“A Structural glass glazing is the type of curtain wall which consists of glass that’s anchored back to a structure without the use of continuously gasket aluminum pressure plates or caps”. The glass is often comprised of monolithic, laminated, dual-glazed or maybe triple-glazed insulating glass units (IGUs).
The back-up structure may use horizontal and/or vertical aluminum mullions or be a glass mullion, steel blade, cable or chrome steel rod. The interior and exterior may use extruded silicone/EPDM gaskets, or a wet sealed silicone counting on the system. This system creates a totally clean, flush exterior appearance while the inside members have many various options counting on design and budget.
A stick-built structural glazing system is one among the oldest and most conventional curtain wall types. It is manufactured from similar components thereto of a captured system, with the exception of an exterior aluminum pressure plate and cap with gaskets to carry the glass place. It is either siliconed or toggle fastened in situ on site counting on the manufacturer’s system.
The toggled system glazing is predominantly shop fabricated to possess either a channel bonded to the rear of the glass with silicone, or to possess the insulating glass spacer frame with a reveal to fasten to internally. These methods allow for dry fixing of the units on site to eliminate curing time. Otherwise, the systems that are wet sealed on site must have the glass temporarily clamped in site for 1-2 weeks to assure the silicone is fully cured before the exterior silicone weather seal is applied.
Besides an exterior wet silicone/gasket seal, air and moisture control is achieved through what's called pressure equalization. Pressure equalization is a means by which air within the system located between the glass and aluminum mullions helps to drain water at each lite of glass (zone drainage) or at the base of the system (overall system drainage). These systems are used for low-rise projects less than 15,000 sq. ft. of area, projects where the labor is less expensive, and projects with low repetition.
A unitized structural glazing system may be a structural glazing system. Multiple glazing types and materials are often combined into one “unit” during a quality-controlled shop environment. The glazing materials are siliconed in situ and allowed to completely cure to offer an identical flush exterior appearance thereto of the stick-built system, without the concerns for weather conditions on site (as you should not silicone below 40 degrees Fahrenheit) and quality of sealant application on site by the tradesmen. These units are often installed one panel tall and one panel wide or sometimes, two panels tall or two panels wide.
After the glass, spandrel materials, and anchors are glazed into unit frames within the shop, they are loaded onto flatbed trucks to be installed “just in time” at the job site. The units receive additional silicone/EPDM gaskets after they're set by crane from the surface or from each floor to make the “stack joint”. The loading joint acts as the complete air and moisture barrier of the system allowing a weep at each floor. Unitized systems handle movement much better than most others because each panel is gasketed together to be able to move independently with the structure, and the additional movement capacity of the anchors.
• Heat resistance
• Breakage resistance
• Chemical resistance
• Hardness and Brittleness. It is a hard material as it has great impact resistance against applied load
• Color and Shape Varieties.
• Fire Resistant Glazing.
• Property Modification.
Structural glazing is often wont to create all-glass façades. Due to its design, structural glazing also provides:
• A good level of waterproofing
• Excellent sound insulation
• An easy-to-clean surface
• Protection for the load-bearing structure
Glazing’s (single panes or insulating glazing) will generally be factory- bonded on a metal frame. The glass and frame unit are then transported to the location and glued to the load-bearing structure.
This technique is often wont to create an "all-glass" façade during which the particular structure is hidden behind the glass. Glazing during which the silicone seal is meant to transfer the stresses and to be immune to UV radiation since there's no rebate on the sides. The structural glazing façade technique is often used with single panes of glass, coated or non-coated window enameled glass, etc.
• Glass Density
• Glass Compressive Strength and Tensile Strength
• Glass Young’s Modulus or Modulus of Elasticity
• Glass Poisson’s Ratio
• Glass Linear Expansion or Co-efficient of Thermal Expansion