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Precast Application

Construction in precast concrete is an increasingly popular way to form reliable structures for construction across almost every industry and application. Structures previously made only with cast, in-situ concrete are now constructed using precast concrete. A successful prefab or precast concrete installation for your next job requires special rebar splicing systems that increase the structural integrity of precast concrete constructions.


The traditional method of connecting concrete reinforcing bars in high-rises, skyscrapers and towers has been lap splicing. But as many architects and specifiers have discovered, lap splicing does not provide the same advantages as mechanical splicing in the reinforced concrete construction process.

We bring you the world’s most widely used threaded splices that create a positive locking connection and provide structural integrity to reinforced concrete slabs, beams and other building foundational elements. nVent LENTON spliced bars behave as continuous lengths of reinforcing steel bars by providing “full strength” in tension, compression and stress reversal applications to improve constructability and efficiency in major projects.

For construction business owners, the difference often comes down to time saved and money spent.

nVent LENTON Solutions

nVent LENTON Interlok

nVent LENTON Interlok

nVent LENTON Interlok allows for load bearing applications such as columns, beams and shear walls to be efficiently incorporated into projects using segmental precast construction techniques.

  • Maintains structural integrity between precast sections
  • Provides load path continuity - reinforcing steel bars (rebar) act as one continuous bar
  • Tensile loads are transferred through the reinforcing bar independent of the compressive strength of the concrete
  • Helps eliminate costly and unsightly patchwork
  • Designed to meet or exceed building code requirements
  • Easy to use

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Lap vs. Mechanical Splices

The benefits add up when you choose mechanical splicing connections for building reinforced concrete structures.

Lenton Lap Splice Illustration
1. Beam Reinforcing 2. Column Reinforcing 3. Lap Bar 4. Mechanical Coupler

Lap Splices

  • Tend to have poor cyclic performance. To prevent concrete splitting, additional rebar may be required for confinement.
  • Present design constraints. Lap splices double the number of bars leading to rebar congestion, which can restrict the flow of aggregates.
  • Have hidden costs. Lap splicing can involve time-consuming calculations and overestimating mistakes.
Lenton Mechanical Splice Illustration
1. Beam Reinforcing 2. Column Reinforcing 3. Lap Bar 4. Mechanical Coupler

Mechanical Splices

  • Are proven reliable. Mechanical splices behave similarly to a continuous piece of rebar and offer superior cyclic performance.
  • Are design friendly. Reducing rebar congestion and improving concrete consolidation are easier with mechanical splices.
  • Are economical. Mechanical splices require no special skills and reduce labor and material costs because less rebar is used.

Stronger Structures

Trust nVent LENTON for creating continuity in concrete reinforcement projects. We have supported the construction industry since 1979 and can assist you with certifications. Our experts not only understand global codes and standards―they help write them.

nVent LENTON also brings you:

Rebar Splicing Specialists that appreciate your unique project challenges.

In-depth guidance about engineered solutions for building concrete reinforcement needs.

Broad experience and an extensive testing base across the construction industry.

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Featured Product: nVent LENTON Interlok

nVent LENTON Interlok was engineered for use in precast construction. It is designed to provide structural integrity between load bearing precast concrete elements such as columns, beams, shear walls, and panels. nVent LENTON Interlok provides superior dynamic, seismic and ultimate strength performance for moment frame applications. Typical applications include column to column, column to foundation, shearwall to foundation, shearwall to shearwall, panel to panel, wall to floor slab and architectural panels.

We Can Help!

Contact nVent LENTON experts to help with your next project.