摘要:
An auxiliary drain line is laid in a trench which extends about lower foundation portions of an existing building but at locations preferably spaced several feet from the foundation. The newly laid auxiliary drain line is formed of perforate material which admits surrounding ground water, and is connected to a storm drain line that serves the building so that water which enters the auxiliary drain line is discharged into the storm drain line. A porous reservoir is formed in the trench to (1) duct ground water to the auxiliary drain line, (2) eliminate ground water pressure buildup in the vicinity of the foundation wall, and (3) provide a ground water reservoir during an excessively heavy rainfall when the storm drain line may be incapable of carrying away all of the accumulated waterfall. The auxiliary drain line is laid in the trench at a level below the top of the basement floor of the building. In the event the storm drain line is found to be positioned too high to permit the auxiliary drain line to discharge into it properly, (1) a manhole is constructed, (2) the auxiliary drain line is connected to discharge into the manhole, and (3) a sump pump is provided in the manhole for transferring water from the manhole to the storm drain line. Branch lines may be installed in short underground tunnels to connect the new auxiliary drain line with an existing footer drain line system which surrounds the foundation of the building. The building's downspouts may be rerouted to the auxiliary drain line as needed to bypass clogged storm drain line sections. The building's downspouts are preferably provided with specially configured leaf traps which may be cleaned out at ground level.
摘要:
A method of overcoming the problem of water seeping into the basement of a dwelling or other structure includes procedures for treating a hollow basement wall and for treating the footer drainage tile system which extends perimetrically around the basement wall footer. Wall treatment is effected by pumping a hardenable filler material, in fluid form, into the hollow wall to fill and seal the hollow wall portions as the filler material hardens. The filler material also operates to fill and seal cracks formed in the outer surface of the wall. Drainage tile system treatment is effected by digging a plurality of holes at spaced locations around the perimeter of the basement wall to expose portions of the footer drainage tile system at these locations, by removing portions of the footer drainage tile system at the locations of the holes, by cleaning the interior of the footer drainage tile system, and by reconstructing the removed portions of the footer drainage tile system to provide each of the reconstructed portions with a clean-out branch having a near-ground-level access. Open upper ends of the clean-out branches are capped with novel removable cover structures. Lower regions of the holes are filled with porous particulate material to provide reservoirs for receiving and temporarily retaining water. If the footer drain tile are found to be laid at an unduly high level with respect to the basement floor, selected ones of these tile nearest the main drain conduit are replaced at a lower level and are surrounded by a bed of porous particulate material to provide a reservoir for receiving and temporarily retaining water. In some instances, a sump, a sump pump and/or a backflow prevention system may be added to improve operation of the footer drainage tile system.
摘要:
Abnormal flow of liquid in a non-pressurized conduit such as a drain line of a building is detected by a liquid level sensor unit connected at a conduit location not anticipated to fill with liquid during normal flow, so that liquid backing up at such location will enter a sensor chamber of the unit to cause a liquid level sensor to signal an indicator. A monitoring system uses at least one such sensor to signal at least one local or remote indicator that indicates which sensor has detected abnormal flow. The system can monitor for short times particular drain lines suspected of experiencing abnormal flow, or can serve on a long-term basis to provide an early warning of clogging and blockage in lines selected for monitoring. Each sensor unit preferably uses a small liquid level sensor connected centrally to a mounting member that defines an annular, circumferentially extending mounting flange that can be releasably clamped in place adjacent an end region of a length of conventional pipe that is used to define the sensor chamber of the unit, to thereby provide a simple and inexpensive, easily installed and easily serviced sensor unit that can optionally house a battery and light to provide a local indication of sensed abnormal flow.
摘要:
A method for alleviating seepage of water through the foundation and/or into the basement of a building includes procedures for digging a trench along an exterior wall of the building's foundation, treating the exposed exterior wall surface to diminish its water permeability, providing a properly configured footer drain tile system for ducting water away from the footer of the foundation wall, and carefully filling the trench with an arrangement of selected materials that perform in a synergistic manner to achieve a desired combination of objectives. The footer drain tile system is positioned in the trench at a level below the top of the basement floor of the building. The materials used to fill the trench include a tiered arrangement of gradated stones, clay and topsoil. The stones define a porous reservoir and are arranged in a gradation of sizes, with the largest stones in lower portions of the trench and adjacent the footer drain tile. The top of the porous reservoir of gradated stone is capped by a densely packed layer of relatively impervious material such as clay. The sloped layer of clay is capped by a relatively porous fill of topsoil that also serves to close upper portions of the trench.