Terms Flashcards
A series of interconnected of interfaced cracks caused by fatigue failure of the asphalt concrete surface under repeated traffic loading.
Alligator Cracking
The height between the trough and the crest of a wave.
Amplitude
A layer consisting of properly designed mix od coarse aggregate fine aggregate, a filler and a bituminous binder.
Asphatic Concrete
The average of the spot speeds of all vehicles passing a given point in the highway.
Average Speed
Highway appurtenances designed to prevent vehicular penetration from the travel way to areas behind the barrier such as to minimize damage to impacting vehicles and their occupants and to reduce the risk of injuries to pedestrians and workers.
Barriers
The component of the road structure which receives the traffic load and transfer it to the subgrade.
Base
This normally consists of aggregates such as gravel and crushed rock.
Base courses
The max number of passenger cars that can pads a given point on a lane or roadway during one hour under the most nearly ideal roadway and traffic conditions which can possibly be attained.
Basic capacity
Process of proportioning cement, water, aggregates and additives prior to mixing concrete.
Batching
The physical configuration of the seabed, the measurements of depths of water in the ocean, etc. and also information derived from such measurement.
Bathymetry
The physical configuration of the seabed, the measurements of depths of water in the ocean, etc. and also information derived from such measurement.
Bathymetry
The physical configuration of the seabed, the measurements of depths of water in the ocean, etc. and also information derived from such measurement.
Bathymetry
The physical configuration of the seabed, the measurements of depths of water in the ocean, etc. and also information derived from such measurement.
Bathymetry
The physical configuration of the seabed, the measurements of depths of water in the ocean, etc. and also information derived from such measurement.
Bathymetry
An instrument use to measure intensity of wind
Beuforts Scale
An instrument use to measure intensity of wind
Beuforts Scale
The mooring fitting for mooring ships during a storm installed close to the water line of the berth.
Bitt
A 20 mm thick premix bitumen layer over which is laid a seal coat.
Bitumen carpet
The exuding of bitumen onto the pavement surface causing a reduction in skid resistance.
Bleeding / Flushing
Cracks forming large interconnected polygons, usually with sharp corners or angles. These cracks are generally caused by hardening and shrinkage of the asphalt and/or reflection cracking from underlying layers such as cement treated base.
Block Cracking
Localized upward buckling and shattering of the slabs at traverse joins or cracks
Blowups
The structure that protects harbor from stormy waves and permits calm in the harbor.
Breakwater
Distance traveled by the vehicle after the application of the brakes until it will stop.
Braking Distance
Waves which fall forward since the forward velocity of the crest particles exceeds the velocity of propagation of the wave itself. In deep water, this normally occurs when the wave length L is less than 7 times the wave height H (L < 7H) and in shallow water when the depth d is approximately equal to 1.25 H
Breaking Waves
Type of dolphins which are designed to take the impact of the ship when docking and to hold the ship against a broadside wind. Therefore, they are provided with fenders to absorbed the impact of the ship and to protect the dolphin and the ship from damage.
Breasting dolphins
- a vertical post to which the eye of a morring line can be attached
- the mooring fitting for mooring ships during a storm installed at the outside or outside/inside of the berth far from the waterline
Bollard
These consist of two curves in the same direction separated by a short tangent.
Broken Back Curve
A structure for retaining or to prevent earth or fill from sliding into water.
Bulkhead
The maximum sustained 15 min rate of flow, expressed in passenger cars per hour per lane, which can be accommodated by a uniform freeway segment under prevailing traffic and roadway conditions in one direction.
Capacity
The points at which the cut or fill slopes intersect the existing ground.
Catch Point
Markings that are often used to guide traffic into the right turning lanes separated by an island, such as corner island at a signalized intersection.
Chevron Markings
These are usually laid out in the field by occupying the tangent to curve point TC with a transit and then establishing successive points by turning deflection angles and measuring chords
Circular Curves
The pressure against a vertical wall due to waves.
Clapotis
This term refers to any material consisting of a mixture of aggregates, such as sand, gravel, or crushed stone, fastened together by cement.
Concrete
These result when two curves of differing radius join one another.
Compound Curve
Joints provided in concrete cement pavement is suspended
Construction joint
A type of rigid pavement, which has no transverse joints, except construction joints or expansion joints when they are necessary at specific positions such as at bridges. This type of pavement is typically used on high-volume, high-speed roadways
Continously reinforced concrete pavements
This is the cost of any material that has to be obtained off job site in order to make a fill.
Cost of borrow
This traffic conflict occurs when they cross paths directly
Crossing conflicts
These are normally specified in m/m or in percentages. In railway practice, cross slopes may be expressed in millimeters that the high rail is above the low rail, since there is a standard horizontal distance maintained between rails
Cross slope
The process of providing the required water and maintaining a favorable temperature for a period of time after placing concrete
Curing
The existing ground is above the construction section
Cut / Excavation
Primary consideration in the design of geometric cross sections for highways, runways, and taxi ways.
Drainage
Waves in which the ratio of water depth to the wavelength is greater than 0.5
Deep water waves
Difference between the actual travel time and a given segment of a transportation system and some ideal travel time for that segment
Delay
Light retro reflecting devices mounted at the side of the roadway in series to indicate the roadway alignment
Delineator
It is defined as the number of vehicles per unit distance occupying a thsection of roadway at a given instant time and is usually measured in vehicles per mile or per km.
Density
Defines as the maximum safe speed that can be maintained over a specified section of highway when conditions are so favorable that the design features of highway govern.
Design Speed
Markings which are placed on sealed shoulders or other sealed portion of the road where traffic is not desired.
Diagonal markings
The spread of energy along a wave crest.
Diffraction
Defined as the fraction of time that vehicles are present at a point in space.
Distance gaps
The reciprocal of density which is usually measure in vehicles per mile or per kilometer.
Distance separation
Tide which occurs only one high tide a day.
Diurnal tides
The process by which a vehicle in a traffic stream leaves that traffic stream, such as a vehicle leaving the outside lane if an expressway.
Diverging
The process by which a vehicle in a traffic stream leaves that traffic stream, such as a vehicle leaving the outside lane if an expressway.
Diverging
This traffic conflict occurs when vehicles leave the traffic stream.
Diverging conflicts
The primary consideration in the design of geometric cross sections for highways, runaways, and taxiways.
Drainage
Progressive disintegration of the surface between the heel paths caused by dripping of gasoline or oil from vehicles.
Drip track raveling
An artificial basin for vessels when the basin is pumped out.
Dry dock
The time that a wind blows across the water.
Duration
These quantities are normally expressed as volumes, in metric units, they are given in cubic meters.
Earthwork
These are in meters above some datum; usually this datum is mean sea level, but it may be any arbitrary scale.
Elevation
The time linked with the two stages perception and intellection based on a particular traffic situation like fear or anger which has a vital influence on the final message or decision sent by the brain to the muscle.
Emotion
These include cost estimates for various parts of the project and are used to evaluate the acceptability of bids and the financial feasibility of the project.
Estimates
Divided arterial highway for through traffic with full or partial control of access and generally with grade separations at major intersection.
Expressway
Primarily involved in planning designing, constructing, maintaining, and operating fixed facilities.
Facility-oriented organization
An open water with navigable depth.
Fairway
Elevation difference between adjacent slabs at traverse joints. This is usually the result of pumping and is a major source of Portland concrete pavement
Faulting
The distance that the wind blows over the sea in generating the waves is known as:
Fetch
The existing ground is above the construction section.
Fill or embankment
A marine structure consisting of dolphins for tying up the ship and a platform for supporting the cargo handling equipment.
Fixed mooring berth
Warning devices use to supplement either controls and devices necessary to alert motorist of construction and maintenance activities of obstruction in roadway
Flashing lamps
A pavement that has negligible flexural strength.
Flexible