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Civiljungle Latest Articles

What Happen to the Tacoma Narrows Bridge?

What Happen to the Tacoma Narrows Bridge?

Farquharson continued wind tunnel tests. He concluded that the “cumulative effected of undampened rhythmic forces” had produced “intense resonant oscillation.” in other words, the bridge’s lightness, combined with an accumulation of wind pressure on the 8-foot solid plate girder and ...

Why Was the Great Wall of China Built?

Why Was the Great Wall of China Built?

The great wall of china was built over centuries by china’s emperors to protect their territory. Today, it stretches for thousands of miles along china’s historic northern border. Why Was the Great Wall of China Built? The Great Wall of ...

Why Does Leaning Tower of Pisa Lean?

Why Does Leaning Tower of Pisa Lean?

By the time builders had finished the third of eight planned stories about five years later, the tower’s foundation had begun to settle unevenly on the ground beneath it, a dense mixture of clay, sand and shells. As a result, ...

Why Does Paint Bubble on Exterior?

Why Does Paint Bubble on Exterior?

Moisture/air beneath the paint film is now trapped. When the painted surface is heated by the sun, the moisture/air expands and blisters form because it cannot escape freely. Blistering is often quite severe on exterior weatherboards facing north or west ...

Why Do You Water Concrete?

Why Do You Water Concrete?

Moist curing is a common method of concrete curing. It involves wetting the concrete slab often with water (5-7 times per day) for the first 7 days. This method ensures your concrete slab will be solid and durable, because it ...

Why Is the Pisa Tower Leaning?

Why Is the Pisa Tower Leaning?

By the time builders had finished the third of eight planned stories about five years later, the tower’s foundation had settled unevenly on the ground beneath it, a dense mixture of clay, sand and shells. As a result, the structure ...

Why Get Leed Certification?

Why Get Leed Certification?

Leed certification helps the environment by saving energy, water, coal and diverting waste. Leed-certified buildings also help reduce pollution and outdoor air quality by reducing smog in major industrialized communities. If your building is leed certified, you will also have ...

Why Does Concrete Get Hot?

Why Does Concrete Get Hot?

The heat produced by concrete during curing is called heat of hydration. This exothermic reaction occurs when water and cement react. The amount of heat produced during the reaction is largely related to the composition and fineness of the cement. ...