BURGLARS BEWARE - 'THREAT ANALYSIS' LEADS TO HOMEOWNER SECURITY

• NCJ Number: 16043
• Journal: DIMENSIONS/NBS Volume: 58 Issue: 2 Dated: (FEBRUARY 1974) Pages: 45-46
• Author(s): ANON
• Date Published: 1974
• Length: 2 pages
• Corporate Author: US Dept of Commerce
• Publication Format: Article
• Language: English
• Country: United States of America

Annotation

DISCUSSION OF A RESEARCH PROGRAM DESIGNED TO DEVELOP REPORTS, GUIDELINES AND PERFORMANCE STANDARDS FOR JUDGING THE VULNERABILITY OF EXTERIOR DOORS TO BREAKING AND ENTERING.

Abstract

A 'THREAT ANALYSIS' STUDY REVEALED TWO MAJOR CLASSIFICATIONS OF ENTRY (UNSKILLED, AND SEMI-SKILLED) WHICH ARE DIVIDED INTO HIGH AND LOW LEVELS OF ATTACK. THIS PROGRAM IDENTIFIED 14 MAJOR METHODS OF ATTACK, INCLUDING KICKING, JIMMYING, AND SPREADING THE DOOR FRAME WITH A CAR JACK. A NUMBER OF TESTS WERE DEVISED TO DETERMINE WHETHER A DOOR AND THE SURROUNDING FRAME AND WALL ASSEMBLY COULD WITHSTAND SUCH ATTACKS. A DRAFT STANDARD HAS BEEN DRAWN UP BY RESEARCHERS WHICH SPECIFIES THAT MINIMUM-STRENGTH DOORS SHOULD RESIST AN IMPACT OF TWO BLOWS AT 80 JOULES (59 FOOT-POUNDS) AND A SPREADING OR JIMMYING FORCE OF 6,670 NEWTONS (1500 POUNDS).