A flat sling in a choke hitch configuration offers a secure grip on loads that might slip in a vertical lift. But can every flat sling be used this way? The short answer is yes—but with significant capacity reduction and strict application rules. According to EN 1492-1 and ASME B30.9, a choke hitch reduces a sling's working load limit to 80% of its vertical hitch capacity, with additional reductions for angles below 120° at the choke point. This guide explains the capacity factors, proper choke hitch technique, conditions that prohibit choke use, and critical inspection points to ensure safe operation.
A lifting sling that has lost its original color is a common sight on job sites. Many riggers wonder: is it still safe to use? The short answer—according to industry standards—is no. Color fading is a visible indicator of ultraviolet (UV) degradation, which weakens synthetic fibers and compromises the sling's load-bearing capacity. This guide examines what faded color means for sling safety, how to distinguish UV damage from other types of discoloration, and the specific retirement criteria outlined in ASME B30.9 and Washington Administrative Code (WAC) regulations. For rigging supervisors and safety professionals, understanding the implications of a faded sling is essential to preventing catastrophic failure.
A flat sling is one of the most versatile tools in any rigging operation. But when it comes to selecting the right configuration, the choice between eye & eye and endless flat slings can significantly impact both safety and efficiency. Eye & eye slings feature sewn loop ends for quick attachment, while endless slings form a continuous loop that can be rotated to distribute wear. This guide breaks down the structural differences, application advantages, and selection criteria for each type, drawing on industry standards including ASME B30.9 and EN 1492-1 to help you make an informed decision.
A lifting belt can look perfectly serviceable on the outside while its load-bearing core has been silently compromised. Internal fiber damage—caused by repeated flexing, overloading, or impact—does not announce itself with visible warning signs. Yet it is precisely this hidden degradation that leads to sudden, catastrophic sling failure under load. This article draws on industry test data, academic research on polyester webbing fatigue, and real-world failure investigations to explain why internal damage is more critical than surface wear. We examine the mechanisms of fiber fatigue, the limitations of visual inspection, and the inspection protocols—including the "feel and fold" method—that can reveal internal deterioration before it causes an accident. For engineers, rigging supervisors, and procurement professionals, understanding this hidden threat is essential to building a truly safe lifting operation.