Glossary |
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| Term | Definition |
| Backfill | Material used to fill in an excavation. |
| Bleeders | Concrete, clay or plastic pipe that is installed through the footing or foundation wall to allow transfer of water from the exterior drain tile to the interior drain tile. |
| Concrete block | Concrete masonry unit used in basement wall construction. Concrete block is commonly used in nominal 8", 10" or 12" widths and is typically 8" tall by 16" long with 2 open cells in the block. The concrete blocks are stacked with alternating vertical joints using mortar between the joints to hold the block together. |
| Downspout | Aluminum or galvanized steel pipe that directs water collected in the rain gutters down to the ground and away from the building |
| Drain tile | Concrete or plastic perforated pipe used underground to collect water and direct it to the sump crock |
| Efflorescence | White mineral deposits showing on face of masonry due to water leaching through the masonry to the dry surface. Scale stains |
| Epoxy | Material used to repair cracks in concrete or masonry. Epoxy is a material that can be injected into wall cracks and when cured forms a very strong bond with the base material. |
| Grade | Reference to the pitch of the exterior ground surface adjacent to the building. |
| Palmer Valve | Stormwater discharge valve typically located in the side wall of the floor drain, designed to prevent backflow of sanitary sewer into stormwater system. |
| Pilaster | A projection of masonry or a filled cell area of masonry for the purpose of bearing concentrated loads or to stiffen the wall against lateral forces. |
| Seepage | Water infiltration through masonry walls or floor slab. Seepage is evidenced by damp or wet masonry walls or concrete floor or signs of efflorescence. It is an indication that the basement drainage system is overloaded or not functioning correctly. |