PL3 GLAZING BARS Comprising 6mm clear float toughened glass outer 12mm Cavity and Low E laminated inner With reference to the above we confirm that we carried out a roofing assembly test at D & D Glazing’s premises on the 13th July 2006.
Prior to the commencement of the testing we were provided with documentation prepared by the Advisory Committee for Roofwork - ACR [M] 001:2005.
Mr David McDowall of the above address supervised the entire test as the competent person and he has provided a dated signature below.
The principle of the test was to determine non-fragility of a roofing assembly by releasing a specified weight in a controlled fall under gravity towards the assembly. The results of the test classify the assembly in accordance with the degree of resistance to withstand the impact from the weight.
The assembly tested was the PL3 System. The test piece spanned a distance of 1560mm, supported on a steelwork testing frame. The testing frame was pitched to an angle of 27.5 degrees to represent a roof slope.
The assembly was subject to multiple drop-tests using the following apparatus. A cylindrical sand bag (45kg in mass)was released (using a quick release mechanism) from a height of 1200mm. The height was measured from the underside of the bag to the highest surface of the assembly under test.
Three drop tests were carried out in accordance with the test method described in ACR [M] 001:2005.
Following the third drop test the sand bag impactor was retained on the assembly for in excess of five minutes and therefore the PL3 System may therefore by classified as a Class B Non-fragile Assembly in accordance with ACR [M] 001:2005.
This concludes our report.
David McDowall
Mr David McDowall – Proprietor D & D GLAZING (Glasgow) Ltd
