METHOD OF BUILDING MANHOLE

摘要: PURPOSE:To prevent displacement in position of a block, by method wherein bolt is screwed to the end one box with hole mounted surface other and two blocks are abutted on each insert head part into for tightening. CONSTITUTION:An oblique wall block 5 placed straight 4 manner that joints 5a 4b other, 18b 18, through medium nut 17, inserted 19b 19, attached 5, 19. After washer 22 located between 18 inner an 19a tightened join 5. Thereafter, interior 19 filled motor 23. When body 3 piled bottom 2 3, they joined similar described above.