WELCOME TO OUR Building dictionary : Human exposure to hydraulic splitter PROJECT
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Summary: Building dictionary to explain building jargon and terminology from A - Z.
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Building dictionary for the letter H - Page 11
Human exposure
The subjection of a human being, through inhalation, to levels of airborne contaminants, taking into consideration concentration of contamination and duration or exposure.
Humidifier
A mechanical apparatus to add moisture to the air or other material.
Humidistat (hygrostat)
The automatic regulating device of a humidifier or humidifier');">dehumidifier which is sensitive to and actuated by changes in humidity.
Humidity
The water vapor contained in a given space, area, or environment.
Humus
Soil-like organic substance composed of decayed or decaying organic matter.
Hung door
A swing door fixed with hinges.
Hung ceiling
A nonstructural ceiling having no bearing on walls, being entirely supported from above by the overhead structural element(s) from which it is suspended.
Hung sash
A sash hung from its sides by cords or chains, whose other ends are secured to counterweights to allow movement in the vertical plane.
Hung window
A window containing one or more hung sashes.
Hybrid
The result of breeding plants of two different varieties.
Hydrant point
A discharge connection to a water main, usually having a nozzle and controlled by a valve.
Hydrated lime
A dry, relatively stable product derived from slaking quicklime.
Hydration
(1) Any chemical action occurring as the result of combining a material with water. (2) The chemical reaction that occurs when cement is mixed with water.
Hydraulic
Characterized or operated by fluid, especially under pressure.
Hydraulic pile driving
The employment of hydraulic force to drive sheet piles.
Hydraulic excavator
A powered piece of excavating equipment having a hydraulically operated bucket.
Hydraulic jack
A mechanical lifting device incorporating an external lever to which force is applied to cause a small internal piston to pressurize the fluid, usually oil, in a chamber. The pressure exerts force on a larger piston, causing it to move vertically upward and raise the bearing plate above it.
Hydraulic lift
An elevator car or platform moved by a piston, or plunger, powered by a pressurized fluid, usually oil, in a cylinder.
Hydraulic pump
The device causing the fluid to be forced through a hydraulic system.
Hydraulic splitter
A concrete- or rock-cracking mechanism incorporating a wedge inserted into a predrilled hole and then expanded by hydraulic power to cause the cracking.
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