Standards & Legislations >Mortice Locks |
| |
| Standards and Certification |
| |
BS EN12209 Building Hardware-mechanically operated locks, latches and locking plates. |
| |
| Digit 1-category of use |
| Three categories of use are identified: |
-grade 1: low frequency of use by people with ahigh incentive to exercise care and a small chance of misuse, e.g. internal residential doors
-grade 2 : medium frquency of use by people with some incentive to exercise care but where there is some chance of misuse, e.g. internal office doors
-grade3 : high frequency of use by public or others with little incentive to exercise care and with a high chance of misuse,e.g.public doors |
| Digit 2-Duarbility |
| Twelve grades are identified with minimum figures for deadbolt and snib operation,and latch bolt operation with and without side load,as shown.The side load is applied to the latch bolt when it is being withdrawn. |
 |
| Increasing Side Load |
| grade C |
grade H |
grade M |
grade S |
grade X |
| grade B |
grade G |
grade L |
grade R |
grade W |
| grade A |
grade F |
|
|
|
|
| |
| Digit 3-Duarability |
| Nine grades are identified with minimum figures for closing force at various door masses as shown.Note: closing force is from a standing start : i.e. fully extended latch bolt in contact with striking plate at start of test. |
| |
| |
Maximum
closing force |
up to 100kg |
Door mass up to 200 kg |
above 200kg |
| 15N |
grade 7 |
grade 8 |
grade 9 |
| 25N |
grade 4 |
grade 5 |
grade 6 |
| 50N |
grade 1 |
grade 2 |
grade 3 |
|
| |
| Digit 4- Fire resistance |
| Two grade are identified :- |
| -grade 0 : not approved for use on fire/door assemblies |
| -grade 1 : suitable for use on fire/smoke door assemblies tested to BS EN1634-1 etc. |
| Note 1. A grade 1 classification means only that the lock has been designed foe use on fire/smoke control doors; the actual fire performance achieved(e.g fire integrity of 30 miniutes on a partially glazed timber door etc.) will be contained in a seprate fire test report. |
| Note 2. where a product is intended for fire/smoke door use(i.e a "1" in box 4), it must be possible to demonstrate compliance with the Essential Requirements of the Construction Products(Amendments) Regulations.It is recommended that the product should bear the CE mark (see section on CE marking). |
| |
| Digit 5-Safety |
| No requirement, but note: a lock or latch conforming to this standard can, at he same time,also be part of an exit device conforming to BS EN 179 or BS EN 1125. |
| |
| Digit 6-Corrosion resistance |
| Eight grades are identified with neutral salt-spray (NSS) corrosion resistance grades from BS EN 1670:1998, with and without temperature resistance as |
| shown :- |
Corrision resistance
(NSS) |
| Temperature resistance |
| No requirement |
-20c to +80C |
|
| 240 hours |
grade D |
grade G |
| 96 hours |
grade C |
grade F |
| 48 hours |
grade B |
grade E |
| 24 hours |
grade A |
|
| No requirements |
grade 0 |
|
|
| |
