A construction vehicle that spreads a specified thickness of bituminous mixture over a prepared surface.



Related Terms

RO/RO SHIP

Cargo or ferry ship on which trucks and other vehicles can be driven on and off on ramps through large openings at the bow, stern or side

SEAWORTHINESS

The condition of a vessel with regards to materials, construction, equipment, crew and outfit which is considered safe for the trade in which it is employed

SHELL EXPANSION

A plan showing the seams and butts, thickness and associated welding or riveting of all plates comprising the shell plating, framing, etc.

BURNER

A device which combines fuel and air in proper proportions for combustion and which enables the fuel-air mixture to burn stably to give a specified flame size and shape.

DEFLECTOR

A device used to change the direction of a stream of air or of a mixture of pulverized fuel and air.

DESIGN PRESSURE

The pressure used in the design of a boiler for the purpose of determining the minimum permissible thickness or physical characteristics of the different parts of a boiler.

DIFFUSION (RAW GAS) FLAME

Combustion state controlled by mixing phenomena. Fuel and air diffuse into one another until a flammable mixture ratio is achieved.

FLAMMABILITY LIMITS

The upper and lower bounds of the fuel/air mixture which will support combustion. The upper flammability limit indicates the maximum fuel concentration in air that will support combustion. The lower flammability limit indicates the minimum fuel concentration in the air that will support combustion. Outside of these bounds the mixture does not burn.

FLASHBACK

A phenomenon occurring only in pre-mix gas burners when the flame speed overcomes the gas-air mixture flow velocity exiting the gas tip. The flame rushes back to the gas orifice and can make an explosive sound when flashback occurs. Flashback is most common when hydrogen is present in fuel gas.

MOLD LOFT

A floor space used for laying down the full size lines of a ship for making templates for construction

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