Deck plate

Abstract

The application provides a technique for stacking deck plates in a stable state. A deck plate is formed of a metal plate and includes plane portions and ribs provided alternately and continuously. Bottom surfaces of the ribs and contact parts of the plane portions contacting the bottom surfaces of the ribs when deck plates in a pair are stacked while being turned upside down relative to each other are formed in complementary shapes.

1 . A deck plate formed of a metal plate and including plane portions and ribs provided alternately and continuously, wherein
 bottom surfaces of the ribs and contact parts of the plane portions contacting the bottom surfaces of the ribs when deck plates in a pair are stacked while being turned upside down relative to each other are formed in complementary shapes.   
     
     
         2 . The deck plate according to  claim 1 , wherein the bottom surfaces of the ribs and the contact parts are each formed in a plane shape. 
     
     
         3 . The deck plate according to  claim 1 , wherein, when the deck plates in a pair are stacked while being turned upside down relative to each other, the entire bottom surfaces of the ribs contact the contact parts. 
     
     
         4 . The deck plate according to  claim 1 , wherein
 each of the plane portions includes protruding streak portions protruding toward one of surfaces, and   the bottom surfaces of the ribs contacting the protruding streak portions when the deck plates in a pair are stacked while being turned upside down relative to each other are formed in shapes complementary to the protruding streak portions.   
     
     
         5 . The deck plate according to  claim 4 , wherein, when the deck plates in a pair are stacked while being turned upside down relative to each other, the entire bottom surfaces of the ribs contact the protruding streak portions. 
     
     
         6 . The deck plate according to  claim 1 , wherein
 each of the plane portions includes protruding streak portions protruding toward one of surfaces, and   the protruding streak portions contacting each other when a plurality of pairs of deck plates stacked while being turned upside down relative to each other are stacked are formed in complementary shapes.   
     
     
         7 . The deck plate according to  claim 6 , wherein, when the plurality of pairs of deck plates stacked while being turned upside down relative to each other are stacked, entire regions of the protruding streak portions of one deck plate contact the protruding streak portions of another deck plate. 
     
     
         8 . The deck plate according to  claim 6 , wherein the protruding streak portions include first protruding streak portions protruding toward a surface on which the ribs are provided on the plane portions, and second protruding streak portions protruding toward a surface opposite to the surface on which the ribs are provided on the plane portions. 
     
     
         9 . The deck plate according to  claim 1 , wherein the deck plates in a pair are stacked while being turned upside down relative to each other, to minimize a height and a width in a transverse direction.