Understanding ASME and OSHA Lifting Standards: A Buyer’s Guide

ASME and OSHA both govern lifting equipment in North America — but they are not the same kind of thing, and not every standard applies to every product. ASME publishes voluntary consensus standards that define how equipment should be designed, built, and operated. OSHA is a federal regulator that makes much of that practice enforceable in the workplace. A buyer evaluating a gantry crane, a davit crane, or a lifting beam should understand which standards apply to which product — because the most common error in lifting-equipment marketing is citing a standard that does not govern the product at all.

This guide explains the framework: the ASME B30 series, ASME BTH-1, the role OSHA plays, the Canadian (CSA) equivalents, and — most usefully — which standards genuinely apply to each category of portable lifting equipment.

ASME vs. OSHA: two different things

These two get conflated constantly. They are not interchangeable.

ASME (the American Society of Mechanical Engineers) publishes voluntary consensus standards. The B30 series — “Safety Standards for Cableways, Cranes, Derricks, Hoists, Hooks, Jacks, and Slings” — and ASME BTH-1 are engineering documents. They tell a manufacturer how to design, build, mark, inspect, test, and operate equipment. On their own, they are not law.

OSHA (the Occupational Safety and Health Administration) is a US federal regulator. OSHA regulations are law. And OSHA’s crane and rigging regulations repeatedly reference the ASME B30 standards as the accepted engineering practice — which is how a “voluntary” ASME standard becomes, in effect, mandatory on a real jobsite.

The practical takeaway: a manufacturer designs equipment to ASME standards; an employer operates it under OSHA regulations. A credible manufacturer addresses both.

The ASME B30 series — safety standards by equipment type

The B30 series is split into volumes, each scoped to a specific type of equipment. Three volumes matter for portable lifting equipment:

  • ASME B30.17 — Cranes and Monorails. Carries the most comprehensive single-girder crane provisions in the B30 series — the volume that scopes a portable, top-running, single-girder aluminum gantry crane.
  • ASME B30.2 — Overhead and Gantry Cranes. Covers permanent top-running overhead bridge cranes running on dual elevated runway girders — not portable single-beam gantries.
  • ASME B30.20 — Below-the-Hook Lifting Devices. The safety standard for lifting beams, spreader bars, C-hooks, and similar devices — equipment that hangs from a crane’s hook and attaches to the load.

Three more volumes govern rigging components used alongside any crane: B30.9 (slings), B30.10 (hooks), and B30.26 (rigging hardware — shackles, rings, turnbuckles).

A portable, top-running, single-girder aluminum gantry crane is covered by the comprehensive single-girder crane provisions of B30.17 — the volume manufacturers design this equipment to.

ASME BTH-1 — the design standard for below-the-hook devices

ASME BTH-1, “Design of Below-the-Hook Lifting Devices,” is a design standard, not a safety/operation standard. It tells an engineer how to structurally design a lifting beam or spreader bar: design categories, service classes, allowable stresses, design factors.

BTH-1 pairs with B30.20 — BTH-1 says how to design the device, B30.20 says how to mark, inspect, test, and operate it. Together they govern below-the-hook lifting devices.

This is the distinction that gets misused. ASME BTH-1 applies to a below-the-hook lifting device — a lifting beam, a spreader bar, a C-hook. It does not apply to a crane. A gantry crane or a davit crane is the lifting machine; it is not a below-the-hook device. Citing “ASME BTH-1” on a gantry-crane spec sheet is a category error. BTH-1 is the right standard for a lifting beam — and the wrong standard for the crane that lifts it.

Which standard applies to which product

This is the part worth getting right. Each product category is governed by a specific set of standards:

ProductASMECSA (Canada)
Portable gantry craneB30.17 (crane safety)B167 · S157 · W47.2
Davit crane (jib-type)Jib-type crane — design factor on yield stress well in excess of the proof-test loadB167 · S157 · W47.2
Lifting beam / spreader bar (below-the-hook)BTH-1 (design) + B30.20 (safety)S157

A gantry crane and a davit crane are cranes — governed by the crane standards. A lifting beam is a below-the-hook device — governed by BTH-1 and B30.20. If a single jobsite uses a gantry crane to hoist a load through a lifting beam, all of the above are in play at once — but each standard governs only the piece of equipment it is scoped to.

eme’s own equipment follows exactly this mapping: gantry cranes are designed to ASME B30.17; davit cranes are jib-type cranes engineered with a design factor on yield stress well in excess of the proof-test load; the Eagle Beam lifting beam is designed to ASME BTH-1 (Category B, 3:1 design factor) and operated under B30.20.

OSHA’s role

OSHA does not design equipment — it regulates the workplace where the equipment is used. Two OSHA regulations are most relevant:

  • OSHA 29 CFR 1910.179 — “Overhead and Gantry Cranes.” General-industry workplace safety requirements for overhead and gantry cranes. It references ASME B30 practice for inspection, testing, and load rating.
  • OSHA 29 CFR 1926.251 — “Rigging Equipment for Material Handling.” Construction-industry requirements covering slings, rigging hardware, and below-the-hook devices.

OSHA is what makes the ASME practices enforceable. When a safety auditor, an insurer, or a jobsite compliance officer asks whether a crane “meets code,” they are usually asking whether it was designed to the relevant ASME standard and whether it is being operated, inspected, and load-tested the way OSHA — citing ASME — requires.

Customer and employer responsibilities under OSHA

A manufacturer designs and builds the crane; OSHA places a separate, ongoing set of obligations on the employer who puts it to work. Buyers should understand this compliance landscape, because it does not transfer with the equipment — it belongs to whoever operates the crane on the jobsite.

  • Operator competency. OSHA 1910.179(b)(8) requires the employer to assign only designated, qualified personnel to operate overhead and gantry cranes in general industry.
  • Operator certification (construction). OSHA 1926.1427 requires certified crane operators for cranes with a rated capacity over 2,000 lb used in construction work.
  • Periodic inspection. OSHA 1910.179(j) (general industry) and 1926.1412 (construction) put a daily, monthly, and periodic inspection schedule on the employer — not the manufacturer.
  • Recordkeeping. Monthly inspection records for hooks, chains, and running rope are the employer’s responsibility to create and retain.
  • Lockout/tagout. OSHA 1910.147 governs the control of hazardous energy during maintenance and repair of the crane.
  • Below-the-hook devices. OSHA has no standard written specifically for below-the-hook lifting devices, so the General Duty Clause, §5(a)(1) of the OSH Act, applies — the employer must keep the workplace free of recognized hazards.

These are the customer’s compliance obligations once the crane is in service. They are distinct from eme’s manufacturer-side responsibilities — load marking under OSHA 1910.179(b)(5) and the 125% pre-shipment proof test under OSHA 1910.179(k)(2) — which remain with eme regardless of who operates the equipment.

The Canadian standards (CSA)

Equipment sold or used in Canada is held to the CSA framework, which runs parallel to ASME and OSHA:

  • CSA B167 — the Canadian standard for overhead cranes, gantry cranes, monorails, hoists, and hooks.
  • CSA S157 — the Canadian design standard for structural aluminum. It governs the structural design of any aluminum lifting equipment.
  • CSA W47.2 — the Canadian Welding Bureau’s third-party certification for companies that perform fusion welding of aluminum.

CSA W47.2 is worth singling out, because it is the one item in this entire framework that is a genuine third-party certification — see below.

”Designed to” vs. “Certified to” — the language that matters

This distinction is precise, and it is often abused in marketing.

The ASME B30 standards and ASME BTH-1 are design and safety standards. There is no independent body that inspects a gantry crane and issues an “ASME B30.17 certification.” A manufacturer designs and builds to the standard; compliance is demonstrated through engineer-stamped drawings, load-test records, and operator documentation. The honest phrasing is “engineered to applicable ASME requirements” — not “ASME certified.”

The word “certified” belongs to true third-party certifications issued by an independent authority. In the portable aluminum lifting category, that means:

  • CSA W47.2 — the welding certification, audited and issued by the Canadian Welding Bureau.
  • The Certificate of Test — the load-test document that ships with each rated unit, recording the actual proof-load result.

If a manufacturer claims its crane is “ASME certified” or “OSHA certified,” treat the claim with skepticism — neither of those certifications exists. What exists is equipment designed to ASME standards, operated under OSHA regulations, and welded under CSA W47.2 certification.

What documentation a buyer should ask for

A manufacturer that genuinely builds to these standards can produce documentation. Before purchase, ask for:

  1. Engineer-stamped structural drawings — evidence the design was reviewed by a licensed engineer.
  2. A Certificate of Test — the load-test record. OSHA 1910.179(k)(2) caps the rated-load test at 125% unless the manufacturer recommends otherwise. eme completes that 125% proof-load test on every unit, on a load cell before shipment, as part of its own quality-control process — so a documented pre-service proof test is already done when the crane arrives.
  3. The applicable standard editions — which ASME (and, for Canada, CSA) editions the equipment was designed to.
  4. The operator’s manual — inspection, testing, and operating procedures aligned to the relevant standard.

If a manufacturer cannot produce these, the compliance claim is unverified — regardless of which standards are printed in the brochure.

Frequently asked questions

Is ASME B30 the law?

No. The ASME B30 standards are voluntary consensus standards. They become effectively mandatory because OSHA regulations (and Canadian provincial regulations) reference them as accepted engineering practice, and because jobsites, insurers, and safety audits require compliance with them.

What is the difference between ASME and OSHA?

ASME publishes engineering standards that tell a manufacturer how to design and build equipment. OSHA is a federal regulator whose rules tell an employer how to operate it safely in the workplace. OSHA references ASME standards, which links the two.

Does a gantry crane need to meet ASME BTH-1?

No. ASME BTH-1 is the design standard for below-the-hook lifting devices — lifting beams, spreader bars, C-hooks. A gantry crane is a crane, not a below-the-hook device; it is governed by the crane standard (ASME B30.17). BTH-1 would apply to a lifting beam used with the crane — not to the crane itself.

What standards apply to a davit crane?

A davit crane is a jib-type crane. eme engineers its davit cranes with a design factor on yield stress well in excess of the proof-test load — almost all eme gantry and davit designs are additionally qualified by a 150% proof-load test, with meaningful margin remaining before yield — and, in Canada, to CSA B167, with structural design to CSA S157 and structural welds produced under CSA W47.2 certification by qualified aluminum welders. It is not a below-the-hook device, so ASME B30.20 and BTH-1 do not apply to it.

Is “ASME certified” a real thing?

No. ASME publishes design and safety standards; it does not run a third-party certification program for cranes or lifting beams. Equipment is designed to ASME standards. The only genuine third-party certification commonly applied in this category is CSA W47.2, the Canadian Welding Bureau’s aluminum welding certification.

How do I verify a manufacturer’s compliance claim?

Request the documentation: engineer-stamped drawings, a Certificate of Test showing the proof-load result, the operator’s manual, and the standard editions the equipment was designed to. A manufacturer that builds to the standards will have these on file; one that cannot produce them is making an unverified claim.

Every eme crane and lifting beam is engineered to the standards that apply to its category:

Spec sheets for every model are available as ungated PDF downloads on each product page.

Last reviewed May 2026. Reviewed by eme engineering for technical accuracy. ASME standards are published by the American Society of Mechanical Engineers (asme.org); OSHA regulations by the US Department of Labor (osha.gov); CSA standards by the CSA Group (csagroup.org). Those bodies are the authoritative sources.