Aluminum Flagpole
Aluminum Flagpole
Help! Coefficient of Linear Expansion?
a.an aluminum flagpole is 33m high. by how much does its length increase as the temperature increases by 15C?
b.A circular hole in aluminum plate is 2.725cm in diameter at 12C.What is its diameter when the temperature of the plate is raised to 140C?
The first thing you need to know is the coefficient of expansion for aluminium, this link will provide you with the answer to that part and much more useful information on this metal. http://mysite.du.edu/~jcalvert/phys/alumin.htm With this you can use the answer given to you earlier and confirm the coefficient is at the level required for the exercise.
When you need to find out info that you don't know just type in what you are searching for on a search engine and then explore the sites that come up. In this way you will learn the answer that you seek and how to do your own research! Hope this is of some help.
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Flag Desk Inc's Installation of 70 ft. Flagpole
Installing a Residential Flagpole
Build in a Residential Flagpole
When decide on a residential flagpole, first determine on the position and desired height. Make sure you can observe the flag from numerous angles. Is it so high that you have to crane your neck to see it? Is it so low that it is mask behind a shrubbery? Choose something in in the middle.
Next, decide on your flagpole material. The most attractive material for residential flagpoles is aluminum, for its high strength, low preservation, low weight, and low cost. Fiberglass is the second most attractive material, due to it boasts a hard glossy gel coat finish that resist most soiling and scratching.
Now make choice either an external or internal halyard system. A halyard structure is the means by which the flag is raised and lowered. It consists of a rope or cable threaded through a truck or pulley structure at the top. External halyard scheme are rigged on the outside of the pole, locked in place by wrapping the rope or cable around a simple cleat at the base of the pole. Internal halyard setup are located on the inside of the pole, with a slot at the base for a special winch or handle. In areas where vandalism is a concern, decide on an internal halyard system.
Finally, choose what color you want your pole to be, and whether you want to add custom ornaments, such as a finial or ball, eagle, or any other type of ornament.
When it comes time to position the flag itself, dig a hole. The diameter of the hole lean on on the size of the flagpole. Wet down the hole and then fill it with concrete. Place a steel groundsleeve into which the flag will be set. Be sure that 10 % of the pole length is underground, and that the pole doesn't contact the concrete, as concrete corrodes most flag materials. If you have any questions, ask advice of the fabricator before proceeding. In many cases, the fabricator can install the flag for you.
See additional information on flagpoles and flapoles kits
About the Author
Steve Valentino has been working in the medical field for some time, and is now dedicating his free time to expanding the minds of those curious with his writing. Having seen medical malpractice first hand, dealing with complicated legislation to regulate and cap awards, and its affect on families and medical practitioners, Steve considers himself a seasoned expert on the topic.