Term Definition
Machine Room 1 like
Room which houses commercial and industrial refrigeration machinery (except the evaporators)
Macrozones 1 like
Sizeable zones of earthquake activity defined by the Uniform Building Code Map
Madder 1 like
Coloring matter originally derived from a pulverized plant root, now mostly produced synthetically
Magnesium Silicate 0 likes
White extender pigment which adds fluffiness to substances; provides very slight opacity
Magnet4 likes
A solid body that can attract iron and create a magnetic field outside itself
Magnetic 2 likes
Having the characteristics of a magnet
Magnetic Catch3 likes
magnetic catch
A cabinet catch that employs a magnet to keep the door closed
Magnetic Clutch 3 likes
Apparatus controlled by magnetism that connects and disconnects a power drive
Magnetic Compass1 like
magnetic compass
An instrument that displays magnetic north direction and compass bearings
Magnetic Core 2 likes
Magnetic field center
Magnetic Door Holder4 likes
magnetic door holder
A door holder that employs a magnet to maintain it in an open position
Magnetic Field 0 likes
Area of variable force around magnets, magnetic substances, or current-carrying conductors
Magnetic Gasket 1 like
Door-sealing material that maintains a tightly closed door using small magnets in a gasket
Magnetic Hammer1 like
magnetic hammer
A special hammer magnetically sensitized to grip a metal fastener
Magnetic Pole 0 likes
Either of the north or south poles of a magnet
Magnetic Starter2 likes
magnetic starter
Automatic protective equipment operated by an electromagnet that insures a motor does not receive too much current during start up
Magnetism 1 like
A field of force by which a magnet attracts iron, nickel-cobalt or other ferrous materials
Magnetite 2 likes
An aggregate made up mainly of ferrous metaferrite, a black magnetic iron ore, used in heavyweight concrete
Magnetron1 like
A diode vacuum tube where the electron flow is controlled by an external magnetic field to generate power at microwave frequencies; the active element of a microwave oven
Magnification Factor 1 like
Intensification of lateral forces at a particular site for a specific factor or set of conditions
Magnitude 2 likes
Measurement of the size of an earthquake in terms of the quantity of energy released
Mahogany Veneer4 likes
mahogany veneer
Thin layer of straight-grained mid-density wood for exterior decorative purposes
MAI 0 likes
Member of the Appraisal Institute; a professional description of a licensed real estate appraiser
Mail Chute2 likes
mail chute
Inclined or vertical hollow channel through which mail travels
Main 0 likes
The chief pipe, duct, or cable in an electrical, gas, water, sewer or other utility system
Main Breaker1 like
main breaker
A switch which operates the service wires in the main electrical service panel
Primary protective electrical service apparatus where power enters a building
Main Drain 0 likes
See Main Outlet
Main Outlet 0 likes
Outlet fitting at the bottom of a swimming pool, hot tub or spa through which water passes to the recirculating pump; also called Main Drain or Sump Pot
Main Runners 0 likes
The heaviest supporting components of a suspended ceiling; primary runners are reinforced by hangers secured to the building structure which support furring channels or rods to which lath is attached
Main Switch1 like
main switch
See Service Disconnect
Maintenance 1 like
Organized preservation of property or equipment
Maintenance Equipment 2 likes
Tools to preserve and clean property or equipment
Maintenance Painting 1 like
Repair painting; any painting done after the first paint job
All painting except the painting completed for aesthetic purposes
Maisonette 2 likes
A small house
An apartment with two floors
Maisoning 0 likes
Process of planning, keying and master keying a building; particularly multifaceted hotel and office building systems
Majolica 0 likes
Decorated earthenware with an opaque glaze
Make-Up Air 1 like
Fresh air brought entering a building through the ventilation system
Make-Up Water 0 likes
Fresh water employed to fill or refill a swimming pool
Male 1 like
A part designed to fit into female part; external threads are male
Male Thread1 like
male thread
External threads on a pipe or fitting
Malice 0 likes
Conscious desire to do harm
Malicious Prosecution 1 like
Pursuing a lawsuit with intent to do harm without probable cause
Mall 1 like
An enclosed walk or promenade
A shopping area grouped around a common pedestrian area serving the general public
Malleable 0 likes
When metals can be formed into new shapes by hammering and bending
Malleable Iron 2 likes
Iron that can be hammered or bent into a new shape without breaking
Malleable Strap 0 likes
A metal fastening plate that can be hammered or bent into a new shape without breaking
Mallet1 like
A hammer with a wood head
Malpractice 0 likes
Negligent action or omission by a professional
Malpractice Insurance 1 like
See Errors and Omissions Insurance
Managerial Competence 0 likes
Capable of fulfilling the responsibilities and functions associated with management such as planning, control, communication, and cooperation
Mandrel3 likes
A metal bar serving as the center around which material is cast, molded, bent, forged, or formed differently
The shaft and bearings on which a tool is installed, such as with a drill or circular saw
Mandrel Test 0 likes
A physical bending test for bonding and flexibility
Manganese 1 like
Grey-white, tough, brittle, metallic element similar to iron but not magnetic
Mineral that is in the clay employed in brickmaking
Manhole 1 like
A hole where a person may pass to access an underground or enclosed structure
Manhole Base 1 like
Cast iron frame which fits a manhole cover
Manhole Cover 0 likes
A heavy steel or iron cover employed to access underground work via a manhole
Manhole Removal 2 likes
Excavating a manhole and removing it
Manhole, Communication 0 likes
See Communication Manhole
Manhole, Electric 1 like
See Electric Manhole
Manhole, Watertight 1 like
See Watertight Manhole
Manifold 1 like
A pipe fitting with many lateral outlets to join a pipe with other pipes
Manifold Gauge1 like
manifold gauge
Chamber device made to hold compound and high-pressure gauges; valves control fluid flow through it
Manifold, Service 0 likes
See Service Manifold
Manila Paper1 like
manila paper
See Cream Paper
Manila Resins 1 like
Alcohol soluble natural resin
Manometer1 like
Pressure gauge for gases and liquids
Manor 0 likes
The house of a landed estate
Mansard Roof 0 likes
A hip roof with four sloping sides, each becoming steeper part of the way down
Mansion 2 likes
A large impressive residence
Mantel 0 likes
Protruding shelf above a fireplace opening; also can be a decorative trim around a fireplace opening
Mantle 3 likes
The main part of the earth that lies between the crust and the core
Manual 0 likes
Achieved by way of the hands
A book of instructions for operating a machine, or carrying out a procedure
Manual Frost Control 0 likes
Manual control that produces defrosting in a refrigerating system
Manual Proportioning Control 1 like
Control system where proportions of aggregate and asphalt are controlled by gates or valves manually in an asphalt batching plant; the system may also include power assist apparatus to open and close the gate and valves
Manufactory 0 likes
A factory
Manufacture 0 likes
Producing items usually in a factory for industrial purposes
Manufactured Roof 0 likes
Factory-produced roof system
Manufactured Wall 0 likes
Factory-produced wall system
Manufactured Wood 0 likes
Wood item such as a gluelam, truss, joist, or a beam made from smaller wood pieces and glued or mechanically secured to create a larger product; often used to create a sturdier part that uses less wood. See also Oriented Strand Board
Manufacturer’s Specifications 0 likes
Written instructions from the manufacturer which may need to be implemented to maintain the warrantee of an item
Manufacturer’s Bond 2 likes
Surety company’s guarantee that it will honor a manufacturer’s liability to finance repairs created by ordinary wear generally limited to 5, 10, 15 or 20 years
Map2 likes
Two-dimensional visual representation of all or a part of the earth’s surface
Maple Flooring Manufacturers Association (MFMA) 0 likes
11 Deer Lake Road, Suite 100, Deerfield, Illinois 60015, Tel: (888) 480-9138, URL: www.maplefloor.org
Mar 0 likes
To disfigure, spoil or detract from something
Marble1 like
Granular to compact crystallized limestone that can take a high polish, employed in architecture and sculpture
Marble Chips1 like
marble chips
Maximally hard graded collective produced from crushed marble thrown or blown onto a soft plaster bedding coat to create marblecrete
Marble Flooring 1 like
A floor finished with marble
Marble Mosaic Tile2 likes
marble mosaic tile
Tile consisting of small varying marble pieces that generally about ½ inch square
Marble Paver 0 likes
Hard, tough igneous stone employed on driveways and patios with or without mortar
Marble Tiles1 like
marble tiles
Marble tile 12 inch square or less, generally ½ inch to ¾ inches thick, offered in various finishes such as polished, split-faced or honed
Marble, Imported1 like
marble imported
See Imported Marble
Marblecrete 0 likes
Marble chip embedded finish for plaster
Marbleizing 1 like
See Faux Marble
Marblite 0 likes
Plaster lining made of marble granules combined with white cement to finish concrete pools
Marezzo 0 likes
An imitation marble with color pigments produced with Keenes cement
Marine Plywood 0 likes
Plywood panels with additional constricting veneer quality characteristics
Marine Varnish1 like
marine varnish
Varnish designed to resist lengthy submersion in salt water or fresh water and contact with maritime atmosphere
Marked Crossing 0 likes
A crosswalk or path for pedestrians to traverse a vehicular way
Market Area 2 likes
The geographic area from which a business obtains its customer base
Market Data Approach 0 likes
A real estate appraisal approach where a property is compared to other properties that have just been sold or leased
Market Study 2 likes
Future demand forecast in a specific market area for a real estate project considered for development on a specific site
Market Value 1 like
The current price of a unit on the open market where savvy buyers and sellers are not coerced to complete the transaction
Marketable Title 1 like
Land title unhindered by any lien that could impact its worth or marketability
Marl 3 likes
Calcareous clay generally found in defunct fresh water basins, wetlands, or at the bottom of shallow lakes
Marquee2 likes
Canopy above an entrance
Large tent for outdoor receptions
Marquetry 0 likes
Decorative work produced by including pieces of material such as wood or ivory in a wood veneer, then adding it to the surface of furniture
Masking 0 likes
Protecting areas not to be painted with masking tape
Applying protective materials employed in plastering machine applications
Masking Power 3 likes
Ability of a fired glaze to visually mask a material
Masking Tape2 likes
masking tape
Adhesive paper tape that masks or protects parts of a surface
Mason 1 like
Skilled tradesperson who works with stone or brick, especially in the building trades; see Stone mason or Brick mason
Masonite3 likes
Trademark; Fiberboard building panels produced from steam-exploded wood fiber and binders
Masonry 2 likes
Stone, brick, tile or similar building materials usually bonded with mortar to create a wall
Masonry Accessory 3 likes
Component needed for masonry construction
Masonry Anchor 3 likes
A fastening mechanism employed in a masonry wall
Masonry Base 1 like
The lowest path of masonry in a footing, foundation or wall
Masonry Bricks 0 likes
Bricks shaped and molded in diverse sizes
Masonry Cement 0 likes
Portland cement with dry admixtures that augments the effectiveness of mortar
Masonry Chimney 1 like
Vertical noncombustible masonry construction with a flue that enables the removal of smoke and other gases
Masonry Cleaning 1 like
Removal of extra grout, concrete and mortar stains from an exterior masonry structure surface; in older structures, the cleaning is usually achieved with steam or chemicals, and occasionally with sandblasting
Masonry Control Joint 2 likes
A groove in a masonry joint to control where cracking occurs
Masonry Facing Panel 1 like
Masonry construction with a decorative external surface
Masonry Flashing 1 like
A thin sheet of plastic, metal, rubber or waterproof paper that stops water passing through a joint in a wall, roof, or other structure; the material employed and the process to waterproof roof joints and other unprotected parts of external masonry
Masonry Floor 0 likes
Shaped or molded masonry including stone, brick, tile, or concrete units employed as finished floor coverings
Masonry Furring 1 like
Metal or wood strips attached to a masonry surface where wall boards or sheathing is connected
Masonry Grout0 likes
masonry grout
Cementitious material and aggregates in water that fills hollow areas of cavities and masonry units
Masonry Insulation 0 likes
Insulation for hollow masonry units
Masonry Lintel 0 likes
Masonry component positioned in a masonry wall to support loads above an opening
Masonry Manhole 1 like
Masonry vertical access shaft from the surface to the underground service area
Masonry Painting 0 likes
Paint used to seal or color masonry
Masonry Paver 0 likes
Shaped or molded stone, concrete, ceramic brick or tile, or cast-in place concrete units employed for patios and driveways
Masonry Plaque1 like
masonry plaque
An inscribed tablet constructed with shaped or molded units composed of stone, tile, brick, or concrete
Masonry Plaster 1 like
A plaster surface on masonry usually made from a cement-based mixture, usually stucco on newer buildings
Masonry Reinforcing 0 likes
Lateral steel rods, wire, or mesh positioned between masonry units
Masonry Research 0 likes
See Masonry Institute of America
Masonry Restoration 1 like
Repairing a masonry structure
Masonry Sandblast 2 likes
Scraping or cutting masonry structure surfaces with sand discharged from a nozzle at high speed to clean masonry; employed rarely because it can remove the glazed or polished exterior surface
Masonry Society, The (TMS) 1 like
105 South Sunset Street, Suite Q, Longmont, CO 80501-6172, Tel: (303) 939-9700, Fax: 303-541-9215, URL: www.masonrysociety.org
Masonry Tie 1 like
A reinforcing strip, wire or bar employed to link masonry courses or secure them with a wood or concrete backup wall
Masonry Unit 1 like
Any brick, tile, block or stone employed in masonry construction
Masonry Veneer 1 like
A nonstructural layer of brick or stone connected on the exterior of a masonry structure or wood framed wall
Masonry Vent3 likes
masonry vent
Opening in a masonry structure to supply natural unprocessed ventilation
Masonry Wall 1 like
A wall made of stone, brick or concrete block
Masonry Waterproofing 1 like
Materials applied to masonry structures to waterproof them
Masonry, Gypsum 1 like
See Gypsum Masonry
Masons Hammer3 likes
masons hammer
Masons and tile setters tool that scores and cuts tile, block, stone, or brick
Mass 0 likes
Quantity of matter that forms a body that may have an indefinite shape; also the quantity of a body that measures its inertia
Mass Concrete 0 likes
Concrete without reinforcing; known as plain concrete
Large quantity of concrete cast in place to resist loads
Mass Curing 2 likes
Adiabatic curing that employs sealed holders
Mass Law 0 likes
The law associated with the transmission loss of walls in acoustics that in a part of a frequency range, the magnitude of the loss is totally regulated by the mass per unit area of the panel; additionally, the transmission loss increases one decibel for each doubling of frequency or doubling of the panel mass per unit area
Master Key3 likes
master key
A key that opens numerous locks, although each have been separately keyed
Masterformat 0 likes
Copyrighted title of a uniform indexing system for construction specifications created by the Construction Specifications Institute and Construction Specifications Canada, called the CSI format or numbering system
Masterkeying 1 like
An arrangement of door lock cylinders with individual key changes that can be operated by a single key called the master key
Mastic 1 like
A pasty organic adhesive material employed as cement for setting tile or a protective coating for thermal insulation or waterproofing; see Asphalt Mastic and Flashing Cement
Mastic Grout 0 likes
A chemical mixture of organic and inorganic ingredients from the manufacturer which is more flexible and stain resistant than cement grout
Mat 0 likes
Large footing or foundation slab employed to reinforce a structure
A framework of reinforcing bars
Mat Formwork 1 like
Temporary reinforcement for a concrete mat during pouring or placing of concrete
Mat Foundation 0 likes
A concrete slab employed as a building, structure, or equipment foundation
Mat Glaze 1 like
Ceramic glaze with low gloss
Mat Reinforcing 1 like
Positioning of metal or steel bars in freshly poured concrete mat for reinforcement
Mat, Concrete 0 likes
See Concrete Mat
Mat, Floor1 like
floor mat
See Floor Mat
Matched Lumber 2 likes
Edge-dressed shaped lumbar that creates a close tongue-and-groove joint
Matching 0 likes
Machining boards that produce tongue and groove joints
Material 0 likes
Matter from which things are created; Important, essential, and relevant; physical things required for construction
Material Handling 1 like
Moving materials to and from a jobsite or workplace
Materialman 0 likes
A person or organization that provides construction materials for a project
Materials Used 0 likes
Includes the cost of materials for a project
Matrix 0 likes
Material that fills the spaces between the fine and course aggregates in concrete; the cement paste
Matter 0 likes
A physical substance that has mass and occupies space; either solid, liquid, or gas
Mattock2 likes
A hand tool for digging, grubbing, trimming and shaping wood similar to an axe with an arched blade perpendicular to the handle
Maturing Range 0 likes
The time-temperature range that a ceramic, glaze, or other material is fired to produce specific characteristics
Maturity Date 0 likes
Date when a commitment is due
Maul1 like
A heavy hammer for driving wedges
An implement similar to a sledge hammer with a wedge-shaped end employed for splitting wood
Maulstick 0 likes
A light stick with a padded leather ball at an end grasped by a painter in one hand to support the other hand
Mausoleum 2 likes
A large impressive tomb
Maximum Capable Earthquake 2 likes
Maximum earthquake ground shaking anticipated at a building site within the known geological conditions; the level of earthquake ground motion that has a 10 percent probability of being surpassed in a 100 years
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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