1. Please provide updates on new NBC initiatives that are currently in process or are. scheduled. We are particularly interested in: the processing of stand-alone Forms I-. 130; the processing of interview-waiver eligible Forms I-485 and work allocations.
Shoring (Shoring System): a structure that is built or put in place to support the sides of an excavation and designed to prevent cave-ins. Sides: See Faces. Sloping (Sloping System): sloping the sides of the excavation away from the excavation to protect employees from cave-ins.
Pricing Excavation & Backfill. Excavation & backfill is usually performed by. specialized contractors because the work. requires specialized equipment. Some general contractors may, instead of. subcontracting, perform the work on their. own when they have the equipment or by. renting it. The objective of this chapter is to present. estimating principles of common excavation. activities.