Term Definition
Board1 like
Flat thin piece of sawn lumber, usually long, narrow and less than 2 inches thick
Flat panel of compressed fibers
Group of people having supervisory, investigatory, or advisory powers
Sheet of insulating material with circuit elements and terminals that can be inserted in an electronic apparatus
Board and Batten 0 likes
Linear vertical wood boards with wood strips covering vertical joints employed as an exterior cladding for a framed wall
Board Cement 0 likes
Adhesive that bond pieces of wood
Board Foot 2 likes
Unit of lumber volume, a rectangular solid nominally 12 inches x 12 inches x 1 inches; 2 inches x 12 inches x 16 feet = 32 board feet
Board Insulation1 like
board insulation
Rigid form of plastic foam employed as a rigid application insulating surface, usually of polyurethane.
Board Knife2 likes
board knife
Hand tool, such as a Stanley knife, with a disposable blade to sharply score or trim gypsum board products
Board Measure 0 likes
Standard system for measuring lumber; see Board Foot
Board Rafter 0 likes
Wood structural part of the sloping parallel beams used to support a roof
Board Saw1 like
board saw
Short hand saw with rough teeth for cutting gypsum board for door and window frame openings
Board Siding 0 likes
Lumber installed on the exterior walls of a structure employed as the finish sheathing
Board Sub-Flooring 0 likes
Wooden positioned on floor joists where the finished floor is fastened
Board, Composite 0 likes
Board consisting of several compressed materials used for wallboard, sheathing, insulation or an acoustical barrier
Board, Concrete Finish 0 likes
Wood boards placed in the concrete formwork that provide a woodpattern finish to the finished reinforced concrete
Board, Diving1 like
board, diving
A raised narrow platform, often with a sprig at the edge of a swimming pool, extending over the water
Board, Dock 0 likes
Heavy timber in the raised platform used for the loading and unloading of trucks
Board, Ridge 0 likes
Board against which the tips of rafters are secured; the top line of a roof; the ridge
Boarding In 0 likes
Process of nailing boards on the external studding of a home
Boatswain Chair1 like
boatswain chair
Trapeze-like seat slung from rigging to support a worker; a Bosuns Chair
BOCA 0 likes
Building Officials and Code Administrators International, an organization that publishes model building codes
Bodega 0 likes
Wine vault or cellar; a wine shop where wine is drawn from barrels
Bodied Linseed Oil 0 likes
Thickened linseed oil; some are just a little thicker than raw linseed oil; others are almost jelly like
Body 0 likes
Structural portion of ceramic articles or structural portion of an article covered with ceramic tile
Thickness, consistency, or viscosity of a fluid
See Steel Square
Body Coat 0 likes
Intermediate coat of paint between prime and finished coat
Body Feed 0 likes
Continuous inclusion of small amounts of filter aid during the operating of a diatomaceous earth filter
Boiled Linseed Oil 0 likes
Linseed oil that hardens more rapidly when spread in thin coatings
Boiled Oil 0 likes
Drying oil treated with driers to shorten the drying period
Boiler 0 likes
Fuel-burning apparatus that produces hot water or steam
Heating system where water is employed as the distribution medium
Boiler Bow Off 0 likes
Outlet on a boiler to allow emptying or discharging of materials in the boiler
Boiler Horsepower 0 likes
Heating capacity of 33,475 Btu/hour (983 watts)
Boiler Plate 0 likes
Standardized or hackneyed language in a contract
Boiler Room 0 likes
Area for a hot water or steam boiler, circulating pumps, and other equipment; engine room
Boiler, High-Pressure 0 likes
Boiler producing steam at pressures of 15 pounds per square inch gauge or higher
Boiler, Hot-Water and Low-Pressure Steam 0 likes
Boiler producing hot water at pressures no greater than 30 pounds per square inch gauge or steam at pressures no greater than 15 pounds per square inch gauge
Boiling Point 1 like
Temperature at which liquid boils, or when a liquid begins transform to gas; water boils at 100° C or 212° F
Boiling Temperature 0 likes
Boiling point; temperature at which a liquid changes to a gas
Bole 0 likes
Fine soft clay, yellow or dark, used as a pigment
Bollard Pipe1 like
bollard pipe
Short steel post, usually filled with concrete to prevent vehicular access or to protect property from damage
Steel or cast iron post where ships are tied
Bolster 1 like
Short length of timber mounted horizontally across the top of a post to produce a greater bearing surface for a girder or girders, or to allow a post above to set between the ends of the girders, or to shorten the span of girders
Long wire chair that supports steel reinforcing bars in a concrete slab while the concrete is being positioned
Bolster, Slab 0 likes
Continuous, individual support that secures steel reinforcing bars in the right position
Bolt2 likes
Threaded metal rod or pin for joining part used with a threaded nut
Sliding bar used to lock a door or gate
A bar in a lock that is moved by a key
Bolt Cutter1 like
bolt cutter
Hand tool using leverage that shears bolts and steel reinforcing rods
Bolt, Anchor 0 likes
Steel bolt that secures wood construction to concrete or masonry
Bolt, Carriage0 likes
bolt, carriage
Threaded bolt with a rounded smooth head and a square neck under the head to stop rotation
Bolt, Dead1 like
dead bolt
Lock bolt without spring action or bevel, operated by a key or a turn piece
Bolt, Door1 like
bolt door
Tongue of a lock to stop a door from opening
Bolt, Wood 0 likes
Bolts specifically used in wood applications that sink into the wood to stop turning
Bolted Steel 0 likes
Steel structural system where the parts are combined and connected with bolts
Bolted Truss 0 likes
Beams, frames, trusses, or other supports connected to secure a roof, bridge, or floor system, fastened with bolts
Bolting Pattern 0 likes
Arrangement, spacings, and dimensions of bolts used to attach two or more structural parts
Bond Beam 0 likes
Horizontal reinforced masonry beam serving as an integral part of the wall
Bond Breaker 1 like
Material that prevents adhesion of newly positioned concrete to other surfaces
Bond Coat 0 likes
Material between the back of the tile and the prepared surface such as pure portland cement, dry-set portland cement mortar, latex-type portland cement mortar or organic adhesive
Bond or Bonding 0 likes
Money deposited with a governmental agency to secure a contractor‘s license; may be used to pay for unpaid bills or disputed work of the contractor; rarely employed in residential construction, the bond serves as an insurance policy to guarantee satisfactory completion of a project; See Bid Bond; Contract Bond; Contract Payment Bond; Contract Performance Bond; Labor and Material Payment Bond; Performance Bond; Subcontractor Bond; surety
Bond Plaster 1 like
Formulated gypsum plaster used a first coat application over monolithic concrete
Bondability 0 likes
Ease or difficulty in bonding a material with adhesive
Ease or difficulty of a contractor in obtaining a surety bond
Bonded Stop Notice 0 likes
Stop notice with a surety bond that guarantees any costs assessed against the claimant if the claimant loses its lawsuit; see Stop Notice
Bonded Tendon 0 likes
Pre-stressed tendon bonded to concrete directly or through grouting.
Bonder 0 likes
Bonding unit
Bonderized Flagpole 0 likes
Metal flagpole for protection against the elements
Bonderizing 0 likes
Five-step proprietary custom process for phosphatizing
Bonding 0 likes
Bonding Agent2 likes
bonding agent
Substance that creates a bond between it and the next layer between a subsurface and a terrazzo topping or a next plaster application
Bonding Company 0 likes
Licensed firm willing to execute a surety bond(s) payable to the owner, securing the performance on a contract either in whole or partially; or securing payment for labor and materials
Bonding Jumper 0 likes
Reliable conductor ensuring the necessary electrical conductivity between metal parts that will be electrically connected
Connection between the grounded circuit conductor and the equipment grounding conductor
Connection between two or more portions of the equipment grounding conductor
Connection between parts of a conductor in a circuit to maintain required amps of the circuit.
Bonnet 0 likes
Upper part of the gate valve body in which the disc of a gate valve rises when opened
Bonus 1 like
Extra payment to a contractor for achieving a specific objective
Book Matched 0 likes
Wood veneer where the grain matches like an open book
Boom 0 likes
A long beam extending out to lift or carry an object and guide it; a derrick boom
A barrier across a river or around an area of water to stop floating logs from dispersing or to contain an oil spill
Truck used to lift heavy material into place
Booster 0 likes
Compressor used as the first stage in the cascade refrigerating system
Booth 0 likes
Small temporary structure used as a market stall
Small enclosure used for purposes such as for telephoning or voting
Table and benches in a restaurant or bar
Booth, Spray 0 likes
Area in a building utilized for spray painting; blocked off by walls to stop dust and dirt from work surface
Border 1 like
Edge or boundary
Bore 0 likes
Drill a hole
Diameter of a tube
Internal diameter of a motor cylinder
Bored Lock 0 likes
Door lock inserted in a circular hole.
Boring 0 likes
Creating holes in wood or metal to insert bolts, nails and other fasteners
Rotary drilling
Drilling into the ground to draw samples of earth for testing
Boring Bar Head 1 like
The head of a tool used in metalwork and woodwork.
Borrow Pit 0 likes
Area specified as the source of earth removal used somewhere else for fill
Borrowed Light Opening 0 likes
Glazed window unit in an interior partition
Boss 1 like
Round knob, stud, or other protrusion on the center of a shield or ornament
Ornamental carving enveloping the juncture of the ribs in a vault and the ceiling
Boston Ridge 0 likes
Creating a finish of asphalt or wood shingles at the ridge or at the hips of a roof
Bosuns Chair1 like
bosuns chair
See Boatswains Chair
Bottom Bars 0 likes
Reinforcing bars positioned close to the bottom of a reinforced concrete beam or slab
Bottom Beam 0 likes
Lowest horizontal part securing a building
Bottom Chord 0 likes
Lower or bottom horizontal part of a truss
Bottom Dip 0 likes
Deepest water or waste point in a trap
Bottom Pivot Hinge 0 likes
Flexible pair of plates secured with a pin to permit swinging of a door installed at the bottom
Bottom Plate 0 likes
Bottom continuous horizontal part supporting the studs in wood stud framing construction; also called the sole plate
Boulder 0 likes
Large stone worn smooth by erosion; a rock which is too heavy to be lifted easily
Bounce-Back 0 likes
Spray back similar to blowback
Boundary 0 likes
Separating line that defines a limit
Boundary Elements 0 likes
Parts along wall and diaphragm edges fortified by longitudinal and transverse reinforcement
Boundary Survey 0 likes
Survey of the property lines of a land lot
Bourdon Tube 1 like
Thin-walled circular flat tube of elastic metal used in pressure gauges
Bow 0 likes
Distortion of lumber perpendicular to the flat face from a straight line from end-to-end of the piece
Bow Trowel 0 likes
Finishing trowel used for the final application of gypsum board joint treatment
Bow Window 0 likes
Bay window with a curved front
Bowl, Toilet1 like
bowl toilet
Oval part of a toilet that receives the waste and fills with water after flushing the toilet tank
Box Beam 0 likes
Beam which in cross section has the appearance of a closed rectangular box
Box Culvert 0 likes
Concrete rectangular reinforced drainage structure cast in place or made of precast sections
Box Culvert Formwork 0 likes
Temporary wood structure that secures wet concrete for the final curing of a rectangular-shaped, reinforced concrete drainage system
Box Culvert Reinforcing 0 likes
Iron or steel rods embedded in the wet concrete of a rectangular-shaped drainage system as reinforcement
Box Cutter1 like
box cutter
Hand tool that cuts electrical outlet holes in gypsum board
Box System 0 likes
Framing system that consists of bearing walls with lateral forces resisted by shear walls and diaphragms
Box Wrench1 like
box wrench
End wrench where the gripping end encircles the nut or bolt head
Box, Distribution 0 likes
Box that contains circuit breakers, connects to the service wires, and distributes current to the outlets in a building
Box, Gang1 like
box, gang
Electrical rough-in that provides for two or more outlets or switches
Box, Junction1 like
box junction
Metal or hard plastic electrical rough-in box containing wire or cable connections
Box, Plastic 0 likes
Plastic electrical box that joins electrical wires nailed in place
Box, Screw Cover1 like
box, screw cover
Removable ornamental or protective plate installed on an electrical rough-in box
Box, Tap 0 likes
Electrical box where the public service electrical supply line is connected with a branch to serve a building
Box, Terminal1 like
box, terminal
Metal electrical box with a removable cover that contains leads from electrical equipment to connect to a power source
Box, Weatherproof1 like
box, weatherproof
An electrical box for exterior installation that is impermeable to outside elements
Boxing 0 likes
Mixing by pouring back and forth from one container to another
Boyles Law 0 likes
Physical law asserting that the volume of a gas is directly proportional to its temperature and inversely proportional to its pressure
Product of the day

How to Fix Plumbing Noises In Your Home

plumbing fiberglass insulationTo diagnose loud plumbing, you must first determine whether the unwanted sounds occur on the system's inlet side - in other words, when water is turned on - or on the drain side. Noises on the inlet side have various causes: excessive water pressure, worn valve and faucet parts, poorly connected pumps or other appliances, incorrectly placed pipe fasteners, and plumbing runs with excessive tight bends or other restrictions. Noises on the drain side usually originate from poor location or, as with some inlet side noise, a layout with tight bends.


Hissing that occurs when a faucet is opened slightly generally signals excessive water pressure. Consult your local water company if you suspect this problem. They will tell you about the water pressure in your area and if necessary, can install a pressure reducing valve on the incoming water supply pipe.


Thudding, often accompanied by shuddering pipes when a faucet or appliance valve is turned off, is a condition called water hammer. The noise and vibration are caused by the reverberating wave of pressure in the water, which suddenly has no place to go. Sometimes opening a valve that discharges water quickly into a section of piping with a restriction, elbow, or tee fitting can produce the same condition. Water hammer can usually be fixed by installing fittings called air chambers or shock absorbers in the plumbing to which the problem valves or faucets are connected. These devices permit the shock wave produced by the halted flow of water to dissipate in the air, which unlike water, is compressible. Older plumbing systems may have short vertical sections of capped pipe behind walls on faucet runs for the same purpose; these can eventually fill with water, reducing or destroying their effectiveness. The solution is to drain the water system by turning off the main water supply valve and opening all faucets. Then open the main supply valve and close the faucets one at a time, starting with the faucet closest to the valve and ending with the one furthest away.

Chattering or Screeching

Intense chattering or screeching that occurs when a valve or faucet is turned on, and that usually disappears when the fitting is fully open, signals loose or defective internal parts. The solution is to replace the valve or faucet with a new one. Pumps and appliances such as washing machines and dishwashers can transfer motor noise to pipes if they are improperly connected. Link these items to plumbing with plastic or rubber hoses - never rigid pipe - to separate them.

Other Inlet Side Noises

Creaking, squeaking, scratching, snapping, and tapping are usually caused by the expansion or contraction of pipes, generally copper ones supplying hot water. The sounds occur as the pipes slide against loose fasteners or strike nearby house framing. You can often pinpoint the location of the problem if the pipes are exposed; just follow the sound when the pipes are making noise. Most likely, you will discover a loose pipe hanger or an area where pipes lie so close to floor joists or other framing pieces that they clatter against them. Attaching foam pipe insulation around the pipes at the point of contact should resolve the problem. Be sure straps and hangers are secure and provide sufficient support. Where possible, pipe fasteners should be connected to large structural elements such as foundation walls instead of framing; doing this reduces the transmission of vibrations from plumbing to surfaces that can amplify and transfer them. If attaching fasteners to framing is unavoidable, wrap pipes with insulation or other resilient material where they contact fasteners, and sandwich the ends of new fasteners between rubber washers when installing them. Correcting plumbing runs that suffer from flow-restricting tight or numerous bends is a last resort that should be performed only after consulting a skilled plumbing contractor. Unfortunately, this situation is common in older homes that may not have been built with indoor plumbing or that have been through several remodels, particularly by unprofessional contractors.

Drainpipe Noise

On the drain side of plumbing, the main goals are to eradicate surfaces that can be struck by falling or rushing water and to insulate pipes to contain unavoidable sounds. In new construction, bathtubs, shower stalls, toilets, and wall-mounted sinks and basins should be set on or against resilient under-layments to lower the transmission of sound through them. Water-saving toilets and faucets are less noisy than conventional models; install them instead of older types even if codes in your area still allow older fixtures. Drainpipes that do not run vertically to the basement or that branch into horizontal pipe runs supported at floor joists or other framing present especially troubling noise problems. These pipes are large enough to radiate substantial vibration; they also carry significant amounts of water, which makes the situation worse. In new construction, use cast-iron soil pipes (the large pipes that drain toilets) if you can afford them. Their immense size contains much of the noise made by water traversing them. Also, avoid routing drainpipes in walls shared with bedrooms and rooms where people gather. Walls containing drainpipes should be soundproofed as stated earlier, using double panels of sound-insulating fiberboard and wallboard. Pipes can be wrapped with special fiberglass insulation made for the purpose; these pipes have an impervious vinyl skin that sometimes containing lead. Results are not always acceptable.

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