mechanicalsplice

Mechanicalsplice refers to a joint formed by mechanical means to connect two components such that load or signal can be transferred across the joint without welding, soldering, or adhesive bonding. The term is used in several engineering disciplines, notably reinforcing steel, fiber optics, and electrical wiring. In each context, the objective is reliable connection with repeatable performance while allowing field assembly or disassembly.

In reinforced concrete, mechanical splices join reinforcing bars where overlap is impractical. They use a steel coupler or sleeve that envelops the bar ends, sometimes with internal gripping teeth, threads, or swaged components. When grout or interlock features are used, the assembly transfers tensile and sometimes shear to the adjacent bar per the design. They meet codes and standards that specify performance for given bar diameters and grades, and required splice lengths.

In fiber optics, a mechanical splice aligns two optical fibers with a precision sleeve or ferrule, optionally using gel or index-matching material to minimize reflections. The assembly is non-fusion and is typically housed to protect the alignment. Performance is measured by insertion loss and return loss, with losses depending on fiber type and alignment accuracy. Benefits include rapid field deployment and reversibility; drawbacks include higher insertion loss and sensitivity to environmental changes.

In electrical and communications wiring, the term also denotes connectors that join conductors by mechanical means—such as crimp, compression, or twist-on connectors. These splices are chosen for speed, insulation, current-carrying capacity, and compliance with electrical standards, and are designed for reliable, reusable, or serviceable joints.

External references include standards for mechanical splices in structural steel, fiber optics, and wiring practices.