EARTH ANCHORS | DUCKBILL
ANCHORS | DRIVER RODS
ANCHORS
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Click on picture to see enlarged photo.
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End Post wires attached to metal anchors hold the tension in the rows. Wire guards, available in many colors, are useful when applied to the anchor wires for visibility when running mechanical equipment in the rows. For wire tightening and repair devices go to Accessories for Wire. In some applications, driver rods rather than wire may be used with the anchors.
| EARTH ANCHORS | ||
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| DESCRIPTION | SIZE | |
| 1 | 636 EARTH ANCHOR | 36" X 6" |
| 2 | 648 EARTH ANCHOR | 48" X 6" |
| 3 | 848 EARTH ANCHOR | 48" X 8" |
| 4 | 860 EARTH ANCHOR | 60" X 8" |
| 5 | 866 EARTH ANCHOR | 66" X 8" |
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images/anchor_npost.jpg
| A.B. CHANCE ANCHOR - SPECIFICATIONS | |||||||
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| CATALOG
NUMBER |
OVERALL LENGTH |
ROD DIAMETER |
EYE-INSIDE DIAMETER |
HELIX DIAMETER |
HOLDING POWER IN NORMAL SOIL | PACKED | SHIPPING WEIGHT |
| 315SA | 15" | 7/16 | 1" | 3" | 200 lbs | 12/carton | 12lbs / carton |
| 330SA | 30" | 7/16 | 1" | 3" | 1,400 lbs | 12/carton | 22 lbs / carton |
| 430SA | 30" | 1/2" | 1" | 4" | 2,500 lbs | 12 each | 30 lbs / pack |
| 430TS | 30" | 11/16" | 1 1/2" | 4" | 2,500 lbs | 6 each | 24 lbs / pack |
EARTH ANCHORS | DUCKBILL ANCHORS | DRIVER RODS
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DUCKBILL Anchors & Drive Rods |
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DUCKBILL'S patented "Star Drive Point" drives straight into the ground at an angle and will not wander from its drive path. |
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Duckbill anchors are drive into the ground vertically with a minimum of penetration resistance which compacts and does not disturb the soil it pulls against once driven to the required depth, an upward pull on the cable planes (rotates) the Duckbill into a load lock position at approximately 15 degrees from horizontal. Further upward tension causes the anchor to plane sideways through the earth, against undisturbed soil, resisting pullout and increasing holding of power. |
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Duckbill anchors are especially useful when staking trees.
| Model Number | Holding Power in Normal Soil | SAFETY FACTOR Min. Cable Breaking Strength | Galvanized Steel Cable | Cable Length | Anchor Weight | Standard Pak And Weight |
| 40-DB1 | 300 lbs | 480 lbs | 1/16", 7 x 7 | 20" | 1 oz. | 50/box 3.7 lbs. |
| 68-DB1 | 1,100 lbs | 1,700 lbs | 1/8", 7 x 7 | 2 1/2 ft. | 4.5 oz. | 24/box 7 lbs. |
| ¹88-DB1 | 3,000 lbs | 7,000 lbs | 1/4", 7 x 19 | 3 1/2 ft. | 14 oz. | 12/box 11 lbs. |
| ¹138-DB1 | 5,000 lbs | 9,800 lbs | 5/16", 7x19 | 5 ft. | 2.5 lbs. | 12/box 32 lbs. |
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138 has a wear resistant thimble eye in top of loop. |
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EARTH ANCHORS | DUCKBILL ANCHORS | DRIVER RODS
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| ANCHOR APPLICATIONS | ||||
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| SOIL CLASSIFICATION DATA | ||||
| Class | Common Soil-type Description | Geological Soil Classification | Probe
Values in lbs. (Nm.) |
Typical
Blow Count ASTM-D1586 |
| 0 | Sound hard rock, unweathered | Granite, Basalt, Massive Limestone | N.A. | N.A. ROD - 50% |
| 1 | Very dense and/or cemented sands coarse gravel and cobbles | Caliche, (nitrate-bearing gravel/rock, weathered sandstone) | 750-1600 (90-208) |
60-100+ |
| 2 | Dense fine sand, very hard silts and clays (may be preloaded) | Basal till; boulder clay; caliche; weathered laminated rock | 600-750 (65-78) |
35-50 |
| 3 | Dense clays, sands and gravel; hard silts and clays | Glacial till; weathered shales, schist, gneiss and silstone | 500-600 (65-78) |
35-50 |
| 4 | Medium dense sandy gravel; very stiff to hard silts and clays | Glalacial till; hardpan; marls | 400-500 (52-65) |
24-40 |
| 5 | Medium dense coarse sand and sandy gravels; stiff to very stiff silts and clays | Saprolites, residual soils | 300-400 (39-52) |
14-25 |
| 6 | Loose to medium dense fine to coarse sand; firm to stiff clays and silts | Dense hydraulic fill; compacted fill; residual soils | 200-300 (26-39) |
7-14 |
| **7 | Loose fine sand; Alluvium; loess; soft-firm clays; varied clays; fill | Flood plain soils; lake clays; adobe; gumbo,fill | 100-200 (12-26) |
4-8 |
| **8 | Peat, organic, silts; inundated silts, fly ash | Miscellaneous fill, swamp marsh | less
than 100 (0-13) |
0-5 |
| Class 1 soils are difficult to probe consistently and the ASTM blow count may be of questionable value. | ||||
| ** It is advisable to install anchors deep enough, by the use of extensions, to penetrate a Class 5 or 6 underlying the Class 7 or 8 Soils. | ||||
EARTH ANCHORS | DUCKBILL
ANCHORS | DRIVER RODS
| APPLICATION
GUIDE POWER-INSTALLED SCREW ANCHORS |
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| HELIX DIAMETER (INCHES) |
SOIL-ANCHOR
HOLDING CAPACITY POUNDS |
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| CLASS 7 | CLASS 6 | CLASS 5 | CLASS 4 | CLASS 3 | CLASS 2 | CLASS 1** | |
| Single 6 | * | * | * | * | 12,000 | 24,000 | 36,000 |
| Single 8 | 7,000 | 8,000 | 10,000 | 14,000 | 29,000 | 24,000 | 36,000 |
| Single 10 | 9,000 | 12,000 | 16,000 | 20,000 | 24,000 | 28,000 | 36,000*** |
| Single 12 | 13,000 | 19,500 | 23,000 | 26,000 | 30,000 | 34,500 | * |
| Twin 4 | * | * | * | * | 12,000 | 24,000 | * |
| Twin 8 | 10,000 | 12,000 | 19,000 | 25,000 | 30,000 | 36,000 | * |
| Twin 10 | 10,000 | 19,000 | 25,000 | 30,000 | 36,000 | * | * |
| Holding capacities are based on the average of tests and offered as an application guide only. More specific data on the soils in any area can be obtained by contacting your Chance representative. | |||||||
| *NOT PRACTICAL TO INSTALL IN THIS SOIL CLASS | |||||||
| **LIMITED TO USE OF SQUARE ONE ANCHORS | |||||||
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*** HOLDING CAPACITY LIMITED BY STRENGTH OF 1" ROD |
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| ANCHOR ROD STRENGTH | |
| NORMAL ROD DIAMETER | ULTIMATE STRENGTH |
| 5/8" | 16,000 lbs. |
| 3/4" | 23,000 lbs. |
| 1" | 36,000 lbs. |
NOTE: The anchor rod is a basic part of the PSI system
and holding strength is limited by the strength of the rod
in many cases. Limitations imposed by rod strength are
shown in the table.
Copyright © 2003 Jim's Supply Co, Inc., 800-423-8016,
661-324-6514, jimssci@jimssupply.com
. All rights reserved.
Revised: January 10, 2008