| 摘要 |
PROBLEM TO BE SOLVED: To solve the problem that planking which are laid in a continuous state by connecting the planking with each other cannot be exfoliated from a center portion of a laying surface even if needed.SOLUTION: A planking body 1 is formed in such a rectangular plate shape so as to be laid full. Rectangular planking 9 is obtained by providing, in a side portion of the planking body 1, a connection lock piece 6 and a connection lock hole 7 into which the connection lock piece 6 can be fitted, such that the planking bodies can be connected to each other when laid full. Planking 11 is then obtained by dividing the planking body 1 in such a manner as to include at least either the connection lock piece 6 or the connection lock hole 7 of the rectangular planking 9. The planking 11 are combined to be surrounded by the rectangular planking 9 and laid while being disposed in a connected state by fitting the connection lock pieces 6 and the connection lock holes 7 to each other. The planking 11 can be exfoliated easily even in a central portion of a laying surface. |
