| 摘要 |
<p>PROBLEM TO BE SOLVED: To keep mud from being carried in a temporary office for work or a unit house by forming a step member by a net-like memer of a plate material where holes are bored. SOLUTION: A staircase 2 is provided on the wall surface of a two-story temporary office 1 for works. An auxiliary step 3 is installed in the lower part of the staircase 2. In this case, the lower end 4 of the staircase 2 is put on a square rod 5 placed on the ground, an auxiliary step 3 is put on the central part of the staircase 2 on the square rod 5, and the height of the auxiliary step 3 is adjusted by support legs 6. The auxiliary step 3 comprises a step member 7 and the height adjustable support legs 6. The step member 7 is so constructed that a striped iron plate is disposed in the central part, expand metal net-like members are provided on both sides on the same plane, a frame plate for reinforcement is provided on the outer peripheries of the plate and the net-like member, and these members are connected to each other by welding. By this net-like member, mud is kept from being carried in the temporary office 1 or the like.</p> |
