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Portland stone is a limestone that is very good for building. A number of very famous constructions around the country are built using Portland Limestone including St Pauls cathedral in London.
dis advantage of ordinary portland
Portland Stone Industry - 1908 was released on: USA: May 1908
Tower Bridge construction was completed in 1894 using 11,000 tons of steel and faced with Cornish granite and Portland stone.
portland stone
Colette Stone was born on August 29, 1991, in Portland, Maine, USA.
Portland Stone
Joseph Aspdin, a leeds buider.Took the patent of portland cement on 21st october 1824He named portland cement in resemblance with a natural stone occurring at portland in England.
advantages of using ICT
Stone, iron and/or steel, concrete, and brick. ADDED: The primary structure of the visible parts of the bridge is a steel frame, clad for weather-protection and appearance by the ornate stone-work.
The Cathedral is build of Portland Stone.
11,000 tons of steel, Cornish granite and Portland stone.