W

Any brace,such as a strut,which strengthens a structure or framework against the wind;usually a brace between a principal rafter and a purlin to provide the roof framing with greater rigidity.

Same as wind scoop.

A tree shaped by the force of a strong wind.

Same as beam fill.

Same as wind load.

1.Any construction which provides protection against the wind,as a chimney cap 2.Same as draft fillet.3.A draft bead.

The total force exerted by the wind on a structure or part of a structure.

The pressure on a surface produced by the wind blowing against it.

A device,especially found in hot regions of the Middle East,that ventilates a house by the use of wind.A small tower on the roof contains an opening that faces the prevailing wind,which is at a cooler temperature than the interior of the house.Because the wind velocity at this opening is greater than it is at the lower windows of the house,air in the shaft of the tower is forced down the shaft to cool the house.

A crack or fissure in timber caused,during growth,by wind strain.

1.A weather strip used around a door or window.2.A strip,usually of wood or metal,covering the joint between a sash or casement and the adjacent stile.3.A wood or metal strip covering a crack of any type in a building to prevent wind from blowing in.

A negative force (i.e., an upward pull) which acts on a roof because of wind.

The highest wind speed that a wall is capable of withstanding.

A loss of fine droplets of water which are entrained by circulating air;this loss of water in a system (e.g.,in the cooling tower of an air-conditioning system) is replaced by makeup water;usually expressed as a percentage of the circulation rate.

A dense growth of trees,fence,wall or the like,which provides protection against the wind,esp.to gardens and buildings.

A step,more or less wedge-shaped,with its tread wider at one end than the other,as in a spiral stair.

On elevators,a gear-driven machine having a drum to which the wire ropes that hoist the car are fastened,and on which they wind.
 

1.Any stair constructed chiefly or entirely of winders.2.See screw stair.

Two short sticks or strips of wood having parallel edges,placed on a surface to test it for flatness.

A modification of the wheel and axle used for lifting weights;usually an axle,turned by a crank,and a rope or chain wound around the axle for raising the weight.

A large machine in which the wind acts on a number of vanes or blades,rotating them about an axis, thereby producing mechanical power;once widely used for grinding grain, sawing timber, and pumping water.The earliest windmills in America (similar to those in the Netherlands) had four very large,slowly moving blades that were cloth-covered,and required the constant attendance of an operator.In 1854,a patent was issued for an entirely new type of windmill, having a large number of smallblades,which was self regulating and could operate without human intervention;this feature greatly increased its practical application,especially for pumping water.In the latter part of the 20th century,large two-bladed windmills have been assembled in large groups called “farms” for the environment friendly generation of electrical power.

An opening, generally in an external wall of a building,to admit light and provide ventilation;usually glazed.The framework in which the glass is set is called a sash;a flat sheet of glass,cut to fit a window,or part of a window,is called a pane.Many early glazed openings had fixed lights(i.e.,could not be opened);others were a combination of fixed lights and a casement window that opened outward.For various types of windows,see angled bay window, art window,awning window, band window,bay window,blank window, bow window,bull’s-eye window,camber window,
 
 

A plain or molded wood strip which covers the edge of the plastering below a window stool.

The inside face of the portion of wall between the windowsill and  the  floor below.

Same as ribbon window.

1.A muntin.2.A glazing bar.3.A bar which prevents ingress or egress through a window.4.A bar for securing a casement or window shutters.

A bay window.

See inside stop,draft bead.

A shade,blind,shade screen,or shutter,1 for a window.
 

Same as window stool.

A small,nonglazed wall opening,usually shuttered,to let in light and air.

Same as weight box.

The finished frame surrounding a window;the visible frame.

A fastening device,fixed to a window sash,to prevent it from being opened from the outside.

A fitting attached securely to the outside of a window frame (or to the wall just outside the frame) to which a window cleaner fastens a safety belt.

A platform operated manually or by power and suspended by cables or ropes from roof assemblies;used to support window cleaners and maintenance personnel. 

The shape,number,and relationship of glass lights,mullions,mutins,tracery,and/or window frames;also see fenestration.
 

The upper termination of a window,such as a pediment;often decorative.

See mullion and muntin.

The trim,2 usually of wood or stone,around a window.

The fixed,nonoperable frame of a window designed to receive and hold the sash or casement and all necessary hardware.

Same as window hardware. 

A soda-lime-silica glass; in the US fabricated in  continuous flat sheets up to 6 ft (1.83 m) wide,in thicknesses from 0.05 to 0.22 in. (1.27 to 5.59 mm); graded AA, A, and B according to quality, but theactual quality depends on the manufacturer. 

Devices, fittings,or mechanisms for opening,closing,supporting,holding open,or locking the sashes,including such items as catches,chains,cords,fasteners,hinges,lifts,locks,pivots,pulls,pulleys,sash balances,sash weights,and stays.
 

The upper horizontal cross member of a window frame.

Same as builder’s jack.

A scaffold the platform of which is supported by a bracket or jack which projects through a window opening.

A slender bar or rod of lead,cast with grooves to receive the glass in a window.

Same as windowsill.

A handle,or the like,secured to a sliding sash (usually the lower rail) to assist in raising or lowering it.