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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 0.20m2 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.

Quality 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.

Base Plate Poles for direct embedment in the ground can be provided with a 300x300x1.6mm hot dipped galvanised base plate 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.

Relevant pole data and other factors Corresponding calculated key values

Total length of pole

(m)

Height of pole above

ground (m)

Diameter of pole at

ground level (mm)

Load to be applied

inpole-top deflection test (N)

Maximum permitted

deflection in pole-top

deflection test (mm)

2.6 2.0 110 135.4 100

3.1 2.5 120 143.4 125

3.6 3.0 128 152.0 150

4.1 3.5 135 161.0 175

4.6 4.0 146 171.6 200

5.2 4.5 155 182.3 225

5.7 5.0 164 193.6 250

6.3 5.5 173 205.4 275

6.9 6.0 170 213.7 300

7.4 6.5 178 225.9 325

8.0 7.0 186 238.6 350

8.6 7.5 194 251.8 375

9.2 8.0 202 265.5 400

9.8 8.5 210 279.7 425

10.4 9.0 218 294.3 450

11.0 9.5 226 309.4 475

11.6 10.0 237 326.8 500

13.4 11.5 290 463.4 575

14.0 12.0 300 504.0 400

NOTES: 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 0.2m2 with a shape factor of 1.

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