|
|
|
Manta Ray Mechanical Soil Anchor Installation
|
|
|
|
|
|
 |
|
|
 |
 |
 |
| 1. Thread anchor rod into Manta Ray |
2. Insert drive steel into anchor |
3. Position anchor at proper location and angle |
 |
 |
 |
| 4. Drive anchor to proper depth |
5.Remove drive steel |
6. Use load locker to proof load anchor into locked position |
|
|
|
Once driven to the proper depth, the driving tool is removed and the rod or tendon that is attached to the anchor is pulled to rotate the anchor into position and load it against undisturbed soil, like a toggle bolt. This loading operation is carried our using the anchor locker which provides a direct readout of anchor capacity and proof loads the anchor immediately. Grouted anchors can not offer this feature. |
|
|
 |
|
|
Installation Equipment |
|
|
|
Drive Steel:
Drive steel and accessories are available for all Manta Ray and Stingray anchors in basic lengths of 3 feet, 6 feet, and 8 feet. Multiple sections are coupled together with specialized couplers to achieve the required depth of installation. Manta Ray and Stingray drive steel are not interchangeable.
Load Locking Kits:
For Manta Ray, the LL-1 is a 10-ton fast acting jack with an 8 inch stroke. The direct reading gauge and rod gripping jaws make load locking easy and quick. The base and jack are self-aligning to the actual installed angle of the anchor. It requires an open center hydraulic flow of 2 to 8 gallons per minute and a maximum pressure of 2,000 psi. A power supply is not included with this load-locking kit, it must be provided separately. Models GPU18-8 or GPU-2 are suitable.
For Stingray, the SR-LLK is a 60-ton double acting jack with a 10 inch stroke, which includes a hydraulic power supply. It is available in two models, one for tower guy anchors and one for retaining wall tieback anchors. |
|
|
|
|
|
|
|
|
|
Installation Methods |
|
|
|
Vehicle Mounted Breakers or Compactors:
Boom mounted demolitions or compactions are very effective for driving Manta Ray and Stingray anchors. This method requires a special tool in the breaker or a socket welded to the bottom of the compactor to hold the drive steel. Skid steer loaders, backhoes or excavators work well. 4,000 to 16,000 lb. Vehicles with 250 to 500 foot-pound pavement breakers are best for Manta Rays, and 16,000 to 30,000 lb. vehicles with 500 to 1,000 foot-pound pavement breakers are best for Stingrays. Breaker tools and vibro sockets are available upon request. |
 |
Rock Drills:
Top hammer or down-the-hole hammer rock drills are very effective for installation of Manta Ray and Stingray anchors. For hard soil or weak rock installations, the drill can be used to drill a pilot hole. Williams can provide striker bar adapters for these types of drills. Rock drilling steel can also be modified to drive Manta Rays and Stingrays.
Manual Installation:
In some applications, Manta Ray anchors are driven into the soil with a 90 lb. pavement breaker and coupled drive steel. Pneumatic or hydraulic breakers are acceptable, but a 90 lb. weight class breaker is necessary. Manual installation of Stingray anchors is not recommended. |
|
|
|
|
|
|
 |
|
|
|
|
|
|
|
|
 Williams Form Engineering Corp. All rights reserved. |
|
