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.
The French drain is a simple, yet versatile construction which can be used to drain standing water from problem areas in your yard or basement. The process is fairly simple; it just requires a little preparation and planning, the right tools and materials, and a little DIY know-how.ather your tools and materials. In order to build a French drain, you'll need to stock up on a few basic tools and materials. You will need: 1  A roll of water permeable landscape fabric: this will help to keep your drain pipe clean and avoid clogging by preventing soil, silt and roots from entering the drain.