| 摘要 |
PROBLEM TO BE SOLVED: To provide a standardized wooden immersed mattress efficient in execution work and sufficiently endurable to water force. SOLUTION: In this execution work method of a wooden immersed mattress, both end parts 2 of a log material 1 are worked in a cross section so that a distance 1 up to the center from a pair of respective adjacent surfaces 2a becomes equal regardless of a diameter of a log, and in forming square bars 5 in several rows by assembling square bars 4 having bolt holes 3 penetrated in the center in a well curb shape, bed forming woods 6 are juxtaposed on the square bars 5 by alternating both end parts to be fastened to the square bars 4 by coach screw bolts 11, square bars 8 for arranging bolt holes 9 corresponding to long bolts 7 at intervals are heaped up from the orthogonal direction on the long bolts 7 inserted from below into the bolt holes 3 of both end parts of the square bars 4, a pair of square bars 10 are alternately heaped up from the orthogonal direction on these to be successively set up in several layers to be finally fastened by nuts, and sinking stones are filled in respective well curb spaces to be completed.
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