Civil Engineering

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The Earthquake-Proof Building That Is Built to Collapse

The Brilliant Idea: A replaceable, building-wide system to help hospitals, apartment buildings and office towers survive severe seismic shaking.

Innovators: Gregory Deierlein, Stanford University; Jerome F. Hajjar, Northeastern University

           "Elastic high-strength steel cables run down the center of the system’s frame. The cables control the rocking of the building and, when the earthquake is over, pull it back into proper alignment."
            "A steel frame situated around a building’s core or along exterior walls offers structural support. The frame’s columns, however, are free to rock up and down within steel shoes secured at the base."



            "Steel fuses (in blue) at the frame’s center twist and contort to absorb seismic energy. Like electrical fuses, when they “blow out” they can be replaced, restoring the structural system to pre-earthquake conditions."
            For decades, the goal of seismic engineers has seemed straightforward: Prevent building collapse. And so they add steel braces to a skyscraper’s skeleton or beefier rebar to concrete shear walls. After absorbing the brunt of seismic shaking, however, the compromised structures often must be demolished. “The building, in a sense, sacrifices itself to save the occupants,” says Gregory Deierlein, a Stanford University civil and environmental engineer. A team Deierlein led with Jerry Hajjar, a Northeastern University engineer, hopes to change that, designing a system that protects both people and the structures they live and work in.
             Last fall, the engineers successfully tested a 26-foot-tall, three-story, steel-frame building outfitted with the new system, built atop the E-Defense shake table—the world’s largest earthquake simulator—in Miki City, Japan. Steel “fuses,” not structural elements, absorbed the shock of an earthquake greater than magnitude 7, and cables pulled the building back into plumb once the shaking stopped. After an earthquake of that scale, the deformed fuses could be replaced in about four days—while the building remained occupied. Jim Malley of the San Francisco firm Degenkolb Engineers calls the system the next step in the evolution of green building. “As structural engineers,” he says, “our sustainable design is the ability not to have to tear buildings down after earthquakes, but to use them for hundreds of years.”


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Daily Activity

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My Daily Activity

           My name’s Danny Cahyo Kurniawan from class 2D i’m a student at Muhammadiyah Surakarta University majoring in Civil Engineering. I will tell you about my daily routines from the time i wake up in the morning until i fall a sleep at the night.
           As a muslim,i always wake up early in the morning at 04.00 a.m. I pray Subuh and clean my bedroom. I take a bath at 05.30. I have breakfast at 6 o'clock. I always drink a coffee and sometimes watch any video on Youtube.  I go to campus at 06.40 a.m. I usually go to campus by motorcycle. I always go to the university about 30 minutes before my class is started. When i arrive at my campus i always park my motorcycle at the back of my campus.
            My class lesson starts at 07.30 . during at campus, I meet my friends and college teacher. I'm studying in campus.  It’s a lunch time and i decide buy lunch with my friends.After eat our lunch, it’s time for solat/pray dzuhur at the mosque near my campus. After my class is over, I come back home again at 16.00 but sometimes at 17.00, and then i immediately pray Ashar after that I take a bath.
           at 18.10 I pray maghrib and then listening to music or wathcing tv while take a rest in my bedroom until Isya. at 19.15 I pray Isya. After that My Activity's prepared textbook for tomorrow and then I prepared to dinner with my family. 20.00 I'm reading book in my bedroom or streaming some video on Youtube. after that at 22.00  I go to bed.


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Wassalamualaikum wr.wb

Complaint Letter

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Write a complaint letter

Always try to resolve a problem with a business before seeking help from a consumer protection agency. You can do this by speaking directly with the salesperson or manager or if this fails, by writing a complaint letter.

Mr.Danny Cahyo Kurniawan

H.Agus Salim Street

Surakarta

dannykzsr@gmail.com

083123456789

November 14,2018

Ms.Anastasya Putri

Manager

Camerapedia Store

J.Sudirman Street

Surakarta

Dear Ms.Anastasya Putri;

I recently purchased a Camera DSLR Canon EOS 650d from your store in Camerapedia Store on November 12,2018. However, I noticed that the product is not at its best quality. Right off the bat, I noticed a damage/defect on the product that I’m pretty sure should not be there.

I am therefore returning the product to the branch along with a copy of the receipt, as instructed on your return policy. With this, I also request the company to make a replacement or a refund for the product. Please contact me during office hours to settle this matter. My phone number is 083123456789. You may also opt to email me at dannykzsr@gmail.com.

I look forward to your reply and resolution to this problem. I will wait for your response for 2 weeks before seeking assistance from a third party. I hope that this problem will be settled properly without going to such extremes, and prevent this problem from escalating greatly.

I hope to hear from regarding this matter.

Sincerely,

Mr.Danny Cahyo Kurniawan

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Wassalamualaikum wr.wb

Procedure Text

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             Procedure text is also known as instruction text. It is instructing how to completely make something. Since it is designed for instruction, a procedure text is dominantly composed in imperative text.
              Why do we call a text as a procedure text? Mostly the differentiating of the English text types is determined how the generic structure build the text. A procedure text is structured in GOAL, MATERIAL, an followed by STEPS. The "material" in certain topic of a procedure text is omitted. Let’s see the following example of a procedure text!

How To Use Camera

You need :

• A digital camera (DSLR camera or pocket camera or the others camera that you have)
• The object (find something that interesting to you like animals, buildings or the others)

Steps :

• Handle the camera and turn on it
• Center the object in the lcd and manage the zoom control untill you get the best view
• When you are ready to take the picture, hold the shutter speed, and various other calculations.
• Then, a light should appear that let you know the camera is set to go.
• After that, press shutter all the way down.

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