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Hydro jaw CRI
Post tensioning systems Williams
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Post Tensioning Systems |
Williams Pre-Stressing / Post Tensioning Systems consist of high tensile steel bars available in five diameters from 1" (26 mm) to 2-1/2" (65 mm) with guaranteed tensile strengths to 778 kips (3460 kN). They are provided with cold rolled threads over all or a portion of the bar's length. All tension components for the systems are designed to develop 100% of the bar strength. All components of the systems are designed and manufactured in the United States. Williams All-Thread-Bar systems have been field proven around the world.
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Applications |
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- Transverse Post Tensioning
- Longitudinal Post Tensioning
- Pile Test Anchors
- Rock Anchors
- Concrete Ties
- Hanger Bolts
- Jacks
- Structural Steel Frame Ties
- Shear Pins
- Bridge Retrofit Applications
- Pre-Stressed Block and Brick Construction
- Seismic (Earthquake) Restrainer Systems
- Ground Anchors and Soil Nails
- Wood Structure Post-Tensioning Bars
- Temporary High Strength Connections
- Tower Base Plate Anchor Bolts
- Sheet Pile Ties and Tie-Backs
- High Strength Concrete Reinforcement Bars
- Multiple Corrosion Protection Anchors
Example of Post-Tensioning in Precast Concrete
Before Casting
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After Casting
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Bai anchor systems Williams
Bail Anchor Systems
Bail Anchors are fast setting mechanical anchors that are simple to use for light to moderate loads in temporary or permanent applications. They set in a one step torque tension operation and work well with Williams Grade 75 All-Thread Rebar, constant torque nuts and domed plates/spherical washer assemblies. They are well suited for use in single or twin grout tube installations due to the minimal rotation the bar undergoes during the setting process.
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R5M-F3F
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R5M-F2B
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R5M-F9F |
R5M-D20
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HC-16 |
| Blank Part Number |
Range of Bar Diameter | Hole Diameter |
Ultimate Capacity |
Shell Length |
Wedge Length |
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UNC / Coil |
Grade 75 |
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| R5M-F3F | 1/2" - 5/8" (13-16 mm) |
N.A. | 1-1/4" (32 mm) |
15-22.5 kips (67-100 kN) |
2-1/8" (54 mm) |
1-3/4" (44 mm) |
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R5M-F2B |
1/2" - 3/4" |
N.A. |
1-3/8" |
15-30 kips |
2-7/8" |
1-3/8" |
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R5M-F9F |
3/4" - 1" |
#6, #7 |
1-3/4" |
33-40 kips |
3-1/4" |
2-1/4" |
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R5M-D20 |
5/8" - 1-1/8" |
#6, #7, #8 |
2" |
15-50 kips |
4" |
3-7/8" |
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HC-16 |
3/4" - 1" |
#6, #7, #8 |
2" |
33-79 kips |
4" |
2-1/4" |
Bail Anchor Installation
Bail anchors are initially set in the hole using relatively low torques that should not exceed 30 to 50 ft/lbs. Higher setting torques applied to the bail anchor alone will not help in the setting process. Final set of the Bail Anchor is accomplished through direct tension with a hydraulic jack or preferably by torquing the nut against the plate. This action pulls the cone further into the shell locking it into place. The outward migration of the bar is usually no more than 1" to 2" maximum. This movement must be anticipated and allowed for in the design and application of this anchor type in ungrouted conditions. Bail anchor installations are tested and grouted by normal methods.
Sledge drive rock anchor systems Williams
Sledge Drive Rock Anchor Systems
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.
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Spin-lick mechanical rock anchor systems Williams
Spin-Lock Mechanical Rock Anchor Systems
Williams Spin-Lock anchors were first used in the 1950's for rock/roof bolting in projects such as NORAD and Australia's Snowy Mountain power facility. Since then many engineers, contractors and owners have seen the advantages of the Spin-Locks on dams, locks, water/waste treatment facilities and many other large scale civil projects. Williams Spin-Lock anchors provide the advantage of immediate anchorage for pre-stressing and require shorter embedments than traditional grout bond anchor systems.
The Spin-Lock has been job-proven, time and time again to meet all bolting requirements in any strata which can be bolted.
To comply with the need for bolts which will satisfactorily anchor a broad range of variable rock formations, Williams has developed a complete family of rock bolts with a simple and efficient system of installation. Williams offers a complete line of rental equipment for installing, testing and grouting of Spin-Lock anchors.
Before proceeding with your next project, consult with a design agency familiar with Williams Rock Bolting. Williams would be pleased to recommend an ideal system for you.
| Williams Spin-Lock Anchor | Serrated Anchor by others | ||
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Expansion shell receives full bearing support from solid 300° cone design. |  |
Quartered cone design leaves expansion shell unsupported at adjacent gaps. Shell can collapse in under high stress. |
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Manta ray mechanical soil anchors Williams
Manta Ray Mechanical Soil Anchors
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Manta Ray and Stingray anchors offer many significant advantages:
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 Sting Ray Anchor |
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There are eight Manta Ray Anchors and three Stingray Anchors with light to heavy duty holding capacities. Shown to the left are six different Manta Ray anchor heads. All anchors are made of galvanized ductile iron, can be driven with the drive steel set (except the MR-88 & M-68) and can be tested to the desired holding capacity with the load locker.
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Manta Ray & Stingray Anchor Structural Properties
Safety Factor 2:1 |
Weight Per Each |
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& Diameter** |
Number |
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| MR-68 | 2.5 kips (11 kN) |
3/8" - 16 UNC (10 mm) |
B8S-03 | 1 lbs. (0.45 kg) |
| MR-88 | 5 kips (22 kN) |
1/2" - 13 UNC (12 mm) |
B8S-04 | 2.2 lbs. (1 kg) |
(36 kN) |
(20 mm) |
R61-06 | 4.7 lbs. (2.1 kg) |
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(45 kN) |
(20 mm) |
R61-06 | 6 lbs. (2.7 kg) |
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MR-2
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(89 kN) |
(20 mm) |
R61-06 | 10 lbs. (4.5 kg) |
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MR-1
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(89 kN) |
(20 mm) |
R61-06 | 12 lbs. (5.4 kg) |
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MR-SR
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(89 kN) |
(20 mm) |
R61-06 | 21 lbs. (9.5 kg) |
| MK-B | 20 kips (89 kN) |
(20 mm) |
R61-06 | 85 lbs. (38.5) |
| Sting Ray | Safety Factor | Part Number | Working Load | Weight |
| SR-1 | 45.5 kips (198 kN) |
1-1/8" (28 mm) |
R61-09 | 47 lbs. (21.3 kg) |
| SR-2 | 50 kips (223 kN) |
1-1/8" (28 mm) |
R61-09 | 66 lbs. (30 kg) |
| SR-3 | 50 kips (223 kN) |
1-1/8" (28 mm) |
R61-09 | 91 lbs. (41.2) |
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Williams Anchor Rods are fully threaded and can be field cut and coupled.
**Anchor Rod Lengths: R61-06 & R61-09 up to 50 feet uncoated. B8S-03 & B8S-04 up to 20 feet Recommend: Galvanized rods should be cut to size prior to galvanizing to insure good nut fit. |
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Manta Ray Anchor Holding Capacities in Listed Soils
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Common Soil
Type Description |
Typical
Blow Count "N" Per ASTM-D1586 |
MR-68
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MR-88
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MR-4
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MR-3
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MR-2
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MR-1
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MR-SR
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MK-B
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| Peat, Organic Silts; Inundates Silts, Fly Ash |
0 - 5
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N.A.
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0.2-0.9 kips
(.9-4 kN) (4,6) |
0.3-1.5 kips
(1.3-7 kN) (4,6) |
0.8-3 kips
(3.5-13 kN) (4,6) |
2-5 kips
(9-22 kN) (4,6) |
3-8 kips
(13-37 kN) (4,6) |
4-12 kips
(18-53 kN) (4,6) |
6-16 kips
(27-71 kN) (4,6) |
| Loose fine Sand; Alluvium; Soft-Firm Clays; Varied Clays; Fills |
4 - 8
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0.4-.8
(1.8-3.5 kN) (4,6) |
0.9-1.5 kips
(4-7 kN) (4,6) |
1.5-2.5 kips
(7-11 kN) (4,6) |
3-5 kips
(13-22 kN) (4,6) |
5-8 kips
(22-36 kN) (4,6) |
8-12 kips
(36-53 kN) (4,6) |
9-14 kips
(40-62 kN) (4,6) |
13-20 kips
(58-89 kN) (4,6) |
| Loose to Medium Dense Fine to Coarse Sand; Firm to Stiff Clays and Silts |
7 - 14
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0.75-1.25 kips
(3.5 -6 kN) (4) |
1.5-2.5 kips
(7-11 kN) (4) |
2.5-4 kips
(11-18 kN) (4) |
5-8 kips
(22-36 kN) (4) |
7-10 kips
(31-44 kN) (4) |
10-15 kips
(44-67 kN) (4) |
14-18 kips
(62-80 kN) (4) |
20 kips
(89 kN) (4) |
| Medium Dense Coarse Sand and Sandy Gravel; Stiff to very Stiff Silts and Clays |
14 - 25
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1-1.5 kips
(5-7 kN) (4) |
2-3 kips
(9-13 kN) (4) |
3.5-4.5 kips
(16-20 kN) (4) |
7-9 kips
(31-40 kN) (4) |
9-12 kips
(40-53 kN) (4) |
15-20 kips
(67-89 kN) (4) |
18-20 kips
(80-89 kN) (4) |
20 kips
(89 kN) (2,4) |
| Medium Dense Sandy Gravel; Very Stiff to Hard Silts and Clays |
24 - 40
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1.5-2 kips
(7-9 kN) (4) |
3-4 kips
(13-18 kN) (4) |
4.5-6 kips
(20-25 kN) (4) |
9-10 kips
(40-45 kN) (4) |
12-18 kips
(53-80 kN) (4) |
18-20 kips
(80-89 kN) (2,4) |
20 kips
(89 kN) (2,4) |
20 kips
(89 kN) (2,4) |
| Dense Clays, Sands and Gravel; Hard Slits and Clays |
35 - 50
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2-2.5 kips
(9-11 kN) (4) |
4-5 kips
(18-22 kN) (4) |
6-8.5 kips
(27-36 kN) (4) |
10 kips
(45 kN) (2,4) |
15-20 kips
(67-89 kN) (2,4) |
20 kips
(89 kN) (2,4) |
20 kips
(89 kN) (2,3,4) |
20 kips
(89 kN) (1,3) |
| Dense Fine Sand; Very hard Silts and Clays |
45 - 60
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2.5 kips
(11 kN) (2,3,4) |
5 kips
(22 kN) (2,3,4) |
8.5 kips
(36 kN) (2,3,4) |
10 kips
(45 kN) (2,3,4) |
20 kips
(89 kN) (2,4) |
20 kips
(89 kN) (1,3,4) |
20 kips
(89 kN) (1,3) |
20 kips
(89 kN) (1,3,5) |
| Very Dense and/or Cemented Sands; Coarse Gravel and Cobbles |
60 - 100+
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2.5 kips
(1 kN) (1,3) |
5 kips
(22 kN) (1,3) |
8.5 kips
(36 kN) (1,3) |
10 kips
(45 kN) (1,3) |
20 kips
(89 kN) (1,3,4) |
20 kips
(89 kN) (1,3) |
20 kips
(89 kN) (1,3,5) |
20 kips
(89 kN) (1,3,5) |
1 - Drilled hole required to install.
2 - Installation may be difficult. Pilot hole may be required.
3 - Holding capacity limited by working load of anchors
4 - Holding capacity limited by soil failure.
5 - Not recommended in these soils.
6 - Wide variation in soil properties reduces prediction accuracy.
Pre-constructed field test recommended.
Minimum 2:1 Safety Factor Recommended
* Use this chart for estimation only.
* True capacity must be tested with anchor locker.
Stingray Anchor Holding Capacities in Listed Soils
| Common Soil Type Description |
Typical Blow Count "N" Per ASTM-D1586 |
SR-1 | SR-2 | SR-3 |
| Peat, Organic Silts; Inundates Silts, Fly Ash |
0 - 5 | N.A. | N.A. | N.A. |
| Loose fine Sand; Alluvium; Soft-Firm Clays; Varied Clays; Fills |
13-19 kips (58-82 kN) (4,6) |
19-28 kips (85-125 kN) (4,6) |
24-37 kips (107-165 kN) (4,6) |
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| Loose to Medium Dense Fine to Coarse Sand; Firm to Stiff Clays and Silts |
16-24 kips (72-107 kN) (4) |
27-36 kips (120-160 kN) (4) |
37-48 kips (165-214 kN) (4) |
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| Medium Dense Coarse Sand and Sandy Gravel; Stiff to very Stiff Silts and Clays |
24-32 kips (107-142 kN) (4) |
31-48 kips (138-214 kN) (4) |
48-50 kips (214-253 kN) (4) |
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| Medium Dense Sandy Gravel; Very Stiff to Hard Silts and Clays |
29-41 kips (129-182 kN) (4) |
46-50 kips (205-223 kN) (4) |
50 kips (253 kN) (4) |
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| Dense Clays, Sands and Gravel; Hard Slits and Clays |
39-45.5 kips (173-198 kN) (4) |
50 kips (253 kN) (2,4) |
50 kips (253 kN) (2,3,4) |
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| Dense Fine Sand; Very hard Silts and Clays |
45.5 kips (198 kN) (2,4) |
50 kips (253 kN) (2,4) |
50 kips (253 kN) (2,3) |
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| Very Dense and/or Cemented Sands; Coarse Gravel and Cobbles |
45.5 kips (198 kN (1,3) |
50 kips (253 kN) (1,3) |
50 kips (253 kN) (1,3,5) |
1 - Drilled hole required to install.
2 - Installation may be difficult. Pilot hole may be required.
3 - Holding capacity limited by working load of anchors
4 - Holding capacity limited by soil failure.
5 - Not recommended in these soils.
6 - Wide variation in soil properties reduces prediction accuracy.
Pre-constructed field test recommended.
Minimum 2:1 Safety Factor Recommended
* Use this chart for estimation only.
* True capacity must be tested with anchor locker.
