Tie Rods

System Description

The construction of heavy marine bulkheads for various docking facilities have, for many years, benefited from the use of DYWIDAG Tie Rods. Facilities such as barge and ship docks as well as offshore service bases have found the system to be a cost effective alternative to large diameter A36 tie rods with upset threads and turnbuckles.


Ease of Installation
The continuous rolled on threads provide contractors with much more flexibility in selecting methods of installation. The rugged, self-cleaning threads virtually eliminate assembly problems which result from damaged or dirty machine-manufactured threads.

THREADBAR ®s can be ordered slightly longer than necessary to accommodate the minor misalignment which normally occurs during the installation of sheet piling. They can easily be cut to the desired length, thus eliminating the need to cut and re-weld upset rods to accommodate length changes.

The continuously threaded coupler makes it possible to join bar ends together simply by rolling the coupler from one bar onto the other, eliminating the need to struggle with heavy turnbuckles. Proper coupler engagement is easily verified by measurement.

Lower Cost
The ease and flexibility of installation which the system offers to the contractors is reflected in lower installation cost. Material costs for THREADBAR ®s are normally less than for upset rods.

Performance
The high strength to weight ratio together with the elimination of strength loss due to threading allow design engineers to specify a more efficient product. Anchor nuts and couplers for DYWIDAG Reinforcing Steel THREADBAR ®s develop 100 % of the nominal ultimate strength of the bar.

Availability of Special Details
Where access to the outside of the bulkhead wall is limited, special clevis devices are available for attaching bars to sheet piles, soldier piles, or walers. Techniques and equipment are also available for hydraulically drawing the internal bar ends together for coupling.

Material Specifications
THREADBAR ®s are available in reinforcing steel quality in accordance with ASTM A-615 Grade 60 or Grade 75. Available in mill length to 60', DYWIDAG THREADBAR ®s may be cut to specified lengths before shipment to the jobsite or where circumstances warrant, threadbars may be shipped in mill lengths for field cutting with a portable friction or band saw. Threadbars may also be used as deadman anchors or other applications requiring tensile elements.
Your local DYWIDAG representative will be happy to assist you with your specific requirements.