Architecture Practice Exam 2025 - Free Architecture Practice Questions and Study Guide

The correct choice highlights that hot or high temperatures can adversely affect the Working Load Limit (WLL) of a sling. When slings are subjected to elevated temperatures, the materials from which they are made—such as nylon, polyester, or other synthetic fibers—can experience significant degradation. Heat can weaken these fibers, reducing their tensile strength and altering their ability to perform under load. This weakening can lead to a higher risk of failure when the sling is used, especially if it is loaded to or near its established limit.

In contrast, cold and moderate temperatures typically do not have the same detrimental effects on most sling materials, though extreme cold could potentially make some materials more brittle. Room temperature is generally considered to be within the safe operating range for slings, as materials are designed to function effectively under these conditions without risk of significant strength loss. Therefore, the impact of high temperatures is a key concern for those using slings in various applications. Understanding these temperature influences is crucial for ensuring safety and appropriateness of material use in lifting and rigging operations.