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home » performance: strength and
durability classification »
Various documents, including BS
8214, stress the importance of specifying the appropriate
classification of doors to ensure long-term performance under
anticipated uses. At the time of publication of this document
these classifications are best derived from tests described in BS
DD 171 : 1987, 'Guide to specifying performance requirements for
hinged or pivoted doors (including test methods)', although
equivalent European standards are now available.
The following classifications apply:
LD light duty
Low frequency
of use by those with a high incentive to exercise care, e.g.
private house owners.
MD medium duty
Medium
frequency of use primarily by those with some incentive to
exercise care, although with some chance of accidents or misuse.
HD heavy duty
High
frequency of use by the public and others with little incentive
to exercise care where accidents or misuse could occur.
SD severe duty
Subject to
frequent violent usage.
All Leaderflush Shapland doors and doosrets are either HD or
SD rated.
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