Oak Floor 0 likes

A popular type of flooring, generally fitted with small tongue and groove oak strips

Oak Veneer 0 likes

A thin oak layer glued to another wood to produce a decorative facing; commonly seen as white oak and red oak

Oatmeal Paper 0 likes

Wallpaper created by scattering sawdust over a surface with glue on it

OB 0 likes

Octave Band

Obelisk1 like

A stone pillar, often a monument with a square base and oblique sides that taper like a pyramid to form a pointed top

Oblique 0 likes

An angle; not parallel or perpendicular; sloping

Oblique Slip Fault 0 likes

A combination of faults where the movement is diagonal along the fault plane dip

Obscure Glass1 like

Glass that transfers light but which can’t be seen through

Obsolescence 0 likes

Not useful any longer; out of date

Obtuse Angle 0 likes

Angle between 90 degrees and 180 degrees in size

Obtuse Triangle 0 likes

A triangle with one angle that is more than 90 degrees

OC 1 like

On center; describes the spacing of framing elements from the centers of adjacent members in a building; also seen as O/C

See Oxygen Cutting

Occupancy 0 likes

The rate of occupation of a place

Use of a building, such as a school, restaurant, residence or office

Occupancy Importance Factor (I) 0 likes

Building code terminology used to identify important occupancies

Occupational Safety & Health Administration (OSHA) 0 likes

U.S. Department of Labor/OSHA, 200 Constitution Avenue, NW, Washington DC, Tel: (202) 219-7725, URL: www.osha.gov

Ochre 0 likes

A reddish or yellowish earth pigment made from iron ore, employed in paint

Octyl Alcohol-Ethyl Hexanol 0 likes

Chemical in absorption machines that diminishes the absorber’s surface tension

Oculus 0 likes

A circular or eye-shaped opening in a dome

A round window

OD 0 likes

Outside Diameter

Odor 0 likes

A smell; may be pleasant or unpleasant

Off Cycle 0 likes

When a system is not functioning

Off-Site 0 likes

Anything not on the building or job site

Offer 0 likes

To try to provide something that may be accepted or refused

Offeror 0 likes

The person who makes an offer

Office 0 likes

A room or building in which professional or business activities take place

Office Building 0 likes

A building containing several business offices

Office Cubicle 0 likes

A compartment with fixed or movable walls which houses a person who works in an office

Office Park 0 likes

A prearranged group of office buildings with shared management, landscaping, parking, and other facilities

Office Partition1 like

Portable interior wall that separates an office area

Office Safe1 like

A strong container with a lock that secures money or valuables in an office; usually fire-resistant

Office Trailer 0 likes

A vehicle used to conduct business activities on a job site

Offset 0 likes

Sudden bend in a straight bar or pipe to avoid obstruction

Offset Cabinet Construction 0 likes

Constructing cabinets so the back corners of the doors and drawer fronts overlap the face frame and hide the joint

Offset Hinge1 like

A 90 degree offset hinge that moves the center of a door’s rotation

OG 0 likes

Ogee

Ogee 0 likes

A decorative curved section of a moulding, partially convex and partially concave, like an elongated flat S

Ogee Molding 0 likes

A molding with a modified flat S-shaped profile

Ogee Roof 0 likes

An architecturally designed roof inspired by Eastern culture

Ogive 0 likes

An arch with an apex

Ohm (R) 0 likes

Measures the resistance of an electrical current; occurring when a volt creates an ampere of current to flow

Ohmmeter1 like

This instrument calculates resistance measured in ohms

Ohms Law 0 likes

The electrical law that defines the ampere, voltage and resistance relationship; equation: Amperes (I) x Ohms (R) = Volts (V)

Oil Absorption 0 likes

The measure of the rate at which oil absorption occurs in pigments

Oil Base Caulking 0 likes

Distributed by tube, caulking is created from resins and oil substances

Oil Binding 0 likes

An occurrence caused by a layer of oil above a liquid refrigerant whereby the refrigerant is unable to evaporate at the usual pressure and temperature

Oil Burner Nozzle1 like

A device that sprays a mist of atomized fuel oil; the combustion properties of the fuel are enhanced

Oil Colors 0 likes

A paste derived from crushing colors in linseed oil

Oil Fired Boiler 0 likes

A vessel in which oil is heated and sent to a pressurized nozzle, from which it is then dispensed as a mist and lit via electric spark

Oil Furnace1 like

A furnace used to burn oil to produce heat

Oil Length 0 likes

A measurement used to grade varnish by oil length by calculating the gallons of oil present in 100 pounds of resin; short–oil varnish is weaker than long-oil varnish; a common long-oil varnish is spar varnish, while a common short–oil varnish is rubbing varnish

Oil of Vitriol 0 likes

See Sulphuric Acid

Oil Paint 0 likes

Paint comprised of oil that dries

Oil Separator1 like

Oil is removed from gaseous refrigerants with this device

Oil Soluble 0 likes

Ability to be dissolved when exposed to oil

Oil Stain 0 likes

A stain for wood which is comprised of dyes that are oil soluble and solvents like turpentine; will penetrate wood pores and may bleed

Oil Switch1 like

Typically fitted in a vent pipe, this switch or relay allows the burner to be turned off within a 45 second time period when a stack is unable to reach a fixed temperature following the start of the motor

Oil Tank 0 likes

The storage vessel in which heating oil is held for use in the future by a furnace system that burns oil or an oil burner

Oil Varnish 0 likes

A varnish created by the combination of hard resin, drying oil, and a drier that has been thinned with an unstable solvent; evaporation dries the solvent following application, then as a result of oxidation, the oil dries

Oil-Canning 0 likes

Deformation of metal panels made of thin-gauge which are attached to prevent normal thermal passage

Oil, Refrigeration 0 likes

See Refrigeration Oil

Oilcloth Varnish 0 likes

Varnish which is usually elastic and extremely flexible

Oilstone 0 likes

A piece of whetstone employed generally with oil

Oiticica Oil 0 likes

A drying oil extracted from the oiticica tree nut

Old English Bond 0 likes

See English Bond

Old Growth 0 likes

Timber obtained from a mature forest; the trees are grown mostly or completely alongside their counterparts; the wood is usually straight and untangled

Olefin 0 likes

A synthetic polymer which is long-chained made of minimum 85 percent by of propylene, ethylene or other olefin components by weight; polypropylene has been manufactured as fiber for carpets

Olefin Plastics 0 likes

Products of plastic nature based on resins produced from a high amount of olefins by weight; the most commonly found olefin plastics in pipe are polybutylene, polyethylene and polypropylene

Oleoresin 0 likes

A mixture of resin and an essential oil which comes from plants like softwoods

Oleoresinous Varnish 0 likes

A varnish made of resin or gum mixed in a drying oil that solidifies as it mixes with the oxygen in air

Olive Knuckle Hinge 0 likes

A hinge, paumelle in nature, with knuckles that produce an oval shape