Power Poles Brochure - Technical Info

8/3/2019 Power Poles Brochure - Technical Info

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DuraspunPower Poles

CONCRETE POLES


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Outstanding durability

High-strength, low-permeability concrete produces a

highly durable product, even in harsh conditions such

as acid-sulphate soils and marine environments.

Minimum service life of 50 years is typical.

Impervious to termite infestation and rot.

Project cost savings can be relied on through

extended asset life.

Duraspun Concrete Power Poles

Unique product

The unique Rocla manufacturing process creates hollow,

steel-reinforced concrete poles of great strength and

relatively light weight, by spinning the mould at high speed.

The Duraspun process removes a significant proportion of

water in the concrete mix, which results in a high-density

concrete pole with inherently low permeability. The concrete

is also steam-cured for high early strength, enabling delivery

shortly after manufacture

Advanced Australian technology

A patented process allows the production of high strength

poles with tapered sides and embedded reinforcement cages.

The manufacturing process also allows poles to be pre-

stressed for ultimate design strength and stiffness.

Rocla has been manufacturing spun concrete poles since 1957

and is Australia's largest supplier of this unique product.

Manufacturing techniques were developed in Australia and all

the equipment designed and produced here by Rocla.

Superior performanceEconomical Rocla Duraspun power poles are designed and

manufactured to provide a long, trouble-free life. Many years

of testing and in-service performance provide a predictable

and secure support structure for overhead powerlines.

Low maintenance

Rocla Duraspun power poles are competitively priced

compared with other pole alternatives. The inherently

durable spun concrete poles require no external protective

wrappings or covers.

There is no need for internal inspections or for the use of

expensive and toxic chemicals to control termites or rot,

resulting in minimal or no maintenance expenditure.

In marine environments or in areas of high salinity, the

service life of Rocla Duraspun poles can be

significantly extended by the addition of corrosion

inhibitor in the concrete mix, which protects the steel

reinforcement against chlorides. Stainless steel butt

plates, epoxy coatings and other physical measures are

also available.


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Efficient installationCheap, fast and efficient installation by the direct embedment method in

an augured hole. No need for expensive mass concrete footings in most

soil conditions.

For installation in rock or hard soils, poles can be either bolted directly to

exposed bedrock, mounted on a pad footing, or installed using a collared

style technique. See below for details.

Longer poles can be manufactured in sections and bolted together on

site, reducing the mass and length of individual components.

In low strength or unstable soils, poles can be mounted on a driven Rocla

Duraspun concrete pile, permitting installation in ground conditions that

may otherwise require a very large, expensive slab footing or pile cap.

Full technical support on installation and embedment is available.

Wide range of integrated fittings

Rocla can fabricate poles with any combination and arrangement oftubes, ferrules, spigots and many other fittings to suit any pole-top

construction. Fittings can easily be specified using dedicated software

supplied by Rocla.

Wide availabilityRocla supplies the most extensive range of concrete poles in Australia.

Production flexibility allows Rocla Duraspun concrete poles to be

purpose-built for the actual conditions demanded by the design.

Delivery can be made at short notice, reducing the need for customer

stockholding.

Quality assurance and testingRocla manufactures concrete poles in strategically located factories

operating under a certified quality management system that conforms to

the requirements of the ISO9001 Quality Assurance Standard.

Routine sample testing provides important feedback to in-house structural

engineers, enabling constant improvement of design efficiency.

Rocla Duraspun power poles are designed in general accordance with

current Australian Standards and codes, including.

AS1170.2-2002 Structural design actions Wind actionsAS/NZ4676-2000 Structural design requirements for utility services poles

AS4065-2000 Concrete utility services poles

Unmatched resourcesThe ongoing development of Rocla Duraspun poles is supported by well-

established internal technical resources. Product design is carried out

by Roclas own engineering staff and designs are proven by rigid testing.

This unmatched resource of engineering expertise is complemented by a

comprehensive quality assurance program to produce durable, high

quality concrete poles.Rocla Duraspun concrete poles stand alone in their durability, design

flexibility and low maintenance. If you would like to realise the benefits

of spun concrete technology, call Rocla now.

Direct embedment Collared footing

In situ pad/pier footing

Backfill

ConcreteInfill

ReinforcedConcreteCollar

BlindingLayer

Backfill

GroundLevel

PoleMounted toDriven Pole

BoltedConnections

Driven Pile

Joint Lug

GroutBedding

ConcreteSlab

Foundation

FoundationStud

Driven pile footing


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Length Tip Design Tip Base NumberStrength Mass Diameter Diameter of

(m) (kN) (kg) (mm) (mm) Sections

8.0 10 - 24 820 - 1170 225 270 345 - 390 1

9.5 10 - 24 1020 - 1440 225 270 368 - 413 1

11.0 10 - 24 1240 - 1740 225 270 390 - 435 1

12.5 10 - 40 1480 - 2850 225 330 413 - 518 1

14.0 16 - 40 1970 - 3320 240 330 450 - 540 1

15.5 16 - 40 2270 - 3810 240 360 473 - 593 1

17.0 24 - 80 3220 - 6400 270 495 525 - 750 1

18.5 24 - 80 3630 - 7140 270 495 548 - 773 1

20.0 24 - 80 4070 - 7930 270 495 570 - 795 1

21.4 24 - 80 4520 - 8740 270 495 591 - 816 1

23.0 24 - 80 5000 - 9520 270 495 615 - 840 1

24.0 24 - 80 5330 - 10,140 270 495 630 - 855 1

Rocla Duraspun Power Pole Range Deflection vsLoad Comparison

Duraspun Conventionally Reinforced Poles

Length Tip Design Tip Base NumberStrength Mass Diameter Diameter of

(m) (kN) (kg) (mm) (mm) Sections

15.5 16 - 40 2270 - 3810 240 - 360 473 - 593 1

17.0 16 - 80 3080 - 6470 270 - 495 525 - 750 1

18.0 16 - 60 3500 - 5830 270 - 450 540 - 720 1

18.5 16 - 80 3585 - 7300 270 - 495 548 - 773 1

19.0 16 - 60 3800 - 6270 270 - 450 555 - 735 1

20.0 16 - 80 4020 - 8090 270 - 495 570 - 795 1

21.0 16 - 60 4370 - 7330 270 - 450 585 - 765 1

21.4 16 - 80 4460 - 8800 270 - 495 591 - 816 1

22.0 16 - 80 4690 - 9316 270 - 495 600 - 825 1

23.0 16 - 80 4960 - 9740 270 - 495 615 - 840 1

24.0 16 - 80 5290 - 10,310 270 - 495 630 - 855 1

26.0 24 80 6960 - 13,470 270 - 540 660 - 930 2

28.0 24 - 80 8210 - 13,340 270 - 495 690 - 915 2

30.0 32 - 80 9780 - 14,300 315 - 495 765 - 945 2

32.0 32 - 80 10,830 - 16,640 315 - 495 795 - 975 234.0 32 - 80 11,500 - 17,680 315 - 495 825 - 1005 2/3

36.0 40 - 80 13,380 - 21,350 360 - 495 900 - 1035 2/3

38.0 40 - 80 14,130 - 22,540 360 - 540 930 - 1110 2/3

Duraspun Pre-stressed Poles

16.0%

14.0%

12.0%

10.0%

8.0%

6.0%

4.0%

2.0%

0.0%

0 10 20 30

% of Ultimate Load

ReinforcedConcrete

Tip

Deflection

40 50 60 70 80 90 100

Pre-stressedConcrete


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Economical, durable support for powertransmission and distribution lines

Rocla Duraspun concrete poles are employed by

most Australian electricity authorities for power

transmission and distribution. They are ideal for

the construction of new power lines and as

replacement poles in existing lines.

Poles can be purpose-designed to meet specific

requirements. A wide range of pole lengths and

strength designations are available - from 8.0m to

50.0m and 5kN up to 300kN ultimate tip load.

Duraspun power poles are available in twodesign ranges:

Conventionally Reinforced Concrete

Provides a cost-efficient product, typically

suited to shorter length and lower strength

poles where deflection is not a primary

consideration.

Prestressed Concrete

A more specialized pole designed to limit

deflection and maximize performance and

durability in longer length poles and where

high and sustained loads apply. Typically

suited to high voltage transmission poles.

All power poles are available in a wide range

of lengths and tip strengths to suit most

design and construction requirements. Poles

over 24 metres in length are manufactured in

sections and joined on site using the patented

Rocla structural lug jointing system (see

Rocla Poles & Piles Handling & Installation

Guide).

DuraspunPower Poles


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DuraspunPower Poles

For further information on Rocla Duraspun power

distribution and transmission poles, lighting poles,

CCTV poles, communications poles, or bridge and

marina piles, contact your nearest Rocla Concrete

Poles branch.

E-mail your inquiry

[email protected] visit our website

www.rocla.com.au

Rocla Pty Limited

ABN 31 000 032 191

A member of the Fletcher Building Group

Trade mark of Rocla Pty Limited

Rocla Pty Limited February 2007

The contents of this brochure are copyright and may not be reproduced witout the

prior written consent of Rocla Limited. The information in this brochure is as far as

possible accurate at the date of publication, however, before application in anysituation, Rocla recommends that you obtain qualified expert advice confirming the

suitability of product(s) and information in question for the application proposed.

While Rocla accepts its legal obligations, be aware however that to the extent

permitted by law, Rocla disclaims all liability (including liability for negligence) for all

loss and damage resulting from the use of the information provided in this brochure.

Melbourne

35-39 Eighth Avenue,

Springvale Vic 3171

Phone (03) 9549 4540

Fax (03) 9574 1483

Wodonga

29 McGeochs Road,Bandiana Vic 3690

Phone (02) 6024 7566

Fax (02) 6056 1414

Sydney

72 Orchardleigh Street,

Guildford NSW 2161

Phone (02) 9721 5221

Fax (02) 9892 2820

Rockhampton

Monier Road,Parkhurst Qld 4702

Phone (07) 4936 1233

Fax (07) 4936 1708

5044

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Power Poles Brochure - Technical Info