Architectural and Engineering Glossary

D

Dutch Shutter

A shutter,2 whose upper and lower sections can be opened and closed independently of each other.

Dutch Slice Hip Roof

A Dutch gambrel roof in which each end has been clipped off,as in a jerkinhead roof.

Dutch Stoop

A small wooden porch having a wood bench along each side of the entry door;may be covered by a cantilevered hood.

Dutch Tile

A flat,square,decorative tile from Holland often used on the faces of fireplaces;different colors were once available,but Delft blue tiles were probably the most popular.

Dutchman

1.A small piece or wedge inserted as filler to stop an opening.2.A small piece of material used to cover a defect,to hide a badly made joint,etc.3.A short lead nipple used to join two pipes which are otherwise not long enough to be joined.

DVTL

On drawings,abbr.for dovetail.

Dwang

1.A crowbar or similar tool.2.A strut inserted between timbers to stiffen them.

Dwarf Door

A door whose height is somewhat less than normal.

Dwarf Gallery

A passage on the external surface of a wall screened by a small scale arcade. 

Dwarf Partition.

A partition which does not extend to full ceiling height.
 

Dwarf Rafter

Same as jack rafter.

Dwarf Wainscoting

Wainscot that is restricted to the lower part of a wall.

Dwarf Wall

1.A wall of less height than a story of a building.2.A wall which supports the sleeper joists under the lowest floor of a building.

Dwelling

A building designed or used as the living quarters for one or more families.

Dwelling Unit

One or more rooms in a building designed as living accommodations for one or more families.

Dwg,DWG

Abbr.for “drawing.”

DWV

Abbr.for “drainage,waste,and vent.”

DWV Tubing

See type DWV tubing.

Dye

A coloring material or compound that imparts color throughout a material by penetration.

Dyke

See dike.

Dymaxion House

An unconventional light weight house developed and patented in 1928 by R.Buckminster Fuller(1895-1983);originally called the 4-D house,and intended as a prefabricated unit.Octagonal or circular in plan,this experimental house was supported by a massive central shaft that housed all building services,such as electrical and plumbing systems.
 

Dynamic

Said of a structure whose physical behavior characteristics are time related, i.e.are nonstatic.

Dynamic Analysis

The analysis of a structural system as a function of displacement under transient loading conditions.

Dynamic Balancing

See balancing.

Dynamic Load

Any load which is nonstatic,such as a wind load or a moving live load.

Dynamic Loading

Loading by a piece of machinery or equipment which imposes a load in addition to its static load,as a result of its vibration or movement.

Dynamic Modulus Of Elasticity

The modulus of elasticity of a test specimen which is computed from physical characteristics of the specimen(size,weight,and shape) and from its fundamental frequency of vibration.

Dynamic Penetration Test

A penetration test in which penetration into the soil results from the application of a series of blows on a testing device.

Dynamic Pile Formula

Any of several formulas by which the bearing capacity of a driven pile can be calculated from the energy of the pile hammer and the penetration of the pile under each blow.

Dynamic Pressure

The pressure on the inner surface of a pipe when water flows through it;this pressure is in excess of that when the water is at rest.

Dynamic Resistance

The resistance of a pile (or the like) to blows from a pile hammer,expressed in blows per unit depth of penetration. 

Dynamics

That part of the science of mechanics which treats the motion of bodies and the action of forces in producing or changing their motion.

Dyostyle

Same as distyle.