Williams Form Engineering Corp. Williams Form Engineering Corp.
Williams Form Engineering Corp.
DownloadsDownloadsWhat's NewContact UsAbout UsWilliams Form Engineering Corp.
Ground Anchor Systems
Concrete Anchor Systems
Post Tensioning Systems
Threaded Bars with Fasteners
Tie Rods & Tie Backs
Micro Piles
Concrete Forming Hardware Systems
Williams products are made in the USA

Spin-Lock Mechanical Rock Anchor Systems

Spin-Lock
Information
Parts &
Accessories
Head
Assemblies
Spin-Lock Installation
Installation
Equipment
Case
Histories
Corrosion
Protection
R1H High Grade Hollow-Core Spin-Lock R1S High Tensile Spin-Lock
R1J Solid Rebar Spin-Lock R1V High Impact Spin-Lock
R7S 150 KSI Spin-Lock B7S Coil All-Thread Spin-Lock
Spin-Lock Accessories Spin-Lock Anchor Head Assemblies
Spin-Lock Installation Procedures Spin-Lock Installation Equipment
Spin-Lock Torque Tension Charts  
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
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.
Method A
Anchor is pre-stressed to rock and used in thin slab locations.
Method B
Less expensive method. Used where pre-stressed rock is anchored to large slabs or footings.
Method C
Exposed nut and plate where slab is pre-stressed to rock.
Method D
Non-exposed nut and plate where pre-stressed slab is required to have flush anchor.
Spin-Lock Rock Anchor Specifications
For a detailed breakdown of the parts and components involved in resin anchoring, click on the image to the right. Spin-Lock Rock Anchor Specifications
Williams Form Engineering Corp.
Spin-Lock
Information
Parts &
Accessories
Head
Assemblies
Spin-Lock Installation Installation
Equipment
Corrosion
Protection
Case
Histories
Contact Us Home
Williams Form Engineering Corp. All rights reserved.