Curtain wall

primary knowledge about curtain wall... .

1. presentation REPORT….. ON … Zinnia Mahjabin ACR 054 05 617 Kamrul Hasan ARC 055 05 622 Curtain wall ……

2. 1.INTRODUCTION….. 2.TYPES 3.SYSTEMS 4.HISTORY 5.FUNCTIONS OF CURTAIN WALLS 6.CONSTRUCTION PROCESS 7.MARKET PRICE 8.MODULE 9.BUILDING ANALYSIS (survey ) 10.LABOUR INTERVEW Curtain wall

3. 1.INTRODUCTION…..

4. What are curtain walls ? *The name “curtain wall” devices from the idea that the wall is thin and “hangs” like a curtain on the structural frame . *a wall that encloses the space within a building but does not support the roof, typically on a modern high-rise. *Lightweight wall systems installed outside of building structure. Wikipedia

5. 2.TYPES

6. Types of curtain walls ………… *Strong back *Truss systems *Cable truss *Grid shells *Cable net *Glass fins * Spider cut system Reference : VENTANA

7. Strong back system 1.The structural systems are built up from structural Sections capable of accommodating the required span. 2.These systems can include both vertical and horizontal structural components. 3.Conversely, an interesting variation of this system type eliminates the vertical mullion, with horizontal components suspended from overhead cables and fixed to anchoring building structure at their ends. Truss system Truss systems employ a planar truss design, often in a hierarchical system that may combine other element types including tension components .

8. Grid shells 1.Configurations can be vaulted, domed and double- curved. 2.Systems can be welded, bolt-up or some combination of each. 3.Grid shell structures with integrated cable bracing can produce a highly efficient structure with a refined aesthetic. Cable truss 1.While cable trusses can vary widely in both truss design and configuration with vertical, overhead, vaulted and Domed forms easily achieved. 2.The trusses themselves are most often characterized by spreader strut elements representing the only compression member in the structural system.

9. Glass fins Glass fin-supported facades still represent one of the most transparent forms of structural glass facades and an economical solution (especially at lower spans). Cable net 1.Cable nets represents the ultimate in elegant minimalist structural systems and can provide optimum transparency when the effect of a sheer glass membrane is desired. 2. The glass is supported by a net geometry of pre- tensioned cables.

10. 3.SYSTEMS

11. http:// www.ehow.com There are a wide range of possible infill panels for curtain wall systems, including : Vision glass (which may be double or triple glazed, may include low-e coatings, reflective coatings and so on ). * Spandrel (non-vision) glass . *Aluminum or other metals . *Stone veneer . *Fiber-reinforced plastic (FRP ). *Louvers or vents . * Transom *Anchor

12. Stick systems Curtain walls can be defined as non-structural aluminum-framed walls, containing in fills of glass, thin stone, or metal panels that are connected back to the building structure. Systems Unitized systems 1.These completed units are hung on the building structure to form the building enclosure. 2.Unitized curtain wall has the advantages of: speed; lower field installation costs; and quality control within an interior climate controlled environment. http:// www.ehow.com

13. Rain-screen principle 1.A common feature in curtain wall technology, the  rain screen  principle theorizes that equilibrium of air pressure between the outside and inside of the "rain screen" prevents water penetration into the building itself. Ladder Systems Very similar to a Stick system a ladder system has mullions which can be split and then either clipped, or screwed together consisting of a half box and plate, this allows sections of curtain wall to be fabricated in shop effectively reducing the time spent installing the system on site . . http:// www.wheatonsprague.com

14. 4.HISTORY

15. History   * Aluminum framed wall systems date back to the 1930's, and developed rapidly after World War II when the supply of aluminum became available for non-military use . *Compared with these early European buildings, the 1 st American examples of curtain wall. *This protective wall was often called a stockade or a curtain wall and these walls ranged from 6 -20mm in thickness and were built up to 45 feet high. http:// www.arct.cam.ac.uk

16. 5.FUNCTIONS OF CURTAIN WALLS

17. Functions of Curtain Walls Elimination of Water Penetration Water penetration is the fundamental function of a facade . Hence two stages of prevention are placed. Primary level where complete defense of water is conducted and if that fails a secondary level where a direction to let percolated water to drained out has to be provided . Air impermeability This function is more of an environment concern to reduce the emission of carbon dioxide due to rate of heat loss or gain within the external and internal environment . http:// www.ehow.com

18. Resistance to wind, thermal and acoustic action Wind actions are transferred by the cladding system to the building floors which act as a linear support. Each floor level therefore supports one level of wind load on a building. Massive structural elements possess higher acoustic insulation like masonry or concrete structures . Solar levels This can be reduced by providing a selective solar control coating on one of the surfaces of the glass. For example, spaces for exhibitions or displays of materials can undergo degradation due to ultraviolet radiation. For this a UV-inhibiting film can be applied to the surface of glazing.  

19. 6.CONSTRUCTION PROCESS

20. Video

21. 7.MARKET PRICE

22. Sharkar enterprise lt.d curtain wall smart laminated glass , pdlc switchable glass  = 120/- sq.ft 8mm Silkscreen Printing Tempered Glass for Glass  = 300/- sq.ft Jin Yao dark blue reflective glass curtain wall, high  =180/- sq.ft 6-8mm glass Tempered Insulated Glass Panel = 160/- sq.ft 8-10mm glass Tempered Insulated Glass Panel  = 260/- sq. ft 100% Hot Sale Customized  Curtain   Wall Glass = 450/- sq.ft clear insulated hollow or double glazing  glass  for  curtain   wall= 120-130 sq.ft GM Hidden Frame  Curtain   Wall   Glass= 270/- sq.ft Stainless Steel Glass  Curtain   Wall  Spider/suction cup  = 260/- Glass

23. http:// www.wheatonsprague.com Aluminum exposed  farming  glass  curtain   wall =200-300/-

24. 8.Module

25. http:// www.wheatonsprague.com SIZE

26. 9.BUILDING ANALYSIS ( survey )

27. 10.LABOUR INTERVEW

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