Post on 03-Jun-2018
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U T I L I T Y P O L E S
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StressCrete is the registered trade mark
of StressCrete Ltd., an Ontario corpora-
tion and StressCrete Inc., an Alabama
corporation. StressCrete poles have
been in use throughout North Americasince 1953.
It is our objective to use the most
advanced technical knowledge available,
plus state of the art equipment to manu-
facture the highest quality product pos-
sible. It is also our goal to offer our cus-
tomers the highest level of service and
technical backup possible. Our product
is available through an experienced and
PRIDE INOUR PEOPLE. PRIDE INOUR PRODUCT.
well educated team of manufacturers
agents who service utility, contractor
and distributor accounts.
Our product is a centrifugally cast rein-forced concrete pole; commonly referred
to as a Spun Pole. It combines ele-
gance with durability and surpasses most
other materials in economy. It meets the
CSA and ASTM standards for spun con-
crete poles, as well as our own specifica-
tions which are more demanding. The
spinning process introduces qualities
into the concrete which cannot be
obtained by more conventional casting
methods. It provides a higher density and
greater strength concrete which is more
resistant to freeze-thaw and scaling by
de-icers. As well, the centrifugal casting
process automatically forms a hollow
raceway inside the pole thereby providing
a smooth conduit for electrical cables.
All our poles are custom made whatev-
er the design. An individual work order is
issued to the plant, a copy is sent to thecustomer and one held in our files.
Production is geared to your order
specification and delivery requirements.
Poles are readily available in a full
range of lengths, strengths, colors, finish-
es and cross-sections for a multitude of
uses such as lighting, power distribution,
transmission, traffic, traction and commu-
nication towers.
Most poles may be equipped with steel
base plates for flush mounting installations,
although direct embedment is the norm.
Our Companies
Our Policy
Our Product
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engineering staff will be pleased to assist you inestablishing and designing for the appropriate loads.
There are three common ways used to select poles fordistribution and transmission use. As all our products arecustom designed, owners have a choice as to theirpreferred method.
Satisfying the Applied Design Loads
Spun Concrete - The Ideal Utility Pole
A Spun concrete pole like any pole supportingconductors, has loads applied by line tension, changesof line direction, wind, and where applicable, ice load-ings on both the conductors and the pole itself.
Because of their durability and reliability, spun concretepoles have a favorable load factor specified in ANSItransmission and distribution line requirements. Our
The crisp clean lines and light gray color of spun concrete poles are pleasing tothe eye.
Spun concrete poles give a street a more formal look than wood poles. This projectsa progressive image for both the utility and the municipality and enhances the valueof adjoining property.
Appearance
Experience has shown, that during its long life, a spun concrete pole ismaintenance free.
Concrete, unlike other materials, suffers no loss of strength over the years, beingresistant to woodpeckers, insects, fire, rot and corrosion.
Its durability in soil permits the economy of direct burial without the use ofcontaminating chemical treatments.
As an inert material, it can be recycled or accepted as clean fill, when its longlife is over.
Durability
Spun concrete poles are manufactured in a wide range of strengths and sizes, to fillmany needs.
By choosing appropriate classes, angle and termination poles can remain unguyedthereby saving space and eliminating clutter.
Spun concrete poles are manufactured to guaranteed minimum strengths, takingthe guess work out of line design.
Strength & Availability
The hollow raceway of spun concrete poles makes them ideal for joint useapplications, such as streetlighting, telephone and cable TV.
The ability to add handholes and wiring access openings increases versatility. Exact placement of prefabricated holes, inserts or couplings can reduce rigging
time by as much as 50%. In highly visible areas, where a particular architectural appearance is critical, a
Decor color can be supplied. As a manufactured product spun concrete poles are readily available, and supply
does not depend upon the vagaries of nature. The stiffness of spun poles make them particularly suitable for angle and
termination poles subjected to permanent transverse load.
Added Features
The use of spun concrete poles for electrical power transfer has many advantages over other materials.
Since 1953
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When concrete poles are substituted in areas where theprior experience has been obtained using wood poles, itis important to note the following:
Because wood is a naturally grown product, with naturaldefects, such as splits and knots, strength is defined as
the average strength of all poles of that species anddimension, at the time of installation. Since some polesin a batch will have strengths less than the average (upto 30% less) and since there is a further deteriorationwith time, a particular wood pole could have a strengthof only one half the specified average new strength ofthe class.
A. Selection by Experience
B. Selection by Tip Load Computation
In contrast, the strength of concrete poles is defined asa minimum strength, which does not vary with time.Poles are designed and manufactured so that all poleswill exceed the specified minimum strength which willbe present for the life of each pole.
In theory, therefore, concrete poles strengths could benumerically specified as half of those specified for awood pole line and be equally effective when installed.In fact, most owners do not go this far. It is commonpractise to specify a concrete pole, which has anumerical strength value two classes lower than wouldbe traditionally used for a similar wood pole application.
Poles are grouped in alphabetically labelled classes
which have a bending capacity appropriate to the designrequirements.
The class is defined in terms of a guaranteed minimumultimate transverse load applied 2 ft. down from the tipof the pole. All poles which can sustain the same tip loadhave the same class. This should not be confused withthe classification systems used with other materials suchas wood. As explained in the previous section "SelectionBy Experience" wood poles are classed according to anaverage, not minimum ultimate transverse load as withspun concrete.
The ground line moment capacity will, of course, depend
on the length of the pole, since that moment is theproduct of the class ultimate load and the distancebetween the point of application (2 ft. from the tip), andthe ground line.
Nevertheless, for applications where all poles havethe same or similar length, some owners have becomeaccustomed to the practise of specifying ground linemoment, when ordering. If so requested we will bepleased to fill orders placed this way.
CDEFGH
120015001900240030003700
5.36.78.510.713.316.5
JKLMNO
4500540064007500870010000
20.024.028.533.438.744.5
Class Min. UltimateTransverse load
(lbs.) (KN)
Class Min. UltimateTransverse load
(lbs.) (KN)
Standard Spun Concrete Utility Pole Classes
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NOTES:
1. ALL LOADS SHOWN IN POUNDS2. ALL LOADS INCLUDE APPROPRIATE LOAD OCF'S.3. IN ADDITION TO THE LOAD CONDITIONS SHOWN THE
STRUCTURE SHALL WITHSTAND:A. A 10 PSF WIND APPLIED TO THE POLE SHAFT
& ALL ATTACHMENTS AT THE MOST CRITICALDIRECTION, WITH NO WIRES ATTACHED.
B. A HORIZONTAL LOAD OF 2800 POUNDS PERPENDICULARTO THE OF THE INSULATORS & APPLIED AT THEWIRE ATTACHMENT POINT. APPLY TO ANY ONE INSULATOR.
C. A VERTICAL LOAD OF 2800 POUNDS AT THE END OFANY ONE INSULATOR.
4. DEFINITION OF LOAD DIRECTION:
VERTICAL LOAD
HORIZONTAL LOAD ALONG THE X-AXIS,PARALLEL TO THE OF INSULATOR.
HORIZONTAL LOAD ALONG THE Y-AXIS,PERPENDICULAR TO OF INSULATOR.
5. "WIND ON POLE" LOAD SHALL BE APPLIED UNIFORMLYALONG THE POLE SHAFT AT THE MOST CRITICAL HORIZONTALDIRECTION.
CL
For higher voltage lines, with large conductor spacingsand multiple circuits, there may be major reactionsdistributed over a substantial length of the pole. Theremay also be many different load combinations along aline, depending on pole spacing and line angles.
For such applications it is usual for the customer to
order by specifying a "load tree", for each pole loading
C. Selection by Load Tree
Example of Typical Load Tree
variation along the line. Alternatively, we can computesuch a tree from data provided by the purchaser.
We have a standard computer program set up to acceptmultiple elevations at which loads can be applied, sothat the required capacity of the pole can be accuratelycomputed along its whole length. We will be pleased, to
discuss the use of this program to meet any individualowners specification.
CL
CL
450
10 PSF ONPOLE
GROUNDCLEARANCE
EMBE
DMENT
7' 0"
41' 9"
6' 0"
6' 0"
9' 0"
450
450
740
740
740
450
620
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PoleCatalogueNumber
Spun Concrete Distribution Poles
Distribution Poles
Spun concrete distribution poles are generally selectedby strength class (Tip Load Computation). We stronglyrecommend you read "Satisfying The Applied DesignLoads" located on the previous page.
While it is standard practise to locate and cast neededholes, apertures, inserts etc. at the time of production,many utilities minimize the likelihood of future fielddrilling by adding extra holes to allow for later expansion
of the service. This practise can appreciably add to thealready considerable versatility of spun concrete polesand is both simple and inexpensive.
The catalogue numbers of the more common sizes andstrength classes along with accompanying technicaldetails are shown below. If the pole you require is notshown, please call your local representative or our salesoffice.
E - 300 - CPR - G
E - 300 - DPR - G
E - 300 - EPR - G
E - 300 - FPR - G
E - 350 - CPR - G
E - 350 - DPR - G
E - 350 - EPR - F
E - 350 - FPR - G
E - 400 - CPR - G
E - 400 - DPR - G
E - 400 - EPR - G
E - 400 - FPR - G
E - 450 - DPR - G
E - 450 - EPR - G
E - 450 - FPR - G
E - 450 - GPR - G
E - 500 - DPR - G
E - 500 - EPR - G
E - 500 - FPR - G
E - 500 - GPR - G
E - 500 - HPR - G
E - 550 - DPR - G
E - 550 - EPR - G
E - 550 - FPR - G
E - 550 - GPR - H
E - 550 - HPR - G
E - 600 - FPR - G
E - 600 - GPR - G
E - 600 - HPR - G
E - 650 - FPR - G
E - 650 - GPR - G
E - 650 - HPR - G
E - 700 - FPR - G
E - 700 - GPR - G
E - 700 - HPR - G
30' 0"
30' 0"
30' 0"
30' 0"
35' 0"
35' 0"
35' 0"
35' 0"
40' 0"
40' 0"
40' 0"
40' 0"
45' 0"
45' 0"
45' 0"
45' 0"
50' 0"
50' 0"
50' 0"
50' 0"
50' 0"
55' 0"
55' 0"
55' 0"
55' 0"
55' 0"
60' 0"
60' 0"
60' 0"
65' 0"
65' 0"
65' 0"
70' 0"
70' 0"
70' 0"
C
D
E
F
C
D
E
F
C
D
E
F
D
E
F
G
D
E
F
G
H
D
E
F
G
H
F
G
H
F
G
H
F
G
H
27.6
34.5
43.7
55.2
33.0
41.2
52.2
66.0
38.4
48.0
60.8
76.8
54.7
69.3
91.2
109.5
61.5
77.9
98.4
123.0
151.7
68.2
86.4
109.2
136.5
168.3
120.0
150.0
185.0
130.8
163.5
201.6
141.6
177.0
218.3
5
4
3
2
5
4
3
2
5
4
3
2
4
3
2
1
4
3
2
1
H1
4
3
2
1
H1
2
1
H1
2
1
H1
2
1
H1
25' 0"
25' 0"
25' 0"
25' 0"
29' 6"
29' 6"
29' 6"
29' 6"
34' 0"
34' 0"
34' 0"
34' 0"
38' 6"
38' 6"
38' 6"
38' 6"
43' 0"
43' 0"
43' 0"
43' 0"
43' 0"
47' 6"
47' 6"
47' 6"
47' 6"
47' 6"
52' 0"
52' 0"
52' 0"
56' 6"
56' 6"
56' 6"
61' 0"
61' 0"
61' 0"
5' 0"
5' 0"
5' 0"
5' 0"
5' 6"
5' 6"
5' 6"
5' 6"
6' 0"
6' 0"
6' 0"
6' 0"
6' 6"
6' 6"
6' 6"
6' 6"
7' 0"
7' 0"
7' 0"
7' 0"
7' 0"
7' 6"
7' 6"
7' 6"
7' 6"
7' 6"
8' 0"
8' 0"
8' 0"
8' 6"
8' 6"
8' 6"
9' 0"
9' 0"
9' 0"
6.5"
6.5"
6.5"
6.5"
6.5"
6.5"
6.5"
6.5"
6.5"
6.5"
6.5"
6.5"
6.5"
6.5"
6.5"
8.25"
6.5"
6.5"
6.5"
8.25"
8.25"
6.5"
6.5"
6.5"
8.25"
8.25"
6.5"
8.25"
8.25"
6.5"
8.25"
8.25"
6.5"
8.25"
8.25"
11.9"
11.9"
11.9"
11.9"
12.8"
12.8"
12.8"
12.8"
13.7"
13.7"
13.7"
13.7"
14.6"
14.6"
14.6"
16.35"
15.5"
15.5"
15.5"
17.25"
17.25"
16.4"
16.4"
16.4"
18.15"
18.15"
17.3"
19.05"
19.05"
18.2"
19.05"
19.05"
19.1"
20.85"
20.85"
1740
1755
1760
1955
2225
2250
2280
2435
2685
2715
2745
3000
3220
3230
3560
4235
3850
3865
4150
4970
5060
4455
4480
4900
5750
5875
5680
6550
6675
6310
7440
7510
7255
8365
8445
NominalPole
Length(ft.)
UltimateMomentAt Grade(K - ft.)
Equiv.Wood
PoleClass *1
AboveGradePole
Height(ft.)
BurialDepth *2
PoleTip(in.)
DiameterButt(in.)
NominalPole
Weight(lbs.)
ConcretePoleClass
TYPICAL POLECROSS-SECTION
TYPICAL 45' CLASS E JOINTUSEDISTRIBUTION POLE
* 1 Please read the section "Satisfy the Design loads" especially - "Selection by Experience".
* 2 Burial Depths are assumed at 10% of pole length plus 2 ft.
SLACKLONGITUDINALREINFORCEMENT
MOLD SEAMLINE
SPIRAL REINFORCEMENT
PRESTRESSEDSTAND
Since 1953
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desired, the internal raceway may be used to carry thecables rather than banding them to the outside of thepole: this greatly improves appearance. The poles canalso accommodate fuses, arresters and switchgear ifrequired. Non-guyed poles can be designed to accept
angles of up to 90.
If unfamiliar with designing poles of this type, pleasecontact our sales office so the correct pole for yoursituation can be determined. For poles with highimbalanced loads, foundations to suit the load and soilconditions must be considered.
Unguyed Terminal and Angle Poles
High Voltage Transmission Poles
In areas where unsightly back guys are eitherundesirable or impractical, a self-supporting spunconcrete pole is the solution. Spun concrete poles canbe designed and built to such great strengths that theneed for back guying is unnecessary. They give a clean
uncluttered look to the pole line, and minimize landuse as they do not impede walkways, violate privateproperty nor require overhead guys to be strung acrossroadways.
Non-guyed termination poles lend themselves to apleasing transition from overhead to underground. If
Spun concrete pole designs are exceptionally versatile
and an almost unlimited selection of heights andstrengths is available. Spun concrete transmission polesare generally single pore or H-Frame structures.
H-Frame poles are usually selected by strength class(Tip Load Computation) and since concrete poles aregenerally replacing damaged wood poles, the concreteclass can be determined by the owner's previousexperience with wood poles. Please read "Satisfying TheApplied Design Loads" in particular entitled "SelectionBy Experience" located earlier in this section.
Single pole transmission structures, due to the
complexity of the loads being applied are generallycustom designed to individual requirements. It iscommon for the customer to make available a "load treediagram", for each pole loading variation or to supply thedata from which such a "load tree" can be computed.
We would be pleased to consult with you regardingyour needs in this area. Please contact your localrepresentative or call one of our sales offices.
LADDERLUG DETAILHOT DIPPED GALV. STL. ASTM A36, 36 KSI MIN. YIELD STRENGTH
POLEFEATURES
POLESTRUCTURE
SECTION A-A SECTION B-B
Typical Transmission Pole Layout
SPECIFICATIONS
POLE LENGTH
QUANTITY REQUIRED
TIP O.D.
BUTT O.D.
TAPER
NO. OF STRANDS
SIZE OF STRAND
INITIAL PULL PER STRAND
RAM AREA OF JACK
GAUGE READING
MAKE UP REBAR
QUANTITY
SPIRAL
28 DAY STRENGTH/DET. STR.
CONCRETE VOLUME
WEIGHT
CENTRE OF GRAVITY
67' 0"
50
8.25"
19.95'
.18"/LIN/FT.
6
1/2" - 270KSI
13183 Kg
43.3 CM2
320 Kg/cm2
5/8" REBAR 80,000 PSI
(4) - 17'
(4) - 32'
.150 O.D. GALVANIZED
8,000 PSI
48 CU. FT.
7,620 lbs.
45' FROM TIP
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ANOMINAL
HOLE DIA.
Through Holes
Handholes and Coverplates
Wiring Apertures
Utility Pole Accessories
STANDARD HOLE POSITIONING IS 45"TO THE MOLD SEAM LINE. LONGITUDINALREINFORCING STEEL IS POSITIONED AWAYFROM THESE AREAS TO ALLOW FOR FIELDDRILLING IF NECESSARY. WE DO HOWEVERRECOMMEND THAT ALL HOLES BE CASTIN AT TIME OF MANUFACTURE. THIS ISESPECIALLY SO FOR HOLES REQUIREDOFF THE 45" LINE.
OUR STANDARD HANDHOLES ARE COMPOSED OF NON-METALLIC, NON-CONDUCTIVE INJECTION MOLDED MATERIAL AND ARESUPPLIED WITH A CLOSE FITTING INSET COVER OF THE SAME MATERIAL. ALL FASTENERS WILL BE STAINLESS STEEL.
STANDARD
SIZES
1/2"
3/4"
1"
OUR STANDARD HOLE SIZES ARE 1/2", 3/4" AND 1" NOMINAL SIZE.
225
180
135 45
315
0 MOLD SEAM
CLOSEFITTINGCOVERPLATE
STAINLESS STEELFASTENERS
CASTIN HAND HOLE
FRONT VIEW CROSS SECTION
TYPICAL CROSS SECTION
* AVAILABILITY MAY BE GOVERNEDBY DESIGN LIMITATIONS OR PHYSICALCONSTRAINTS.
STANDARD
SIZES
A x B
2 1/2" x 8"
3 1/2" x 10 1/2"
ROUND
APERTURES
A DIA.
1 1/4" DIA.
1 1/2" DIA.
SHAPED
APERTURES
B x C
1 1/2" x 3"
2" x 3"2 1/2" x 5"
3" x 12"
4" x 10"
* 6" x 24"
"A"
"A" DIA. "A" DIA.
"A"
"B"
"C"
"B"
FRONT VIEW CROSS SECTION
ROUNDAPERTURE
CABLEENTRY
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Pole Steps
Ladder System (Ladder by Others)
Ladder System (Supplied by StressCrete)
STEPS ARE SET AT 180 TO EACH OTHER EXCEPT ON THE LARGER POLES WHERE THEY MOVE TO 120AT THE POINT WHERE THE POLE DIAMETER SURPASSES 19".
CLIMBING LADDERCAT. NO.: "CL72"*
WORKING LADDERCAT. NO.: "WL72"*
LADDERCLIP
1 1/2"
3 1/2"
1 5/8"
5/8" MIN.
5"
16"16"
72"72"48"
12 3/4"
11 1/4"
LADDER STEP
MOUNTINGLEG
LADDER LUG DETAILHOT DIPPED GALV. STL.
DETAILED BELOW ARE STANDARD TYPES. SPECIFIC L ENGTHS ARE AVAILABLE UPON REQUEST.
* INDICATES LADDER LENGTH IN INCHES. LENGTH MAY VARY WHEN NECESSARY. SIMPLY CHANGE THIS NUMBER TO DESIRED LENGTH.
LADDER CLIP
1/2" BOLT
1/2" INSERT
GALVANIZED 5/8" x 7"LONG STEP BOLTS
COMPLETE WITH LOCKINGNUT, ON 15" CENTERS
CAT. NO.: "PS"
15"
48"typicalspacing
LADDER CLIPSONLY (LADDERBY OTHERS)
CAT. NO.: "LC"
Since 1953
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Cast Aluminum Cable Entrance Covers
Electrical Grounding
Attachment of Grounding System
THE INTERNAL RACEWAY OF SPUN CONCRETE POLES ALLOWS FOR WIRES AND CABLE TO BE RUN INTERNALLY. TO GIVE ANEVEN, SMOOTH TRANSITION WE CAN SUPPLY CAST ALUMINUM CABLE ENTRANCE COVERS WHICH WILL ACCEPT LINES OF 2"DIA. THIS IS VERY POPULAR ON TERMINATION POLES INTO SUBSTATIONS. -SO CLEAN, SO NEAT, SO SIMPLE!!
WHERE ELECTRICAL CONDUCTIVITY IS CONCERNED, A CONCRETE POLE IS IN ESSENCE A STEEL POLE, THUS WE STRONGLYRECOMMEND THAT IT BE GROUNDED. THE LAST LETTER "G" IN THE POLE CATALOGUE NUMBER MEANS THE POLE WILL BESUPPLIED WITH A MEANS TO ELECTRICALLY GROUND IT. DETAILED BELOW ARE TWO METHODS BOTH APPROVED BY THE(CSA) CANADIAN STANDARDS ASSOCIATION.
17"
STANDARD GROUND IN HANDHOLE EXTERNAL GROUND
EXTERNAL
POLE INSERT
SECTIONAL VIEW
CLIP
INTERNAL
GRADE
GROUND WIRE(BY OTHERS)
GROUND WIRE(BY OTHERS)
GROUNDWIRE CLIP
SPACED APPROX.EVERY 10'
ENSURE POLEIS ELECTRICALLY
GROUNDED AS WELL
CAT. NO.: "SBC-25"
CAT. NO.: "IGS" CAT. NO.: "EGS"
#6 COPPERGROUND WIRE
#6 COPPERGROUND WIRE
GROUND LUG TOACCEPT 1/2"GROUND STUD BYOTHERS
OPTIONAL BRASSSPLIT BOLTCONNECTOR (SCREWSINTO 1/2" EXTERNALGROUNDING LUG)
COVERPLATE
HANDHOLE BOX
SECURLEY BONDED TO ACONTINUOUS STEEL BAR
SECURLEY BONDED TO ACONTINUOUS STEEL BAR
CABLE ENTRANCECOVERCAT. NO.: "ACE"
CABLEENTRY
SHAPEDAPERTURE
TYPICAL POLE LAYOUT
2" DIA.OPENING
1/4"INSERTS(ENTRANCE COVER
FASTENERS)
OTHER ACCESSORIES SUCH AS CROSS ARMS, INSULATOR BRACKETS OR ARMS ARE AVAILABLE. FOR MORE INFORMATION PLEASE CONTACT YOUR LOCALREPRESENTATIVE OR ONE OF OUR SALES OFFICES.
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Since 1953
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www.kingluminaire.com www.stresscrete.com
O N TA R I O
M I S S O U R I
O H I O
K E N T U C K Y
A L A B A M A
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I O W A
M I N N E S O TA
A R K A N S A S
T E X A S
O K L A H O M A
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B
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M A I N E
V T
WEST
VIRGINIA
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LOSANGELES
RENO
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SEATTLE
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BOISE
VANCOUVER
EDMONTON
CALGARY
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PROVO
TUCSON
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COLORADO SPRINGS
SANANTONIO
OKLAHOMACITY
WICHITA
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SIOUXFALLS
WINNIPEG
SASKATOON
REGINA
MINNEAPOLIS/ST.PAUL
GREENBAY
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DESMOINES
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LITTLEROCK
SPRINGFIELD
MADISON
NEWORLEANS
JACKSON
MIAMI
TAMPA
JACKSONVILLE
HOUSTON
CHARLOTTE
RICHMONDCHARLESTON
DETROIT
FRANKFORT
CLEVELAND
ERIE
BALTIMORE
PITTSBURGH
KNOXVILLE
AUGUSTABURLINGTON
OTTAWA
TORONTO
CONCORD
ROCHESTER
BOSTON
SAVANNAH
CHARLESTON
MONTGOMERY
COLUMBUS
MONTREAL
QUBECCITY
DULUTH
CHICAGO
ST.LOUIS
DALLAS
WINDSOR
Burlington
Jefferson
Atchison
Northport
840 Walkers Line, P.O. Box 7Burlington, Ontario L7R 3X9(905) 632-93011-800-268-7809Fax: (905) 632-8116
1153 State Route 46 NorthP.O. Box 266Jefferson, Ohio 440471-800-268-7809Fax: (905) 632-8116
14503 Wallick RoadAtchison, Kansas 66002(913) 255-31121-800-837-1024Fax: (913) 255-3124
9200 Energy LaneNorthport, Alabama 35476-3442(205) 339-07111-800-435-6563Fax: (205) 339-4840