When the lead to height ratio is 1-1/4 or greater, which bolt should be used?

Using a thimble eye bolt when the lead to height ratio is 1-1/4 or greater is appropriate because this type of bolt provides superior strength and support when securing loads in high-stress applications. Thimble eye bolts are designed to accommodate loads that may involve significant movement or changes in angle, which can occur in outside plant environments. The thimble portion helps to distribute the load more evenly across the bolt and reduce wear over time, which is critical for maintaining reliability and safety.

In the context of outside plant design, proper selection of hardware, such as bolts, is crucial for ensuring that utility lines are secure under varying conditions, including tension from wind or other environmental factors. The thimble eye bolt's design facilitates the attachment of ropes or cables in scenarios where the lead to height ratio exceeds 1-1/4, providing the necessary strength and durability for heavy loads. This makes it the preferred choice for applications that meet these specifications.