POLYMER CONTAINER Russian patent published in 2001 - IPC

FIELD: construction engineering; construction engineering; erection of pipe lines. SUBSTANCE: polymer container is provided with locking bands to exclude change in its shape after bringing it to working position; reservoirs are trapezoidal in shape; their walls adjoining the pipe line walls are connected with stiffening members located along pipe line at level of its horizontal axis; length of walls of reservoirs resting against slopes of trench provides for overlapping filling soil at the top; their upper edges are connected with additional stiffening members by means of upper cargo members which are located at distance from each other exceeding diameter of pipe line. EFFECT: enhanced reliability of ballasting; reduced usage of material; low cost. 3 cl, 1 dwg