How to build a box-culvert by box culvert

摘要

PROBLEM TO BE SOLVED: To provide a method which enables a box conduit to be constructed as inexpensively as possible by eliminating an increase in construction cost.;SOLUTION: The construction of the entrance side and the exit side of the box conduit, which is formed of a plurality of box culverts rectangular in a plan view, is performed by continuously providing the box culvert 11 approximately rhombic in a plan view, one side wall 22 of which has almost the same width (a) as a side wall 17 of the box culvert 10 rectangular in a plan view, the other side wall of which has a narrower width (b) than the side wall 17 and the two corners of which have angles different from each other, and the box culverts 12-16 approximately rhombic in a plan view, the four corners of which have angles different from one another.;COPYRIGHT: (C)2006,JPO&NCIPI