Where underpinning is chosen to provide the protection or support of adjacent structures, the underpinning system shall be designed and installed in accordance with provisions of this chapter and Chapter 33.

Where geotechnical investigations are required, a written report of the investigations shall be submitted to the building official by the permit applicant at the time of permit application.

Soil classification shall be based on observation and any necessary tests of the materials disclosed by borings, test pits or other subsurface exploration made in appropriate locations.

This section implies that backfill material shall be in accordance with code requirements.

This section implies that all drains located at the site—floor drains and perimeter drains—must properly discharge.

This section provides the requirements for foundation drain placement. The section is precise in the requirements and provides a basis for design.

This section implies that a base course a minimum of 4 inches thick is required under all basement floors.

Where a hydrostatic pressure condition does not exist, dammproofing shall be provided and a base shall be installed under the floor and a drain installed around the foundation perimeter.

This section implies that all wall and floor joints must be properly waterproofed.

This section implies that the wall substrate must be properly prepared to receive waterproofing materials.