ACI 318, ACI 332, IBC Chapter 18, IRC R401–R405, ASCE 7 (seismic), manufacturer requirements for helical/push pier systems

• Visual survey and crack mapping of all accessible foundation surfaces.
• Settlement measurement and elevation survey to quantify differential movement.
• Drainage assessment: inspect gutters, downspouts, grading, and perimeter for water management issues.
• Geotechnical coordination: provide soil conditions to EOR for underpinning design.

• Exterior waterproof membrane on foundation walls: spray-applied or self-adhered sheet membrane.
• Drainage board and filter fabric over membrane before backfill.
• Crystalline waterproofing (TREMproof 250GC or equal) as alternative; self-healing.
• Interior drain tile system: perimeter trench, pipe, and sump pit for hydrostatic pressure management.

• Epoxy injection (ASTM C881) for structural cracks in concrete foundations.
• Polyurethane foam injection for active water-infiltration cracks.
• Carbon fiber reinforcement straps for laterally bowed or cracked foundation walls: layout per EOR.

• Helical pile installation (CHANCE or equal): torque-monitored; capacity per EOR.
• Push pier installation: hydraulic ram; bears on competent soil or rock; capacity per EOR.
• Mini-pile / micro-pile: drilled and grouted for high-capacity requirements in poor soil conditions.

• Site regrading: minimum 6" drop in first 10 feet away from foundation.
• Downspout extension: discharge minimum 6 ft from foundation.
• French drain installation: perforated pipe, gravel, filter fabric, discharge to daylight or dry well.