Project Overview

This project focuses on installing solar photovoltaic (PV) arrays across various municipal facilities in Delhi Charter Township. The arrays include ground-mount, roof-mount, carport, and canopy installations with total DC system sizes ranging from 18.5 kW to 181.5 kW. Canopy and carport structures will utilize shallow concrete foundations, while ground-mounted arrays will be supported by driven steel piles. NTH provided economical foundation designs and construction recommendations to minimize future risks and provide safe construction practices.

The various community facilities included in the project are:

  • Lift Station
  • Treatment Plant Lagoon
  • Maintenance & Public Services
  • Community Services Center
  • Sam Corey Senior Center
  • Farmer’s Market
Project Scope

NTH conducted nine soil borings to a depth of 20 feet at the various site locations. Soil samples were collected and tested in the NTH and subcontractor laboratories for parameters including moisture content, dry density, compressive strength, organic content, and corrosivity. NTH developed geotechnical recommendations for:

  • Site preparation and grading
  • Fill and backfill requirements
  • Foundation designs (ground-mount steel piles, shallow drilled shafts)
  • Axial resistance
  • Lateral resistance
  • Frost depth and impact
  • Temporary excavations and earth support
  • Groundwater control

Axial resistance and lateral loading parameters were tailored for both ground-mounted and carport/canopy solar array foundations.

Project Challenge:

Coordinating multiple site locations with varying subsurface conditions while ensuring timely completion of geotechnical investigations to align with the project timeline.

NTH Solutions:

NTH utilized its geotechnical expertise to deliver reliable and economical foundation designs tailored to the unique requirements of solar installations. Our team executed comprehensive site investigations, laboratory testing, and geotechnical analysis, providing seamless project progress

Client Benefit:

NTH delivered cost-effective, site-specific foundation recommendations that minimized construction risks. Timely completion of services enabled the client to proceed with construction promptly, supporting project schedules and budgets while ensuring long-term structural stability.