INVESTIGATION INTO THE PROPERTIES OF LONG-SPAN ALUMINIUM ROOFING MATERIALS USED IN CONSTRUCTION INDUSTRIES IN NIGERIA
Publication Date : 01/08/2010
The paper presents the results of experimental investigation on the properties of Aluminum long-span roofing sheets used in building construction in Nigeria. The determination of the properties was done in accordance with ASTM E-466(2000) and NIS 488(2004) using specimens manufactured by three most common aluminum roof material producers in Nigeria. The three most common gauges: 0.45, 0.55 and 0.70 were chosen for the investigation. The results of the tests revealed that the tensile strength, flexural strength and the impact resistance properties increase as the thickness of the aluminum sheet materials increases. The specific gravity of the specimens, also, increases with the thickness of the materials. These results are in consistency with the ASTM standard. It is also evident from the results that the specimen gauge of 0.45 failed to meet the ASTM E-466 and NIS 488 standards for all the variants of the roofing sheets. It is therefore recommended that 0.55 gauge should be the minimum thickness for structural aluminum roofing sheets in the Nigerian building industry.
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