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Micropile Accessories
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150 KSI All-Thread-Bar - ASTM A722 |
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R71 150 KSI All-Thread-Bar - ASTM A722
Nominal
Bar
Diameter
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Minimum
Net Area
Thru Threads
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Minimum
Ultimate
Strength
|
Minimum
Yield
Strength
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Nominal
Weight
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Approx.
Thread
Major Dia. |
Part
Number
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1-3/4"
(45 mm)
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2.60 in2
(1664 mm2)
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400 kips
(1779 kN)
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320 kips
(1423 kN)
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9.06 lbs./ft.
(13.5 Kg/M) |
2"
(50.8 mm) |
R71-14
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2-1/2"
(65 mm) |
5.19 in2
(3350 mm2) |
778 kips
(3457 kN)
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622 kips
(2766 kN)
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8.20 lbs./ft.
(27.1 Kg/M)
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2-3/4"
(69.9 mm) |
R71-20 |
** 3"
(75 mm) |
6.46 in2
(4169 mm2) |
969 kips
(4311 kN)
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775 kips
(3448 kN)
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22.3 lbs./ft.
(32.7 Kg/M)
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3-3/64"
(78.2 mm) |
R71-24 |
** The 3" diameter bar is not covered under ASTM A722.
More detailed information on Williams 150 KSI All-Thread-Bar
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Grade 75 All-Thead Rebar - ASTM A615 |
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R61 Grade 75 All-Thead Rebar - ASTM A615
Bar Desig. &
Nominal Dia. |
Minimum
Net Area
Thru Threads |
Minimum
Ultimate
Strength |
Minimum
Yield
Strength |
Nominal
Weight |
Approx.
Thread
Major Dia. |
Part Number |
#14 - 1-3/4"
(45 mm) |
2.25 in2
(1452 mm2) |
225 kips
(1001 kN) |
168.7 kips
(750 kN) |
7.65 lbs./ft.
(11.8 Kg/M) |
1-7/8"
(47.6 mm) |
R61-14 |
#18 - 2-1/4"
(55 mm) |
4.00 in2
(2581 mm2) |
400 kips
(1779 kN) |
300 kips
(1335 kN) |
13.6 lbs./ft.
(19.6 Kg/M)
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2-7/16"
(61.9 mm) |
R61-18 |
#20 - 2-1/2"
(64 mm) |
4.91 in2
(3168 mm2) |
491 kips
(2184 kN) |
368 kips
(1637 kN) |
16.7 lbs./ft.
(24.8 Kg/M) |
2-3/4"
(69.9 mm) |
R61-20 |
#28 - 3-1/2"
(89 mm) |
9.61 in2
(6200 mm2)
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960 kips
(4274 kN)
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720 kips
(3206 kN) |
32.7 lbs./ft.
(48.6 Kg/M)
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3-3/4"
(95.0 mm)
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R61-28
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More detailed information on Williams Grade 75 All-Thead Rebar
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Williams / MAI Hollow Bar |
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| Anchor |
Outside
Diameter |
Internal
Diameter
(Average) |
Effective Cross
Sectional Area
(Average) |
Ultimate
Load
Capacity |
Yield
Load
Capacity |
Weight
per
Foot |
| R 38 |
1-1/2"
(38 mm) |
0.75"
(19 mm) |
1.11 in2
(716 mm2) |
112 kips
(498 kN) |
90 kips
(400 kN) |
4.0 lbs
(1.81 kg) |
| R 51L |
2"
(51 mm) |
1.42"
(36 mm) |
1.20 in2
(774 mm2) |
124 kips
(550 kN) |
101 kips
(450 kN) |
4.7 lbs.
(2.13 kg) |
| R 51N |
2"
(51 mm) |
1.30"
(33 mm) |
1.46 in2
(942 mm2) |
180 kips
(801 kN) |
142 kips
(630 kN) |
5.6 lbs
(2.54 kg) |
| T 76N |
3"
(76 mm) |
2"
(51 mm) |
2.84 in2
(1832 mm2) |
360 kips
(1601 kN) |
270 kips
(1201 kN) |
10.0 lbs
(4.54 kg) |
| T 76S |
3"
(76 mm) |
1.77"
(45 mm) |
3.72 in2
(2400 mm2) |
428 kips
(1904 kN) |
338 kips
(1503 kN) |
13.2 lbs
(5.99 kg) |
More detailed information on Williams / MAI Hollow Bar & Accessories |
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Williams / MAI Hollow Bar Hex Nuts & Couplings |
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Stop-Type Couplings |
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R62 Stop-Type Coupling
for Grade 75 All-Thread Rebar
ASTM A108
Nominal
Bar
Diameter |
Outside
Diameter |
Overall
Length |
Part
Number
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#14 - 1-3/4"
(45 mm) |
2-7/8"
(73.0 mm)
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7-7/8"
(200 mm)
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R62-14
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#18 - 2-1/4"
(55 mm) |
3-1/2"
(88.9 mm)
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9-1/8"
(233 mm)
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R62-18
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#20 - 2-1/2"
(64 mm) |
4"
(102 mm)
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9-1/2"
(241 mm)
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R62-20
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#28 - 3-1/2"
(89 mm) |
5-1/2"
(140 mm)
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12"
(305 mm)
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R62-28
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R72 Stop-Type Coupling
for 150 KSI All-Thread-Bar
ASTM A29, Grade C1045
Nominal
Bar
Diameter |
Outside
Diameter |
Overall
Length |
Part
Number
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1-3/4"
(46 mm) |
3"
(76 mm) |
8-1/2"
(216 mm) |
R72-14
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2-1/2"
(65 mm) |
4-1/4"
(108 mm) |
9-3/8"
(238 mm) |
R72-20
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3"
(75 mm) |
5"
(127 mm) |
11-7/8"
(302 mm) |
R72-24
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| Compression Sleeves are smaller in diameter than standard coupings and are offered for use in splicing steel reinforcement for compression-only micropile designs. Compression Sleeves offer the advantage of designing around smaller diameter casings. Compression Sleeves will not develop the full tensile strength of the bar. |
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Reducer Coupling |
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| Reducer Couplings are available to transition from a larger diameter bar to a smaller diameter bar. Reducer Couplings will develop the full ultimate strength of the bar. |
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Hex Nuts |
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R63 Hex Nut
for Grade 75 All-Thread Rebar
ASTM A108
Nominal
Bar
Diameter
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Across
Flats |
Thickness
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Part
Number
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#14 - 1-3/4"
(45 mm) |
2-3/4"
(73.0 mm)
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3-1/4"
(82.6 mm)
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R63-14
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#18 - 2-1/4"
(55 mm) |
3-1/2"
(88.9 mm)
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3-1/2"
(88.9 mm)
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R63-18
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#20 - 2-1/2"
(64 mm) |
4"
(102 mm)
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4"
(102 mm)
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R63-20
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* #28 - 3-1/2"
(89 mm) |
5-1/2"
(140 mm)
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6"
(142 mm)
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R64-28
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** Round nut with outside diameter of 6" (152 mm) |
R73 Hex Nut
for 150 KSI All-Thread-Bar
ASTM A29
Nominal
Bar
Diameter
|
Across
Flats |
Thickness
|
Part
Number
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1-3/4"
(45 mm)
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3"
(76 mm) |
3-1/2"
(89 mm)
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R73-14
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2-1/2"
(65 mm) |
4-1/4"
(108 mm) |
4-3/4"
(120 mm)
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R73-20
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** 3"
(75 mm) |
4-1/4"
(108 mm) |
6-1/8"
(156 mm)
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R74-24
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** Round nut with outside diameter of 5" (127 mm) |
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Steel Bearing Plates |
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PVC Centralizer |
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The Williams PVC Centralizer is used to center the assembly in the drill hole. They are usually spaced 8 to 10 feet apart along the bar. To order, specify drill hole diameter, bar size or the outer diameter of the sleeve, when used over the bar. |
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 Williams Form Engineering Corp. All rights reserved. |
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