This glossary of civil engineering terms pertains specifically to civil engineering and its sub-disciplines. A.R.E.A – American Railway Engineering Association. (2) For bituminous material: aggregate which retained on a sieve of 3 mm square opening. GULLEY: (1) A pit in the gutter by the side of a road. She showed the investors her model, a scaled down version of the redesigned corporate headquarters. STRIPPING: (1) Loss of binder (Bituminous film) from aggregate particles or from a road surface, due to presence of water. RELEASE AGENT OR PARTING AGENT OR PARTING COMPOUND: A general term that includes any greases, mould oils or sealants, laid over forms or form linings either to ensure a good finish to the concrete, to prevent concrete bonding to forms or to improve the durability of the form or for both. The most important admixtures for concrete are accelerators, air-entraining agents, plasticizers and retarders. RUTTING: Formation of longitudinal depressions by the displacement of soils or surfaces under traffic. The End of Work: The Decline of the Global Labor Force and the Dawn of the Post-Market Era. The second type of bleeding occurs after compaction, water segregates beside or under the steel or larger stones, weakening the bond between them and the body of the concrete. DYKE: (1) A mound of earth along a river or channel bank to retain floodwater. MOVEMENT JOINTS IN CONCRETE: Movement joints may be of five types, though it is possible for one to combine the properties of one or more others. FILL: Earthwork in embankment or backfilling. Authentic Content Consist meter test. Typically block cracks form an interconnected network of nearly square shapes varying in size from 1 square foot to several square feet.

ACQUISITION: The process of obtaining Right-of-Way. LOSS OF PRESTRESS: Losses of pre-stressing force after transfer arise mainly through elastic shortening, shrinkage and creep of the concrete and creep of the steel. Energy may be inherent in the speed of a body (Kinetic energy) or in its position relative to another body (Potential energy). (2) A durable coating of plastics such as epoxy resin or polyurethane, painted on the face of form lining or timber formwork to enable it to be reused many times. TRAFFIC LANE: That portion of a travelled way for the movement of a single line of vehicles.

FROST: Weather during which dew is deposited as ice. Slag is also used in making expanding cement and super-sulphated cement.

ABRASION: The process of wearing away by friction. RIGHT-OF-WAY: A general term denoting land, property of interest therein, usually in a strip, acquired for or devoted to transportation purposes. Related Tags: engineering – civil engineer – structural – concrete – construction – dictionary – definition – soil – cement – foundation – definitions – mixing – term – surveying – water – seasoning – glossary – materials. CHROMATING: Priming with lead or zinc to prevent forming of rust.

The zoning department gave the engineering firm a license to build the apartment complex in the neighborhood. LLOYD DAVIES FORMULA: A method for calculating the run-off, from which the sizes of sewers are calculated (Runoff water in cubic feet = 60.5 × area drained in acres × rainfall in inches per hour × impermeability factor). GUNITE, SHOTCRETE: A cement-sand mortar, thrown on to formwork or walls or rock by a compressed-air ejector, which forms a very dense, high-strength concrete.

Consolidation only occurs with clays or other soils of low permeability; it is not the same as compaction, which is a mechanical, immediate process and only occurs in soils with at least some sand. This term is used interchangeably with surfacing. VIBRATOR: A tool which vibrates at a speed form 3,000 to 10,000 rpm and is inserted into wet concrete or applied to the formwork to compact the concrete. SHEAR: (1) The strain upon, or the failure of a structural member at a point where the lines of force and resistance are perpendicular to the member. The strength loss is roughly 5% for each 1% air entrained.

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LEDGE: A horizontal projection or cut forming a shelf, cliff or rock wall. EXTRAPOLATE: To project tested values, assuming a continuity of an established pattern. INVERT LEVEL: The level of the lowest part of a pipe invert. RIGIDITY: Resistance to twisting or shearing. #english #ESL #language

(2) Removing formwork. DIVIDED HIGHWAY: A highway with separated traveled ways for traffic, generally in opposite directions.

The neutral axis passes through the center of area of the section (Centroid), if it is of homogeneous material. (2) Upward migration of bituminous material resulting in a film of asphalt on the surface.

It requires very much less water for effective placing than does concrete compacted by punning, therefore it is much stronger. PAVEMENT: The uppermost layer of material placed on the travelled way or shoulders. The first occurs during compaction, water can flow out of concrete, lie on its surface, and thus encourage good curing for the first few hours during hot weather. DIAPHRAGM: (1) A stiffening plate in a bridge between the main girders in a bridge or a stiffening web across a hollow building block. It is essential that individual parts of … JOINT SEALANT: A material used as a filler in concrete pavement joints to prevent infiltration of water, soil and other fine particles. Whether you're a student, an educator, or a lifelong learner, can put you EMBANKMENT: A ridge of earth or rock placed, shaped and compacted to carry a road, railway, canal, etc., or to contain water. CHAINAGE: A length (Usually 100 feet) measured by chain or steel tape. ARTERIAL HIGHWAY: A general term denoting a highway primarily for through traffic usually on a continuous route. A.R.E.A – American Railway Engineering Association. TERZAGHI-MEYERHOFF EQUATION: This equation is used to find the gross (ultimate) bearing capacity or gross pressure for a soil: THRUST: A horizontal force, particularly the horizontal force exerted by retained earth. Personalized Units Clays are particularly liable to slips. Ex. November 22, 2017 by admin 8 Comments. SCALING: A delamination of a thin portion of the top of Portland cement concrete. Their location is important. EMULSION: A mixture with water. BLOCK CRACK: A crack caused by shrinkage of the bound surface material. INHERENT SETTLEMENT: The sinking of a foundation due only to the loads which it puts on the soil below it and not to the loads on any nearby foundations. FORMWORK: The wood molds used to hold concrete during the placement and curing processes. LIQUID LIMIT: The moisture content at the point between the liquid and the plastic states of a clay. AS-BUILT DRAWINGS OR RECORD DRAWINGS: Construction drawings revised to show significant changes made during the construction process, usually based on marked-up prints, drawings and other data furnished by the contractor or the Engineer. PLASTICITY: The property of a soil which allows it to be deformed beyond the point of elastic recovery without cracking or appreciable volume change. BITUMINOUS SEAL COAT: A thin bituminous application to a surface or wearing course to seal and waterproof small voids and to embed sand or chips to provide better traction. MEMBRANE: A thin film or skin, such as the skin of a soap bubble or a waterproof skin. DEFORMED BAR: A reinforcing bar with ridges to increase bonding between the reinforcing bar and concrete. SUBGRADE: The roadbed materials beneath the pavement structure.

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ADHESION OR BOND: The sticking together of structural parts by mechanical or chemical bonding using a cement or glue. FLY-ASH: The ash which goes to the chimney from pulverized coal and is caught in the flue gas dust extractors. REFLECTIVE CRACK: Crack in a pavement surface layer caused by the high stresses from movements of a cracked underlying layer.