(71)Developments in two materials--iron and concrete--formed the technological basis for much modern architecture. In 1779 English architect Thomas Pritchard designed the first structure built entirely of cast iron: Ironbridge, a bridge over the River Severn in England. At around the same time, another Englishman experimented with a compound of lime, clay, sand, and iron slag (矿渣) to produce concrete. Iron had been used since ancient time to tie building elements together, but after the construction of Ironbridge it took on a new role as a primary structural material. (72)Builders throughout Europe and North America began to set up houses with beams of iron instead of wood.
(73)One of the most spectacular examples of early iron construction was the Crystal Palace in London, England. Spreading over 18 acres, the building consisted entirely of screens of glass set within iron frames. Paxton adapted two major features of the architecture of the Crystal P
(71)Developments in two materials--iron and concrete--formed the technological basis for much modern architecture. In 1779 English architect Thomas Pritchard designed the first structure built entirely of cast iron: Ironbridge, a bridge over the River Severn in England. At around the same time, another Englishman experimented with a compound of lime, clay, sand, and iron slag (矿渣) to produce concrete. Iron had been used since ancient time to tie building elements together, but after the construction of Ironbridge it took on a new role as a primary structural material. (72)Builders throughout Europe and North America began to set up houses with beams of iron instead of wood.
(73)One of the most spectacular examples of early iron construction was the Crystal Palace in London, England. Spreading over 18 acres, the building consisted entirely of screens of glass set within iron frames. Paxton adapted two major features of the architecture of the Crystal P
(1)Developments in two materials--iron and concrete--formed the technological basis for much modern architecture. In 1779 English architect Thomas Pritchard designed the first structure built entirely of cast iron: Ironbridge, a bridge over the River Severn in England. At around the same time, another Englishman experimented with a compound of lime, clay, sand, and iron slag (矿渣) to produce concrete. Iron had been used since ancient time to tie building elements together, but after the construction of Ironbridge it took on a new role as a primary structural material. (2)Builders throughout Europe and North America began to set up houses with beams of iron instead of wood.
(3)One of the most spectacular examples of early iron construction was the Crystal Palace in London, England. Spreading over 18 acres, the building consisted entirely of screens of glass set within iron frames. Paxton adapted two major features of the architecture of the Crystal Pala
(1)Developments in two materials--iron and concrete--formed the technological basis for much modern architecture. In 1779 English architect Thomas Pritchard designed the first structure built entirely of cast iron: Ironbridge, a bridge over the River Severn in England. At around the same time, another Englishman experimented with a compound of lime, clay, sand, and iron slag (矿渣) to produce concrete. Iron had been used since ancient time to tie building elements together, but after the construction of Ironbridge it took on a new role as a primary structural material. (2)Builders throughout Europe and North America began to set up houses with beams of iron instead of wood.
(3)One of the most spectacular examples of early iron construction was the Crystal Palace in London, England. Spreading over 18 acres, the building consisted entirely of screens of glass set within iron frames. Paxton adapted two major features of the architecture of the Crysta
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