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Sledge Drive Rock Anchor Systems

Sledge Drive
Information
Parts &
Accessories
Sledge Drive Installation Installation Equipment Corrosion
Protection
Quick, simple anchor designed to develop the full strength of the bar. Recommended for short anchors in rock or concrete. Available with 1-5/8" diamenter aluminum expansion shell. In temporary situations, bar may be removed and used again. Williams can supply custom length steel drive pipes at your request.
Sledge Drive Anchors
With B1S
Smooth Rod
With B7S
All-Thread Coil Rod
With R61 Grade 75 or R50 Grade 60 All-Thread Rebar
Steel Type Bar
Diameter
Recommended Safe
Working Load to
2:1 Safety Factor
Average
Ultimate
Strength
Drill
Hole
Part Number
B8S Cone / Shell
(B7S Cone / Shell)

B1S
Smooth Rod

B7S
All-Thread
Coil Rod

B8S
All-Thread
N.C. Rod

3/8"
(
10 mm)

4.9 kips
(
21.8 kN)

9.8 kips
(43.6 kN)

1-5/8"
(41 mm)

R4M03RB0 / R4A13
(R4MC3RB0 / R4A13)

1/2"
(
12 mm)

9 kips
(
40.0 kN)

18 kips
(80.1 kN)

1-5/8"
(41 mm)

R4M04RB0 / R4A13
(R4MC4RB0 / R4A13)

5/8"
(
16 mm)

11.3 kips
(
40.0 kN)

22.5 kips
(100 kN)

1-5/8"
(41 mm)

R4M05RB0 / R4A13
(R4MC5RB0 / R4A13)

3/4"
(
20 mm)

18 kips
(
80.0 kN)

36 kips
(160 kN)

1-5/8"
(41 mm)

R4M06RAC / R4A13
(R4MC6RAC / R4A13)

7/8"
(
22 mm)

29 kips
(
129 kN)

58 kips
(258 kN)

1-5/8"
(41 mm)

R4M07RAC / R4A13
(R4MC7RAC / R4A13)

R50
Grade 60
All-Thread
Rebar

#4 - 1/2"
(12 mm)

9 kips
(40 kN)

18 kips
(80.1 kN)

1-5/8"
(41 mm)

R4MG4RAC / R4A13

#5 - 5/8"
(16 mm)

13.8 kips
(62 kN)

27.9 kips
(124 kN)

1-5/8"
(41 mm)

R4MG5RAC / R4A13

R61
Grade 75
All-Thread
Rebar

#6 - 3/4"
(20 mm)

22 kips
(97.9 kN)

44 kips
(196 kN)

1-5/8"
(41 mm)

R4MG6RAC / R4A13

Bars Associated with Sledge Drive Anchors
For bar selection, Williams offers continuously threaded or smooth with threaded ends C-1045 bars. Both coil and NC threads are available. Williams also offers R51 Grade 60 All-Thread Rebar and R61 All-Thread Rebar for its sledge drive anchors.

Grade 75 All-Thread Rebar

Williams Form Engineering Corp.
Sledge Drive
Information
Parts &
Accessories
Sledge Drive Installation Installation Equipment Corrosion
Protection
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