Certification Review Checklist for Lifting Frames and Steel Structures

A certification review checklist helps fabricators, manufacturers, project engineers and site teams prepare the right information before asking an engineer to certify a lifting frame, lifting device or fabricated steel structure. The better the information pack, the faster the engineering review can usually move.

For lifting frames and steel structures, certification is not just a final signature. It is a documented engineering review of the design basis, load path, material assumptions, fabrication quality, weld details, inspection evidence, proof test results and markings for the item being certified.

This guide explains what to include in a certification review checklist for lifting frames, spreader beams, lifting lugs, skid frames, handling frames and fabricated steel structures. It focuses on the Australian Standards commonly relevant to this type of work, including AS 4991 for lifting devices, AS 4100 for steel structures, AS/NZS 5131 for structural steelwork fabrication and erection, AS/NZS 1554 for welding, AS 1418.1 where crane interfaces are relevant, and AS 3990 where mechanical equipment steelwork is the selected design basis.

Why a Certification Review Checklist Matters

Most certification delays do not happen because the engineering is impossible. They happen because important information is missing, unclear or inconsistent.

A fabricator may have built a lifting frame but not recorded the material grade. A manufacturer may know the equipment mass but not the centre of gravity. A site team may have proof load test records but no drawings showing the tested configuration. A project manager may have a certificate for the original frame, but the lifting lugs have since been modified.

Those gaps matter because a certification engineer needs to define exactly what is being certified and what evidence supports that certification.

A proper checklist helps answer questions such as:

• What item is being certified?
• What load is it designed to lift or support?
• What Australian Standards apply?
• What drawings define the item?
• What material grades were used?
• What welds and connections transfer the load?
• Has the fabricated item been inspected?
• Has proof loading been completed where required?
• Do the markings match the certified configuration?
• Has the item been repaired or modified?

The goal is simple: remove uncertainty before it becomes a delay, rejection or safety risk.

Relevant Standards for a Lifting Frame Certification Checklist

Before building a checklist, it helps to understand which standards may drive the information required.

The correct standards depend on the item, the load case, the site requirement and the project specification. Do not assume one standard covers everything.

Certification Review Checklist: What to Prepare First

The checklist below is written for practical use. It can be used before contacting an engineer, before fabrication, before proof testing or before submitting an item to a client or site.

This minimum information may not be enough to complete certification, but it is usually enough for an engineer to identify the next required steps.

Step 1: Define the Certification Scope

The first checklist item is the certification scope. This defines what the engineer is being asked to review.

Scope issues are common. A client may ask for a lifting frame to be certified, but the project team may not know whether that includes the shackles, slings, crane hook, equipment being lifted, proof test arrangement or only the fabricated frame.

Define the scope clearly before the review begins.

Include These Scope Details

• Item name and description
• Item identification number
• Whether the item is new, existing, modified or repaired
• Whether the review is for a lifting frame, lifting beam, spreader beam, skid frame, lifting lug or steel structure
• Whether rigging components are included or excluded
• Whether proof load test review is included
• Whether the certification is for one configuration or multiple configurations
• Whether certification is required for site acceptance, client handover, audit closeout or internal records

Step 2: Confirm the Working Load Limit or Rated Capacity

The Working Load Limit, often shortened to WLL, is one of the most important inputs for lifting frame certification. AS 4991 uses WLL or rated capacity in relation to proof loading and marking requirements.

The WLL should not be guessed after fabrication. It should be supported by engineering assessment, load information, material assumptions, fabrication evidence and, where required, proof testing or alternative verification.

Checklist Items for WLL

• Required WLL or rated capacity
• Units, such as kg or tonnes
• Whether the rating includes the self-weight of the frame
• Whether the rating applies to one lift arrangement or several
• Whether the load is static, dynamic, repeated or unusual
• Whether a lower WLL is acceptable if the existing frame cannot support the requested rating

Where the frame is already marked, provide a photo of the marking plate or tag. The engineer will need to confirm whether the marking matches the certified configuration.

Step 3: Provide Load Data and Centre of Gravity

A certification review cannot be completed properly without understanding the applied load.

For lifting frames, the engineer needs the lifted item mass, the self-weight of the lifting frame, the load distribution and the centre of gravity. The centre of gravity is especially important for multi-point lifts because load sharing is rarely perfect.

Checklist Items for Load Data

• Lifted item mass
• Source of mass information
• Frame self-weight or tare mass
• Mass of any attached equipment included in the lift
• Centre of gravity location in plan
• Centre of gravity height, where relevant
• Whether the load can shift during lifting
• Whether fluids, liners, tooling or accessories are included during the lift

If the centre of gravity is unknown, disclose that early. The engineer may need to make conservative assumptions, request manufacturer information or recommend a different verification method.

Step 4: Document the Lifting Arrangement

The lifting arrangement controls how load enters the frame. A frame lifted vertically through one central point behaves differently from a frame lifted using four angled sling legs.

Sling angle matters because angled slings introduce horizontal force components into lifting lugs, welds and members. The same total load can produce very different forces depending on the lift geometry.

Checklist Items for the Lifting Arrangement

• Number of lifting points
• Lift point coordinates
• Hook point location
• Sling leg lengths
• Sling angle from vertical or included sling angle
• Whether all lifting points are active at once
• Whether a spreader beam or lifting beam is used
• Shackle size and pin diameter
• Hook, sling or rigging interface details
• Lift plan or rigging sketch, if available

For lifting beams and spreader arrangements, the certified sling angle may need to be reflected in the markings or operating instructions.

Step 5: Provide Drawings and Design Records

Drawings are the backbone of a certification review. A photo can help, but it cannot replace a drawing that defines geometry, member sizes, plate thicknesses, welds and connection details.

AS 4100 places importance on design information and construction specification details. AS/NZS 5131 also relies on shop detail documentation and traceability so the fabricated item can be checked against the intended design.

Checklist Items for Drawings

• General arrangement drawing
• Fabrication drawing
• Lifting lug or padeye detail drawing
• Connection details
• Member sizes
• Plate thicknesses
• Hole sizes
• Weld symbols and sizes
• Bolt sizes and grades
• Drawing number, revision and date
• As-built drawings if the item is already fabricated
• 3D model or CAD files, if available

If drawings do not match the fabricated item, provide marked-up as-built drawings or photos showing the difference. Undocumented changes can delay certification.

Step 6: Confirm Material Grades and Traceability

Material properties affect design capacity. The engineer needs to know what steel was assumed in the design and what steel was actually used in the fabricated item.

AS/NZS 5131 includes requirements for material documentation and traceability. For fabricated steelwork, this can include test certificates, mill certificates, grade identification and a tracking system depending on the construction category and project requirements.

Checklist Items for Materials

• Material grade for main members
• Material grade for lifting lugs and padeyes
• Material grade for plates and stiffeners
• Mill certificates or material test certificates
• Heat numbers or batch records
• Traceability records
• Fastener certificates, where applicable
• Details of any unknown or undocumented steel

Step 7: Provide Welding and Bolting Details

Welds and bolted connections often control the capacity of lifting frames. A large steel member is not useful if the welds or bolts transferring the load are inadequate.

AS/NZS 5131 requires structural steel welding to comply with the relevant part of AS/NZS 1554 and requires welding details such as weld category, size, type and extent to be shown in the shop detail drawing set.

Checklist Items for Welding

• Weld sizes
• Weld types
• Weld locations
• Weld category where specified
• Welding procedure specifications
• Welder qualification records
• Visual inspection reports
• Non-destructive testing reports where performed
• Weld repair records

Checklist Items for Bolting

• Bolt diameter
• Bolt grade
• Number of bolts
• Hole diameter
• Edge distances and pitch distances
• Nut and washer details
• Bolt tensioning or torque records where applicable
• Fastener certificates where available

For lifting frames subject to vibration or repeated use, connection details should be reviewed carefully. Do not change welds, bolt grades or connection details without engineering review.

Step 8: Prepare Fabrication and Inspection Records

Fabrication quality records help prove that the fabricated item matches the design basis. This is where AS/NZS 5131 becomes especially relevant.

For structural steelwork, AS/NZS 5131 covers preparation, assembly, fabrication, welding, mechanical fastening, surface treatment, tolerances and inspection requirements. It also links documentation requirements to the construction category.

Checklist Items for Fabrication Records

• Inspection and Test Plan, also known as an ITP
• Material receipt inspection records
• Fit-up inspection records
• Dimensional inspection records
• Weld inspection records
• NDT reports
• Nonconformance reports
• Concession or deviation approvals
• Fabrication completion records
• Photos before coating or galvanizing

Inspection records are especially useful for existing frames, where the certifying engineer may not have been involved before or during fabrication.

Step 9: Include Proof Load Test Evidence

For lifting devices, proof load evidence may be required or may form part of the verification basis. AS 4991 provides proof loading requirements for general application lifting devices and includes criteria relating to proof load value, hold time, permanent deformation and post-test inspection.

Proof testing should be planned, not improvised. The test arrangement should represent the intended service arrangement as closely as practical.

Checklist Items for Proof Load Testing

• Proof load value applied
• WLL or rated capacity used to calculate the proof load
• Test setup drawing or photo
• Load application points
• Hold time
• Calibration records for test equipment
• Known mass records for test weights, where used
• Pre-test measurements
• Post-test measurements
• Permanent deformation result
• Post-test visual inspection
• Post-test NDT report, where required
• Proof load certificate or report

A proof load certificate with no clear link to the drawing, serial number, test setup or certified configuration may not be enough for engineering sign-off.

Step 10: Check Markings, Tags and Identification

Markings connect the physical item to the certification documentation. If the marking is wrong, missing or unclear, the item may be used outside its certified limits.

For lifting devices, AS 4991 includes marking requirements relevant to manufacturer identification, identification number, tare mass where applicable, WLL or rated capacity, and configuration ratings where multiple configurations exist.

Checklist Items for Marking

• Manufacturer or supplier identification
• Unique identification number
• WLL or rated capacity
• Tare mass where required
• Configuration rating, where multiple configurations exist
• Maximum sling angle where relevant
• Inspection tag status if used by the site
• Photo of marking plate or tag

The certification report and the physical marking should tell the same story.

Step 11: Record Repairs, Modifications and Existing Condition

Existing lifting frames and steel structures need extra care. A frame that was certified years ago may have been damaged, repaired, modified, overloaded, corroded or used in a different configuration.

AS 4991 addresses repair records for lifting devices. AS/NZS 5131 also addresses modification and documentation requirements for structural steelwork. Repairs and modifications should not be treated as workshop-only decisions when they affect the load path.

Checklist Items for Existing or Modified Frames

• Original certification report
• Original drawings
• Current photos
• Current markings
• Repair history
• Modification history
• Inspection records
• NDT records
• Material verification records
• Proof load history
• Description of current intended use

If the current use differs from the original certification, the frame should be reviewed before use.

Complete Certification Review Checklist

Common Gaps That Delay Certification

Certification delays usually come from preventable information gaps.

• No clear WLL or rated capacity
• Unknown centre of gravity
• No sling angle information
• Drawings do not show weld sizes
• Material certificates are missing
• Proof test report does not show the test arrangement
• Frame markings do not match the requested rating
• Repairs were completed without records
• Frame was modified after previous certification
• Fabrication drawings do not match the as-built frame
• NDT was required but not performed before coating

The best way to avoid these problems is to involve the certifying engineer early, before fabrication, coating, proof testing or site delivery.

How to Use This Checklist Before Contacting an Engineer

You do not need every document before contacting an engineer. The checklist is a guide, not a barrier.

Start with the basics:

1. Send the latest drawings.
2. Confirm the required WLL or rated capacity.
3. Provide the lifted mass and centre of gravity.
4. Provide the lifting arrangement and sling angles.
5. Send photos if the item already exists.
6. Send material, weld, inspection and proof test records if available.

From there, the engineer can identify what is missing and whether the certification can proceed as-is, needs further evidence, or requires design changes.

Internal Resources

For more information about certification and lifting device sign-off, see:

• Structural certification for lifting frames and fabricated structures
• Our certification process
• Independent structural verification
• AS 4991 lifting device certification
• Book a free certification call

External Reference Resources

• Standards Australia
• Australian Steel Institute
• Steelwork Compliance Australia
• Weld Australia

Frequently Asked Questions

What is a certification review checklist?

A certification review checklist is a structured list of information needed before an engineer can review a lifting frame, lifting device or steel structure for certification. It usually covers drawings, loads, materials, welds, inspection records, proof testing and markings.

What is the most important information for lifting frame certification?

The most important information is the Working Load Limit or rated capacity, lifted mass, centre of gravity, lifting arrangement, sling angles, drawings, material grades and weld details.

Does AS 4991 apply to lifting frames?

AS 4991 is commonly relevant to lifting frames because they are often treated as lifting devices or below-the-hook lifting attachments. The final standard selection depends on the exact item and certification scope.

Does AS 4100 apply to lifting frames?

AS 4100 may apply where the lifting frame is assessed as a load-carrying steel structure. It is commonly relevant for member capacity, connection capacity and steel design assumptions.

What does AS/NZS 5131 add to the checklist?

AS/NZS 5131 adds fabrication, traceability, inspection, welding, bolting, tolerances, surface treatment and quality documentation requirements for structural steelwork.

Can an existing lifting frame be certified?

Sometimes. Existing lifting frames may be certified if enough evidence is available or can be developed through measurement, inspection, material verification, NDT, proof testing or engineering assessment.

Does a proof load test replace certification?

No. A proof load test provides evidence for a specific test arrangement. Engineering certification still needs to confirm the design basis, load case, materials, welds, markings, inspection evidence and certification limits.

Conclusion

A certification review checklist helps prevent delays, rework and rejected submissions. For lifting frames and steel structures, the checklist should cover much more than a drawing and a requested rating.

A complete review pack should define the certification scope, applicable standards, WLL, load data, centre of gravity, lifting arrangement, drawings, materials, welds, bolting, fabrication records, inspection evidence, proof load records, markings and repair history.

For many projects, AS 4991, AS 4100, AS/NZS 5131 and AS/NZS 1554 all play a role. The right combination depends on the item and the intended use.

If you are preparing a lifting frame, lifting lug, spreader beam, skid frame or fabricated steel structure for certification, the best time to start is before fabrication or proof testing.