Laserfiche WebLink
21 - Repair Leaks Manhole Cone Joints <br />The precast joint between the cone and wall has deteriorated or is leaking. This <br />rehabilitation method addresses removal of the deteriorated sealing material and <br />replacement with non-shrink grout or other sealant. This repair may also include <br />the use of chemical gel sealants injected through the wall to effect a seal from the <br />outside. <br />22 - Repair Leaks Manhole Cone Wall <br />In lieu of the plastering techniques described in rehabilitation method 18, each <br />defect may be individually repaired through use of non-shrink or flexible sealing <br />products. <br />23 - Form and Pour New Manhole Wall <br />The manhole wall has deteriorated to the extent that structural failure is <br />imminent, and replacement is desirable. There are instances, however, where <br />adverse physical or traffic conditions make replacement difficult. In such cases, a <br />solution can be to remove the frame, place a liner in the manhole, and pour <br />concrete in the annular space between the liner and the wall. <br />24 - Plug and Waterproof Coat Manhole Wall <br />Various defects can develop in walls, permitting inflow through cracked or <br />missing mortar, holes, and defective or missing bricks. This rehabilitation method <br />consists of cleaning the walls, repairing holes and cracks, and applying cement <br />based grout in multiple layers. <br />25 - Plug Lift Holes Precast Manhole Sections <br />The sealant material used to seal the precast lift holes has deteriorated or is <br />leaking. This rehabilitation method addresses removal of the deteriorated sealing <br />material and replacement with non-shrink grout or other sealant. <br />ADS Environmental Services, Inc. <br />VI-13 <br />