Civil Engineering Dictionary Terms : T

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Sr.TermDefinition
1Tack CoatA thin coat of bitumen, road tar or emulsion laid on a road to improve the adhesion of a course above it.
2Tandem RollerA road roller having rolls (drums) of about the same diameter behind each other on the same track.
3Tack WeldA temporary half-inch thick weld that holds steel parts together during fabrication.
4Temperature SteelReinforcement which is inserted in a slab or other concrete member to prevent cracks due to shrinkage or temperature stresses from becoming too large. It generally amounts to a minimum of about 0.1% of the cross-section in any direction. The requirement for a slab, which is two-dimensional, being therefore about 0.2% altogether.
5Temperature StressA stress due to temperature rise or drop. If the expansion due to temperature rise or the contraction due to temperature drop is restrained, the member concerned is stressed in compression during rising temperature or tension during falling temperature.
6TendonA prestressing bar, cable, rope, strand or wire.
7Terzaghi-Meyerhoff EquationThis equation is used to find the gross (ultimate) bearing capacity or gross pressure for a soil:
8ThrustA horizontal force, particularly the horizontal force exerted by retained earth.
9TopsoilThe topmost layer of the soil which by its humus content supports vegetation. It is usually the top one foot of the soil.
10ToleranceAcceptable variation from a standard size.
11ToughnessThe resistance of a material to repeated bending and twisting.
12Torgue, Torsion Or TwistThe twisting effect of a force on a shaft applied tangentially, like the twist on a haulage drum which winds rope on to its circumference.
13Traffic LaneThat portion of a traveled way for the movement of a single line of vehicles
14Travel LaneWhen used to distinguish between passing lane and travel lane, the travel lane is the right lane of a two lane roadway with both lanes going in the same direction. Usually both the passing lane and the travel lane are considered travel lanes with the passing lane considered to be the right travel lane.
15Traveled WayThe portion of the roadway for the movement of vehicles exclusive of shoulders and auxiliary lanes.
16TrussA frame, of steel, but also sometimes of timber, concrete, or light alloy, to carry a roof or bridge, built up wholly from members in tension and compression. It is generally a perfect frame or nearly so, and may be pin jointed.
17TurfingThe covering of an earth surface with growing grass cut from another site. It can also be revetment to slopes which are usually covered by water, made by laying turves on the slope according to a technique like sliced blockwork.

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