Civil Engineering Dictionary Terms : B

Advertisement

A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z

Sr.TermDefinition
1BallastCoarse stone or hard clinker, sand or slag carried by a moving unit to keep it held down or to keep equilibrium steady.
2BankA mass of soil rising above a digging level.
3Base CourseOne or more layers of specified materials of designed thickness (Usually asphaltic concrete course), placed on a subbase course or a subgrade to support a surface course.
4Basement MaterialThe material in excavation or embankment underlying the lowest layer of subbase, base, pavement, surfacing or other specified layer which is to be placed on.
5BasinA receptacle for runoff (Storm) water.
6BatterInward slope from bottom to top of a wall face.
7BermAn artificial horizontal ledge in an earth bank or cutting to ensure the stability of a steep side slopes of roadbed (Shoulder). Also berms are built to hold water on land that is to be flood irrigated.
8BeamA horizontal structural member designed to resist loads which bend it.
9Bearing(1) The supporting section of a beam length or area. (2) The compressive stress between a beam and its support (bearing pressure), particularly on foundations. (3) The horizontal angle turned between a datum direction such as true north and a given line.
10Bench MarkA relatively fixed point whose elevation is known and used as a datum for leveling.
11Bending FormulaFormula for beams of any homogeneous material. Moment (M)= Stress X Modulus of Section or (M)= Force X Arm
12Bernoulli EquationIs an Energy equation for two points along the bottom of an open channel experiencing uniform flow.
13BidderAny individual, firm, partnership, corporation, or combination thereof, submitting a proposal for the work contemplated, acting directly or through a duly authorized representative.
14Binder(1) A material such as cement, tar, bitumen, gypsum plaster, lime, or similar material, when mixed with other material, it causes unifomity, consistency, solidification or cohesion. (2) The clay or silt in hoggin or the cement rock. (3) A stirrup or steel rod usually about 6 to 10 mm diameter used for holding together the main steel in a reinforced-concrete beam or column.
15Bituminous Seal CoatA 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.
16Bleeding Or Flushing(1) Separation of clear water from the cement paste of mortar or concrete. Two types are known, the first beneficial, the second harmful to concrete strength, but they may co-exist. 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. 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. A plasticizer should enable the water to cement ratio to be lowered to reduce this type of bleeding. (2) Upward migration of bituminous material resulting in a film of asphalt on the surface.
17BlemishAny imperfection which mars the appearance of wood, concrete, paint or other finished surface.
18BlindingMat or mattress or sealing coat. A layer of lean concrete usually 2 to 4 inches thick, put down on soil such as clay to seal it and provide a clean bed for reinforcement to be laid on.
19BlotterAbsorbant material (i.g., sand) to dry freshly wet surfaces.
20BoringA drilling into the earth to bring up samples of the soil.
21BorrowSuitable material excavated from sources outside the roadway prism (i.g., Borrow Pit), to provide fill elsewhere, primarily for embankment.
22BoulderA rock which is too heavy to be lifted readily by hand.
23BoulevardA wide city street usually planted with shade-trees (Landscaped).
24BridgeA single or multiple span structure, including supports, erected over a depression or an obstruction such as water, a highway or railway and having a track or passageway for carrying traffic.
25Bridge BearingThe support at the bridge pier or abutment, which carries the weight of a bridge.
26Bridge DeckThe load-bearing floor of a bridge, that carries and spreads the loads to the main beams.
27Bridge LengthThe greater dimension of a structure measured along the center of the roadway between backs of abutment backwalls or between ends of the bridge floor.
28Bridge Roadway WidthThe clear width of structure measured at right angles to the center of the roadway between the bottom of curbs or between the inner faces of parapet or railing.
29BypassRoad joining two parts of an older road to avoid a town or village.

A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z

%d bloggers like this: