Sequence Phases
System Data
Pre-Use Checks
Operating Requirements
Horizontal plate clamps are designed for horizontal (flat) lifting only. The plate must remain level during the lift. Use 4 clamps with a spreader beam for balanced horizontal lifts of large plates.
• Maximum sling angle: 60° from vertical (included angle ≤120°) — exceeding this reduces gripping force
• Never exceed WLL — always check data plate before every lift
• Never shock-load — lift smoothly, no sudden jerks
• Never side-load — load must hang balanced and level
• One plate only — never lift multiple stacked plates
• Lock pins must be engaged on all clamps before any lift
• Use 4 clamps + spreader beam for large/heavy plates
• Tag lines required for load control during transport
• Never stand under a suspended load
AS 4991 — Lifting devices: design, testing and operational requirements. AS 1418 — Cranes, hoists and winches: below-the-hook devices. WHS Regulations Ch4 Pt4.5 — Plant and structures. All lifting equipment must comply with manufacturer specifications.
Always check the manufacturer’s current specifications before use. WLL, plate thickness range, jaw opening, and operating limitations vary between manufacturers and models. The 60° maximum sling angle is a general rule — some manufacturers may specify different limits.
Specifications
Australian Standards & References
Lifting devices for precast concrete
Cranes, hoists and winches (below-the-hook devices)
Prefabricated concrete elements
Chapter 4, Part 4.5 — Plant and structures
Licence to Perform Dogging
Always refer to manufacturer specifications
Use per AS 4991, AS 1418 & manufacturer specifications
Horizontal plate clamps — horizontal lift only
Max sling angle 60° from vertical — check manufacturer
Australian Standards & WHS Regulations apply
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