72 Screens – Perforated Screens
Designed by mumbai-based firm – Sanjay Puri Architects, 72 Screens designed in response to the climate of the city with extreme summers of 45⁰C average temperatures, this 6 level office building is sheathed in folded triangular GRC screens creating an energy efficient building while forming a sculptural presence.
The City of Jaipur in India has a desert climate with average temperatures ranging from 30 to 50˚C through most of the year. The building is designed in response to the excessive heat. Located in an area of Jaipur having problems with traffic congestion, it was also necessary to have a product which could be installed quickly, and with a finish requiring minimum maintenance. After considering a lot of options, the architects of the project chose Cem-FIL™ GRC. The idea of a 3D elevation was the inspiration of the principal architect of the project, Mr. Sanjay Puri, a strong believer in GRC.
Perforated Screens by Cem-FIL®:
Cem-FIL® 60 is a high integrity AR glass fibre chopped strand designed for premixing with other materials and the resulting mix is formed by vibration casting or other processes into molded GRC components. It can also be used as a component of repair mortars to enhance their performance.
The primary structure of the building is reinforced concrete. As the elevation was designed with a 3D effect, wherein the GRC panels were protruding out from the finished vertical surface of the reinforced concrete structure as much as 2m, it was decided that an additional auxiliary tubular steel structure should be supported on the primary reinforced concrete frame, and GRC panels would then be anchored to the steel structure.
The square panels were cast using a mix of grey cement, sand and Cem-FIL™ Alkali resistant glass fibres. The process employed for the casting was both Premix as well as Sprayed GRC. The fixing system of dowels and brackets was used at some places to enable the protrusion of the facade panels. The majority of the panels were produced with a size of 1m X 1m, and a thickness of 40 mm. The panels were cast in FRP moulds, and had no additional surface coating or treatment.
Due to the light weight of the panels installation was fast and made without the need for heavy lifting equipment. The panels could be erected onto the tubular structure using only a chain pulley, and in total approximately 50 people were employed to both manufacture and install the panels.
Sanjay Puri Architects:
Enveloped in abstractly folded planes of perforated screens, this 6 level office building creates a sculptural presence.
Located in the city of Jaipur in India which has a desert climate with average temperatures ranging from 300C to 500C through most of the year. The building is designed in response to the excessive heat imbibing traditional elements.
On a small plot of 1075 sq m, the building envelope is restricted on all sides in plan as well as governed by height restrictions, The resultant floor area on each level after leaving mandatory open spaces is only 326 sq m.
The entire service core and toilets are located on its southern side thus effectively reducing the heat gain substantially in a location where the sun is in the Southern hemisphere throughout the year.
In addition a glass reinforced concrete screen that takes its inspiration from the old traditional ‘jali’ screens of the architectural heritage of the region sheaths the building on all sides further reducing the heat gain and rendering the building very energy efficient.
Designed as a corporate office headquarters, the ground level houses a reception and conference rooms above a car parking basement with office areas at the above 5 levels.
The concrete screens around the building are supported by a steel framework with projections that vary from 0.9 to 1.5m. This creates an external periphery space for plants at each level that will act as further insulation from the external heat creating cooler office spaces within.
The office building thus overcomes the restrictions of its small plot creating office spaces that are very energy efficient to combat the excessive summers of its location while imbibing tradition in an abstract manifestation to create a sculptural quality for its inhabitants.
Project name: 72 Screens
Location: SB-187, Opp Rajasthan University, J L N Marg, Jaipur 305 020, Rajasthan, India
Coordinates: 26.888622, 75.813065
Type: Office Building
Materials: AR Glass Fiber – Cem-FIL™ 61 roving + 60 Ch.Strands
Project Area: 326 sqm
Site Area: 1,075 sqm
Completion Year: 2013
Client / Owner / Developer: Shree Cement Ltd.
Architects: Sanjay Puri Architects – 20 Famous Studio Lane, Off. Dr. E.Moses Road. Mahalaxmi, Mumbai – 400011, India
Environmental Engineer: P.S. Designs
Structural Engineer: Ascent engineers Ltd.
Text Description: © Courtesy of Sanjay Puri Architects, ocvreinforcements, cem-fil
Images: © Sanjay Puri Architects