BEKA Schréder - BEKAPOLE Brochure

BEKAPOLE Glass fibre reinforced polyester (GRP) pole range

BEKAPOLE Success Story

In the late Seventies, BEKA Schréder was approached by the authorities in Namibia to find a solution to the corrosion which was damaging the then conventional materials used for lighting poles, such as steel, wood and concrete. Namibia is not only one of the world’s most atmospherically corrosive environments, but it also has large tracts of land with highly corrosive soils. The resulting research into non-corrosive materials has culminated in the choice of the glassfibre reinforced polyester (GRP) pole. This material exceeded the expectations of the authorities, as it not only offered the answer to the excessive corrosion, but also offered convincing strength properties combined with an appealing finish and design. BEKA Schréder subsequently bought the expertise and machinery for the manufacture of filament wound GRP poles from a leading German manufacturer and, since commencement of production in July 1978, has manufactured several hundreds of thousands of GRP poles for the African subcontinent and beyond. BEKA Schréder has perfected the process by adopting the latest technology. In 1989 BEKA Schréder became the first manufacturer to be awarded the ISO 9002 accreditation for its quality management of its pole and luminaire manufacturing plant. BEKA Schréder’s production is constantly subjected to the stringent quality demands which this accreditation implies. Through its commitment to consistent quality, BEKA Schréder has become one of the world’s leading manufacturers of GRP poles. BEKA Schréder’s GRP poles are used for highways, main roads, residential streets, sportsfields, decorative lighting, area lighting, post-top lighting, perimeter security, parks and gardens, as well as for flag poles. The BEKAPOLE, as it became known, is used not only for its resistance to corrosion, but is preferred by architects, developers and local authorities for its aesthetic appearance, strength, ease of installation and inherent safety for road users.

2 BEKAPOLE

Applications

The BEKAPOLE has virtually unlimited applications. It can be manufactured to any requirement relating to the number and configuration of luminaires to be mounted, inclusive of any special colour.

Main roads

Urban roads

Perimeter security

Sports facilities

Parking area lighting

Flag poles

Various decorative lighting applications

3

Key Advantages

Light Weight The low mass saves handling, transport and erection costs during installation: • Low handling costs: No extra equipment needed to load or offload the poles • Low transport costs: Save on transport costs due to the poles' low weight and the higher stacking height on road freight • Low installation costs: No extra equipment is needed to erect the poles

Vandal Resistant High impact strength of polyester gel coat and glass filament wound structure and material offering no scrap value, therefore very low risk of theft.

Non-Corrosive No above- or below-ground corrosion in salt climates or acid soil.

Corrosion of steel pole

Maintenance-Free No corrosion or decay ensures that the surface coat of the pole will not require maintenance.

4 BEKAPOLE

Longevity Over time, BEKA Schréder fibreglass poles will outlast wood, concrete, steel and aluminium under similar climatic conditions.

Versatility A wide range of spigots, floodlight mountings, baseplates and decorative arrangements ensure a product for almost every application.

Non-Conductive Perfect electrical insulation prevents accidental electrocution by faulty wiring.

Low Inertia A reduction in personal injury and damage to vehicles in road accidents.

High Bending Strength Engineered to withstand a wind pressure of 500 Pa inclusive of 0.20m 2 luminaire area with less than a 5% deflection of the mounting height. This relates to a wind speed of 103.9km/h. Any higher wind speeds must be calculated separately.

Sustainable The manufacturing process for glass fibre poles is much kinder to the environment than metal or concrete products.

5

Myths

“Glass fibre poles whip around in the wind...” Due to the unique process of glass filament winding, standard BEKA Schréder GRP poles are designed to withstand a wind pressure of 500 Pa on a projected luminaire area of 0.20m 2 . Some of our most satisfied customers are situated in coastal environments subjected to high winds. All BEKA Schréder GRP poles are designed and manufactured with a safety factor of 2,5.

“Glass fibre poles are deteriorated by sunlight...” The ultraviolet rays in sunlight will deteriorate only unprotected glass fibre. This has been eliminated by pigmenting the resin and the application of a polyester gel coat with UV inhibitors to the surface of the pole structure.

“Glass fibre poles cannot support big headloads...” Each BEKA Schréder glass fibre pole is individually engineered by factoring in the weight, projected area and windloading requirements of the installation site. The most demanding installation is easily achieved by a pre- engineered BEKA Schréder glass fibre pole.

“Glass fibre poles are made out of plastic...” BEKA Schréder glass fibre poles are manufactured by the filament winding process where continuous glass rovings are fed through a polyester resin bath and wound at an even tension onto a rotating mandrel, resulting in a mass glass to resin ratio of 70:30, making full use of the tensile strength of the glass filament which is more than that of steel.

Hinged glass fibre pole

Winched glass fibre pole

Heavy duty access door cover

Glass filament windings

6 BEKAPOLE

Manufacturing

A mechanised manufacturing process utilises a fully automated track mounted roving machine as both the glass filament windings and resin are applied. This sophisticated high quality manufacturing method optimises the usage of materials, thus considering costs, resources and our environment. The filament winding machine is operated at calculated speeds whilst moving alongside the rotating mandrels to achieve maximum winding angles. BEKA Schréder GRP poles are manufactured through the filament winding process whereby continuous glass rovings are fed through a polyester resin bath and wound at an even tension onto a rotating mandrel, resulting in a mass to resin ratio of 70:30 and making full use of the tensile strength of the glass filament which is more than that of steel. After the winding process has been completed, the glass filament structure is cured and then removed from the mandrel for surface preparation. A base coat of polyester resin that complies with the requirements of SANS 1749 is applied, thereafter the cured structure is further machined to receive a final gel coat that is applied to a uniform thickness of between 250 and 500 microns. In the mechanical assembly process, the pole is machined to provide holes for baseplate hookbolts, cable entries, access door openings, as well as any other details required. Spigot arrangements and surface baseplates, where required, are moulded into the pole and secured in position with locking screws. Throughout the manufacturing process, the pole is subjected to stringent quality checks and tests.

Automated track mounted winding machine

Accurate, consistent computer-controlled winding process

Winding of glass filament

Drilling machine

7

Design & Construction Details

Material The pole is constructed by the filament winding process to achieve optimum results for strength and rigidity. The filament winding process is continuously applied with uniform tension onto a rotating mandrel, resulting in a minimum mass glass to resin ratio of 70:30. The surface is seamless, smooth and tapered. Finishing coat The material of the finishing coat is a gel coat that complies to SANS 1749 and is applied to a uniform thickness of between 250 and 500 microns, providing a weatherproof, UV-resistant, flame-resistant and impact- strong surface in the colour specified. Mechanical properties A standard pole supporting a luminaire with a wind surface of 0.20m 2 may not have a pole top deflection of more than 5% of its height above ground when subjected to a basic wind pressure of 500 Pa. A safety factor of 2.5 times the total maximum windload is applicable. Material system The pole is manufactured in accordance with SANS 1749 under the ISO 9002 quality system.

Access opening If an access opening is required, the cut-out is covered by an access door cover manufactured from glass filled nylon impregnated in the same colour as that of the surface coat. It is secured to the pole by two stainless steel Allen head captive screws into M4 brass inserts embedded in the pole. Cable entry A cable entry with a minimum diameter of 34mm is provided at a minimum depth of 400mm below the ground surface. Glandplate A hot dipped galvanised glandplate, suitable for gland no. 0 or 1, complete with terminal block and DIN rail for a miniature circuitbreaker, is provided and is mounted to a bolt provided in the access opening. Baseplate Poles for direct embedment in the ground can be provided with a square hot dipped galvanised baseplate complete with 2 x hot dipped galvanised steel hookbolts and nuts. Base-mounted poles have a hot dipped galvanised flange plate that can be bolted to a foundation which is designed to withstand the forces the pole will experience in service.

Century City Square, Cape Town

Hout Bay Harbour, Cape Town

8 BEKAPOLE

Relevant Pole Data and Other Factors

Corresponding Calculated Key Values

Load to be applied in pole-top deflection test (N)

Maximum permitted deflection in pole-top deflection test (mm)

Diameter of pole at ground level (mm)

Mounting height (m)

Total length of pole (m)

2.0

2.6

110

135.4

100

2.5

3.1

120

143.4

125

3.0

3.6

128

152.0

150

3.5

4.1

135

161.0

175

4.0

4.6

146

171.6

200

4.5

5.2

155

182.3

225

5.0

5.7

164

193.6

250

5.5

6.3

173

205.4

275

6.0

6.9

170

213.7

300

6.5

7.4

178

225.9

325

7.0

8.0

186

238.6

350

7.5

8.6

194

251.8

375

8.0

9.2

202

265.5

400

8.5

9.8

210

279.7

425

9.0

10.4

218

294.3

450

9.5

11.0

226

309.4

475

10.0

11.6

237

326.8

500

11.5

13.4

290

463.4

575

12.0 600 1. Relevant pole data is based on a shape factor of 0.7 and a calculated wind pressure of 500.14 Pa (relating to a wind speed of 103.9km/h). 2. Corresponding calculated key values are based on a luminaire surface area of 0.2m 2 with a shape factor of 1. NOTES: 14.0 300 504.0

WITS University, Johannesburg

Amphitheatre, Durban

Wine distribution centre, Cape Town

9

Dimensions

ø76

MH m

HT m

E m

U m

D mm

C mm

Description

K 18 76 20

2.0 2.6 0.6 0.5

121

400

K 18 76 25

2.5

3.1

0.6 0.5

131

400

K 18 76 30

3.0 3.6 0.6 0.5 135 400

K 18 76 35

3.5

4.1

0.6 0.5 146 400

K 18 76 40

4.0 4.6

0.6 0.5 157 400

K 18 76 45

4.5

5.2

0.7

0.5 168 400

K 18 76 50

5.0 5.7

0.7

1.0 177 400

K 18 76 55

5.5

6.3

0.8 1.0 180 400

K 18 76 60

6.0 6.9 0.9 1.0 184 400

K 18 76 65

6.5

7.4 0.9 1.0 192 400

K 18 76 70

7.0 8.0 1.0 1.0 202 400

K 18 76 75

7.5

8.6

1.1

1.0 210 400

K 18 76 80

8.0 9.2

1.2

1.0 220 500

K 18 76 85

8.5

9.8 1.3

1.0 230 600

K 18 76 90

9.0 10.4 1.4

1.0 230 600

K 18 76 95

9.5 11.0 1.5

1.0 240 700

HT Total length MH Mounting height D Base diameter

K 18 76 100

10.0 11.6 1.6

1.0 250 800

K 18 76 110

11.0 12.8 1.8

1.0 310 800

K 18 76 115

11.5 13.4 1.9

1.0 320 800

C Depth of cable entry U Access door height E Buried depth

K 18 76 120

12.0 14.0 2.0 1.0 340 1 000

D

NOTE: All measurements are approximate

Colour Chart (For indication purposes only)

Pigment Paste Colour

Comparative RAL Colour

K100 White K200 Black

RAL 9016 RAL 9017 RAL 5012 RAL 5017 RAL 3020 RAL 6005 RAL 6001 RAL 1018 RAL 1001 RAL 1028 RAL 8025 RAL 8017 RAL 7045 RAL 7016 RAL 7047 RAL 9022

K302 Paris Blue

K340 Strong Blue

K100 White

K200 Black

K302 Paris Blue K340 Strong Blue K400 Signal Red

K530 Mid Bruns Green

K400 Signal Red

K530 Mid Bruns Green

K541 Brilliant Green

K600 Canary (Light) Yellow

K541 Brilliant Green

K600 Canary (Light) Yellow

K640 Sandstone K641 Traffic Yellow K705 Dark Earth

K705 Dark Earth

K713 Chocolate Brown

K640 Sandstone

K641 Traffic Yellow

K713 Chocolate Brown K913 Mineral Grey K916 Charcoal K918 Birch Grey K919 Pearl Light Grey

K916 Charcoal

K913 Mineral Grey

K918 Birch Grey

K919 Pearl Light Grey

10 BEKAPOLE

Spigot Options

Spigot Mounting

PDP-015-001

PDP-015-002

PDP-015-003

PDP-017-001

PDP-017-003

PDP-017-005

PDP-017-007

Floodlight Mounting

PDP-021-003

PDP-021-004

11

Bracket Options

Decorative Lantern Arrangements

PDP-025-001 - Type A

PDP-025-001 - Type B

PDP-025-001 - Type C PDP-025-001 - Type D (Single)

PDP-025-001 - Type D (Double)

PDP-025-002

Decorative Bracket Options

KORDA-ZA

CURV-T

ITO-ZA (750mm)

ITO-ZA (1250mm)

CURV-N (500mm)

CURV-N (1250mm)

CURV-B (500mm)

CURV-B (1250mm)

Our decorative brackets support a weight of up to 13kg.

12 BEKAPOLE

Options, Accessories & Spare Parts

Drawing No. For details, refer to Technical Drawings brochure

Type

Article Description

Remark

Heavy duty pole version with spigot, 76*80-100mm, moulded into straight pole

SPECIAL POLE

A

N/A

PDP-015-001 PDP-015-002 PDP-015-003

BEKAPOLE Ø60/76mm spigot insert (refer to drawing for options)

B

Moulded into straight pole, hot dipped galvanised or stainless steel (Grade 304)

Single side entry spigot, 1*Ø42mm

B, C

PDP-017-001

Double side entry spigot, 2*Ø42mm

A, B, C

PDP-017-003

Triple side entry spigot, 3*Ø42mm

A, B, C

PDP-017-005

Quadruple side entry spigot, 4*Ø42mm

A, B, C

PDP-017-007

Floodlight mounting for single floodlight - Type of floodlight to be specified Floodlight mounting for double floodlights - Type of floodlights to be specified Floodlight mounting for single floodlight - Type of floodlight to be specified Floodlight mounting for double floodlights - Type of floodlights to be specified

A, B

PDP-021-003

Hot dipped galvanised

A, B, C

PDP-021-004

A, B

PDP-021-003

Stainless steel (Grade 304)

A, B, C

PDP-021-004

2 Arm version - Type A

A, E

3 Arm version - Type A

A, E

PDP-025-001

4 Arm version - Type A

A, E

2 Arm version - Type B

A, E

3 Arm version - Type B

A, E

PDP-025-001

4 Arm version - Type B

A, E

2 Arm version - Type C

A, E

Hot dipped galvanised, painted in the colour to be specified

3 Arm version - Type C

A, E

PDP-025-001

4 Arm version - Type C

A, E

4 + 1 Arm version - Type C

A, E

2 Arm version - Type D

A, E

3 Arm version - Type D

A, E

PDP-025-001

4 Arm version - Type D

A, E

4 + 1 Arm version - Type D

A, E

2 Arm version - Type E

A, E

PDP-025-002

KORDA-ZA

A, E

CAD-0052165

CURV-T

A, E

CAD-0056820

ITO-ZA (750mm)

A, E

CAD-0056280

Hot dipped galvanised, painted in the colour to be specified

ITO-ZA (1250mm)

A, E

CAD-0056281

CURV-N (500mm)

A, E

CAD-0060978

CURV-N (1250mm)

A, E

CAD-0056823

CURV-B (500mm)

A, E

CAD-0060946

CURV-B (1250mm)

A, E

CAD-0056713

13

Drawing No. For details, refer to Technical Drawings brochure

Type

Article Description

Remark

Glandplate assembly, Type GP/2/0/E/TB/MCB, consisting of 2 holes 20mm diameter, suitable for Gland No 0 or 1, complete with terminal block, 4 way, 30 Amp and DIN rail for MCB Miniature circuitbreaker, 5A/5kA, for total line starting currents of less than 4A Miniature circuitbreaker, 10A/5kA, for total line starting currents of more than 4A, but not exceeding 8 Amp

GLANDPLATE ASSEMBLY

PDP-011-001

N/A

MINIATURE CIRCUITBREAKER

N/A

Baseplate assembly, 300*300*1.6mm Baseplate assembly, 300*300*6mm Baseplate assembly, 400*400*1.6mm Baseplate assembly, 400*400*6mm

Hot dipped galvanised, complete with hookbolts and nuts

DETACHABLE BASEPLATE

PDP-003-001

Baseplate assembly, 500*500*1.6mm, standard from 12.8m total length poles Baseplate assembly, 500*500*6mm, optional from 12.8m total length poles

F1 - for mounting height up to 5m

A

PDP-003-011 and PDP-003-012

Hot dipped galvanised

F2 - for mounting height up to 10m

A

FIXED BASEPLATE FOR SURFACE MOUNTING

F3 - for mounting height up to 12m

A

F1 - for mounting height up to 5m

A

Stainless steel (Grade 304)

F2 - for mounting height up to 10m

A

PDP-003-011

F3 - for mounting height up to 12m

A

H1 - for mounting height up to 5m

A, D

Hot dipped galvanised

HINGED BASEPLATE FOR SURFACE MOUNTING

PDP-003-022

H2 - for mounting height up to 9m

A, D

H1 - for mounting height up to 5m

A, D

Stainless steel (Grade 304)

PDP-003-022

H2 - for mounting height up to 9m

A, D

W1 - for mounting height up to 9m

A, D

WINCHED BASEPLATES FOR SURFACE MOUNTING, HOT DIPPED GALVANISED

PDP-003-030 and PDP-003-031

W2 - for mounting height up to 12m

A, D

W1 - for mounting height up to 9m

WINCH ASSEMBLY

PDP-003-080

W2 - for mounting height up to 12m

9.2m total length, 8m mounting height

FLAGPOLES, complete with rope and rope attachment

PDP-027-001

10.4m total length, 9m mounting height

8m mounting height

MUSHROOM TOP FLAGPOLES, complete with rope and rope attachment

PDP-027-002

9m mounting height

SPARE PARTS

Heavy duty access door

E

PDP-040-001

REMARK KEY : A - Special pole required

B - Wound-in C - Slip-over D - Limitations for maximum headweight of 15kg and 0.2m 2 wind surface area apply to standard pole E - Specify required colour

Special versions are available for all items

14 BEKAPOLE

Ordering Information

Example: K187660 K918SF2 SE151DST25%

Extra strength XX% 10% up to 100%

ID Mounting Height

Colour finish

Base

Spigot

Flood

Flag pole

Pole door

XX XX = MH Thus: 60 6.0m MH (Max. 12m mounting height)

K100 White (RAL9016) K200 Black (RAL9017) K302

BUR Buried SF... Surface

No description No spigot S60D2 Spigot HDG 60mmx225mm S76D2 Spigot HDG 76mmx225mm S76D4 Spigot HDG 76mmx450mm SE151

FL761 Flood mounting single HDG FL762 Flood mounting double HDG FS761 Flood mounting single S/Steel FS762 Flood mounting double S/Steel

FLAGS Standard flag pole, complete with rope FLAGM Mushroom flag pole assembly, complete with rope

DNO No pole door DST Standard pole door

mounted (F1/F2/F3) HN... Hinged suface mounted (H1/H2) WN... Winched surface mounted (W1/W2)

Paris Blue (RAL5012) K340 Strong Blue (RAL5017) K400

Signal Red (RAL3020) K530 Mid Bruns Green (RAL6005) K541 Brilliant Green (RAL6001) K600 Canary (Light) Yellow (RAL1018) K640 Sandstone (RAL1001) K641 Traffic Yellow (RAL1028) K705 Dark Earth (RAL8025) K713 Chocolate Brown (RAL8017) K913 Mineral Grey (RAL7045) K916

Spigot HDG 60/76mm x 42mm x 150mm x 1 /15° SE152 Spigot HDG 60/76mm x 42mm x 150mm x 2 /15° SE153 Spigot HDG 60/76mm x 42mm x 150mm x 3 /15° SE154 Spigot HDG 60/76mm x 42mm x 150mm x 4 /15° SE001 Spigot HDG 60/76mm x 42mm x 150mm x 1 /0° for LEDlume SE002 Spigot HDG 60/76mm x 42mm x 150mm x 2 /0° for LEDlume

For a list of buried baseplates,

boltcages and winch assemblies, see table below

S60S2 Spigot S/Steel 60mmx225mm S76S2 Spigot S/Steel 76mmx225mm S76S4 Spigot S/Steel 76mmx450mm SS151

Charcoal (RAL7016) K918

Birch Grey (RAL7047) K919 Pearl Light Grey (RAL9022)

Spigot S/Steel 60/76mm x 42mm x 150mm x 1 /15° SS152 Spigot S/Steel 60/76mm x 42mm x 150mm x 2 /15° SS153 Spigot S/Steel 60/76mm x 42mm x 150mm x 3 /15° SS154 Spigot S/Steel 60/76mm x 42mm x 150mm x 4 /15° SS001 Spigot S/Steel 60/76mm x 42mm x 150mm x 1 /0° for LEDlume SS002 Spigot S/Steel 60/76mm x 42mm x 150mm x 2 /0° for LEDlume

Buried Baseplate, Bolt Cages & Winched Assembly: Baseplate Assembly 300x300x1.6mm HDG Baseplate Assembly 400x400x1.6mm HDG Baseplate Assembly 500x500x1.6mm HDG Baseplate Assembly 300x300x6mm HDG Baseplate Assembly 400x400x6mm HDG Baseplate Assembly 500x500x6mm HDG Boltcage F1 2.0m to 5.0m MH Boltcage F2 5.5m to 9.5m MH Boltcage F3 10.0m to 12.0m MH Boltcage H1 2.0m to 5.0m MH Boltcage H2 5.5m to 9.0m MH Boltcage W1 2.0m to 9.5m MH Boltcage W2 10.0m to 12.0m MH

Winch Assembly 9m W1 Winch Assembly 12m W2

15

GRP Pole Planting Instructions

These instructions are intended to assist as a guideline for planting buried and surface-mount GRP poles for mounting height (MH) up to 12m.

1. Excavation of hole

Holes for the purpose of planting GRP poles can be excavated by hand or by making use of ground-moving equipment like a TLB. For buried poles an auger can also be used.

1.1. Surface-mount GRP poles

Surface-mount GRP poles should be mounted on a bolt-cage in a concrete foundation. GRP poles are available in either of the following options:

• • •

Fixed baseplate Hinged baseplate Winched baseplate

Below is a table indicating the requirements of the foundation for these options, as well as the limitations. Please note the different dimensions depending on the typical head weight and wind surface area.

2 * LEDLUME-MAXI’s

4 * LEDLUME-MAXI’s

Typical Head Weight and Wind Surface Area

Head weight: 13kg each Windage area: 0.045m 2 each

Head weight: 13kg each Windage area: 0.045m 2 each

Baseplate Code

MH

D (m)

L&B (m)

D (m)

L&B (m)

F1

≤5m

0.8

0.6

0.800

0.7

Fixed baseplate Drawing PDP-003-011

F2

≤10m

1.0

0.9

1.000

1.0

F3

≤14m

1.2

1.0

1.200

1.1

H1

≤5m

0.8

0.6

0.800

0.7

Hinged baseplate Drawing PDP-003-021

H2

≤9m

1.0

0.8

1.000

0.9

W1

≤9m

1.0

0.8

1.000

0.9

Winched baseplate Drawing PDP-003-031

W2

≤12m

1.1

0.9

1.100

1.0

W3

≤14m

1.2

1.0

1.200

1.1

Table 1 Excavation dimensions for surface-mount GRP poles

Design is based on: • 500 Pa was applied to the Poles with Shape Factor of 0,70 (in terms of SANS 1749)

• A minimum bearing pressure of 100kPa, which, according to SABS 0225, table 7 is the allowable safe bearing pressure for poor soil conditions, i.e. soft clay, poorly compacted sand and clays containing large amount of silt and organic matters. • The foundations have a safety factor against overturning of 2 and more. • D (m) is the Depth or Thickness, L&B (m) is the plan Length and Breadth of the Base required. • Quality of concrete: Class 20/20 mass concrete mixed by volume of 1:2:4 cement/sand/stone • Please note: These are recommendations and BEKA Schréder accepts no responsibilities for errors or omissions.

16 BEKAPOLE

D

B

L

Figure 1 Dimensions of foundation-hole for surface-mount poles

1.2. Buried GRP poles

Surface-mount poles comes in different lengths and the planting depth of the pole depends on the length and mounting height of the luminaire. Details pertaining to the excavation needed can be seen in the table below:

2 * LEDLUME-MAXI’s

Typical Head Weight and Wind Surface Area

Head weight: 13kg each Windage area: 0.045m 2 each

Pole Height (HT) (m)

MH (m)

D (m)

L&B (m)

H (m)

2.6

2.0

0.6

0.75

0.6

3.1

2.5

0.6

0.75

0.6

3.6

3.0

0.6

0.75

0.6

4.1

3.5

0.6

0.75

0.6

4.6

4.0

0.6

0.75

0.6

5.2

4.5

0.7

0.75

0.6

MH

5.7

5.0

0.7

0.75

0.6

6.3

5.5

0.8

0.75

0.6

HT

6.9

6.0

0.9

0.75

0.6

7.4

6.5

0.9

0.75

0.6

8.0

7.0

1.0

0.9

0.6

8.6

7.5

1.1

0.9

0.6

9.2

8.0

1.2

0.9

0.6

9.8

8.5

1.3

0.9

0.6

10.4

9.0

1.4

0.9

0.6

11.0

9.5

1.5

0.9

0.6

11.6

10.0

1.6

0.9

0.6

D

13.4

11.5

1.9

0.9

0.6

14.0

12.0

2.0

0.9

0.6

Figure 2 Dimensions of buried poles

Table 2 Excavation dimensions for buried GRP poles

17

D

D

B

L

H

Figure 3 Dimensions of excavated hole for buried poles

Figure 4 Dimensions of drilled hole for buried poles using an auger

2. Backfilling of buried poles The backfilling mix should have a composition of soilcrete 1:10, based on standard soil condition of 150kPa. Backfilling the pole hole should be done in layers of 250mm and compacted with a hand-rammer. The soil should be compacted evenly around the pole, and care should be taken that the pole does not lean to one side during compacting. Continue the backfill and compacting process until the hole is filled. If a stepped hole was used the same applies, and the entire hole must be filled and compacted.

Compact backfill in 250mm layers

D

L/H

Figure 5 Backfilling and compacting the hole

18 BEKAPOLE

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Copyright © BEKA Schréder (Pty) Ltd 2019 – 13 West View Road – Olifantsfontein (South Africa) • The information, descriptions and illustrations herein are of only an indicative nature. Due to advanced developments, we may be required to alter the characteristics of our products without notice. As these may present different characteristics according to the requirements of individual countries, we invite you to consult us. 2022-01

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