The Ultimate Cold Forged Splicing System
Fortec is a parallel-threaded mechanical splicing system designed for the connection of concrete reinforcing bars from Ø 12 to 57 mm (ASTM #4 to #18).
Designed and manufactured in compliance with ACI 318, IBC 2006, BS 8110, Eurocode 2, DIN 1045, CalTrans, ASME Sec III Div 2.
- No reduction of the bar cross section area.
- Full-Tension splice: Bar-break under tensile load.
- Allows full ductile elongation of bars.
- Easy installation, no torque wrench required.
- One standard coupler for all splicing requirements (Standard/Position).
- Manufactured under strict quality assurance plan ISO 9001 and ASME. Third party tested.
- Full traceability of material origin and production batch.
- Type 2 coupler suitable for seismic areas.
- Tested under reverse-cyclic conditions.
- Solves bar congestion problems.
- No staggering of splices bars required.
A 3 steps process
The end of the reinforcing bar is sawn square.
- Cold forging
The sawn end of the reinforcing bar is then enlarged by a patented cold forging process. The core diameter of the bar is increased to a pre-determined diameter.
Finally, the thread is mechanically cut onto the enlarged end of the bar.
Easy connection by bar rotation until full thread engagement. Parallel thread : No risk of thread mis-match. No risk of cross-threading.
Even when both bars cannot be turned, the Fortec system uses a standard Fortec coupler (exactly the same as used for type A) : The coupler is fully engaged onto the extended thread of the connecting bar. The assembly is simply completed by butting the bars end to end and screwing back the coupler onto the first bar until full engagement.
This assembly method is similar to Type B, with the addition of a lock-nut to maintain the second bar in position.
When the bars cannot be brought butt to butt (as it may happen in cages manufacturing), Fortec bridging splices are the answer. Both bars are threaded with a standard Fortec® thread, and a “Bridging Assembly Set” is used to connect them.
When there is a need to splice bars of different sizes, it is allowable in most cases to reduce the size of the larger bar and to use a standard coupler. However the Fortec system also proposes special transition couplers that conveniently avoid the difficult task of planning in advance the need of transitions.
A convenient alternative to hooked bars to provide end anchorages in congested areas. Fortec standard anchorage heads are circular and have a net bearing area of 4 times or 9 times the cross-section of the bar, but can also be made to order in other shapes or dimensions to fit the application requirement.
For composite construction where concrete reinforcement bars must be welded to structural steel, use Fortec weldable couplers, which are specially made from low carbon steel and which have a large chamfer for bevel welding.
Some Major References
Documentation about Fortec coupling solution