Quantcast Example Number 4:  System Analysis

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Example Number 4:  System Analysis.  This example
illustrates how an analyst would select a glazing system after
determining the design basis threat in Example No. 2 and levels
of protection in Example No. 3.  The example begins with
structure number 1 of Figure 5. Table E-8 through Table E-16
present the analyst's actions for this example.
Background Information.  Communications equipment is
the asset to be protected.  The following information applies to
the analysis.
Windows.  The communications equipment is housed in a
room with two windows.  Center-line of the windows is about 5
feet (1.5 m) above the ground.  Each window is roughly 2 feet
(0.61 m) high by 3 feet (0.91 m) wide.  Glazing height and width
are 22 inches (0.56 m) and 34 inches (0.86) from gasket center-
line to gasket center-line, respectively.
Exterior Attack Tactic.
An aggressor can throw a bomb
directly at the communications equipment room windows from
outside the fence line. Standoff distance for an attack is 60
feet (20 m).
Blast Design. Table E-6 presents the results of a blast
design for window frame, anchorage, and wall.


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