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Precast Concrete Panels And Stone Veneer Panels STERLIN ADAMES AND SEAN MERCADO Slide 2 Slide 3 GRACE BUILDING SKYSCRAPPER - 630 Ft. YEAR BUILT 1971 to 1974 50 STORY BUILDING CONSISTS OF OFFICE 1,557 & RETAIL 20 DISTINCTIVE FEAUTURE: CURVED TOWER WALL THAT ARE SET BACK TO PROVIDE AN ATTRACTIVE AND ACCESIBLE SPACE THE WALL IS MADE OF TINTED GLASS WINDOW AND WHITE TRAVERTINE LIMESTONE STONE PANEL CLADDING CONNECTION SIBLING OF SOLOW BUILDING FAADE - DESIGNED BY GORDON BUNSHAF Slide 4 W.R. GRACE BUILDING TRAVERTINE, A FORM OF LIMESTONE, IS USED FOR THE GRID PATTERN THAT COVERS THE SPACE BETWEEN WINDOWS IN THE GRACE BUILDING TRAVERTINE IS A TERRESTIAL SEDIMENTARY ROCK. COMMONLY USED FOR FAADE, WALL CLADDING, BACKSPLASH AND FLOORING. THE USE OF TRAVERTINE MAKES THE GRACE BUILDING APPEAR MORE BRIGHTER THAN ITS SURROUNDING AND THE WHITE COLOR CONTRAST THE DARK WINDOWS TRAVERTINE MARBLETRAVERTINE STONE Slide 5 STONE LITE PANELS OFFERS STRUCTURAL SUPERIORITY, ITS NATURAL, TEXTURES, COLORS, FLEXIBLE SIZES SHAPE & DESIGN, ELEGANT FINISH AND ARE GOOD FOR INCORPORATING IN CURTAINWALL RAIN SCREENS, CORNICE, BALCONIES, CANTALIEVER STRUCTURES, LARGE FREE SPAN CEILINGS, CURVE STRUCTURE AND MORE. Slide 6 STONE WALL PANEL CONNECTION DETAIL EXTERIOR WALL Slide 7 STONE PANEL CLADDING INTERLOCKING JOINT CHANNEL DETAIL CONNECTION IN BETWEEN TWO PANELS Slide 8 STONE PANEL CLADDING DETAIL AT BASE Slide 9 STONE VENEER INSTALLATION WALL DETAIL Slide 10 AIR BARRIER SEALANTS, RAIN PENETRATION AND MOISTURE CONTROL STONE VENEER/PANELS ARE STRONG AND DURABLE BUT THEIR WEAK POINT ARE THE JOINTS IT NEEDS TO BE SEALED SO THAT WHEN WATER WONT SIP THROUGH OR THE WATER CANNOT DAMAGE IT Use appropriate sealant for the environment in which it is expected to perform. Consider the environment that it will perform. Failure to consider these factors may result in adhesive failure, cohesive failure, craze cracking, hardening, disintegration, color changes, or other types of permanent failure. Each project requires its own careful sealant consideration and application. Work cited - http://stonepanels.com Slide 11 Air Barriers & Sealants Precast Concrete Panels Air Barriers & Sealants Slide 12 Precast Concrete Panel - One-Stage Joints A two-stage joint in a precast panel. The outer rain seal serves to control water leakage due to kinetic energy. Any rainwater that does penetrate the rain barrier drains to the outside, before it is able to reach the air seal. Precast Concrete Panel - Two-Stage Joints A one-stage joint in a precast panel wall system. In the so- called face seal approach, a single line of defense is employed against both rain penetration and air leakage. Slide 13 Attachment Systems & Fire Safety Precast Concrete Panels Attachment Systems & Fire Safety Rebar and Grout U sed typically with slabs, reinforcing bars are spliced into slabs and grouted in place Weld Plates T he most common method of attachment of precast members is by use of steel weld plates. Typically, the precast members have embedded plates that can be used as welding surfaces for loose connecting plates or angles. Slide 14 Case Study: Precast Concrete Panels Case Study: Jubilee Church The church has three curved walls resembling of a ship's sails, as it symbolizes "the ship in which the people of God sails." The church has large glass surfaces that guarantee a generous flow of natural light, located both at the top and at the main and back facades. In order to preserve the whiteness of the building, the company Italcementi developed a new cement containing titanium dioxide, called TX Millennium, which ensures the whiteness of the concrete, despite the pollution, rain and weather effects. TX Millennium cement is formulated with photo-catalytic properties to deliver self- cleaning power. As a result, organic pollutants that settle on the surface of the concrete are decomposed into oxygen, water, and carbon dioxide. Architect: Richard Meier & Partners Design Team: Richard Meier, FAIA, John Eisler, Matteo Pericoli, Alfonso DOnofrio Slide 15 Case Study: Precast Concrete Panels Case Study: Jubilee Church The outer sail is composed of 78 segments, the intermediate of 104 and the inner, which reaches 26 meters, of 176 segments. The builder had to invent a mechanism to manipulate the pieces and put them in place. Slide 16 Case Study: Precast Concrete Panels Case Study: Beinecke Rare Book and Manuscript Library Architect: Gordon Bunshaft of Skidmore, Owings, & Merrill Location: New Haven, Connecticut Client: Yale University Project Area: 125,262 square feet Project Year: Completed in 1963 Slide 17 Case Study: Precast Concrete Panels Case Study: Beinecke Rare Book and Manuscript Library Made of Vermont marble and granite, bronze and glass, the exterior gives the illusion that the building is completely solid when viewed from the outside. Yale Universitys Beinecke Rare Book and Manuscript Library is the largest building in the world dedicated to the containment and preservation of rare books, manuscripts, and documents. Slide 18 Rain Penetration & Moisture Control Precast Concrete Panels Rain Penetration & Moisture Control A rainscreen is the first line of defence against wind-driven rain, and as such is subjected to all forces leading to rain penetration through its openings and imperfections. Slide 19 Air Barriers & Sealants Precast Concrete Panels Air Barriers & Sealants Moisture Protection The most common moisture protection system used with precast concrete wall systems is a barrier system incorporating an adequate joint seal. In some cases where additional moisture protection is needed, the application of a sealer or a concrete coating is also used. Sealers can be either clear or pigmented if used as an enhancement of the precast appearance. Film-forming coatings usually offer a higher level of performance but will have a significant impact on the appearance of the precast concrete unit. The precast concrete panel should also be designed to provide the appropriate level of durability for the planned exposure. Durability can be improved by specifying minimum compressive strengths, maximum water to cement ratios, and an appropriate range of entrained air. Slide 20 WORK CITED STONEPANELS.COM SKYSCRAPERPAGE.COM TRAVERTINE.COM