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.
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
Century City Square, Cape Town
Hout Bay Harbour, Cape Town
Amphitheatre, Durban
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