Abstract of Special Research Report (SRR-81-1)
National Institute of Occupational Safety and Health, Japan
Special Research on Countermeasures for Safety of Scaffold etc. against Strong Wind
|Yoshitada MORI and Yoshimasa KAWAJIRI|
: Failure accidents of scaffold have generally been decreasing but those caused by wind still occur.
Determination of the Basic Wind Velocity All Over Japan
|Yoshitada MORI, Kinichi KINOSHITA and Yoshimasa KAWAJIRI|
: For the purpose of computation of wind load for scaffold and other temporary equipments, the basic wind velocity in each place of Japan has been studied in consideration of followings ;
Actual Size Experimental Examonation of Wind Force Acting on Scaffold
|Kinichi KINOSHITA and Yoshimasa KAWAJIRI|
: Wind force acting on scaffold depends on not only the aspect of scaffold but also states of back building, and nowadays they were little made clear. Wind tunnel tests are usually carried out in order to make clear them. In this study we also intended to have wind tunnel tests in cooperation with any university and any construction company, but for certain reasons we left the execution of tests to their hands, and we took part in the planning of tests and completion results. On the wind tunnel tests, wind force coefficients were decided tentatively.
Reactive Force of Ties-to-Sall with Horizontal Load
|Kiyoshi FUKAYA and Noboru SUGIMOTO|
: It is difficult to calculate theoretically the reactive force of ties-to-wall with horizontal load because scaffold is the structure which has some "play" in coupling point and is not statically determinate.
Pulling-out Strength of the Anchors for Tie-to-wall
: Ties-to-wall for scaffolds are usually used when their tensile and compressive strength is higher than 1,000 kg.