Aggregate Specifications

NHDOT Specification Cross References

Many of our aggregate materials are manufactured and tested to meet New Hampshire Department of Transportation (NHDOT) Standard Specifications for Road and Bridge Construction. The following are cross references for materials we most often stock.

NHDOT Section 304 – Aggregate Base Course

  • Crushed Gravel – Meets NHDOT 304.3
  • Bank Run Gravel – Meets NHDOT 304.2 and 305.5
  • Screen Sand – Meets NHDOT 304.1
  • 1-1/2″ Dense Ledge Gravel – Meets NHDOT 304.4
  • 2″ Dense Ledge – Meets NHDOT 304.4

NHDOT  Section 583 – RIPRAP

  • Rip-Rap – Meets NHDOT Class A & B (583.1 and 583.2)
  • Erosion Stone – Meets NHDOT Class C (583.3)

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