This part of ISO 834 specifies the procedures to be followed for determining the fire resistance of non-loadbearing vertical separating elements when exposed to heating on one face.The test is neither appropriate for the evaluation of curtain walls (non-loadbearing external walls suspended from the ends of floor slabs) nor for walls containing doors or glazing. For tests of walls containing doors refer to ISO 3008[2].For tests of walls containing glazing refer to ISO 3009[3].The application of this test to other untested forms of construction is acceptable when the construction complies with the direct field of application as given in this document or when