The Pentagon

The PentagonAt 0.10 Percent

Task

Grade 7’s topic is distance and direction. We have been told to make a scale model of anything you would like.

What do I need to do? Make an accurate scale model of the Pentagon. Have bearings and directions to it from at least 5 other

places. Make a PowerPoint. (what I am doing now)

Planning of Task

Now, how will I do all of these things?

Make an accurate scale model, this includes: Finding the actual Size:

Go on the internet and type in, Pentagon.

Getting a scale:

What type of scale do you think should be appropriate for people at your level. The pentagon is a huge building, if the scale is 1:100, it would be as big as the classroom. Be as realistic as possible.

Planning of Task

How can I find the bearings from 5 different places?

Find out where the pentagon is and choose 5 prominent places, which are not too far away from the actual building.

Go on onto Google maps and type in “Pentagon, Virginia”. Print out this sheet and use a protractor to find bearings and directions to five different places.

Then write why you chose these places.

The Pentagon (Brief History and Information)

The pentagon is the head of the United States Department of Defense. Designed by the American architect George Bergstrom, and built by Philadelphia, Pennsylvania, general contractor John McShain, the building was started on January 15, 1943, after ground was broken for construction on September 11, 1941.

General Brehon Somervell provided the major motive power behind the project”; Colonel Leslie Groves was responsible for overseeing the project for the Army.

The Pentagon (Brief History and Information)

The pentagon was built as a base in World War 2. It was very small at first and was called the Munitions Building.

Even then, it was for the Defense of United States. Soon later, more things began to spring up, so they decided to build a huge building for the Defense, this building was the Pentagon.

September 11

A lot of people think that only the World Trade Center in New York was effected by the terrorist attacks, but it was not.

The terrorists were also planning on hijacking a plane that was to go to the capital in Washington D.C. After hijacking the plane, something went wrong, the plane flew forty minutes east then it had to, and crashed into the newly renovated side of the Pentagon. 189 people died in all, 125 from the building, and all 64 in on the Boeing 770.

September 11

It was the only area of the Pentagon with a sprinkler system, and it had been reconstructed with a web of steel columns and bars to withstand bomb blasts.

The steel reinforcement, bolted together to form a continuous structure through all of the Pentagon's five floors, kept that section of the building from collapsing for 30 minutes—enough time for hundreds of people to crawl out to safety.

September 11

The area struck by the plane also had blast-resistant windows—2 inches thick and 2,500 pounds each—that stayed intact during the crash and fire.

It had fire doors that opened automatically and newly built exits that allowed people to get out

Security

Once a relatively public building, although always containing high-security areas, it remained accessible during the war with Vietnam with the largest of a series of demonstrations in October 1967.

Not long before 9/11, the aging building was undergoing general renovation and, as a general program of increasing physical security.

Security

This included structural reinforcements and blast-resistant windows, with the renovations being done to one side of the Pentagon at a time.

When American Airlines Flight 77 hit the building, it hit the area that was just finishing the renovation, and was not fully occupied.

Since 9/11, there is immensely more security on the grounds. In addition to conventional gates, power-operated barriers can be raised from the road surface to restrain a vehicle

Design

As you can see, this is the top view of the Pentagon, which is being compared to different large structures. The Pentagon consists of 5 rings, which are named A, B, C, D and E. One side of the Pentagon is exactly 921 feet long.

Design

This is a 3d picture of the Pentagon The distance between each ring is 17.5 feet, and the distance across is around 1345 feet.

Scale Factor

Scale Factor Map scales may be expressed in words (a lexical scale), as a ratio,

or as a fraction.

Examples are:'one centimetre to one hundred metres'  

  or    1:10,000   or    1/10,000'one inch to one mile'    or    1:63,360    or    1/63,360’

one centimetre to one thousand kilometres'   or   1:100,000,000   

or    1/100,000,000.  (The ratio would usually be abbreviated to 1:100M).

Scale Factor

How do you draw a scale drawing?Drawn Length = AL/SFAL=921SF=1:1000DL=921/1000DL=0.921

Scale

This is the Scale we are using 1:1000So, the Length of one side is 921 feet, which is

284 meters, (divide 3.) in our scale, that equals to 28.4 cm.

Formula= AL/SF

Calculations

Scale: 1:1000 Distance Between Rings AL= 17.5 Feet DL= (17.5*2.5)

Bearings Story

Bearings are three digit numbers that tell the air direction from a place to the other.

E.g.034

Bibliography

http://www.globalsecurity.org/military/facility/images/pentagon_ikonos_010_01.jpg

http://resources.newhomesource.com/Images/Homes/Beaze367/large_5923406.jpg

http://en.wikipedia.org/wiki/The_Pentagon