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RETRACTABLE STRUCTURES
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- 2. RETRACTABLE SYSTEMS RETRACTABLE means somethingwhich is movable or sliding . Something which can be pulled backwards and inwards. RETRACTABLE ROOF OVER POOL RETRACTABLE SEATING RETRACTABLE WALLS RETRACTABLE RESTAURANT ROOF APPLICATIONS: mostly used at places where we wish to provide an open air experience at the push of a Button. Like residences, pools, stadiums etc.
- 3. RETRACTABLE SYSTEMS IN RESIDENCES•Creates desirable outdoor •used to cover patios, swimming pools, decks •protect from direct sunlight entering the house •open up for max. Fresh air, circulation and unmatched views •material used is aluminum which is light weight, strong, and non-corrosive. •polycarbonates sheets, •tempered glass •Silent motors •rain sensor, wind sensor and timer.
- 4. RETRACTABLE SYSTEMS INSTADIUMS RETRACTABLE FEILD The retractable field is also known as a mobile pitch and movable grass pitch. The introduction of a sliding pitch to the stadium design is a key element in accommodating both sports within the venue. • When the pitch is rolled outside, a clean, flat surface is exposed, which can be utilized for trade shows, motor sporting events, concerts etc. . • Turning a sports stadium into an event center can involve a long, complex process of removing pieces of a playing field or covering up the field entirely. A retractable field not only stores the field in an ideal location, but turns a lengthy process into a simple and cost-effective automated motion.
- 5. RETRACTABLE SYSTEMS INSTADIUMS A natural grass playing field requires high-energy light and water to grow attractively. An indoor, closed- atmosphere stadium can certainly house a natural field, but the benefits of an outdoor atmosphere are still unbeatable. With the capability to move an entire field outside, a facility owner can take even greater pride in the look of the natural field.
- 6. RETRACTABLE SYSTEMS INSTADIUMS A natural grass playing field requires high-energy light and water to grow attractively. An indoor, closed- atmosphere stadium can certainly house a natural field, but the benefits of an outdoor atmosphere are still unbeatable. With the capability to move an entire field outside, a facility owner can take even greater pride in the look of the natural field.
- 7. RETRACTABLE SYSTEMS OFROOF Used in buildings •Residences •Sport stadiums •Restaurants •Swim centers In this method whole roof can be moved or drawn back within a short time. Roofing Materials of Retractable Roof Structures •Glass •Polycarbonate •Ethylene Tetrafluoroethylene (ETFE) •Photovoltaic SINGAPORE NATIONAL STADIUM
- 8. RETRACTABLE SYSTEMS OFROOF MERCEDES BENZE STADIUM (OPEN STATE) MERCEDES BENZE STADIUM (CLOSED STATE)
- 9. •Roof designed withtracks so as to convert any interior space into outdoor space. These roof can be used in residences , bars, swim centers, etc. to provide open air experience. •Some specifications such as flexibility, beautification, and authentication have made suitable this kind of construction for the wide span roof stadiums. According to this, the most important view point in these special projects is how to cover the wide span open roofs. Therefore, identification of structural systems used in these stadiums is important RETRACTABLE SYSTEMS OF ROOF
- 10. RETRACTABLE SYSTEMS OFROOF MERCEDES BENZE STADIUM (OPEN STATE)
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- 13. RETRACTABLE SYSTEMS OFROOF RAIL PREVENT FROM HANGING
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- 17. TYPES OF RETRACTABLEROOF •SLIDING AND OVER LAPING •FAN SHAPED •ACCORDION SKY DOME TORONTO SLIDING AND OVERLAPING Wimbledon Central Court ACCORDION MILLERS PARK FAN SHAPED BC PLACE CANADA, UMBRELLA Retractable roofs are normally composed of rigid, steel moving panels. Panels consist of large steel trusses and are powered by large, mechanical drive systems. Retractable roofs can move in a variety of directions, including vertical, horizontal, parallel, fan-shaped revolving and central revolving. There also different types of retractions, including overlapping, stacking and folding, and roofs can be divided into any number of sections.
- 18. SLIDING RETRACTABLE ROOF Theroof of the covered stadium is composed of two or more movable elements, which are moved horizontally in the transverse direction of the building. • Steel lattice of the movable roof structure slides along two main transverse beams by means of wheels and electric motors. With movement of the roof elements the entire playing field opens up, while stands remain under the fixed part of the roof. •The stadium or industrial buildings commonly use 2-D panels roofs composed of steel frames with a covering material as the structural system for their retractable roof. Atlanta Atlanta stadium (with 8-sided retractable roof)
- 19. OVERLAPPING RETRACTABLE ROOF Thestructure was designed to allow for large open concourses to increase fan comfort. Generally, roofs for stadiums and industrial buildings have some curvature, either arch like or dome shaped. • The roof has eight panels-two being fixed and six able to move. Each half of the roof can move independently and is cabledriven using gantry crane technology. • The six telescoping panels consist of trusses fitted with multiwheeled bogies at each end, and can be retracted in 4 1/2 minutes, revealing a 5.3-acre opening to the sky. • Each panel is supported by the panel beneath it and moves on a steel wheel guide roller arrangement. Bank One Ballpark, Phoenix, Arizona
- 20. OVERLAPPING RETRACTABLE ROOF Conceptual3D Form: The computer control system adjusts the roof opening in a fashion similar to that of a camera aperture for the angle of the sun, allowing the maximum amount of light on the field and the least on the seats to reduce heat gain. •The six, 800-ton panels are pulled by four miles of steel cable attached to two gear boxes and two 200 horsepower electric motors. •o reduce the weight of the roof and its effect on the drive mechanism, high-strength steel (65ksi) was used in the roof trusses. • This type of Panel systems are commonly used for large roof areas, typically in the range of 5,000 m2 to as much as 50,000 m2
- 21. FAN SHAPED RETRACTABLEROOF Miller Park in Milwaukee, Wisconsin, with its fan-shaped retraction and unique geometry, required a great deal of wind load studies. Roof also had to be designed with particular attention paid to snow loading and the various patterns it could take The total roof span is covered using 8 panels, where 2 panels are fixed on the either side and other 6 panels are movable or sliding. The steel panels rotate around a hinge located at the front of the stadium, behind home plate. The result is a dynamic, fan-shaped retraction that opens up from center field out until all panels are stacked above seating areas along the baselines. Miller Park, with a fan style roof
- 22. FAN SHAPED RETRACTABLEROOF WORKING-Common concept on which almost all retractable roof work Roofing Panels are adjusted over carriers (steel trusses) and these carriers roll over the steel rails which are powered by DC motors. Thrust releasing mechanism is integrated into retractable roof stadiums or we can say that it works on thrust releasing mechanism. Thrust is a force which drags the machine. The best example of thrust is the movement of aircraft. Minute
- 23. RETRACTABLE SEATING SYSTEMS Retractableseating systems are tiers of seating that fold away in to a space the depth of a single row. They are most commonly used in multipurpose spaces wheres eating is not always required, and can be designed to be stored in situ or in a separate location.
- 24. RETRACTABLE SEATING SYSTEMS •Seatframesare manufactured from steel, which is then galvanized or thermoplastic- coated to provide protection against corrosion and wear • To many existing venues are evolving into multipurpose environments. Its no longer financially viable for a venue to cater to one event type, and they must be to accommodate concerts, conventions and seminars, as well as different types of sporting events through out the year. MATERIALS USED:
- 25. SOME EXAMPLES ININDIA RETRACTABLE ROOFS USED IN INDIAN HOUSES
- 26. Why limited usein India? Retractable roof that can cover the stadium and protect it from rainfall so that precious time can be saved and along with it but.. • it is not economical. • there wont be any impact of Moisture and weather on the Pitch and henceforth impact of bowlers will be lost • Stadium is not always completely filled with a full crowd. CONCLUSION An entire playing field moved to enhance the utilization of a stadium as well as the life of the field itself. •Retractable roof system are very useful in maintaining comfortable temperature in buildings. •A retractable roof system protects outdoor areas and help the owners to enjoy the outdoors all year without worrying about the weather
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