| Designator | SSF21a |
| System Type | Fracturing/Frangible (F) |
| Test Specification | NCHRP Report 350 |
| Test Level | TL-3 |
| Drawing Status | Review Complete |
| Maximum Legs/7ft | 1 |
| Contact | Federal Highway Administration |
| Manufacturer | Non-Proprietary |
| FHWA Eligibility Letter | ss36.pdf |
| Components | |
| Drawings | SSF21a.pdf |
| Other Docs | |
| Archive | |
| External Links |
Direct Burial Circular Wood Post
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