Leviat is proud to receive quality recognition of the MOMENT JoinTec Coupler system by the grant of approval in accordance with CARES Appendix TA1-F.
CARES is an independent, not-for-profit certification body that operates for the benefit of the construction industry, offering certification schemes for companies that produce materials or components for the reinforced concrete industry.
Download our CARES certification here.
MOMENT JoinTec Connection
MOMENT JoinTec mechanical connections conform fully with applicable codes, including BS 8110 Pt 1:1997 Clause 3.12.8.16.2 Bar in Tension and ISO 15835-1:2009. The MOMENT Jointec coupler system provides a ‘Bar Break’ solution with defined ductile behaviour, allowing the connection to perform like a continuous reinforcing bar.
Fig 1 – MOMENT JoinTec Mechanical Connection provides a ‘Bar Break’ solution as it performs in excess of the ultimate strength of the rebar.
Fig 2 – MOMENT JoinTec mechanical connections perform beyond the yield point of the bar whereas Lap Splices are only defined in the elastic area. This indicates that the MOMENT JoinTec connection, which work as continuous bars, provides additional strength and safety all-round, independent of the quality of the surrounding concrete.
Design Codes & Specifications
In reinforced concrete design, the Structural Engineer is faced with the task of determining where and how reinforcing bars must be spliced in a structure. This must be done to ensure that the national regulations are adhered to and also to make sure that the structure will not suffer a progressive collapse if overloaded.
Design requirements of the applicable codes, BS 8110 and EN 1992-1 generally assume a minimum connection strength but are silent on the details about test methods and conformity assessment. ISO 15835, which is used as the basis for the CARES approval scheme covers all aspects of coupler production and assessment including:
- To assess the serviceability, a test is made on a representative gauge length assembly comprising reinforcement of the size, grade and profile to be used and a coupler of the precise type to be used, the permanent elongation after loading to 0.6 fy should not exceed 0.10mm.
- It also covers tests for couplers to be used for mechanical splices in reinforced concrete structures under predominantly static loads and additional requirements for couplers to be used in structures subjected to high cycle elastic fatigue loading and/or too low cycle elastic-plastic reverse loading to represent seismic activities.
As most of the Southeast Asian countries progress in nation-building, federal governance, regulations and codes are becoming more stringent, MOMENT JoinTec connections, the proven mechanical splice method, provides you with the ability to design and build concrete structures to withstand the test of time.
MOMENT JoinTec Couplers were used extensively for reinforcement bars within the railway in MRT projects.
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