Reinforced structural steel decking

Abstract

A structural steel decking panel for supporting wet concrete and subsequently reinforcing the concrete after it has hardened is disclosed. The decking panel includes an elongate profiled steel sheet having a top side and an underside and a plurality of elongate reinforcing members connected to the sheet. The decking panel is characterized in that the strength of the longitudinal shear connection between the sheet and the reinforcing members is sufficiently high to resist longitudinal shear failure between the reinforcing members and the sheet when the decking panel is subjected to top loading with construction loads and wet concrete.

1 - 13 . (canceled)  
   
   
       14 . A structural steel decking panel for supporting wet concrete and subsequently reinforcing the concrete after it has hardened, the decking panel comprising: 
 (a) an elongate profiled steel sheet having a top side and an underside that is rolled-formed from flat steel strip and has a maximum thickness of no more than 1.6 mm; and    (b) a plurality of elongate reinforcing members connected to the sheet and selectively reinforcing the sheet, the reinforcing members extending along the whole length of the sheet or over short lengths of the sheet;    wherein the strength of the longitudinal shear connection, as defined herein, between the sheet and the reinforcing members is sufficiently high to resist longitudinal shear failure between the reinforcing members and the sheet when the decking panel is subjected to top loading with construction loads and wet concrete.    
   
   
       15 . The decking panel defined in  claim 14  wherein there is complete shear connection, as defined herein, between the sheet and the reinforcing members.  
   
   
       16 . The decking panel defined in  claim 15  wherein the shear connection between the sheet and the reinforcing members is at least 30% of the complete shear connection, as defined herein.  
   
   
       17 . The decking panel defined in  claim 16  wherein the shear connection between the sheet and the reinforcing members is at least 40% of the complete shear connection.  
   
   
       18 . The decking panel defined in  claim 14  wherein there is partial shear connection, as defined herein, between the sheet and the reinforcing members.  
   
   
       19 . The decking panel defined in  claim 14  wherein there is complete interaction, as defined herein, between the sheet and the reinforcing members.  
   
   
       20 . The decking panel defined in  claim 14  wherein the reinforcing members are connected to the underside of the sheet.  
   
   
       21 . The decking panel defined in  claim 14  wherein the reinforcing members are welded or glued to the sheet.  
   
   
       22 . The decking panel defined in  claim 14  wherein the reinforcing members are elongate members.  
   
   
       23 . The decking panel defined in  claim 22  wherein the elongate members extend in a longitudinal direction of the sheet.  
   
   
       24 . The decking panel defined in  claim 14  wherein the reinforcing members are in the form of a bar or rod or plate.  
   
   
       25 . The decking panel defined in  claim 14  wherein the profiled sheet includes top and bottom flat flanges interconnected by web elements.