This standard specifies the test method for determining the force required when engaging or releasing the hardware of a window and when commencing the movement of a casement or sash, in both opening and closing directions.
It is applicable to manually operated windows of any materials.
2 Normative References
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 5823 Terminology for Building Windows and Doors
3 Terms and Definitions
For the purposes of this document, the terms and definitions given in GB/T 5823 apply, together with the following.
