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BS EN 14846

BS EN 14846 Building hardware - Electromechanically operated locks and striking plates

Features assessed include normal use (and abuse) forces, long-term durability, fire/smoke resistance, corrosion, temperature and humidity resistance, and security from both physical attack and electromechanical manipulation.

Classification

This standard has a nine digit classification coding.

Digit 1 - Category of use

Three categories of use are identified (see below) and the forces/torques specified, reflect this:

  • -  Grade 1: low frequency of use by people with a high
    incentive to exercise care and a small chance of
    misuse, e.g. internal residential doors
  • -  Grade 2: medium frequency of use by people with some incentive to exercise care but where there is
    some chance of misuse, e.g. internal office doors
  • -  Grade 3: high frequency of use by public or others with
    little incentive to exercise care and with a high chance of misuse, e.g. doors in public buildings

Digit 2 - Durability

Thirteen grades are identified with minimum figures for deadbolt operation (manual, automatic and electrical) and latch bolt operation (with and without side load) as shown.

Digit 3 - Door mass and closing force

Nine grades are identified with maximum 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.

Digit 4 - Suitability for use on fire/smoke doors

Seven grades are identified in ascending order of smoke/fire resistance as shown:


Grade 0 - No requirement (not intended for use on fire/smoke doors)

Grade A - Suitable for use on smoke door assemblies only

Grade B - Suitable for use on smoke/fire door assemblies (> 15 minutes)

Grade C - Suitable for use on smoke/fire door assemblies (> 30 minutes)

Grade D - Suitable for use on smoke/fire door assemblies (> 60 minutes)

Grade E - Suitable for use on smoke/fire door assemblies (> 90 minutes)

Grade F - Suitable for use on smoke/fire door assemblies (> 120 minutes)

Digit 5 - Safety

No requirement, but note: an electromechanically operated lock or striking plate conforming to this standard can, at the same time, also be part of an exit device conforming to EN 179 or EN 1125, or part of an exit system conforming to prEN 13633 or prEN 13637.

Digit 6 - Corrosion resistance

Fifteen grades are identified with neutral salt-spray (NSS) corrosion resistance grades from EN 1670:1998, and with temperature and humidity resistance requirements as shown.

Digit 7 - Security

Seven grades are identified with minimum figures for requirements relating to physical attack. Principal requirements are shown below.

Digit 8 - Security - Electrical Function

Two grades are identified according to whether or not there is status indication as follows:
Grade 0 No status indication
Grade 1 Audio or visual signal from lock to indicate that deadbolt is fully thrown and deadlocked

Digit 9 - Security – electrical manipulation

Four grades are identified indicating required levels of resistance to various forms of manipulation and interference as shown:

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