ISO 8274:2005 pdf download.Windows and doors一Resistance to repeated opening and closing一Test method
1 Scope
ISO 8274 specifies the method to be used to determine the mechanical durability of doorsets and the opening parts of windows after a defined number of operating cycles.
It applies, whatever their construction materials and operating systems, to any window or any door in the form of complete assemblies in normal operating conditions.
The parts concerned in the testing are the frame, the opening elements (including any secondary elements) and all essential hardware, including operating devices. It does not include any additional fasteners such as pegstays or cabin hooks, nor any independently installed restrictor.
In this standard, it is assumed that the operating cycle imparts movement to ancillary items such as hinges, stays,balances and other mechanisms.
2 Normative references
This European Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies.
prEN 12046-1:1996 Operating forces - Test method - Part 1: Windows
prEN 12046-2: 1999 Operating forces - Test method - Part 2: Doors
3.4 reference velocity: When casements, sashes or leaves are moved by linear movement, the reference velocity is the actual velocity of the moving parts. When leaves or casements are moved by rotation, the reference velocity is that which can be measured on the closing edge of the member to which is attached the operating device used to carry out the test. Reference velocity is measured in metres per second (m/s.)
3.5 rest time: Time in seconds of a stationary period, either between two changes of direction of movement or between two cycles.
3.6 datum points: Measurement reference points located at 50 mm from each corner of any casement, sash or door leaf on any joint between moving elements.
4 Principles of test
4.1 General
The test specimen has its fasteners released, its casement, sash or leaf is opened to the required resting position,is brought to the closed position and its fasteners secured again before a final rest. This cycle is repeated for the specified number of times or until failure occurs. The duration of each cycle depends upon the stroke (itself depending upon the mode of operation of the specimen), upon the reference velocity, and upon the operations carried out during a cycle (see figures 1 and 2).
NOTE If the test specimen can be operated in more than one mode, e.g. tilt and turn, each may be tested completely and separately on the same specimen, the more frequent mode being addressed first, or the two modes may be tested alternately in a continuous cycle.ISO 8274 pdf download.