TABLE I
EQUIVALENT FORCED ENTRY STANDARDS
Very
Threat Severity Levels
Low
Low
Medium
High
_______________________________________________________________________________
(where
(where
applicable)
applicable)
Number
Attack
Forced Entry
of
Times in
Standards
Attackers
Minutes
Protection Level
6
15
X
60 Minute
Protection Level
6
60
X
_______________________________________________________________________________
ABBREVIATIONS:
ASTM
-
American Society for Testing and Materials
HPW
-
H. P. White Laboratories
UL
-
Underwriters Laboratories, Inc.
SD
-
U. S. Department of State
The forced entry test standards described below
include both those developed and used by independent
testing laboratories and those developed for
specific application by other Government agencies.
These standards differ in attack tools employed, the
number of persons (if any) used in the attack force,
the attack duration, and the failure criteria.
Before specifying construction components to meet a
standard, obtain the standard and become familiar
with it. A brief description follows each standard
and, when possible, the standard is equated to
forced entry severity levels from TM 5-853-1.
1. American Society for Testing and Materials
(ASTM).
a. "Standard Test Method for Security Glazing
Materials and Systems," ASTM F 1233. Acceptance of
component is determined by one of the following:
ballistics attack only; physical attack only to
include blunt tool impacts, sharp tool impacts,
thermal stress, and chemical deterioration; or
ballistics attack followed by and in combination
with physical attack. The physical attack tools
used in the Class V testing sequence are similar to
the "low forced entry severity level." The physical
attack tools used in the Class IV testing sequence
are similar to the "very low forced entry severity
level." The use of power tools or devices requiring
more than two persons to transport or operate is
specifically exempted from testing. This test
method defines two factors (the tools employed and
the techniques and methods used by the attackers)
SECTION 11025
Page 13
Previous Page
