| 摘要 |
PROBLEM TO BE SOLVED: To enable workers to go up and down safely between scaffolding board without embracing a feeling of uneasiness. SOLUTION: At the end in longitudinal direction of each scaffolding board A equipped with lid, an opening 24 for elevation and sink in the form of a long circle or ellipse is formed and fitted with a lid 25 with the angle part left unprocessed, and foot placing parts 34 and 35 are formed at the angle part. When a person gets through this opening 24 and stands on one scaffolding board A, he can place the feet on the foot placing parts 34 and 35 which have a sufficient area, so that the person can go up and down through the scaffolding board A safely without embracing a feeling of uneasiness. |
