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Because it is a true unitized curtain wall system, it employs the horizontal expansion assemblies with gaskets, making the typical sealant joints between floor slabs and window wall frames obsolete - double pane glass panels for sale. The system of the invention also employs fully integrated, fixed and sliding anchors enabling ease of installation while allowing for construction slab tolerances and vertical live load movements between floor levels.
The preferred embodiments of the invention also provide other advantages, as described hereinafter. DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS OF THE INVENTION The invention can be applied in many different manners, some embodiments exploiting only a selection of the advantages of the invention rather than all of them. In some cases, for example, it may be decided to compromise on certain advantages to reduce costs.
FIGS. 4, 5 and 6 present a variation where the sliding anchor is mounted on the underside of the upper floor slab, and the fixed anchor is mounted on the top surface of the lower floor slab. spandrel glass panel. FIGS. 7, 8 and 9 present the opposite arrangement—where the sliding anchor is mounted on the lower slab, and the fixed anchor is mounted on the upper.
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4, 5 and 6 is preferred because it is easier to fire proof. FIG. 4 presents a vertical cross section of the arrangement where the sliding anchor is mounted on the underside of the upper concrete floor slab. In this particular arrangement, the rigid panels 40 may be pre-fabricated with a large section of vision glass 50 and a smaller section of spandrel glass 52.
It could also be finished with any typical architectural material such as granite, limestone, stainless steel, aluminum plate or composite panels. Similarly, the spandrel glass panel 52 could also be filled with an insulated panel, a laminated panel, or a monolithic panel consisting of any architectural material including granite, limestone, stainless steel, aluminum plate or composite material - double pane glass panels for sale.
Some systems use inexpensive glass units with a single seal. If the single seal fails, the units are going to break down and start fogging up. A single-sealed glass pane is lower in cost than a double-sealed unit, but provides an inferior product, hence it is preferable to use double-sealed units.
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Regular vision glass is one inch thick, comprising ¼ inch glass, a ½ inch air space, and ¼ inch glass. However, the invention can also be implemented with triple glass units, which are often 2 inches or 2½ inches thick, or other glass systems. The vision glass 50 and spandrel glass 52 portions are vertically interconnected with one another via an extruded aluminum transom 54, which is finished with an exterior aluminum or stainless steel cap 56 and pressure plate.
Both are available in many standard and custom shapes. An alternate option is to have a capless horizontal joint with structural silicone applied to the glass. Between the concrete slab 16 and the spandrel glass 52 a layer of insulation 58 is generally required, such as mineral board insulation with an aluminum foil backing or metal back pan (as required for the installation).
Additional mineral board insulation 60 and a smoke seal 62 are installed in the field as required to comply with local fire codes. spandrel insulation. Typically, this work is done by a specialized contractor and not by the installer of the curtain wall or wind wall system. The top edge of each pre-fabricated rigid panel 40 is finished with an extruded aluminum header 64, which includes a horizontal airseal gasket 66.
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With this arrangement, the thermal cycling of expansion and contraction can be accommodated without requiring a large bead of caulking as in window wall systems. An enlarged detail of the arrangement of components 52, 54, 56, 58, 64 and 66 is presented in FIG. 5. Note that in the system of the invention all of the joints are gasketed; no caulking or other sealants are used for weatherproofing.
The gaskets are preferably made of high-grade materials such as silicone. Less expensive EPDM (Ethylene Propylene Diene Monomer) or santoprene thermoplastic gaskets will not last as long, though some markets may demand them because of their lower cost. It is also notable that the sills, headers and mullions of the invention are designed to protect the gaskets from having to face environmental conditions directly.
5, for example, it is clear that the horizontal airseal gasket 66 is protected by a labyrinth of aluminum extrusions. The rigid panels also include, of course, vertical mullions 68. The vertical mullions 68 in FIGS. 4, 5 and 6 are all notched at the top, to accommodate the “top of slab†installation for the sliding anchor 74.
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7, 8 and 9 are all notched at the bottom to accommodate the “bottom of slab†installation for the sliding anchor. The notch must be wide enough to accommodate the sliding anchor, but still thick enough to allow room for insulation to be installed between the spandrel glass 52 and the face of the concrete slab 16, 16′.
The invention provides a unitized system, so each independent unitized rigid panel 40 will have a male portion of a vertical split mullion on one side and a female portion on the other. These complementary pairings of vertical mullions simply connect together as the building wall is assembled in a sideways direction.
One could use mechanical fasteners such as sheet metal screws to hold them rigidly together, but this would generally not be desirable. The slipping connection between the halves of a given vertical mullion 68 allows for thermal movement and building seismic movement. Rather than using vertical split mullions, some installations use “stick†curtain wall systems.
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Though the invention could be applied to a stick system, there are many disadvantages to such systems, particularly the high installation cost. Pre-fabrication and pre-assembly are desirable for at least two reasons. As noted above, field labour costs are very high in some urban areas—much higher than they are in more industrial areas.
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