What is ASME B30.17?

ASME B30.17 is the North American safety standard for cranes and monorails with an underhung trolley or bridge. It is issued and maintained by the American Society of Mechanical Engineers (ASME) as part of the B30 series on cableways, cranes, derricks, hoists, hooks, jacks, and slings. The standard establishes requirements for design, construction, installation, operation, inspection, testing, and maintenance of equipment in its scope. Its comprehensive single-girder crane provisions make it one of the standards relevant to portable aluminum gantry cranes.

eme designs its portable, top-running, single-girder aluminum gantry cranes to ASME B30.17, whose comprehensive single-girder crane provisions cover the structural, operational, and inspection requirements for this equipment. Manufacturers that design to the standard — including eme — build their equipment to the requirements it sets out.

What ASME B30.17 covers

The full title is “Cranes and Monorails (With Underhung Trolley or Bridge).” The standard applies to:

  • Underhung cranes (single-girder and multiple-girder)
  • Top-running cranes with an underhung trolley
  • Monorail systems

B30.17’s comprehensive single-girder crane provisions are directly relevant to portable aluminum gantry cranes. eme designs its gantry cranes to B30.17.

eme’s portable aluminum gantry cranes are top-running, single-girder, box-beam cranes — the surround-beam trolley rides on top of the box beam, not below a bottom flange. For that configuration, eme builds to the relevant provisions of ASME B30.17.

What B30.17 requires

ASME B30.17 specifies requirements across the full lifecycle of the equipment. The main categories:

Design and construction

  • Structural design that meets load requirements with an appropriate design factor (typically 3:1 for rated load, per ASME BTH-1 where below-the-hook devices are in scope)
  • Rated capacity clearly marked on the equipment
  • Proper bearings, wheels, brakes, and load-carrying components specified for the service class
  • Electrical systems (for powered hoists) compliant with applicable electrical codes
  • Emergency stop and controlled-stopping mechanisms where applicable

Marking and documentation

  • Rated capacity marked on the equipment
  • Manufacturer identification
  • Instruction manual provided with the equipment
  • Inspection records maintained by the owner
  • Load test documentation when required

Operation

  • Operator qualification and training requirements
  • Pre-use inspection procedures
  • Operating practices including limits on load swinging, simultaneous operations, and personnel-under-load restrictions
  • Environmental condition requirements (wind speed, temperature ranges, surface conditions)

Inspection and testing

  • Daily or pre-shift visual inspection of critical components
  • Periodic inspection at defined intervals
  • Major load test requirements when equipment is new, after significant repair, or on a periodic schedule
  • Inspection record retention

Maintenance

  • Preventive maintenance schedules
  • Replacement criteria for wear components (wheels, brakes, hooks, wire rope, chain)
  • Inspection and replacement of critical structural elements

”Compliant with” vs. “Certified to”

This distinction matters, and it is often misused in marketing.

ASME B30.17 is a design standard. It is not a third-party certification program. There is no independent body that inspects a portable gantry crane and issues a B30.17 “certification stamp.” Instead:

  • Manufacturers design and build to the standard’s requirements.
  • Compliance is demonstrated through the design documentation, load test records, engineer-stamped drawings, and operator manuals that ship with the product.
  • The end-user verifies compliance through the manufacturer’s published documentation and, where required, through their own load testing and inspection program.

Honest language uses “designed to ASME B30.17” or “ASME B30.17 compliant” — not “ASME B30.17 certified.” The word “certified” is reserved for true third-party certifications issued by an independent authority (for example, CSA W47.2 aluminum welding certification is a third-party certification, issued by the Canadian Welding Bureau).

At eme, every gantry crane is designed to ASME B30.17, load-tested to 125% of rated capacity on a load cell before shipping, and shipped with a Certificate of Test and an engineer-stamped drawing. Almost all eme gantry and davit designs are additionally qualified by a 150% proof-load test — performed once during product approval and documented on the P.Eng-stamped drawing — so the per-unit 125% production test verifies margin already validated at the design level.

How B30.17 relates to other standards

Portable aluminum gantry cranes typically carry multiple overlapping standards. Some are US-market anchors; some are Canadian-market anchors.

United States:

  • ASME B30.17 — crane safety standard with comprehensive single-girder crane provisions; the B30 volume eme designs its gantries to.
  • ASME BTH-1 — design standard for below-the-hook lifting devices (spreader beams, lifting beams, attachments). eme’s Eagle Beam is designed to Category B, 3:1 design factor.
  • OSHA 29 CFR 1910.179 — general-industry workplace safety regulations for overhead and gantry cranes. Manufacturer-side provisions (1910.179(b)(5) load marking, (k)(2) pre-shipment proof-load test) are eme’s responsibility; customer-side provisions (1910.179(b)(8) designated operators, (j) periodic inspection, plus 1926 Subpart CC for construction sites) are the employer’s.

Canada:

  • CSA B167 — Canadian crane safety standard.
  • CSA S157 — Canadian design standard for structural aluminum.
  • CSA W47.2 — Canadian Welding Bureau third-party certification for companies performing fusion welding of aluminum. CSA W47.2 is a Canadian certification, not a US compliance requirement, but it is widely recognized in the US as a quality marker. It is the only genuine third-party certification commonly applied to the portable aluminum gantry category — every other standard in the stack is a design standard with self-declared compliance.

A quality aluminum gantry crane from a Canadian manufacturer addresses all of the above; a US-market-only manufacturer typically addresses the US standards and may or may not seek CSA equivalence.

Why B30.17 compliance matters for buyers

Three reasons a buyer should confirm B30.17 compliance before purchase:

  1. Jurisdictional requirements. Plant safety audits, OSHA inspections, facility insurance policies, and jobsite compliance officers frequently ask for evidence that lifting equipment meets recognized safety standards. B30.17 is the North American benchmark.

  2. Structural integrity and design factor. B30.17 and its references establish the design factor (typically 3:1 for below-the-hook devices per BTH-1) that ensures rated capacity is a genuine safe working load, not a marketing number.

  3. Separation from the pro-sumer tier. Cheap imported and big-box-branded gantry cranes sometimes claim compliance with ASME standards without demonstrating it. Separately from B30.17, OSHA requires a crane to be proof-load tested to 125% of rated capacity before it is placed into service — an obligation on the employer putting the crane to work. Real B30.17-designed equipment comes with engineer-stamped drawings and a Certificate of Test documenting that 125% proof-load test, completed by the manufacturer during production so the employer’s pre-service obligation is already satisfied — and a manufacturer who can produce this documentation on request.

Frequently asked questions

Is ASME B30.17 the same as ASME B30.2?

No. B30.2 covers top-running bridge and gantry cranes with top-running trolley hoists, but the standard’s scope assumes a fixed runway with dedicated rails — permanent installations. It does not apply to portable, caster-mounted gantries like eme’s, which have no runway. eme’s portable aluminum gantries are designed to ASME B30.17 (the closest-scoped B30 volume), with engineering judgment supplied for the portable configuration that the B30 framework doesn’t fully cover. They are separate volumes with different scopes.

Is ASME B30.17 required by law?

ASME B30.17 itself is a voluntary consensus standard, not a law. However, OSHA regulations in the United States (and provincial regulations in Canada) frequently reference ASME B30 series standards as the accepted engineering practice for crane safety. A jurisdiction, employer, insurer, or jobsite may require ASME B30.17 compliance as a condition of operation.

Does ASME B30.17 apply to aluminum gantry cranes?

ASME B30 standards apply based on a crane’s configuration, not its construction material. eme’s portable aluminum gantry cranes are top-running single-girder box-beam cranes designed to ASME B30.17 (comprehensive single-girder provisions), with CSA S157 for structural aluminum applied on top and structural welds produced under CSA W47.2 certification by qualified aluminum welders.

How do I verify that a manufacturer’s crane actually meets ASME B30.17?

Request the documentation. A compliant manufacturer will provide: engineer-stamped structural drawings, a Certificate of Test showing the rated-capacity load test result (often 125% of rated load), the operator’s manual with B30.17-aligned procedures, and the applicable ASME B30.17 edition year the equipment is designed to. If the manufacturer cannot produce this documentation, treat the compliance claim with skepticism.

What is the design factor under ASME B30.17?

B30.17 itself addresses the crane system. For below-the-hook lifting devices attached to the crane (spreader beams, lifting beams, custom attachments), ASME BTH-1 applies — typically Category B for portable applications, with a 3:1 design factor on yield stress for load-carrying members.

Is every eme gantry evaluated against ASME B30.17?

Yes. Every eme aluminum gantry crane — a top-running single-girder box-beam design — is designed to ASME B30.17, load-tested to 125% of rated capacity with a load cell before shipping, and shipped with a Certificate of Test and engineer-stamped drawing. Documentation is included with the equipment; additional copies are available on request.

Every eme crane and lifting beam is engineered to the applicable ASME standards:

Spec sheets for every model, including the ASME standard editions the equipment is evaluated against, are available as ungated PDF downloads on each product page.

Last reviewed April 2026. Content reviewed by eme engineering for technical accuracy. ASME B30.17 is published and maintained by the American Society of Mechanical Engineers; the authoritative source is asme.org.