Adjacent Construction Projects – Methodology for Allowable Support of Excavation Movement

In urban settings, construction sites for new buildings are commonly within dense building zones, with adjacent structures close by. New buildings that feature below-grade spaces require excavations with support of excavation (SOE) systems to retain soils around the site’s perimeter. To limit movement of the SOE system, and thereby minimize the potential for damage to adjacent structures, SOE designers have to select appropriate thresholds for lateral and vertical SOE movement.

This paper discusses common SOE systems used in adjacent construction projects, the risk of damage to adjacent structures from movement of SOE systems, and a methodology for determining a threshold of SOE movement.

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