Soldier Pile Wall With Concrete Lagging

As excavation progresses in stages horizontal lagging in the form of timber or precast concrete is added behind the flanges to create the soldier pile and lagging wall.

Soldier pile wall with concrete lagging.

Soldier pile walls have successfully being used since the late 18th century in metropolitan cities like new york berlin and london. Additionally contact lagging or shotcrete may be applied. This lagging can consist of metal decking rough sawn timber or precast concrete or sculpted shotcrete. Wood lagging sometimes steel or concrete panels is placed between the soldier piles as excavation.

Soldier piles beams and lagging is an excavation support technique where vertical piles most commonly steel piles either driven or lowered into a drilled excavation and grouted are at regular intervals along the proposed wall location. Lagging consisting of wood steel or precast concrete panels is inserted behind the front pile flanges as the excavation continues. Soldier pile retaining walls solider pile retaining walls and precast lagging panel systems are diverse and uniquely designed to suit a variety of situations addressing both the permanent and temporary earth retention and shoring requirements of your project. Soldier pile and lagging walls commonly known as soldier piles are some of the oldest forms of retaining wall systems used in deep excavations.

The former is either forced into the ground to an adequate depth or installed into holes which are drilled in advance then encased in lean concrete to oppose or withstand the moment exerted by soil and the spacing is commonly between 1 8 m to 2 45 m. Soldier piles are steel h piles that are vertically driven or drilled into the earth at regular intervals prior to excavation. The geotechnical services branch will specify when lagging shall be designed for an additional 250 psf surcharge due to temporary construction load and which shall also be shown. The lagging efficiently resists the load of the retained soil and transfers it to the piles.

Place the panel between the flanges of the soldier piles and bearing against the flanges on the exposed side of the wall so that the soldier pile flange overlaps the end of the lagging by at least one inch more than the concrete cover over the reinforcing steel at both ends of the lagging.