Term Definition
TPI 1 like
Truss Plate Institute
Trace 1 like
A miniscule, barely noticeable, amount or residue of a substance
To define the periphery of an object
To reproduce a drawing by overlaying semi-transparent paper
Tracery1 like
Decorative stone trim work in the upper portion of a medieval window
A delicate decorative arrangement
Tracing 0 likes
A drawing produced on paper that is semi-transparent called tracing paper
Tracing Paper1 like
tracing paper
Transparent medium from which photosensitive copies can be made of an initial drawing
Track3 likes
A metal path acting as a template for a portable lighting fitting
Metal channel; see Runner
A deliberately laid out course or route, such as for racing
Track Lighting2 likes
track lighting
A construction with a U-shaped electrified component connected to a ceiling or wall, forming a pathway or conduit for sliding light fittings
Tract 0 likes
A delineated section of land
Traction 0 likes
Friction that allows the wheels of vehicles to stick to the road
Trade Discount 0 likes
A price reduction from a catalog that is passed on to the trade or bulk purchaser
Trade Union 1 like
A coordinated group of workers in a trade, group of trades, created to safeguard and advance their interests and rights
Traffic 0 likes
The passage of people or vehicles through a given area
Traffic Deck 1 like
A flat surface area on top of a roof covering to allow for pedestrians
Traffic Paint1 like
traffic paint
A paint, usually white, red or yellow in color, that is employed to indicate traffic lanes, designated safety areas, and intersections
Traffic Sign1 like
traffic sign
A visible instruction, warning, or directive for vehicle drivers or pedestrians
Trailer1 like
A vehicle made to be transported, or to act as a home or business platform
Trammel1 like
A beam compass
Trammel Bar 0 likes
A tile drafting tool used to construct straight lines and to bisect angles
Transducer2 likes
Instrument activated by change of power from one source with the aim of generating power in another form to another system
Transept 0 likes
A designated area in a cathedral or church that lies at right angles to the nave
Transfer Switch1 like
transfer switch
A switch in an electrical system that conveys the load to another circuit when the voltage falls below a predefined level
Transformer1 like
An instrument that conveys electrical energy for an alternating circuit to another with a change in current, voltage, phase or resistance
Transformer Pad1 like
transformer pad
A preformed concrete slab positioned beneath a transformer to disperse and sustain its weight
Transformer-Rectifier 0 likes
Blending of transformer and rectifier in which input a-c current may be altered and then restored into d-c current
Transistor1 like
An electronic device that converts or augments a current; a semiconductor instrument that consists of three attachments
Transit 0 likes
See Theodolite
Transit Mixed Concrete 0 likes
Concrete created from a localized batching factory, where the products are accurately mixed and placed truck mixers for combining while in transit or after arriving
Transition 0 likes
A movement or transformation from one place, form, or condition to another
The physical component required to stimulate a transformation
Transition Lot 0 likes
1.An area in a subdivision that is made up removed earth and repositioned earth
2.The juncture where the shape of the floor transitions from a shallow area to a deep area in a swimming pool
Transition Primer 0 likes
Covering that goes well with primer and a finish layer, although the finish coating is incompatible with the primer; also called Barrier Coating or Block Coating
Translate 2 likes
Movement of a body along a flat course without turning or rotating
Translucent 0 likes
Allowing the movement of light
Translucent Panel2 likes
translucent panel
A building strip or slat that allows the movement of light but not visibility
Transmission Factor 2 likes
See Transmittance
Transmission Jack1 like
3000 lb. 2-Stage Transmission Jack
A jack that is employed under vehicles on jack stands.
Transmission Loss (TL) 0 likes
Decrease of airborne sound produced by positioning a barricade, wall or material, between the resonating sound sphere of a point of origin and its receiver; a characteristic of the barricade
Transmittal 0 likes
A document, generally a cover sheet, employed to identify data being conveyed to a recipient
Transmittance 0 likes
The proportion of light conveyed through a material to the incident light falling on it; also called Transmission Factor or T
Transmitter1 like
The small, manually operated contraption that facilitates opening and closure of a garage door
Transom1 like
A crosswise component in a structure, lintel
A horizontal crosspiece of wood or stone in a window, above a door, or between a door and a window
A small rectangular window over a door
Transparent Mirror1 like
transparent mirror
A mirror with a transparent coating that permits vision from the area on the darker side to the area on the more illuminated side; from the brighter, more illuminated side, it reflects like a mirror; used in focus groups; also called One-Way Glass
Transudate 0 likes
A substance that has passed through a porous substance
Transude 0 likes
To move through a coating or porous substance; to leak or seep through
Transverse 0 likes
Perpendicular to the longest direction of a structural component; crosswise; otherwise known as lateral
Transverse Strength 1 like
A commonly used way of measuring the proportionate flexibility and firmness of gypsum board materials undertaken in line with ASTM C 473; defined or expressed as pounds force or Newtons
Trap1 like
A plumbing fixture that contains water to stop air, gas, and vermin in the sewer system from entering a room
Trap Seal 0 likes
A seal that stops gas from sewers passing into spaces and areas as well as collecting other debris
Trap Vents 0 likes
A vent for a plumbing fitting that protects against water leaking out of the trap and ensures sewage is conveyed on the sewer side of the trap
Trap, Float 1 like
See Float Trap
Trap, Grease1 like
grease trap
See Grease Trap
Trapdoor 1 like
An opening in a floor, ceiling, or roof
Trash Chute0 likes
trash chute
A device located on the inside of a building or positioned outside to facilitate easy removal of garbage from areas above the ground floor
Trash Compactor1 like
trash compactor
An apparatus that compacts refuse
Trash Handling 1 like
To convey or dispose of garbage
Travel Time 0 likes
Wages paid to workmen under specific union arrangements as well as remuneration to cover travel expenses to and from the workplace
Traveling Crane 1 like
A tower crane positioned on tires, crawlers, or rails
Traverse Rod1 like
traverse rod
An apparatus that curtains are hooked on enabling them to be opened or shut
Travertine 0 likes
A rich patterned, marble-like type of limestone
Travertine Floor1 like
travertine floor
A floor built of richly arranged, marble-like limestone
Tray, Cable1 like
cable tray
See Cable Tray
Tread 0 likes
The board or platform where pedestrians walk on a stairwell
Tread, Grating 1 like
See Grating Tread
Treated Lumber 0 likes
A timber product that has been permeated with pesticides to minimize destruction from wood rot or insects; frequently employed for the parts which interact with soil and water; lumber may also be coated with a substance to inhibit the impact of fire
Tree Ball 0 likes
See Root Ball
Tree Cutting 1 like
The cutting back of leaves, branches or larger parts of a tree, or the cutting down of a tree
Tree Maintenance 0 likes
Tidying up or cutting of particular parts of a tree in order to improve its appearance or for practical reasons such as making room for pathways
Tree Moving 0 likes
The removal of a tree so that its root system remains, in order to place it in another setting
Tree Removal 1 like
The cutting down, removal or discarding of a tree or parts of the tree
Tree Trimming 0 likes
The slight cutting of branches, leaves or other parts of a tree for practical purposes or aesthetics
Tree Well 0 likes
A place to plant one or more trees
Treenail 0 likes
A pin, peg, or spike made of wood used primarily for affixing planking and ceiling to a frame
Trefoil 0 likes
A three pointed feature in Gothic design
Trellis2 likes
A lightweight lattice or mesh on which trees or shrubs are assisted to grow
Trench 0 likes
A long thin pit or trench; a ditch
Trench Frame and Cover, Cast Iron 1 like
Framework and coating of cast iron parts to cover the indented lineal element used to gather water from the surface and convey to pipe or pit for removal
Trencher1 like
A mechanical instrument that digs thin pits or ditches in the ground
Trenching 0 likes
Excavating narrow pathways or conduits in the earth
Trespass 0 likes
To enter someone’s property in defiance of his or her order or instruction not to do so
Trestle1 like
A reinforced framework bridges that supports a railroad track
A table frame that has a flat segment upheld by a pair of divergent legs
Trial 0 likes
A session orchestrated by a judge where various parties are allowed to bring in evidence and assertions supporting, and in defense of claims
Trial Batch 0 likes
Concrete created to test ratios of the various ingredients
Triangle1 like
A three sided shape; a polygon with three sides
A plastic drafting tool, transparent and triangular, generally 45 degrees, 30-60 degrees, or flexible
Tribology 1 like
The science relating friction, abrasiveness, and moisturizing surfaces that interact with each other
Trigonometry 0 likes
The branch of mathematics that explores the sides and angles of triangles
Trilinear 1 like
Associated or having to do with three lines
Trim 0 likes
The jobs that the mechanical builders undertake to complete the various requirements of their work, when the home is approaching completion and occupancy
Trimmer 0 likes
The vertical stud that fortifies a header at a door, window, or another aperture
Trimmer Arch 0 likes
An arch, generally made of bricks low in height in order to support the fireplace hearth
Trimming 0 likes
Placing the internal and external finish and hardware on a construction
Triple Glazing 0 likes
Three sheets of glass separated by pockets of air; triple glass
Triple Oven 1 like
A mechanical cooking apparatus that consists of three distinct areas with doors
Triple Point 0 likes
The temperature and pressure where the gaseous, liquid, and solid states of a substance can coexist in balance
Triplex 0 likes
A house containing three families
A Triplex Apartment
Triplex Apartment 1 like
A residence that contains living spaces on three levels
Tripod1 like
An apparatus consisting of three legs that supports objects such as a camera
Tripoli 0 likes
See Rottenstone
Triptych1 like
A picture or engraving arranged in three panels
Trisect 0 likes
To split into three components
To arrange into three identical parts
Trisodium Phosphate (TSP) 1 like
A translucent mixture that serves as the base for cleaning compounds; particularly effective for washing walls before repainting
Troffer 0 likes
A channel space for sources of light
Trombe Wall 0 likes
A stonework wall, generally glazed on the exterior, used to capture the sun’s heat as a component of a solar heating system
Troposphere 0 likes
Section of the atmosphere directly above the earth’s surface that is the source of many weather upheavals
Troughing 0 likes
Recurring dozer pushes in one track, such that elevated sections of spilled substance retain dirt in front of the blade
Trowel1 like
A manual implement used by masons and plasterers to administer, disseminate, form and even out plastic substances including plaster and mortar
Trowel Finish 0 likes
The polished finished surface of concrete, plaster, or stucco created by troweling
Trowelling 0 likes
Administering, disseminating, or evening out plastic products such as mortar, plaster, or concrete using a manually operated trowel
Truck 0 likes
A vehicle with wheels that is used to transport or convey heavy materials
A tough, sturdy automotive vehicle used to transport materials
Truck Crane1 like
truck crane
A mechanical device installed on a truck to lift and manoeuver materials
Truck Mixer 0 likes
A concrete mixer with the ability to mix concrete en route when positioned on the frame or undercarriage of a truck
Truck Shelter1 like
truck shelter
A designated area or building that allows motorized trucks to be parked
Truck, Refrigerated 1 like
See Refrigerated Truck
True Complement Color Harmony 0 likes
Two colors opposite each other on the color wheel; such as red and green, and blue and orange
Truncate 0 likes
To make shorter by removing the top of an object
Truss 0 likes
A fabricated roof structure with zigzag framing beams; performs the same function as a rafter but is sturdier than a rafter
Truss Panel 0 likes
A portion of chord between two consecutive joints of a truss
Truss Plate Institute (TPI) 0 likes
218 North Lee Street, Suite 312, Alexandria, VA 22314 Tel: (703) 683-1010, URL: www.tpinst.org
Truss Reinforcing 0 likes
Cross beams or other bracing structures that are added to reinforce a framework of trusses
Truss Steel1 like
truss steel

Steel framework made of triangular shaped components used to uphold loads over great distances

Truss, Wood 0 likes
See Wood Truss
Trussed Bars 0 likes
Steel bars bent into a position such to fortify the top and base
Trust Deed 1 like
A document that records a security interest in real property; employed in some states instead of a mortgage
Trustee 0 likes
Someone responsible for monitoring the management of property owned by a trust; the lender in a trust deed
Trustor 0 likes
Someone who sets up a trust or grants money as surety for such things as loans; the entity that has provided property to guarantee repayment of the loan in a trust deed
TSG 1 like
Tapered Steel Girder
TSI 0 likes
Thermal System Insulation
TSP 1 like
Trisodium Phosphate
Tsunami 1 like
A sea wave created by a massive upheaval of the ocean bottom, as a consequence of seismic shifts
Tub Enclosure 0 likes
A designated area of glass or plastic fixed on a bathtub rim with sliding, folding, or opening door panels to prevent water from escaping
Tub Trap 0 likes
U-shaped component of a bath tub drain pipe that contains a water seal to stop sewer gasses from coming into the home
Tub, Bath1 like
tub, bath
A basin with water supply and drainage that is mainly used for bathing
Tube 0 likes
A conduit that facilitates the movement of liquids
A weight-bearing structure in the shape of a square or round pipe
A tunnel
Television Tube
Electron tube
Vacuum tube
Tube, Structural 1 like
See Structural Tube
Tubing1 like
Narrow-walled pipe that is easily bent
Tubular 0 likes
Pipe or tube that is polygonal or circular
Tubular Lock1 like
tubular lock
See Cylindrical Lock
Tuck Pointing 1 like
The removal of degraded mortar from the surface of a brick wall, and replacing it with fresh mortar
Tufted Carpet1 like
tufted carpet
Carpet formed by placing the pile yarns inside a pre-woven material backing on a machine with numerous needles, like a massive sewing machine
Tufts 0 likes
The cut pieces of a carpet fabric; applicable for woven and tufted carpets
Tumbler 0 likes
A locking device that retains a bolt until a key disengages it
Tumbler Switch1 like
tumbler switch
A levered switch driven by an electric current
Tumblestone Aggregate 2 likes
A random assembly of aggregate
Tumbling 1 like
A means of finishing with a tumbling barrel; products are placed into barrel which is turned
Tung Oil1 like
tung oil
A yellow drying oil often used in water-resistant varnishes, lacquers, and high-gloss paints
Tungsten 0 likes
A dense, high-melting point metal, grey-white in color, flexible; employed in electric light filaments
Tungsten Steel
Tunnel 0 likes
A passageway through or beneath an obstruction; otherwise known as Wolfram
Turbidity 0 likes
The extent to which pool water is muddied by particles
Turf 0 likes
The superficial or outer layer of grassland consisting of grass, roots and soil
Turn Piece 0 likes
A small knob or lever with a connecting pivot used to operate the deadbolt of a lock
Turnbuckle1 like
A mechanized instrument used to tighten tie rods by rotating a link that is threaded
Turner 0 likes
The operator of a lathe
Turning Vanes 1 like
Narrow curved blades positioned at bends in air ducts to coordinate the flow of air with a small amount of eddying and pressure loss
Turnkey 0 likes
A condition where the subcontractor contributes all of the resources including physical labor for a job
Turnout 0 likes
A broadened area in a highway where vehicles can overtake each other or stop
A point at which a train can travel via a range of routes
Turnstile 0 likes
A gate with rotating arms through which people pass in single file
Turntable 0 likes
A rotating structure that allows modes of transportation such as trains, trucks, bus, or automobile to turn
A rotating tray built into a side cabinet
Turpentine1 like
Colorless petroleum based flammable oil, employed as a paint thinner or a varnish solvent
Turps 0 likes
Turret 0 likes
A small tower, frequently protruding from the wall of a building as a decoration
Turtleback 1 like
See Blistering
Tuscan Red 0 likes
A red pigment
TV1 like
TVOC 0 likes
Total Volatile Organic Compound
TWA 1 like
Time-Weighted Average
Twist 0 likes
A deformation created when the sides of a board are turned so that the four corners of any side are no longer in the original arrangement
Two Coat Work 0 likes
See Double-Up
Two-Coat System 0 likes
A dual coat of paint undertaken as the initial stage of painting
Two-Component Gun 0 likes
Composed of two distinct fluid suppliers to a spray head; designed to spray a coating and a catalyst at the same time
Two-Family Dwelling 0 likes
A building that has two dwellings
Two-Temperature Valve 1 like
A valve that opens under pressure, employed in suction line on numerous refrigerator installations to sustain evaporation at diverse temperatures
Two-Way 0 likes
Structure with steel fortification spanning in two perpendicular positions
Two-Way Action 0 likes
Arching of a slab or deck where the bending stresses induced are equivalent in the two primary directions of the structure
Two-Way Concrete Joist System 1 like
A strengthened concrete framing unit in which pylons directly reinforce a grid of interconnecting beams
Two-Way Flat Plate 0 likes
A fortified concrete framing unit in which pylons directly uphold a two-way block that is even on both sides
Two-Way Flat Slab 0 likes
A stabilized concrete framing apparatus in which pylons with flaring heads and/or drop panels directly uphold a two-way block that is even on both sides
Two-Way Valve1 like
two-way valve
Valve with an incoming and an outgoing port
Tympanum 0 likes
Recessed triangular space located between the top of a door and the arch above it
Typ 0 likes
Type X Gypsum Board 0 likes
A gypsumboard employed where a higher level of protection against fire is needed
Type X Lath 0 likes
See Gypsum Lath
Typical 0 likes
Displaying the critical features of a collection; a sample
Product of the day


Detergent, alkali, acid, or another cleaning substance Solvent for cleaning paint equipment



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