Misc. Anchoring

Sledge Drive Anchors

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” menter 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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Grout Bonded Concrete Anchors

Williams’ grouted concrete anchors are post-installed bars utilizing a high strength grout for the bonding material. The advantage of using a grout versus and epoxy is cement grout does not break down in high heat areas and can be pumped into deep embedded holes easier than epoxy. The disadvantages are longer set times than epoxy and the bond stress may also be lower. Williams offers US Spec RA Grout (High Flow, Non-aggregate, Non-shrink grout) for cement grout bonded anchors. This product is manufactured by US Spec. Has excellent grout bond characteristics and quick set-up times. See page 51 for the RA Grout properties. Shown on the following pages are the various steels and corresponding hex nuts that are used for Williams Grout Bonded Concrete Anchors.

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Cast-in-Place Concrete Anchors

Williams Form Engineering can supply a wide range of cast-in-place concrete anchor systems. Ranging from Pigtails, J, U, and L-Bolts to a special post-tensionable anchor system that Williams has used on several high profile projects. Anchor design criteria for cast-in-place anchors can be found in ACI 318.

Stress Gradient Pigtail Concrete Anchor

Standard Lengths Radiused Lengths Safe
Working Load
(2:1 SF)
Ultimate
Strength
Diameter Total
Length
A B C
Total Length
3/8” – 8 NC
(9.5 mm)
12”
(305 mm)
4”
(102 mm)
10”
(254 mm)
22”
(559 mm)
4.9 kips
(22 kN)
9.8 kips
(44 kN)
1/2” – 13 UNC
(13 mm)
18”
(457 mm)
4”
(102 mm)
10”
(254 mm)
24”
(610 mm)
8.5 kips
(38 kN)
17 kips
(76 kN)
5/8” – 11 UNC
(16 mm)
24”
(610 mm)
6”
(152 mm)
12”
(305 mm)
30”
(762 mm)
14 kips
(60 kN)
27 kips
(120.6 kN)
3/4” – 10 UNC
(19 mm)
24”
(610 mm)
6”
(152 mm)
12”
(305 mm)
30”
(762 mm)
20 kips
(89 kN)
40 kips
(178 kN)
7/8” – 9 UNC
(22 mm)
30”
(762 mm)
8”
(203 mm)
14”
(356 mm)
36”
(914 mm)
28 kips
(123 kN)
55 kips
(246 kN)
1” – 8 UNC
(25 mm)
36”
(914 mm)
8”
(203 mm)
14”
(356 mm)
42”
(1067 mm)
36 kips
(162 kN)
73 kips
(323 kN)
1-1/8” – 7 UNC
(29 mm)
36”
(914 mm)
N.A. N.A. N.A. 41 kips
(180 kN)
81 kips
(360 kN)
1-1/4” – 7 UNC
(32 mm)
42”
(1067 mm)
N.A. N.A. N.A. 51 kips
(254 kN)
102 kips
(508 kN)
2” – 6 UN
(51 mm)
72”
(1829 mm)
N.A. N.A. N.A. 139 kips
(657 kN)
279 kips
(1313 kN)
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