The primary function of bibliographic citations is to assist the reader in finding the sources used in the writing of a work. To these basic citations, the annotated bibliography adds descriptive and evaluative comments (i.e., an annotation), assessing the nature and value of the cited works. The addition of commentary provides the future reader or researcher essential critical information and a foundation for further research.
French drain. A French drain or weeping tile (also blind drain, rubble drain, rock drain, drain tile, perimeter drain, land drain, French ditch, sub-surface drain, sub-soil drain or agricultural drain) is a trench filled with gravel or rock or containing a perforated pipe that redirects surface water and groundwater away from an area.
French drain: Estimate $20.00 to $30.00 per linear foot. Where water stands in a swale or elsewhere, a French drain can be installed beneath the flow line to provide a clean avenue for the water to percolate deeper underground so the surface soil can dry out.very residential drainage project is unique because every homesite presents a different constellation of challenges. The way these problems are solved relates to the scale of the project, the kind of system proposed, preexisting site conditions, and all of these impact cost.