| 摘要 |
PURPOSE:To save materials and shorten a term of works by temporarily previously providing step members on support rods and sliding upward the support rods successively to build floors and steps alternatively sequentially. CONSTITUTION:Support rods 1, 2 are fixedly erected in predetermined intervals on existing floors 4 and steps, and a step member 3 at least by one story is disposed on the insides of the support rods 1, 2 to be successively provided on the existing step. Next, a floor 4 of a story corresponding to the step member 3 is built integrally and then the support rods 1, 2 are lifted by a fresh floor 4 to which are fixed the lower portions of support rods 1, 2. Further, next step members 3 are provided on the insides of projections of the support rods 1, 2. Thus, the floors and steps are alternatively successively built, so that the step previously built on the floor can be utilized for transportation of materials to the upper story or assemblage of floor frames or the like to save materials and shorten a term of works. |
