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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 D - Page 8
Dimensionally stable
Refers to any building material whose shape does not alter appreciably with changes in temperature, moisture, and loading conditions.
Diminishing course
See graduated course.
Diminishing pipe (taper pipe)
A pipe reducer.
Diminishing stile
See diminished stile.
Dimmer
An electrical device that varies the amount of light given off by an electrical lamp by varying the current.
Dimples
A colloquial term used to describe the round depressions left in wall board by a hammer driving nails. Dimples are beneficial as they provide a bed to hold the joint compound applied to hide nail head
Dining room
A formal room or area used to serve meals and entertain visitors.
Diorama
A three-dimensional scene constructed to scale, usually with a painted background.
Direct leveling
The determination of the difference in elevation of two or more points using a surveyor's level and a graduated rod.
Direct luminaire
A luminaire that directs 90% to 100% of its light downward.
Direct nailing
See face nailing.
Direct costs
The labor, material, subcontractor, and heavy equipment costs directly incorporated into the construction of physical improvements.
Direct current
A term applied to an electrical circuit in which the current flows in one direction only.
Direct damages
Damages that can be expected to arise as a matter of course from a breach.
Direct drive
A system in which the driver and the driven element (motor and fan) are positively connected in line to operate at the same speed.
Direct expense
All cost items that are directly incurred by or chargeable to a project, assignment, or task.
Direct heating
The heating of a space by means of exposed heated surfaces or a heat source such as a stove, a radiator, or fire.
Direct lighting
A lighting system, usually emitting light in a downward direction, that distributes 90% to 100% of its light in the direction of the surface to be lit.
Direct personnel expense
Salaries and wages, including fringe benefits, of all principals and employees attributable to a particular project or task.
Direct return system
A heating or cooling system in which the heating or cooling fluid is returned from the heat exchanger to the boiler or evaporator by the shortest, most direct route.
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