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The poles comprised three galvanised pipes of oval cross-section and different diameters so that each pipe would slide inside the next. These telescopic poles were ideal for handling and storing and their smaller size compared with other poles made them much easier to transport and erect on site.
A utility pole, commonly referred to as a transmission pole, telephone pole, telecommunication pole, power pole, hydro pole, telegraph pole, or telegraph post, is a column or post used to support overhead power lines and various other public utilities, such as electrical cable, fiber optic cable, and related equipment such as transformers and ...
The missing reference (17) in this article is in "Impact simulation of a frangible approach light structure by an aircraft wing section". [7] With the evolution of numerical methods suitable for impact analysis, a Chapter 6 was added to the Aerodrome Design Manual part 6, dedicated to "numerical simulation methods for evaluating frangibility".
Galvanized surface with visible spangle Galvanization ( also spelled galvanisation ) [ 1 ] is the process of applying a protective zinc coating to steel or iron , to prevent rusting . The most common method is hot-dip galvanizing , in which the parts are coated by submerging them in a bath of hot, molten zinc.
Conventional 2-wire or 3-wire distribution lines have a higher power transfer capacity, but can require 7 poles per kilometre (12 poles per mile), with spans of 100 to 150 metres (110 to 160 yards). SWER's high line voltage and low current also permits the use of low-cost galvanized steel wire (historically, No. 8 fence wire). [ 9 ]
The Oppenheimer pole could be erected to 3 meters in height, and was available in a light weight narrow version, or a broader one. The Oppenheimer poles were designed using three oval shaped galvanised pipes of different diameter and each pipe would slide inside the next.
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