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Lagging boards shall be installed as the excavation proceeds to limit soil loss. In no case shall excavation proceed more than 2 feet (609.6 mm) below the lowest installed lagging board. At completion of pit excavation, the pit shall be fully lagged.

Related Code Sections

303.7 General Regulations, Pit Locations
Appliances installed in pits or excavations shall not come in direct contact with the surrounding soil. The sides of the pit or excavation shall ...
303.7 General Regulations, Pit Locations
Appliances installed in pits or excavations shall not come in direct contact with the surrounding soil. The sides of the pit or excavation shall ...
303.7 General Regulations, Pit Locations
Appliances installed in pits or excavations shall not come in direct contact with the surrounding soil. The sides of the pit or excavation shall ...
303.7 General Regulations, Pit Locations
Appliances installed in pits or excavations shall not come in direct contact with the surrounding soil. The sides of the pit or excavation shall ...