Grout-filled coupling sleeve with taper thread Grout-filled coupling sleeve with parallel thread at upset bar ends Size ranges of steel bar suitable to be splicedĬold-swaged coupler with taper-threaded endsĬoupler for thread-like deformed reinforcing barsĮxtruded steel coupler with parallel threaded endsįriction-welded bar coupler with parallel threadsįriction-welded coupler with taper-threaded ends Table-1: Tension and Compression Mechanical Splice Types, Their Designated Steel Number, Steel Bar Type and Applications Tension-compression mechanical splice type Number of tension and compression mechanical splices is shown from Figure-4 to Figure-7. Tension and compression mechanical splices types, designated bar sizes to be spliced by each splice type, the grade of the steel bar which is spliced using certain type of tension and compression mechanical splice, and installation condition of each mechanical splices are provided in Table-1. There are sizable numbers of commercially manufactured tension and compression mechanical splices. This type of mechanical splice can resist tension and compression stress. ![]() Tension and Compression Mechanical Splices for Rebars It should be known that the end of the rebars need to be saw cut in the case of strap type steel coupling sleeve, but no special end preparation is needed for steel filled coupling sleeve. 57 whereas the latter is suitable for splicing bar size ranges from No.22 to No.57.įig.2: Steel Filled Coupling Sleeve Spliceįig.3: Strap Type Steel Coupling Sleeve Splice The former can be used to splice rebar sizes ranges from No. Steel filled coupling sleeve and strap type steel coupling sleeve are the two most commonly used examples of end bearing splices. Therefore, if this condition cannot be guaranteed, then it is advised to avoid the use of compression only mechanical splices for reinforcement bars. The compressive stress is transferred by vertical bearing from one bar to another one.Ĭompression only mechanical splices can be used when tension stress is not occurred.
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