Apparatus for placement of lateral drain lines onto a main drainage line for prefabricated composite drainage structures

摘要

A geotextile fabric composite sleeve having three interconnected portions so that two of the portions are slidable over the principal drain line, and define a main sleeve portion and the third portion for accommodating a lateral line for defining an auxiliary sleeve portion in fluid communication with the main sleeve portion, the auxiliary sleeve portion projecting out flexible to any angle from the main sleeve portion, with the main sleeve portion position onto the principle drain line at a point so that the opening of the auxiliary sleeve portion into the main sleeve portion is that the window cut into the main sleeve.