Civil Engineering Syallabus

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Tacheometric Surveying

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Tacheometric Surveying   Download - Click Here Dr.Gunathilaka M.D.E.K. Senior Lecturer  Department of Surveying and Geodesy Faculty of Geomatics Sabaragamuwa University of Sri Lanka. 70140, Belihuloya. Branch of surveying in which both horizontal & vertical distances between stations are determined from instrumental observations (Agor, 1996). Uniqueness! No need of slope corrections, tension, etc... since no chaining involved. Rapid & convenient Good for rugged terrains with deep valleys, mountains, across water bodies... But low accuracy... Purpose; Preparation of contour plans with details. Widely used in preliminary site locating for railways, roads, canals, reservoirs, etc...  
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7 LAB TESTS ON AGGREGATE TO CHECK QUALITY FOR USE IN ROAD WORK

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Tests on Aggregate Aggregate plays an important role in pavement construction. Aggregates influence, to a great extent, the load transfer capability of pavements. Hence it is essential that they should be thoroughly tested before using for construction. Not only that aggregates should be strong and durable, they should also possess proper shape and size to make the pavement act monolithically. Aggregates are tested for strength, toughness, hardness, shape, and water absorption. In order to decide the suitability of the aggregate for use in pavement construction, following tests are carried out: Crushing test Abrasion test Impact test Soundness test Shape test Specific gravity and water absorption test Bitumen adhesion test 1. Crushing Test Fig-1 Crushing Test Setup One of the model in which pavement material can fail is by crushing under compressive stress. A test is standardized by IS: 2386 part-IV and used to determine the crushing strength of aggregates. Th...
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Properties of Engineering Materials

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Properties of Engineering Materials Download - Click Here What do engineers do?  Engineers apply the principles of science and mathematics to develop economical solutions to technical problems.  They are concerned with the structure and properties of materials used in modern technology to improve the design and fabrication What are materials? The term “material” is defined in different ways. Materials are the substances of which something is  made or composed of. Can simply group them as;  Solid  Liquid  Gas Historical Development Materials have been fundamental to the development of civilization. materials used by the different civilizations such as  Stone Copper  Bronze Iron age Material age
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