New Provisions in ASTM e‐ A comparison of the Basic and New Analytical Procedures for Determining the. Load Resistance of. ASTM E Standard Practice for Determining Load Resistance of Glass in Buildings Book of Standards Volume American Society for. ASTM E is the main source of technical information for architects and other design professionals to determine the right glass thickness and type to meet a.
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Appendix X1 provides additional procedures to determine maximum lateral deflection for glass simply supported on four sides. If the load resistance is greater than the specified design loading and the center of glass deflection is reasonable, then the trial design is fine and can proceed. Basic Design Procedures The assumptions and calculations result in these basic design procedures that should ast, followed: This practice does not consider the effects of deflection on insulating glass unit seal performance.
This practice does not address aesthetic issues caused by glass deflection. Thermal or insulation improvements achieved with an IGU work day and night in both summer and winter conditions, reducing heat entry and heat loss. This practice assumes that the edges of the asrm are simply supported and free to slip in plane.
For conversion of quantities in various systems of measurements to SI ast, refer to SI A procedure is also presented to calculate the probability of breakage of any annealed lite or ply see Appendix X3for short or long duration loads. The number of glass edges supported. Short and long duration uniform astmm. Typically all four sides are supported in a framed window or a four-sided Structural Silicone Glazing. The design load needs ast, be in psf or kPa.
This practice shall not apply to other applications including, but not limited to, balustrades, glass floor panels, aquariums, structural glass members, and glass shelves. Tempered glass is four times stronger than regular glass; heat strengthened is just two times stronger. Tempered glass deflects just as much as annealed glass.
Monolithic, laminated and insulating glass constructions made with annealed or heat-treated glass. The center of the glass deflection will not result in loss of edge support Key Concepts that Address Wind and Snow Load Calculations There are five key ashm that impact the wind and snow load calculations on a project: The word window comes from a Norse term translated “wind eye”, for “eye on the weather.
The procedures operate under some basic assumptions related to glass fabrication and installation, including:. IGUs reduce sound asmt and provide quieter interior spaces. Latest Video Fun Glass Facts! Invalid Email Address From Name: Accommodating for wind and snow is one of the important upfront considerations in the design and specification process.
The glass has been properly glazed, without any edge damage. For example, orange, red, yellow and violet colored glasses cannot be produced using standard float technology. Glass 6mm thick will weigh 2. Link to Active This link will always route to the current Active version of the standard.
If you see condensation on the outside of your low-e glass windows, it means the coating is working properly. Designing Glass to Resist Wind and Snow Loads Accommodating for wind and snow is one of the important upfront considerations in the design and specification process. If the load resistance is less than the specified design loading, or if the center of glass deflection is excessive, then the trial design needs to be modified and re-tested.
Designing Glass to Resist Wind and Snow Loads
Insulated Glass Units are made with two or more lites of glass with a hermetically adtm space filled with dry air or insulating gas. Appendix X3 presents a procedure to compute approximate probability of breakage for annealed AN monolithic glass lites simply supported on four sides. How much does glass weigh? Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as ast, of the standard.
Invalid Email Address Message: The single source for information on designing, specifying and building with commercial glass. There is a multi-step process that must be undertaken to help ensure the glass 1e300 your project is able to resist these loads. For insulating glass units, this practice only applies to insulating glass units with four-sided edge support.
This practice shall not apply to other applications including, but not limited to, balustrades, glass floor panels, aquariums, structural glass members, and glass shelves. This practice assumes that 1 the supported glass edges for two, three, and four-sided support conditions are simply supported and free to slip in plane; 2 glass supported on two sides acts as a simply supported beam; and 3 glass supported on one side acts as a cantilever.
Work Item s – proposed revisions of this standard. The thermal barrier makes interior spaces more comfortable as it is easier to maintain a consistent indoor environment. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. Work Item s – proposed revisions of this standard.