Preventa de eBooks de Naturaleza y ciencia

The Leaning Tower of Pisa is one of the most recognized structures in the world and to some, one of the most controversial. While there are many assumptions as to who conceived or designed the tower, there is no concrete evidence pointing to one person. The book chronicles the history of the eight-century old tower including why it leans, the construction of the belfry, and efforts made to stabilize the building over the years. The construction spanned three phases with great gaps in years due to wars, weather, and earthquakes. Featured in the book are archival photographs, chronology of events listing, additional reading and website recommendations, chapter notes, glossary, and index.

An intriguing exploration into the storied history of the White House. Starting with the burning of the building during the War of 1812, the book chronicles the many construction and renovation projects over the years. Includes detailed accounts of how the White House accommodations were tailored and personalized to each of the presidents including the addition of underground bunkers, meeting rooms, and tunnels, a bowling alley, swing jets, a tree house and more. Featured in the book are archival photographs, chronology of events listing, additional reading and website recommendations, chapter notes, glossary, and index.

Learn how a man in France who longed for democracy and freedom set forth on a mission to build the ultimate symbol of freedom for America. This book chronicles Edouard de Laboulayes efforts to build the massive statue, how it was built, and ultimately transported in pieces to America where it makes its home to this day in New York Harbor. Interesting facts found throughout including how many sheets of copper were used, the number of stairs to climb to the top, and how many rivets were needed to secure the copper to the internal skeleton. Featured in the book are archival photographs, chronology of events listing, additional reading and website recommendations, chapter notes, glossary, and index.

Perched along the banks of the Sydney Harbor, the Sydney Opera House is one of the most iconic and recognizable structures in the world. It began in 1956 when a year-long international design competition was held. The winning design selected was from Jorn Utzon and the process of building the multi-purpose facility commenced in 1959. Construction was done in three stages over a 14-year span and was riddled with problems and delays through. The opera house was finally opened in 1973 in grand style with Queen Elizabeth II in attendance. Now, more than 8-million people visit the Sydney Opera house annually, attending the more than 3,000 events staged yearly. Featured in the book are archival photographs, chronology of events listing, additional reading and website recommendations, chapter notes, glossary, and index.

A fascinating exploration into the construction of the iconic Empire State Building in New York City. Learn how the construction was able to be completed in just one year and how assembly line techniques used in the auto industry were implemented in the construction of the building resulting in the unprecedented build time. The building of the Empire State Building was a result of a very coordinated, organized effort. The materials were prefabricated, labeled, and arrived at the site per a specific schedule so they could be used immediately. Food services were available on each floor so workers would not need to traverse up and down on breaks. These efforts directly impacted what still stands today, as the fastest build of a skyscraper in history. Featured in the book are archival photographs, chronology of events listing, additional reading and website recommendations, chapter notes, glossary, and index.

The Golden Gate Bridge is one of the most recognizable structures in the world and an engineering marvel. Construction began in 1933 and was completed in 1937. It faced many setbacks during the process. The book chronicles the building of the iconic bridge including how bridge builder, Joseph Strauss, found solutions for addressing the harsh environmental conditions to ensure the safety of travelers and shipping vessels. Factors such as water depth, height, span, bedrock stability, high winds, and the risk of earthquakes all had to be carefully considered. Also includes detailed and extraordinary efforts to ensure workers safety. Such precautions included netting to catch workers who fell while working and breathing equipment to protect workers from the harmful paint toxins were implemented. Featured in the book are archival photographs, chronology of events listing, additional reading and website recommendations, chapter notes, glossary, and index.

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