Heap up, stack up, pile up - organize into piles or stacks; "She piled up her textbooks in my living room" The casing is frequently embedded 30 cm to the dense layer, ensuring isolation from the overburden. This also will allow grouting with the micropile with out impacting the overburden. https://moodjhomedia.com/story2886735/examine-this-report-on-micropile