Mechanical Splicer Innovative type of mechanical splicer for extending the length of precast, prestressed concrete piles. The splicer was developed, tested and manufactured in Israel. Recently, it has been used successfully to obtain 45 m long piles for the foundations of highway and railway bridges constructed at the Ayalon Project in the city of Tel Aviv. 1. Section through splicing unit. 2. Exploded view of splicing unit. 3. Matching two splices ready for delivery to prestressing yard. 4. Mated splicing units ready for installation into pile forms. 5. Splicing unit after installation in prestressing bed ready for concreting. 6. Concrete being cast into pile forms. 7. Two newly cast pile ends after stripping of forms. 8. Piles stacked at prestressing plant ready for delivery to bridge site. 9. Top of the first pile segment protruding from the ground after hammering. 10. Second pile segment, mounted on first segment.