Solution Summary: Rebar-Tying Tool
The rebar tying tool is an engineering control that may help reduce stooped postures, and stressful hand and wrist activity. A rebar-tying tool is battery-powered and mechanically fastens rebar together with tie wires.
There are many different kinds of rebar-tying tools. Many models come with adjustable extension handles, while others have these handles available separately.
TyTecker Rebar Pro
The TyTecker Rebar Pro comes with an adjustable handle (Figure 1). The tool operates by pulling the trigger and uses steel clips for tying combinations up to 30 mm (1.18 inches).
- Weight: 13.7 lbs
- Battery: 18 volt 3.0 Ah Li-ion
- Ties per battery charge: 2,300-2,500
- Magazine capacity: 100 clips (2 cartridges of 50 clips)
- Tying time: 0.8 seconds per tie
Figure 1. TyTecker Rebar Pro
Rebar Tier RB 398
The Max RB398 has a brushless twisting motor and operates by pulling the trigger.
- Weight: 5.3 lbs (without extension)
- Rebar size: #3 x #3 to #5 x #6
- Battery: Li-ion
- Ties per battery charge: 2,600
- Magazine capacity: 120 ties per coil
- Tie wire: TW897A (Regular Steel wire), TW897A-EG (Electro Galvanized wire), TW897A-PC (Polyester-Coated wire)
- Tying time: <1 second per tie
Figure 2. Max RB398
The BNT-64 rebar tying tool has an adjustable handle but is not available with an extension arm (Figure 3).
- Weight: 8.4 lbs with battery and wire spool
- Rebar size: up to #6 x #6
- Battery: 12V Ni-MH
- Ties per battery charge: 750
- Capacity: 120-200 ties per coil
- Tie wire: 18 gauge galvanized wire
- Tying time: 1.6 seconds per tie
Figure 3. The BNT-64 rebar tying tool shown with both handle positions.
Stooped postures can cause low back disorders, such as muscle strain or a disc herniation (“slipped disc”), which is bulging of disc material possibly pressing on the spinal cord or nerves that go into the leg. Rebar tying tools with extensions can help reduce stooped postures by allowing the user to remain in an upright position while tying rebar.
Stressful hand & wrist activity can cause musculoskeletal disorders (MSDs) such as muscle strains; tendonitis, which is inflammation of elbow and wrist tendons; or carpal tunnel syndrome, which is compression of a wrist nerve, resulting in finger numbness and loss of hand strength. Rebar tying tools can help reduce stressful hand & wrist activity by automatically fastening bars together with tie wire.
How Risks are Reduced:
Rebar tying tools reduce stooped postures by allowing the user to remain in an upright position while stressful hand and wrist activity is minimized by the tool automatically fastening the tie wires.
In 2010, the National Institute for Occupational Safety and Health (NIOSH) published an article evaluating ironworkers’ exposure to risk factors for developing MSDs of the low back and hand. NIOSH found that using battery operated rebar tiers significantly reduced an ironworker’s exposure to these risk factors.
TyTecker states, “[The Rebar Pro has an] ergonomic design, no more bending, [and] reduces fatigue.” Max USA Corp states, “Just pull the trigger, this simple operation reduces potential wrist damage such as carpal tunnel injuries. Using the optional extension bar reduces the risk of back injuries.”
Safety and health experts believe rebar tying tools will reduce stooped postures by allowing the user to remain in an upright position while stressful hand and wrist activity is minimized by the tool automatically fastening the tie wires.
Effects on Productivity:
Rebar tying tools may increase productivity by reducing fatigue and reducing tying time.
Dan Anton, PT, PhD, ATC; and Jesse Brouwer, SPT – Eastern Washington University
NIOSH Workplace Solutions Sheet
The National Institute of Safety and Health (NIOSH) has published a series of “Workplace Solutions”, which are easy-to-understand recommendations from NIOSH research results. Related to this Construction Solution, please find more information on: Reducing Work-Related Musculoskeletal Disorders among Rodbusters