National Fire Protection Association 1 Batterymarch Park, Quincy, MA 02169-7471 Phone: 617-770-3000 Fax: 617-770-0700 www.nfpa.org
M E M O R A N D U M TO: NFPA Technical Committee on Means of Egress FROM: Linda MacKay DATE: August 12, 2011 SUBJECT: BHMA A156.24 Canvass Ballot Results The results of the BHMA A156.24 Canvass ballot are: 26 Members Eligible to Vote 16 Affirmative (Strull w/comment) 6 Not Returned (Bonisch, McMahon, Nuschler, Schwarzenberg, Tapper and Tierney) 4 Negatives (Barlow, Collins, Frable and Lathrop) Affirmative and Negative votes with comments are attached. Reasons for negative votes, etc. from alternate members are not included unless the ballot from the principal member was not received. /lm
BUILDERS HARDWARE MANUFACTURERS ASSOCIATION 355 Lexington Avenue, 15th Floor, New York, NY 10017-6603
Tel: 212-297-2122 Fax: 212-370-9047 www.buildershardware.com
July12,2011To:CanvassListParticipantsSubject:ANSICanvass2LetterBallotonProposedRevisionofBHMAA156.24DELAYED EGRESS LOCKING SYSTEMS CANVASS2followingconsiderationofULandNFPAconcurwithcommentsvotesontheinitialballotDueDate:July25,2011
Scope of Standard: This standard covers products us ed in connection with c onventional exit devices or locks causing the doors to rem ain locked after releas ing actuation for a predeter mined length of tim e. Performance criteria are included for functional, cycle, operational, fail-safe and overload requirements.
PleaseVote:
ConcurwithoutComments_______________
*ConcurwithComments___________________
*Negative___________________________________
*Abstain____________________________________
*VotestoConcurwithComments,Negative,orAbstain,mustbeaccompaniedbyreasons.Negativevoteswithoutreasonswillbeprocessedwithnofurthernoticetothesubmitter.Thankyou.Comments:____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________Signature:______________________________________________________________________________________PrintName:_____________________________________________________________________________________Company:_______________________________________________________________________________________Date:___________________________________________________________________________________PleaseReturnTheBallotbyMonday,July25,2011To:LindaMacKayNationalFireProtectionAssociationEmail: [email protected]: 6179847110Attachments:CopyofStandardandCanvassList
Charles V. BarlowStamp
BHMA Canvas Ballot BHMA A156.24 Delayed Egress Locking Systems Explanation of Negative July 19, 2011 X See Attached
David S. Collins The Preview Group, Inc. July 19, 2011
BHMA Canvas Ballot BHMA A156.24 Delayed Egress Locking Systems Explanation of Negative July 19, 2011 My negative is based on the following sections and the difficulty with the language in them: 3.1
3.1 When the releasing mechanism of a delayed egress locking system is
actuated with a nuisance delay of not more than three seconds, as permitted by
the authority having jurisdiction, with a force not to exceed a 15 lbf (67 N) on the
door or release device, for the actuating bars of exit devices, a 28 lbf-in (3 Nm)
for levers, and a 9 lbf-in (1 Nm) for knobs an irreversible process shall be
initiated that will permit the door to be opened. After such zero to three second
period, an audible signal shall be activated in the vicinity of the door equipped
with the delayed egress locking system thus indicating to the user of the door that
the system is operative, and a delay period of not more than 15 seconds, or 30
seconds when permitted by the authority having jurisdiction, shall commence,
allowing the door to be opened.
I do not understand the context of the statement: "After such zero to three second period, ." The only reference to a period in this paragraph is to "a nuisance delay of not more than three seconds." Using a zero period of time means it can be unlocked as no force is necessary to open the device? It seems that the paragraph intends to allow a force of up to 15 lbf for up to three seconds without initiating the unlocking process. What is says is the releasing mechanism is actuated with a delay. How does a delay do something? Should this be broken into two parts? First state what initiates the irreversible process pressure of up to 15 lbf. Then state that a nuisance delay in the initiation of the process can be up to 3 seconds when the jurisdiction permits. Then the process of unlocking can be described. 3.4 I believe the language in this section does not belong in the standard.
3.4 Delayed egress locking systems shall be used only in buildings protected
throughout by an approved automatic fire detection system or an approved
sprinkler system or as otherwise required by the authority having jurisdiction.
Upon the initiation of such systems, the time delay feature shall become
inoperative and the releasing mechanism of the lock shall operate without the
delay.
The standard can prescribe how the device operates and how it is manufactured and tested, but should not indicate where it is to be used in a building design, that is within the scope of the building codes. Similar statements about what the codes require are found in the Appendix. 3.7
3.7 The releasing mechanism of delayed egress locking systems shall require
only one motion to initiate the irreversible process of opening, and the method of
operation shall be obvious under all lighting conditions even in total darkness.
I do not understand this section and how it can be applied or enforced. What is the standard by which the enforcement official or manufacturer can determine if the operation is obvious? Obvious to whom? 3.12
3.12 Delayed egress locking systems shall be labeled or listed by a nationally
recognized independent testing laboratory and be under an in-plant the follow-up
inspection service of, and at intervals required, by the certifying laboratory.
BHMA Canvas Ballot BHMA A156.24 Delayed Egress Locking Systems Explanation of Negative July 19, 2011 The changes make this sentence impossible to understand. It indicates that the systems be under the inspection service of what? It would be better stated if it said "under the follow-up inspection service of a certified laboratory at the laboratory's required intervals." 5.3 I do not understand this section:
5.3 Strength Test Actuate the time delay delayed egress system and apply and
maintain 400 lbf. to the door approximately 3 in. (76mm) from the latch edge
and 40 in. (1020 mm) from the floor in the direction of door swing. The latching
mechanisms shall be disengaged unless the latching mechanisms are an integral
part of the delayed egress system. The door shall not open and the device shall
function normally after release of the force.
The section says the latching mechanisms shall be disengaged, and then says the door shall not open after the release of the force. What keeps the door from opening once the mechanism is disengaged? Is the standard saying the door remains in the closed position when the force is removed? How do we know if the device functions normally if it can't open the door? Appendix There are several references to various codes (particularly NFPA 101 and the IBC) but no reference as to the year of the code document being referenced. David S. Collins
BUILDERS HARDWARE MANUFACTURERS ASSOCIATION 355 Lexington Avenue, 15th Floor, New York, NY 10017-6603
Tel: 212-297-2122 Fax: 212-370-9047 www.buildershardware.com
July12,2011To:CanvassListParticipantsSubject:ANSICanvass2LetterBallotonProposedRevisionofBHMAA156.24DELAYED EGRESS LOCKING SYSTEMS CANVASS2followingconsiderationofULandNFPAconcurwithcommentsvotesontheinitialballotDueDate:July25,2011
Scope of Standard: This standard covers products us ed in connection with c onventional exit devices or locks causing the doors to rem ain locked after releas ing actuation for a predeter mined length of tim e. Performance criteria are included for functional, cycle, operational, fail-safe and overload requirements.
PleaseVote:
ConcurwithoutComments_______________
*ConcurwithComments___________________
*Negative___________________________________
*Abstain____________________________________
*VotestoConcurwithComments,Negative,orAbstain,mustbeaccompaniedbyreasons.Negativevoteswithoutreasonswillbeprocessedwithnofurthernoticetothesubmitter.Thankyou.Comments:____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________Signature:______________________________________________________________________________________PrintName:_____________________________________________________________________________________Company:_______________________________________________________________________________________Date:___________________________________________________________________________________PleaseReturnTheBallotbyMonday,July25,2011To:LindaMacKayNationalFireProtectionAssociationEmail: [email protected]: 6179847110Attachments:CopyofStandardandCanvassList
DavidWFrableTypewritten Text X
DavidWFrableTypewritten TextSee attachment for reasons for providing a negative vote.
DavidWFr
