# 255.111 Design factor (F) for steel pipe. **Citation:** 16 NYCRR 255.111 **Type / status:** regulation / current **Agency:** New York State Public Service Commission **Effective:** Not stated **Published:** Not stated Transmission and Distribution of Gas. (a) Except as otherwise provided in subdivisions (b), (c) and (d) of this section, the design factor to be used in the design formula in section 255.105 of this Part 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 form ## Document text (a) Except as otherwise provided in subdivisions (b), (c) and (d) of this section, the design factor to be used in the design formula in section 255.105 of this Part 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 section 255.105 of this Part for steel pipe in Class 1 locations that: (1) crosses, without a casing, the right-of-way of an unimproved public road; (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 section 255.105 of this Part 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 section 255.105 of this Part 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. ## Provenance - Official: Yes - Source: - Source ID: `ny-dps-nycrr` - SHA-256: `eb22663dc0a1a090bc6ac29c535159e33e8ebcb622e39d20c9011d6512ba8fec` - Retrieved: 2026-08-12T06:20:40.894Z - Exported: 2026-08-22T22:06:26.681Z - Document slug: `ny-nycrr-255-111` ### Source metadata ```json { "jurisdiction": "US-NY", "title": 16, "part": "255", "partTitle": "Transmission and Distribution of Gas", "scopeKind": "gas-pipeline-safety", "tocPath": [ "Part 255 Transmission and Distribution of Gas", "Pipe Design" ], "legalScope": "Complete current terminal legal unit exposed by the DPS-designated Title 16 NYCRR pipeline-safety part inventory.", "applicabilityCaveat": "Applicability depends on the part and section, Commission jurisdiction, commodity and facility type, intrastate or interstate status, operator and activity, exemptions, waivers, federal preemption, Commission orders, and incorporated law. DPS inspects portions of interstate systems for PHMSA, but PHMSA retains federal enforcement authority. DPS states that all jurisdictional Part 256 gas-holder and Part 257 LPG-plant facilities have been decommissioned even though those regulations remain unrepealed.", "incorporationCaveat": "These parts incorporate or rely on federal pipeline regulations, federal and New York statutes, Commission rules and orders, and privately authored technical standards. Part 10 supplies incorporation details. References metadata preserves explicit citations but does not reproduce external material, determine licensing rights, or decide whether a particular incorporation is static or dynamic.", "publicationCaveat": "The New York Department of Public Service identifies these eleven Title 16 NYCRR parts as its state pipeline-safety regulations and links to the public DOS/Westlaw NYCRR reading copy. That site labels the online text unofficial and directs users needing evidentiary accuracy to the Official NYCRR maintained by the Department of State Division of Administrative Rules. Each section's 'Current through' date is the most recent official NYCRR supplement covering that section, not a uniform corpus-wide amendment date.", "rights": "New York government-edict text is preserved with DPS, Department of State, and publisher attribution. The public reading site's presentation and enhancements, agency marks, forms, annotations, and incorporated federal or privately authored standards require separate rights review; this connector does not claim rights in those materials.", "rightsReviewRequired": true, "currentThrough": "2024-05-31", "historyEvents": "No event is emitted because the section reading copy does not supply an explicit adoption, filing, or effective-date history.", "publisherCitation": "16 CRR-NY 255.111", "identityAnomaly": null, "references": [ { "citation": "16 NYCRR 255.105", "referenceType": "new-york-administrative-code", "url": "https://govt.westlaw.com/nycrr/Document/I505c6fd7cd1711dda432a117e6e0f345?viewType=FullText&originationContext=documenttoc&transitionType=CategoryPageItem&contextData=(sc.Default)" } ], "region": "NY" } ```