| 摘要 |
A boom stick for use with log booms in water transport and storage of logs is formed by a plurality of vehicle tires (used) arranged in substantially axially aligned, side by side relationship with their tread surfaces forming the outer periphery of the boom stick. Axially extending reinforcing rods pass through the rim receiving holes in the tires and hold the tires together and a material (preferably foam concrete) having a higher specific gravity of less than 1 substantially fills the tires. In a preferred arrangement the tires are filled to a preselected level with light weight material and the remainder filled with a material having a higher specific gravity than the light weight material to provide a longitudinally extending heavy segment that orients the boom stick in the water. |
