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Many companies offer to 'hide' cellphone towers in, or as, trees, church towers, flag poles, water tanks and other features. [14] There are many providers that offer these services as part of the normal tower installation and maintenance service. These are generally called "stealth towers" or "stealth installations", or simply concealed cell sites.
This type consists of a rod with wide screw blades on the end and an eyelet on the other for the guy wire. It is screwed deep into the ground, at the same angle as the guy, by a truck-mounted drill machine. These are commonly used as guy anchors for utility poles since they are quick to install with a truck mounted hydraulic powered auger drive.
The horizontal and vertical poles were each made of one-inch aluminum tubes in two telescoping parts, anodized with a gold color. Due to the limits of the astronauts' spacesuits, the total height of the flagpole was limited to their 28-inch (71 cm) minimum and 66-inch (170 cm) maximum reach. The flag cost $5.50 and the tubing cost $75. [2]
In the United States, ANSI/NAAMM guide specification FP-1001-97 covers the engineering design of metal flagpoles to ensure safety. Flagpole of modest size, with simple truck ( United Kingdom ) Large flagpole, showing structured truck ( New Zealand )
Telescopic cylinders must only be used in machinery as a device for providing force and travel. Side forces and moment loads must be minimized. Telescopic cylinders should not be used to stabilize a structural component. [4] Hydraulic telescopic cylinders are often limited to a maximum hydraulic pressure of 2000-3000 psi.
The flagpole consists of 12-metre sections of steel tube fitted together by crane. [5]The design phase for the flagpole began in July 2009. Fabrication of the pole's sections was completed in Dubai in October 2010.