The D250L Bar Lock L-Series Coupler is similar to the Standard Coupler
but is designed for use when higher loads are required, such as extreme
tension/compression application and/or seismic loading conditions.
L-Series couplers are available in rebar sizes #4 through #14 and exceed
160% of specified yield of Grade 60 rebar. L-Series couplers are
approved for use by most state DOTs, are recognized as an ICC Type 2
seismic splice, and meet ACT specifications. L-Series couplers are also
available in transition sizes, weldable half couplers and epoxy coated
INSTALLATION
1. Insert the end of the first rebar halfway into the coupler until it contacts the center stop pin.
2. Holding the first rebar in place, tighten all the bolts on that half until they are hand tight against the rebar.
3. Insert the end of the second rebar halfway into the coupler until it contacts the center stop pin.
4. Holding the second rebar in place, tighten all the bolts on that half until they are hand tight against the rebar.
5. In a random alternating pattern, tighten all bolts to approximately 50% of the specified bolt torque value
6. In a random alternating pattern, tighten all bolts to approximately 75% of the specified bolt torque value.
7. In a random alternating pattern, tighten all bolts until all the heads of the bolts shear off.
8. Prior to bolt tightening, the serrated rails MUST remain aligned in the same position as they were manufactured. If they are damaged or knocked out of alignment while positioning, installation MUST cease and a new coupler used.
9. Bolt tightening MUST be done in a random alternating pattern similar to tightening the lug nuts on an automobile wheel.
10. A high quality 1" pneumatic drive impact wrench,with at least 100 psig air flow and 185 CFM of delivered air through a no less than 0.75" hose MUST be used for installation.