To form a form of a log as a round lumber and enable the use of a short-sized log without damaging a peripheral landscape even after an elapse of a long time, in a left-buried form.
Concrete 9 is placed by using the left-buried form 1 made of the waste log, and the concrete 9 is higher than a fixed frame 2 finally shown in an imaginary line and lower than the upper end of brown embossed Japanese paper 5 after curing. The concrete structure completed thus does not disturb a natural landscape in a periphery because a surface is covered with the log 6 of natural wood, and a brown embossed Japanese paper sheet 5 is rotted, decomposed, weathered and extinguished for a period from three months to one year by an exposure in wind and rain and sunshine. Even when longer years (approximately seven years) pass and the log 6 is rotted and decayed, the peripheral landscape is not damaged because brown embossed Japanese paper sheet 5 is not left. The two or three short-sized round logs in 0.6 to 1 m are connected vertically and fixed on the fixed frame 2 respectively and may be used as the logs 6 in approximately 2 m.
OKUBO TOSHIFUMI
NAKAGAWA YOJI
Next Patent: BASE ISOLATION MEMBER INSTALLING CURING METHOD AND CURING TEMPORARY FIXTURE