Reddy, S. Ravikanth <br/><br/>
Experimental investigation on the steel standing seam roof systems subjected to wind uplift 

 - Vol.48, Issue 04 
 - Chennai  CSIR- Strctural Engineering research Centre  2021 
 - 255-264p. 
<br/><br/> Standing Seam Metal Roofing (SSMR) systems have advantages of<br/>weather tightness, leak-proof performance, durability, and cost-<br/>effectiveness. Codification of SSMR designs is quite complex due to<br/>the interaction of several components. The design of supporting purlin<br/>is also difficult when the resistance from sheeting is accounted for.<br/>Since numerical models have limitations to capture this interaction,<br/>experiment based empirical equations are the only way to design<br/>these systems. Two types of profiles namely Flexlok® and Tracdek®<br/>profiles are widely used in practice. In the former, the roof sheets<br/>under upward wind depend on the clamping force between the sheet<br/>profile and a clamping device called a halter. The latter gets its<br/>strength from the integral folding of the sheet with the mechanical<br/>clamping device. Although these two systems have different load<br/>carrying mechanisms, the behavior of both has an impact on the<br/>secondary load carrying systems such as purlins. Unless this<br/>interaction of the sheeting and the secondary frame systems are<br/>experimentally evaluated, the design does not become rigorous. This<br/>paper presents experimental studies on the interaction behavior of two<br/>types of SS MR systems subjected to wind uplift. A special vacuum<br/>chamber is fabricated as per specifications in ASTM E1592 - 05(2017)<br/>for creating air-pressure differences. The various modes of failure in<br/>these two types of roof systems are captured in the experiments<br/>which will influence the overall behavior of the roof systems. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Civil Engineering
<br/><br/><label>Subjects--Index Terms: </label>Standing Seam Metal Roofing Wind Uplift Rigid Purlin