The Leaning Tower of Pisa was constructed from limestone and lime mortar to which marble was also added. Much of the limestone was covered in white marble from San Giuliano, but it was later replaced with other types of marble during restoration. The limestone has played a large part in keeping the tower from deteriorating as much as it could with the leaning issues of the tower.
The tower was not built at one time. There were many interruptions that slowed and sometimes halted the building. The first pause in construction was from lack of funds. There was nearly a century before construction began again, and it took nearly another to finish it.Learn More
Construction of the Taj Mahal cost more than 32 crore rupees, according to Tajmahal.org.uk, which in today's currency is more than $200 million dollars for the building and its surroundings. More than 20,000 workers contributed, and construction took place over a 22-year period from 1631 to 1653.Full Answer >
Lady Liberty, which is generally referred to as the Statue of Liberty, is holding a "tabula ansata," which is a tablet that evokes the law. The tablet is inscribed with the date July 4, 1776, which is the date of the signing of the Declaration of Independence.Full Answer >
Mathematics is the foundation of architecture. The relationship between math and architecture dates back to the earliest examples of man's building of functional structures. In ancient Byzantine, Egyptian, Greek, Islamic and Roman societies, mathematicians were architects, and architects were mathematicians. Mathematicians were called upon when great structures like pyramids, stadia, temples, ziggurats and irrigation projects were to be designed and built.Full Answer >
Architects use the Pythagorean theorem, which is expressed by the equation: a2 + b2 = c2, in designing and computing the measurements of building structures and bridges. One example involves roof design. A gable roof is made of two right triangles, where the base of one right triangle is called the run, the height is called the rise and the slope is called the rafter.Full Answer >