ISO 8274:2005 pdf free
ISO 8274:2005 pdf free.Windows and doors – Resistance to repeated opening and closing – Test method
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 altermately in a continuous cycle.
Side hung casements and leaves are operated from the closed position to an open position of 90°±10°, or to the stopping position of the restrictor or closing device if this occurs at less than 90°. For other modes of operation,casements, sashes or leaves are operated from the closed position to the full opened position unless specified otherwise. However the stopping position shall not be less than 60% of the fully open position.
Unless otherwise specified, dynamic forces shall be applied at both ends of the stroke.
A surround shall be constructed, capable of adjustment for the size of the specimen to be tested. It shall be sufficiently rigid to withstand the test loads involved in the movement of the casements, sashes or leaves without deflecting to an extent likely to impose bending stresses or to impair jointing either of the frame or its casement,sash or leaf.
NOTE A suitable frame would, for example, be of such stiffness that the mid-span deflection of any member likely to be loaded, would not exceed 2 mm due to the application of a 6 kN load at any point and in either direction in relation to the plane of the test specimen.ISO 8274 pdf free download.
