: SACPL
Steel Tonnage: 14,000 tonnes approx.
Seating Capacity: 50,000
Current Status: Design Development