Laserfiche WebLink
33 - Repair Leaks Manhole Channel <br />A solution to less severe defects in the manhole channel is to apply non-shrink <br />grout or other sealant to the individual defects. <br />34 - Remove Manhole Deposition - Medium <br />This rehabilitation method applies to manholes with one to three inches of debris <br />in the bottom. <br />35 - Remove Manhole Deposition - Heaw <br />This method is used for manholes with over three inches of debris on the bench <br />and channel. <br />36 - Locate Manhole - Raise to Grade <br />The manhole was unable to be located during field inspection activities. The <br />manhole must be located through the use of an internal TV camera or other <br />means, and raised to grade for inspection as detailed in Rehabilitation Code 08. <br />37 - Uncover Manhole - Raise to Crrade <br />The manhole was located during field inspection activities, but was buried and <br />could not be excavated. The manhole must be raised to grade for inspection as <br />detailed in Rehabilitation Code 08. <br />391 - Replace Manhole <br />This method is normally recommended only for manholes with multiple heavy <br />defects. However, it is also used for manholes in older systems with few defects <br />but signs of deterioration. <br />392 - Plug and Waterproof Coat Entire Manhole <br />Rather than plug and coat or patch individual sections of manholes, it may be <br />advantageous to coat the entire manhole, especially in older brick manholes <br />which are deteriorated. The method used involves cleaning the walls, patching <br />holes or cracks, and coating with a waterproofing sealant in multiple applications. <br />ADS Environmental Services, Inc. <br />VI-15 <br />