Waterproof foundation material and waterproof foundation structure

摘要

PROBLEM TO BE SOLVED: To easily form a water proof substrate for a ridge part and a recessed part formed by two water resistant substrate surfaces having different inclination directions and crossing each other. ;SOLUTION: Water resistant substrate surfaces 1, 2 and 3, 4 are respectively formed, wherein they have respectively downward inclinations in two directions on the side of cross-beam and in two directions on the side of gable toward an eaves end around a circumference from a central portion of a roof being the uppermost upstream end. In particular, water proof substrate parts of corner ridge portions 6, 7, 8 and 9 formed by mutually crossing water proof substrates surfaces 1 and 3; 2 and 3; 2 and 4; 1 and 4 are formed by laying a plurality of sets of triangular inclination boards 12. Similarly, the water proof substrate portion of a recessed part 17 is formed by laying triangular inclination boards 18.;COPYRIGHT: (C)2001,JPO