Shoring
Trench boxes, hydraulic props or sheet piling holding excavation walls up where there is no room to batter them back, or the soil will not stand at any angle. The safe method comes from the soil, not from what looks reasonable.
Piping inspection and supervision, explained from scratch
Trench boxes, hydraulic props or sheet piling holding excavation walls up where there is no room to batter them back, or the soil will not stand at any angle. The safe method comes from the soil, not from what looks reasonable.