Classification Details
| NMFC | Description | Class |
|---|---|---|
| 51170.00 | Manholes, steel, 10 gauge or thicker, with vents, access hatch ways and interior equipment such as piping, ladders and valves | 100 |
How to Determine Your Class
To find the correct freight class for your shipment:
- Secure to wide skids with welded saddles or heavy straps, keeping the access hatch vertical; protect protruding vents with bracing and capped guards.
- Cap or blank all pipe connections and vent stacks to prevent contamination; tag internal ladders and valves as “do not lift” points to avoid damage.
- Note Class 100 on the BOL as NMFC 51170; list overall footprint and highest point at the hatch to plan liftgate, crane, or rooftop delivery.
- Use fork‑friendly pick points or lifting lugs; center weight over stringers and block the shell to stop rolling during LTL linehaul.
Note: All classifications are subject to Item 170. Verify with official NMFC publications for the most current requirements.
Business Value
- Fixed Class 100 simplifies quoting across carriers and reduces reclass fees on bulky fabricated steel.
- Clear NMFC 51170 on paperwork speeds claims resolution and minimizes OS&D caused by unprotected vents or hatches.
- Proper skidding and crating lowers accessorials by avoiding special handling, while preventing costly jobsite delays.
- Standardized prep (caps, braces, labels) preserves high‑value internals like valves and ladders, decreasing replacement spend.