Insert new Section 1705.19 in the Building Code to read as follows:
Underpinning. Underpinning of structures shall be subject to special inspections in accordance with Chapter 17. In addition to the special inspection for structural stability, any new foundation elements installed as part of underpinning operations shall be subject to special inspection as a permanent installation in accordance with the applicable sections of Chapter 17, including, but not limited to, special inspections for soil, concrete, welding, sequencing and pile driving.
D.C. Mun. Regs. tit. 12, r. 12-A1705