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Blackwall Rock
The Blackwall Rock was a reef in the River Thames in East London. The rock provided a useful shelter for moored vessels, but also proved a hazardous obstruction to river navigation. It was removed in the early 19th century following the opening of the adjacent West India Docks. Description Blackwall Rock was located a short distance upriver of Blackwall Stairs, the southern end of a causeway from Poplar High Street which crossed extensive marshland, between the entrances of the West and East India Docks. The rock was always a hazard to river traffic, as it sometimes lay less than below the surface at low tide. The entrance to the West India Docks, just to the south-west of the rock, was substantially obstructed by the reef upon the docks' opening in 1802. In 1803, in his ''Strictures on the Alarming Progress of the Blackwall Rock in the River Thames'', Robert Edington wrote that he surveyed the rock under the direction of the Corporation of the City of London's harbourmaster, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Richard Horwood
Richard Horwood (1757/8 – 3 October 1803) was a surveyor and cartographer. He is mainly remembered for his large-scale plan of London and its suburbs published in 32 sheets between 1792 and 1799. He also published a plan of Liverpool in six sheets in 1803. Map of London Between 1792 and 1799 Horwood published a ''Plan of the Cities of London and Westminster the Borough of Southwark and Parts adjoining Shewing every House''. At the time this was the largest map ever printed in Britain. After he decided to chart the entire city of London, down to each individual building, Horwood set about soliciting subscriptions to finance the project in 1790. His intention was to publish the complete map within two years, at a scale of 26 inches to the mile. However, the scope of the project was so extensive, and his cost to complete it so high, that rather than taking the estimated two years, the project took almost ten to complete. Despite acquiring royal patronage from King George III, the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Piling
A deep foundation is a type of foundation that transfers building loads to the earth farther down from the surface than a shallow foundation does to a subsurface layer or a range of depths. A pile or piling is a vertical structural element of a deep foundation, driven or drilled deep into the ground at the building site. There are many reasons that a geotechnical engineer would recommend a deep foundation over a shallow foundation, such as for a skyscraper. Some of the common reasons are very large design loads, a poor soil at shallow depth, or site constraints like property lines. There are different terms used to describe different types of deep foundations including the pile (which is analogous to a pole), the pier (which is analogous to a column), drilled shafts, and caissons. Piles are generally driven into the ground in situ; other deep foundations are typically put in place using excavation and drilling. The naming conventions may vary between engineering dis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coffer Dam
A cofferdam is an enclosure built within a body of water to allow the enclosed area to be pumped out. This pumping creates a dry working environment so that the work can be carried out safely. Cofferdams are commonly used for construction or repair of permanent dams, oil platforms, bridge piers, etc., built within water. These cofferdams are usually welded steel structures, with components consisting of sheet piles, wales, and cross braces. Such structures are usually dismantled after the construction work is completed. The origin of the word comes from ''coffer'' (originally from Latin ''cophinus'' meaning "basket") and ''dam'' from Proto-German ''*dammaz'' meaning "barrier across a stream of water to obstruct its flow and raise its level"). Uses For dam construction, two cofferdams are usually built, one upstream and one downstream of the proposed dam, after an alternative diversion tunnel or channel has been provided for the river flow to bypass the foundation area of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Richard Trevithick
Richard Trevithick (13 April 1771 – 22 April 1833) was a British inventor and mining engineer. The son of a mining captain, and born in the mining heartland of Cornwall, Trevithick was immersed in mining and engineering from an early age. He was an early pioneer of steam-powered road and rail transport, and his most significant contributions were the development of the first high-pressure steam engine and the first working railway steam locomotive. The world's first locomotive-hauled railway journey took place on 21 February 1804, when Trevithick's unnamed steam locomotive hauled a train along the tramway of the Penydarren Ironworks, in Merthyr Tydfil, Wales. Turning his interests abroad Trevithick also worked as a mining consultant in Peru and later explored parts of Costa Rica. Throughout his professional career he went through many ups and downs and at one point faced financial ruin, also suffering from the strong rivalry of many mining and steam engineers of the day. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
James Spedding (engineer)
James Spedding (28 June 1808 – 9 March 1881) was an English author, chiefly known as the editor of the works of Francis Bacon. Life He was born in Cumberland, the younger son of a country squire, and was educated at Bury St Edmunds and Trinity College, Cambridge; where he took a second class degree in the classical tripos, was a Cambridge Apostle, and was junior ''optime'' in mathematics in 1831. In 1835 he entered the Colonial Office, but he resigned this post in 1841. In 1842 he was secretary to Lord Ashburton on his American mission, and in 1855 he became secretary to the Civil Service Commission; but from 1841 onwards he was constantly occupied in his researches into Bacon's life and philosophy. On 1 March 1881 he was knocked down by a cab in London, and on the 9th he died of erysipelas. Spedding's major edition of Bacon's works was begun in 1847 in collaboration with Robert Leslie Ellis and Douglas Denon Heath. In 1853 Ellis had to leave the work to Spedding, with the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ralph Walker (engineer)
Ralph Walker (1749 – 19 February 1824) was a notable Scottish-born civil engineer in the late 18th and early 19th centuries, particularly associated with harbour engineering works in London. Early life Walker was born in Tullibody, Clackmannanshire, the second son of farmer James Walker and Helen May.Skempton, A.W. (2002) ''A Biographical Dictionary of Civil Engineers in Great Britain and Ireland'', pp. 757-758 He went to the parish school in Dollar and later was sent by his elder brother James to an academy where he learned marine navigation. He travelled to the Caribbean and managed estates in Jamaica belonging to his mother's family before returning to settle in London in 1793 and becoming involved in plans for London's wet docks. Civil engineer Walker submitted designs for the City Canal in 1796 as part of his preliminary designs for the West India Docks on the Isle of Dogs, eventually being appointed resident engineer in August 1799, supervised by William Jessop. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trinity House
"Three In One" , formation = , founding_location = Deptford, London, England , status = Royal Charter corporation and registered charity , purpose = Maintenance of lighthouses, buoys and beacons , headquarters = Trinity House, Tower Hill, London, England , region = , membership = , leader_title = Master , leader_name = Anne, Princess Royal , leader_title2 = Deputy Master , leader_name2 = Captain Ian McNaught , revenue = £38,405,000 (2020) , expenses = £46,801,000 (2020) , staff = 312 (2020) , website trinityhouse.co.uk The Corporation of Trinity House of Deptford Strond, also known as Trinity House (and formally as The Master, Wardens and Assistants of the Guild Fraternity or Brotherhood of the most glorious and undivided Trinity and of Pope Clement I, St Clement in the Parish of Deptford Strond in the County of Ken ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
William Jessop
William Jessop (23 January 1745 – 18 November 1814) was an English civil engineer, best known for his work on canals, harbours and early railways in the late 18th and early 19th centuries. Early life Jessop was born in Devonport, Devon, the son of Josias Jessop, a foreman shipwright in the Naval Dockyard. Josias Jessop was responsible for the repair and maintenance of Rudyerd's Tower, a wooden lighthouse on the Eddystone Rock. He carried out this task for twenty years until 1755, when the lighthouse burnt down. John Smeaton, a leading civil engineer, drew up plans for a new stone lighthouse and Josias became responsible for the overseeing the building work. The two men became close friends, and when Josias died in 1761, two years after the completion of the lighthouse, William Jessop was taken on as a pupil by Smeaton (who also acted as Jessop's guardian), working on various canal schemes in Yorkshire.Rolt, L.T.C., "Great Engineers", 1962, G. Bell and Sons Ltd, ISBN Jessop w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Caisson (engineering)
In geotechnical engineering, a caisson ( or ; borrowed from French ''caisson'', from Italian ''cassone'', meaning ''large box'', an augmentative of ''cassa'') is a watertight retaining structure used, for example, to work on the foundations of a bridge pier, for the construction of a concrete dam, or for the repair of ships. Caissons are constructed in such a way that the water can be pumped out, keeping the work environment dry. When piers are being built using an open caisson, and it is not practical to reach suitable soil, friction pilings may be driven to form a suitable sub-foundation. These piles are connected by a foundation pad upon which the column pier is erected. Caisson engineering has been used at least since the 18th century, and was notably used in the construction of the Brooklyn Bridge, which was completed in 1883. Types To install a caisson in place, it is brought down through soft mud until a suitable foundation material is encountered. While bedrock is pr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Puddingstone (rock)
Puddingstone, also known as either pudding stone or plum-pudding stone, is a popular name applied to a conglomerate that consists of distinctly rounded pebbles whose colours contrast sharply with the colour of the finer-grained, often sandy, matrix or cement surrounding them. The rounded pebbles and the sharp contrast in colour gives this type of conglomerate the appearance of a raisin or Christmas pudding.Neuendorf, K.E.K., J.P. Mehl, Jr., and J.A. Jackson (2005) ''Glossary of Geology.'' Springer-Verlag, New York, 779 pp., The McGraw-Hill Companies (2003) ''McGraw-Hill dictionary of geology and mineralogy'', 2nd ed. The McGraw-Hill Companies, Inc, New York, 420 pp., There are different types of puddingstone, with different composition, origin, and geographical distribution. Examples of different types of puddingstones include the Hertfordshire, Schunemunk, Roxbury, and St. Joseph Island (Drummond Island) puddingstones. Hertfordshire puddingstone Hertfordshire puddingstone is a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Outcrop
An outcrop or rocky outcrop is a visible exposure of bedrock or ancient superficial deposits on the surface of the Earth. Features Outcrops do not cover the majority of the Earth's land surface because in most places the bedrock or superficial deposits are covered by soil and vegetation and cannot be seen or examined closely. However, in places where the overlying cover is removed through erosion or tectonic uplift, the rock may be exposed, or ''crop out''. Such exposure will happen most frequently in areas where erosion is rapid and exceeds the weathering rate such as on steep hillsides, mountain ridges and tops, river banks, and tectonically active areas. In Finland, glacial erosion during the last glacial maximum (ca. 11000 BC), followed by scouring by sea waves, followed by isostatic uplift has produced many smooth coastal and littoral outcrops. Bedrock and superficial deposits may also be exposed at the Earth's surface due to human excavations such as quarrying and bui ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
