| 摘要 |
PROBLEM TO BE SOLVED: To cure a tread-board after construction of stairs by effectively utilizing a packing material for packing the tread-board of the stairs. SOLUTION: A surface curing material 2a is attached to a plane position corresponding to a tread-board surface 1a on a packing material 5 of a tread- board 1 of stairs, and a front curing material 2b is attached to a side surface position corresponding to a front face 1b of the tread-board, wherein at the time of construction of the stairs, the packing material 2 is developed to place the surface curing material 2a on a side of the surface 1a of the tread-board and the front curing material 2b on a side of the front face 1b of the tread- board. |
