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ENCYCLOPEDIA OF ANCHORING

POWER INSTALLED FOUNDATIONS,GUY ANCHORS AND INSTALLING EQUIPMENT

© Copyright 2004 HUBBELL / CHANCE — CENTRALIA, MO 65240

SECTION Dvisit http://www.hubbellpowersystems.com

E-mail: hpsliterature@hps.hubbell.comPhone: 573-682-5521 Fax: 573-682-8714

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Tower supportmethod that savesdays and dollars

Compared to traditional waysof constructing transmissiontower foundations, theChance power-installed,

screw-type foundation system offersattractive benefits in the conservation oflabor, materials and equipment. And,most importantly, it saves time.

Chance tower foundations for latticesteel, self-supporting structures usuallyinstall at the rate of twoto three towers per crewday. Single-elementfoundations for guyedtowers generally install atfive or six per crew day,including guy anchorinstallation.

If your rotary diggingequipment providesadequate torque anddown pressure, you caninstall Chance founda-tions. The only addi-tional elements neces-sary are Chance Kelly baradapter, torque indicatorand drive tool.

Chance foundations and guy anchors areinstalled in the same manner. You willsave on labor costs because smaller workand fewer crafts are involved. Unlikeconcrete, Chance foundations andanchors can be scheduled throughout

the year. Weather seldom stopsconstruction. There is no waiting forconcrete to cure, no excavation andno spoils removal. Towers can beerected immediately, so you save timeand eliminate returns to the site.

Chance foundations and anchors areideal in areas inaccessible forconventional construction, or whenweather limits construction time. They

are valuable forrapidly restoringservice in emergen-cies.

You can installChance foundationsand anchors in almostany type of terrain,including steepinclines, flood plains,glacial till, sand,swamps and bogs.Once the foundationsare in place, you canerect the tower usinga traditional construc-tion timetable. Youcan install Chance

foundations in wet and freezingconditions, as well as ideal weather.

The design of Chance foundationsystems adapt to site conditions. Yourcrews have many options available,should they encounter unusual orpeculiar installation situations.

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During the past 40 years,Chance expertise andresources have perfectedpower-installed foundationsand guy anchors supporting

many utility structures. You knowChance as the world's foremostauthority on earth anchoring. Nowyou can take advantage of Chance asthe leading innovator in power-installed foundations for the utilityindustry.

We encourage you to consult with usabout your tower foundation and guyanchor requirements. Partner withChance resources in the early stagesof your project. Chance engineers willanalyze your tower loads, soilconditions and construction methods.We'll then recommend the optimumtower foundation and guy anchorsystem.

Give your Chance representative the

load and soil information for yourproposed transmission project soChance foundation and anchorapplication engineers can conducta comprehensive evaluation. Basedupon the information provided, wewill conduct a study and recom-mend the system best suited to yourneeds.

It's a total civil constructionpackage. Our service includes thefoundations, the guy anchors andthe guy grips. . . not to mention theexperience and expertise to matchthe various parameters to the mosteconomical system type.

From choice of material to crewtraining, installing technique andtorque requirements, Chance has acomprehensive plan you can counton. Choose Chance foundationsand guy anchors for your transmis-sion towers. They're field proven,field respected.

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Designedfor adaptability

Simplicity of design is one of the greatestadvantages of Chance foundation andanchor systems. The basic foundation andanchor element consists of a multi-helixlead section designed to withstand specific

load torque. Extension sections can be added whichhelp permit the lead section to be driven to thenecessary depth.

More than 40 years of research, engineering, productdevelopment and testing by Chance have brought theart of power-installed foundations and anchors to itsmature state. Size and weight are no longer criteria forrating reliability. Advanced design, strength of steeland the science of soil mechanics combine to establishfoundation and anchor dependability.

Our foundations are designed to withstand the stress oftorsion, bending and shear. High-strength steel helixplates distribute the up-lift and compression forces.The pipe shaft transfers horizontal shear, torsion andbending to surrounding soils. Guy anchors aredesigned to withstand the tensile loads of guyedtowers.

Soil data for your tower sites is entered into ourgeotechnical anchor data bank. Using proprietarysoftware programs, Chance engineers then job-matcheach tower foundation and anchor to your specific soilcondition to achieve predictable holding strength. Youcan rely upon Chance foundations and anchors toperform as designed.

Based upon our years of combined experience servingthe utility industry, we know how to get the materialsyou need on-site, on time and ready to use.

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EXTENDABLE FOUNDATIONS

FOR DEEP-BEARING SOILS

Chance extendable foundations come in two types. TypeHS is a multi-helix lead section of 3-inch extra-heavy pipeshaft (7.6cm) to which additional extensions of the samesize diameter may be added if high lateral load-carryingcapacity is not required. Type TC is a similar-design leadsection with the same type helices used on Type HSfoundations plus extensions of 8-inch pipe (20.3cm) forresisting uplift, compression, bending and lateral loads.

APPLICATIONSExtendible foundations are especially applicable in areaswhere a high water table exists. Concrete foundationsrequire soil preparation prior to installation. On jobs withlow working clearances, such as when underpinning anexisting building, Chance extendable foundations are ideal.Light, temporary structures and prefabricated buildings alsohave been supported by foundations. Each foundationelement may be incorporated into a reinforced-concretegrade beam beneath the structure, or the foundation mayattach directly to metal beams which support a structure. Inmany instances, power-installed foundations can beinstalled using the same equipment used for drilledfoundations.

When encountering construction that demands lowinstalling noise levels, vibration control, minimum spoilsremoval or ground-water concerns associated withexcavation, look to removable and re-usable Chancepower-installed foundations.

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TYPE HS FOUNDATIONS

HS Extensions

Helix HelixCat. No. Length, ft. Length, m Config., in. Config., cmC107-0577 4 1.2 14 35.6C107-0579 7 2.1 14, 14 35.6, 35.6C107-0573 31/2 1.1 None NoneC107-0574 5 1.5 None NoneC107-0575 7 2.1 None NoneC107-0576 101/2 3.2 None None

11,000 ft.-lb. (15,000Nm) Torque Capacity

HS Extension Type HSFoundation

Guy Termination AdapterCatalog No. C111-0046

See page D8 for foundation grillages and connections.

HS Lead Sections

Helix HelixCat. No. Length, ft. Length, m Config., in. Config., cmC107-0561 41/2 1.4 10,12 25.4, 30.5C107-0562 41/2 1.4 12, 14 30.5, 35.6C107-0564 7 2.1 10, 12, 14 25.4, 30.5, 35.6C107-0565 61/2 2.0 12, 14, 14 30.5,35.6,35.6C107-0566 101/2 3.2 8, 10, 12, 14 20.3, 25.4, 30.5, 35.6C107-0567 101/2 3.2 10, 12, 14, 14 25.4, 30.5, 35.6, 35.6C107-0568 101/2 3.2 12, 14, 14, 14 30.5, 35.6, 35.6, 35.6

HS FOUNDATION TOOLTubular tool fits over end of 3-inch pipe(7.6cm pipe) Type HS foundation for powerinstallation. A throughbolt secures the tool tothe foundation for driving.

Cat. No. Weight, lb. Weight, kgC303-0754 15 7

Each high-strength foundation has a galvanizedmulti-helix lead section of 3-inch extra-heavypipe (7.6cm) to which extensions of the samesize may be added. HS foundations are used inapplications where compression and tensionloads with moderate lateral leads are encoun-tered. Various lead configurations and exten-sions allow flexibility in event of unexpectedsub-surface conditions.

CONNECTIONType HS lead sections and extensions connectby bolted couplings. Two types of terminationare available. One adapter accepts a threadedstud or L-Stud assembly for tension load. Theadapter is embedded in a concrete cap. Theother termination will accept a shackle orChance ADJUST-A-GRIP® deadend grips for guystrands. Other special connectors can befabricated on request.

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TC Lead Sections (3-inch/7.6cm Pipe)

Helix HelixCat. No. Length, ft. Length, m Config., in. Config., cmC107-0666 5 1.5 10,14 25.4, 35.6C107-0667 7 2.1 8, 10, 14 20.3, 25.4, 35.6C107-0668 7 2.1 10, 12, 14 25.4, 30.5, 35.6C107-0669 10 3.0 8, 10, 12, 14 20.3, 25.4, 30.5,35.6C107-0670 10 3.0 10, 12, 14, 14 25.4, 30.5, 35.6, 35.6

Tension/Compression Foundations havegalvanized lead sections and extensionsof 8-inch pipe (20.3 cm) for resistinguplift, compression and lateral loads. Seepage D6 for standardized componentsthat provide flexibility in joining founda-tion to superstructure. A conventional pilecap will work with TC Foundations.

CONNECTIONType TC members connect by boltedcouplers at the top of the multi-helix leadsection and each end of the extensionsection. For single-element foundations,two terminations are available. Bolted-Cap (to accept a shoe base or similarmeans to fit the superstructure) and StubAngle (grouted into the extension cavity).For multi-element foundations, connec-tions to transfer structural loads from thesuperstructure include the conventionalconcrete cap and metal grillages (ChanceTripod and Quadrupod designs forcompression loads which can be fieldwelded or bolted to also transfer tensionloads).

Installation tolerances are incorporatedinto the Bolted Cap and Metal Grillagedesigns. The Bolted Cap provides a ± 1.4inches (3.5 cm) of horizontal adjustment.In general, grillages permit ±2° from a 10°batter on each element. Grouted orconcrete connections provide consider-able flexibility in setting the Stub Angle orconventional anchor bolts in the pipecavity.

11,000 ft.-lb. (15,000Nm)

TYPE TC FOUNDATIONS

TC Extension Sections (8-inch/720.3cm Pipe)

Helix HelixCat. No. Length, ft. Length, m Config., in. Config., cmC107-0656 3 0.9 14,14 35.6, 35.6C107-0657 5 1.5 14, 14 35.6, 35.6C107-0658 7 2.1 14, 14 35.6, 35.6C107-0659 10 3.0 14, 14 35.6, 35.6

See page D8 for foundation grillages and connections.

TC FOUNDATION TOOLThis special tool has drive pinsthat insert into the bolt holes ofthe couplers on TC foundationanchor lead sections andextensions. Easy-release mecha-nisms permit quick changes foradditional extensions.

Cat. No. Weight, lb. Weight, kg.

C303-0594 38 17

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Tripod Grillages

Max. Compressive LoadCat. No. Description KIPS kgC107-000203 Tripod to fit on 3" Pipe (7.6cm) 125 56,700C107-001903 Tripod to fit on 3" Pipe (7.6cm) 150 68,000

C107-019203 Tripod to fit on 3' Pipe (7.6cm) 200 90,700

T107-027803 Tripod to fit on 3" Pipe (7.6cm) 250 113,400C107-000208 Tripod with (3) 8" Pipe Adapters (20.3cm) 125 56,700

C107-001908 Tripod with (3) 8" Pipe Adapters (20.3cm) 150 68,000

C107-019208 Tripod with (3) 8" Pipe Adapters (20.3cm) 200 90,700C107-027808 Tripod with (3) 8" Pipe Adapters (20.3cm) 250 113,400

Note: Grillages available on a made-to-order basis.

FOUNDATION GRILLAGES & CONNECTIONS

Tripod Grillages

Max. Compressive LoadCat. No. Description KIPS kgT107-030303 Quadrupod to fit on 3" Pipe (7.6cm) 350 158,800

C107-0004 Adapter for 8" Pipe (20.3cm)

Tripod Grillage

Quadrupod Grillage

Stub Angle

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INSTALLING EQUIPMENT

ANCHOR / FOUNDATION TORQUE HEAD

GENERAL CONSIDERATIONSTo select appropriate anchor-installingequipment, first consider two basicrequirements: Sufficient torque capacityand sufficient ground clearance at out-putshaft. Other criteria that deserve advanceattention include: Material-handlingcapability, site limitations to overheadclearance, mobility (consider self-propelled vs. carrier-mounted and trackedvs. wheeled vs. floating).

For the requirements on a specific job,also consider the characteristics of twobasic types of foundation-installingmachinery. Guided-head installers offerexcellent control over foundation

positioning and alignment: suppliersinclude Acker, Highway, Hughe, ICE,Sterling, Texoma and Williams. Articu-lated-head installers usually suspend thetorque head on a boom which also canbe used to handle materials at the job site:suppliers include Altec, Caterpillar,Deere, Telelect and Wajax.

Specially suited for installing all screw-type anchors and foundations by suchhydraulic equipment as backhoes, thetorque head comes in three torque-ratingranges. The design also delivers otherfeatures for rugged field conditions:

■ Precision planetary gears andbearings in oil-filled, sealed gearcase;

■ Heavy-duty output housing andbearings;

■ Backhoe bracket with dual-pinmounting provides drive-headpositioning for controlled installa-tions;

■ Heavy-duty bail flange mounted togearcase housing provides balancedload-sharing torque restraint;

Torque head also readily accepts earthaugers for hole digging.

Hose assemblies are not furnished withtorque heads. For hydraulic flow morethan 20 gpm (76 liters/min.) 3/4" diameterhose (1.9cm hose) is recommended. Forflow rates of 20 gpm (76 liters/min.) andbelow 1/2" hose (1.3cm hose) may beused. Swivel joint and swivel jointadapter are furnished. Thread size is 1"-111/2" NPSM (National Pipe StraightMechanical).

■ HYDRAULIC, VEHICLE-MOUNTED

■ 3,500 FT.-LB. (4,700Nm),6,000 FT.-LB. (8,100Nm),& 12,000 FT.-LB. (16,000Nm)TORQUE RATINGS

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ANCHOR/FOUNDATION TORQUE HEAD CONT.

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Anchor/Foundation Torque Heads

Catalog Running Torque Running Torque Flow Speed Wt. Wt. Dimensions (in., cm)Number ft.-lb. Nm gpm rpm lb. kg A B C D E FC303-0926 3,500 @ 2,000 psi 4,700 @ 140 BARS 20 28 151 69 1.0 2.54 26 66.0 8.5 21.6 11 27.9 8.75 22.2 2 5.1

C303-0927 6,000 @ 2,400 psi 8,100 @ 165 BARS 40 39 246 112 1.5 3.81 29.5 74.9 10.7 27.2 13 33.0 11.4 28.9 2.5 6.4

C303-0928 12,000 @ 2,400 psi 16,000 @ 165 BARS 40 20 246 112 1.5 3.81 29.5 74.9 10.7 27.2 13 33.0 11.4 28.9 2.5 6.4

Mounting Brackets

Backhoe Catalog Bracket BracketName Number Description DescriptionCase C303-0969 6,000 & 12,000 ft.-lb. Eskridge 8,100 & 16,000Nm Eskridge

Case C303-0970 3,500 ft.-lb. Eskridge 4,700Nm Eskridge

JCB C303-0971 6,000 & 12,000 ft.-lb. Eskridge 8,100 & 16,000Nm EskridgeJCB C303-0972 3,500 ft.-lb. Eskridge 4,700Nm Eskridge

J. Deere C303-0973 6,000 & 12,000 ft.-lb. Eskridge 8,100 & 16,000Nm Eskridge

J. Deere C303-0974 3,500 ft.-lb. Eskridge 4,700Nm Eskridge