Peak blast pressure capacities

Frame Loads. The window frame must develop the static design strength of the glass pane, r, given in Table II. Otherwise, the design is inconsistent with f rame assumptions, and the peak blast pressure capacity of the window assemblies will produce a failure rate in excess of the prescribed failure rate. This results... 

Figure 1. Peak blast pressure capacity for tempered glass panes a/b = 1.00, t = 1/4 and 5/16 in.

Figure 3. Peak blast pressure capacity for polycarbonate a/b =1.0 t = 1/2 and 1 in.

Figures 2 through 9 are design charts for ultraviolet stabilized polycarbonate under blast load. Charts are provided for pane thicknesses of 1/4, 3/8, 1/2, and 1 inch for pane areas up to 25 ft at pane aspect ratios (pane length to width ratios) of 1.00, 1.50, 2.00 and 4.00. The charts relate the peak experienced blast overpressure capacity, B, for convenient pane dimensions across the spectrum of encountered blast durations. Depending on the orientation of the window to the charge, the blast overpressure may either be incident or reflected. The pane dimensions (measured across the span from the gasket centerline) peak blast capacity at 1000 msec, B, static frame design pressure, r, and the required bite are printed to the right...

Several methods are used to determine peak loads for the static design of the foundation. Such methods may be determined from the blast pressure applied to the building, the bending or shear capacities of supported structural elements, or dynamic reactions of supported elements. In this example, maximum loads from each of the components directly supported by the foundation are used,... 

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