Architectural · A-PDGFY

Blindside Lagging Wall Waterproofing Assembly

Materials

Concrete Steel Timber / Wood Masonry / CMU Metal (misc.)EIFS / Plaster / Stucco

Elements

Beams Walls Retaining Walls Floors / Slabs Foundations / Footings Waterproofing / Flashing Millwork / Casework Reinforcing Roof / Floor Openings

About this detail

A blindside lagging wall waterproofing assembly features steel soldier piles with timber lagging. Cement board is placed over the soldier piles, followed by slurry fill to prevent movement, with voids greater than one inch repaired using non-shrink grout and minimum twenty-four gauge sheet metal or exterior plywood. The waterproofing system incorporates Paraseal GM/LG membranes with seams overlapped four inches minimum, taped with Para JT tape, and covered with three-inch Parastick N Dry tape with Paraprimer. A Superstop waterstop is detailed at all cold joints, alongside Tremdrain drainage mat applied above the watertable. Tie-backs penetrate the wall assembly as required by the structural design.

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