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.
5 Mar 03 17:04. Yes there will be a problem! The purpose of a french drain is to hold runoff and allow it to percolate into the surrounding soil. When sizing a french drain you calculate the available storage using both the pipe and the voids in the gravel. If you eliminate the gravel, the system will not hold or percolate that same amount of water. If you were in sandy soil the difference would not be so great, but clay has a very low percolation rate.