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� <br />0 <br />s <br />Page 3 - $uilding Secuxity Recocn,vendations <br />R�COMMENDED IACKSE'I'S (CO��[MERCIAL BUILDZNGS) <br />�,ock cylinde�s shall be so designed or protected as to <br />from the e�cterior by twisting, pry�,n � Pzeclude disassembly <br />g pu�,ling, or other rnanipulation, (see <br />F�igure �l3) . <br />«hen key-;�-knob locksets are used such as on rear business delivery daors, <br />the �ockset wi1J, be so des' d � <br />�gne or pxot�cted that the lock cannot be comprom- <br />ised by wrenching the knob from the ext�rior or knocking the knob off to gain <br />access Lo the locking means and inanipulating the latch by hand or uith the <br />ai�d of a ccrPwdz�iv�: to gain access, (see Figure /13). <br />The �.atching and strike plate area on key-in-knob locksets will be protected <br />by a�atch guard p],ate or equivalent, to prevent prying the latch ovt of the <br />stzike plate and door frame, (see Figure It3). <br />