Mechanical Splices

Tension-Compression Mechanical Splices

The cold-swaged coupling sleeve uses a hydraulic swaging press with specialties to deform the sleeve around the ends of the spliced reinforcing bars to produce positive mechanical interlock with the reinforcing bars. Bars may be shear-cut, or saw-cut, however, a bar-end check is recommended. Bars of different sizes can be spliced with this system. This mechanical splice can be used for joining reinforcing bars to structural steel members.  Longer sleeves are required for splicing epoxy-coasted reinforcing bars.

Mechanical Splice Requirement

ACI 318 Chapters 18 and 25 state the requirements for mechanical splices. They are:

TYPE 1

Shall develop in tension and compression as required at least 125 percent of the specified yeild of the bar. Example: For ASTM A615 grade 60 bar: 1.25 x 60,000 psi = 75,000 psi. Therefore, a splice test exceeding 75,000 psi meets the Type 1 requirement for A615 Grade 60 bar.

TYPE 2

Shall conform to Type 1 requirements and develop 100% of the specified ultimate strength of the bar being spliced. Example: For ASTM A615 Grade 60 bar: 1.00 x 90,000 psi = 90,000 psi. Therefore, a splice test exceeding 90,000 psi meets the Type 1 and Type 2 requirement for A615 Grade 60 bar.

Caltrans ‘Ultimate & Service” Splice

Category:

Description

ITEM CODEITEM DESCRIPTION
TYPE 2 COUPLER
#4#4 MECHANICAL COUPLER
#5#5 MECHANICAL COUPLER
#6#6 MECHANICAL COUPLER
#7#7 MECHANICAL COUPLER
#8#8 MECHANICAL COUPLER
#9#9 MECHANICAL COUPLER
#10#10 MECHANICAL COUPLER
#11#11 MECHANICAL COUPLER
#14#14 MECHANICAL COUPLER
#18#18 MECHANICAL COUPLER