CABLE PROTECTION CONDUIT AND LAYING OF THE SAME

PROBLEM TO BE SOLVED: To easily enable laying of a new cable into the already laid cable protection conduit, by providing a manipulating section for inserting or removing a first cable protection conduit into a second cable protection conduit at the desired position of the second cable protection conduit to accommodate the first cable protection conduit. SOLUTION: A manipulating section 1 is composed of U-shape cable accommodating section 1a made of concrete and a cover 1b made of concrete to close the upper surface aperture. A U-shape end section 1c of the cable accommodating section 1a is attached to a side wall 2a of a man-hole box 2, while the U-shape end section 1d of the other side is coupled with a second cable protection conduit 4 (conduit buried to the underground) via a joint 3. To the conduit buried to the underground 4, a plurality of plastic first cable protection conduit 6 allowing insertion of a wire or the like are accommodated. The first cable protection conduit 6 is respectively engaged and inserted into a duct sleeve 7 attached to the wide wall 2 via the cable accommodating section 1a and is then accommodated in the other conduit 4 buries to the underground coupled with the side surface in the opposite side of the manhole box 2.