# Design factor (F) for steel pipe.

**Citation:** 49 CFR 192.111  
**Type / status:** regulation / current  
**Agency:** Pipeline and Hazardous Materials Safety Administration  
**Effective:** 2026-08-18  
**Published:** Not stated

(a) Except as otherwise provided in paragraphs (b), (c), and (d) of this section, the design factor to be used in the design formula in § 192.105 is determined in accordance with the following table:

Class location Design factor (F) 1 0.72 2 0.60 3 0.50 4 0.40

(b) A design factor of 0.60 or less m

## Document text

(a) Except as otherwise provided in paragraphs (b), (c), and (d) of this section, the design factor to be used in the design formula in § 192.105 is determined in accordance with the following table:

Class location Design factor (F) 1 0.72 2 0.60 3 0.50 4 0.40

(b) A design factor of 0.60 or less must be used in the design formula in § 192.105 for steel pipe in Class 1 locations that:

(1) Crosses the right-of-way of an unimproved public road, without a casing;

(2) Crosses without a casing, or makes a parallel encroachment on, the right-of-way of either a hard surfaced road, a highway, a public street, or a railroad;

(3) Is supported by a vehicular, pedestrian, railroad, or pipeline bridge; or

(4) Is used in a fabricated assembly, (including separators, mainline valve assemblies, cross-connections, and river crossing headers) or is used within five pipe diameters in any direction from the last fitting of a fabricated assembly, other than a transition piece or an elbow used in place of a pipe bend which is not associated with a fabricated assembly.

(c) For Class 2 locations, a design factor of 0.50, or less, must be used in the design formula in § 192.105 for uncased steel pipe that crosses the right-of-way of a hard surfaced road, a highway, a public street, or a railroad.

(d) For Class 1 and Class 2 locations, a design factor of 0.50, or less, must be used in the design formula in § 192.105 for—

(1) Steel pipe in a compressor station, regulating station, or measuring station; and

(2) Steel pipe, including a pipe riser, on a platform located offshore or in inland navigable waters.

[35 FR 13257, Aug. 19, 1970, as amended by Amdt. 192-27, 41 FR 34605, Aug. 16, 1976]

## Provenance

- Official: Yes
- Source: <https://www.ecfr.gov/on/2026-08-18/title-49/section-192.111>
- Source ID: `ecfr`
- SHA-256: `c41d2867b242200c80c38c27e47482564f05cd4b4e288d2a143508194b9dbe78`
- Retrieved: 2026-08-20T05:54:34.435Z
- Exported: 2026-08-22T19:52:57.157Z
- Document slug: `49-cfr-192-111`

### Source metadata

```json
{
  "cfrTitle": 49,
  "part": "192",
  "section": "192.111",
  "subpart": "Subpart C—Pipe Design",
  "corpusVersion": "2026-08-18",
  "jurisdiction": "US"
}
```