Weep holes in retaining wall pdf

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Weep holes are provided at the bottom of the retaining wall to reduce its uplift pressure and provide safety to the structure. Weep holes are usually found in the compound wall of the outside. Weep holes can also be found in the walls of cavities and on windows and doors as needed. They are done at short intervals to protect them from moisture. Gravel Backfill. Backfill simply refers to the soil directly behind the wall. For proper drainage, the first 12 inches of space behind a retaining wall should be filled with crushed stone or gravel. This is so that when water gets into the space, it does not become bogged down in soil but instead can flow down the wall to the drains or weep holes. Item Reinforcement for Retaining Wall Supplying, fitting and placing un-coated Mild steel reinforcement complete in foundation as per drawing and technical weep holes Total in Rs. 234.00 27427 DEDUCTION,M10,M20 M10, Back fill Back filling behind the facing element in Weep holes shall be provided in solid plain concrete/reinforced concrete, brick/stone masonry, abutment, wing wall and return walls as shown on the drawing or directed by the Engineer to drive moisture from the back filling. Weep holes shall be provided with 100 mm dia AC pipe structures in plain/reinforced concrete or brick masonry. Retaining walls are a necessary piece of construction in parts of the world where extreme weather can lead to heavy erosion.. One of the key features of a quality retaining wall is the use of weep holes. This enables water to escape from behind the wall and protects the foundation of the wall from erosion.