| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an assembled handhole which is light for high transportability, and has high workability in which assembling can be performed while adjusting height corresponding to the depth of an underground wire groove at a construction site. SOLUTION: A box-type reinforced plastic handhole consists of a bottom plate 1, four side plates 2, and a ceiling plate 4 formed with an opening 4a for covering a lid 3, whereas the four side plates 2 are formed by stacking a plurality of side plate assembling plates 20 which involve right-angle joining pieces 20a bending to the outside from both upper and lower edges at right angles, and inclined joining pieces 20b bending to the outside from both right and left edges at an angle of 45 degrees, joining and fixing the right-angle joining pieces 20a to each other, and joining and fixing the inclined joining pieces 20b to each other. A handhole is assembled by joining and fixing the right-angle joining piece 20a at the side plate 2 lower end with the four peripheral edges of the bottom plate 1, and joining and fixing the right- angle joining piece 20a at the side plate 2 upper end with the four peripheral edges of the ceiling plate 4 respectively. By increasing or decreasing the stacking number of the side plate assembling plates 20, it is possible to adjust the height of the side plates 2 corresponding to the buried depth of an underground wire groove.</p> |
