Term Definition
Eraser 0 likes
A rubbery substance employed by drafters to eliminate pencil or ink marks from their drawings
Erasing Machine 0 likes
A hand-held electric motor device that rotates an eraser that drafters employ to remove pencil or ink marks
Erasing Shield 0 likes
A narrow metal stencil with holes of different sizes and shapes, enabling a drafter to erase ink and pencil marks with accuracy
Erect 0 likes
To construct or build by assembling parts
Vertical or upright
Erection 2 likes
A structure or building
Ergonomics 0 likes
Applied science concerned with the effect of the physical environment on a person’s comfort and health; for example, ascertaining the correct chair height for office workers
Erode 1 like
Gradual deterioration or destruction
Erosion 0 likes
Gradual deterioration of material due to abrasive activity
Deterioration due to wind or water motion
Degeneration of paint films
Errors and Omissions Insurance 0 likes
Insurance held by architects and engineers to indemnify their clients against losses due to an architect or engineer’s professional negligence; also called E and O Insurance, Malpractice Insurance, or Professional Indemnity Insurance
Escalation 1 like
The acceleration of building expenses due to inflation or other issues
Escalator 0 likes
A power-driven stairway in an endless belt that goes up or down without interruption
Escheat 0 likes
The transfer of property to the state when a person passes away without a will or heirs
Escrow 2 likes
The handling of documents or funds by a third party on behalf of the buyer and/or seller that is released only after a specific condition has been met
Escutcheon 0 likes
A decorative plate surrounding a pipe that passes through a floor or wall to conceal the hole that has been cut
Essential Facilities 0 likes
Buildings, structures, or accommodations designated essential and projected to be secure and functional following an earthquake; includes hospitals and other medical facilities with surgery or emergency treatment areas, fire and police stations, or government communication and disaster facilities and accommodations
Essential Oils 1 like
Volatile, liquid compounds with an odor, usually derived from plants; not necessarily oils, but have low solubility in water; examples include cedar, bergamot, lavender, and camphor oil; used to flavor food, and in perfumery
Essential Services Act 0 likes
An act that that essential services buildings shall be ready to provide essential services to the public following a disaster; the building will be designed and built to minimize fire hazards, and to resist to the greatest extent, the forces created by an earthquake, gravity, water, and wind
Estate 1 like
The entire ownership of property, possessions and monies
The assets of the deceased
A large property, normally with a large residence
Ester 2 likes
Organic compound produced from an alcohol and an organic acid by removing water
Ester Gum 0 likes
Resin created synthetically by the reaction of rosin and glycerine
Estimate 1 like
The material, labor, and other expenses that a contractor forecasts for a project, described in the contractor‘s proposal bid
To roughly calculate the amount, or value of something
Estimate of Construction Cost, Detailed 1 like
A calculation of expenses based on detailed material and labor analysis for all work items
Estimating 1 like
A process of calculating the essential quantity of materials, labor and equipment for a particular project; might be formal and precise, or quick and inexact
ET 1 like
See Net Effective Temperature
Etch 0 likes
Transferring designs to metal or glass by using corrosive acidic action; employing acid to cut lines into metal or eliminate the surface of concrete
Etch Acid 0 likes
A chemical solution employed for etching
Etched Nails 1 like
Nails, chemically treated in order to enhance their holding power for wood framing
Ethane 0 likes
A highly flammable colorless odorless gas
Ethanol 0 likes
A colorless alcohol
Ethyl Acetate 1 like
Fast evaporating solvent produced from acetic acid and ethyl alcohol
Ethyl Alcohol2 likes
ethyl alcohol
Alcohol produced by distilling fermented grain
Ethyl Chloride 0 likes
Toxic refrigerant, now rarely employed
Ethyl Lactate 1 like
Solvent produced by combining lactic acid and ethyl alcohol
Ethylene Plastic 2 likes
Plastics based on resins produced by polymerizing ethylene or copolymerizing ethylene with at least one unsaturated compound
ETS 0 likes
Environmental Tobacco Smoke
Eutectic 0 likes
A particular mixture of two substances, especially an alloy, providing the lowest freezing point of all combinations of the two constituents
Eutectic Point 1 like
Freezing temperature for eutectic solutions
Eutectic Salts 1 like
Materials that melt at low temperatures absorbing large amounts of heat; afterwards, during recrystallization, the heat is discharged
A method employed to store solar energy
Evaporate 0 likes
When a liquid changes into a gas or vapor below its boiling point; heat is absorbed in the process
Evaporation Rate 0 likes
Rate of evaporation of a solvent
Evaporation Rate, Final 2 likes
Time lapsed for the total evaporation of all solvents
Evaporation Rate, Initial 1 like
Time interval during which low-boiling solvents totally evaporate
Evaporative Condenser 0 likes
Device employing open spray or spill water to lower the temperature of a condenser; evaporation of some of the water cools down the condenser water and lowers water intake
Evaporator 0 likes
A device that turns the liquid form of a chemical into a gaseous state
Evaporator (Dry Type) 0 likes
Evaporator where the refrigerant is in droplets
Evaporator (Flooded) 1 like
Evaporator that always contains liquid refrigerant
Evaporator Coil 0 likes
The component of a cooling system absorbing heat from air; see condensing unit
Evaporator Fan 1 like
Fan that boosts airflow over an evaporator’s heat exchange surface
Evaporator Pressure Regulator 0 likes
Automatic pressure regulating valve that maintains a specified temperature and pressure in the evaporator in the suction line between evaporator outlet and compressor inlet
Eviction 0 likes
The legal process of forcing a defaulting tenant to leave a property
Evidence 1 like
Testimony, documents, and items presented in a judicial proceeding to validate the assertions of either party
EVT 0 likes
Equi-Viscous Temperature
EWC 0 likes
Electric Water Cooler
EWWF 0 likes
Electrically Welded Wire Fabric
EWWM 0 likes
Electrically Welded Wire Mesh
Ex Parte Proceeding 0 likes
When a party in a dispute appears before a judge without the other person’s presence
Excavation 2 likes
A hole formed by digging, hollowing out, or scooping
Excelsior 1 like
Wood wool
Exclusive Agency 1 like
A listing agreement to sell or lease property during a given period with a real estate broker that excludes other brokers; the owner still has the right to sell the property without paying commission
Exclusive Listing 2 likes
Exclusive Agency listing
Exclusive Right to Sell 0 likes
A listing agreement to sell or lease ones property during a specified period with a real estate broker, excluding other brokers; the broker will still receive a commission if the property is sold by the owner
Excrete 0 likes
To isolate and discharge waste matter produced during the metabolic process
Exculpatory Clause 1 like
A provision in a contract relieving a party of liability in executing the contract; usually issued by the party seeking to absolve itself of liability
Execute 0 likes
1.To carry out some intention, action, or work
To authenticate a legal document through signature
Executive Ability 0 likes
The ability to manage and delegate people and tasks, and deal with the various responsibilities involved in running a business; management ability
Executor 1 like
A person or entity designated to carry out the provisions of a will
Executri 2 likes
A female executor
Exemplary Damages 0 likes
Damages awarded to a plaintiff and against a defendant in a lawsuit to punish the defendant’s wrongdoing when the acts were willfully malicious, oppressive, fraudulent, violent, or extremely negligent; also called punitive damages
Exercise Bicycle 0 likes
A stationary bicycle employed for fitness and health
Exfiltration 0 likes
Gradual flow of air from indoors to the exterior
Exfoliate 0 likes
Abrasion and elimination of fine layers or flakes from a surface
Exhaust Fan2 likes
exhaust fan
An electrically driven device that extracts dust, fumes, or odors from an area
Exhaust Hood1 like
exhaust hood
A hood, generally square or rectangular, that accommodates an exhaust fan which extracts dust, fumes, or odors from an area
Exhaust Port 0 likes
An aperture that conveys fluid through to the downstream pressure of a system
Exhaust Valve 0 likes
A portable port which serves as a vent for cylinder gases in an engine or compressor
Exhaust Ventilation 1 like
Mechanical extraction of air from a section of a building
Exhibit 2 likes
A document or item presented as evidence in a court of law
Exit 0 likes
A passage, door through which a person or object may leave a room or building; egress
Exit Device2 likes
exit device
Panic hardware
Exit Light 0 likes
A light device mounted above an exit door that remains illuminated in the event of a power outage; independently powered and deliberately positioned to guide those who want to leave a building or structure
Exit Lock 1 like
A dead bolt unit installed in an exit door
Exit Sign2 likes
exit sign
A sign that points the way out of a building or room
Exothermic Reaction 0 likes
A reaction which radiates heat
Expansion 1 like
An increase in dimensions, often when heat is applied
Expansion Coefficient 0 likes
The increase in volume or length per unit for each temperature rise of one degree Fahrenheit
Expansion Joint 0 likes
Fibrous material, 1/2 inch thick, mounted in and surrounding a concrete slab to enable it to move vertically along the stationary foundation wall
Expansion Screed 0 likes
A sheet metal plaster screed allowing for some movement of adjacent panels of external plaster
Expansion Shield 3 likes
Device placed in predrilled concrete or masonry holes that gets bigger while a bolt or screw is inserted tightly; employed to secure items
Expansion Valve0 likes
expansion valve
Pressure-operated, device in a refrigerating system that lowers the pressure from the high to low side
Expansive Soils 0 likes
Earth that expands and contracts based on its water content; Betonite is considered an expansive soil
Expendable Refrigerant System 1 like
See Chemical Refrigeration
Experimental Analysis 0 likes
Analysis characterized by empirical observation of measurable behavior which is predictable and controllable
Expert Witness 0 likes
A witness whose skill, experience, education, or knowledge of a subject is recognized as qualified to give an informed opinion on issues pertaining to that subject
Explosive 0 likes
A volatile material employed to dislodge or loosen certain formations of rock and earth; dramatic and sudden
Explosive Limits 0 likes
The ratio of solvent vapor to air range where the mixture will explode if lit; at atmospheric pressure, the critical ratio spans from about 1 to 12 percent of solvent vapor by volume
Exposed Aggregate Finish 1 like
A way of finishing concrete that cleans the cementsand mixture from the uppermost layer of the aggregate, normally gravel; commonly employed in patios, driveways and other outdoor surfaces
Exposed Grid 0 likes
A suspended acoustic ceiling framework that can be seen below, after construction is completed
Exposure 0 likes
Being in contact with an environmental or social situation that has consequences, beneficial or detrimental
The plate or film subjected to light when taking a photograph
Wooden shake or shingle component that is subjected to the elements
Expressway 0 likes
Multi-lane superhighway for fast moving vehicles that has entrance and exit ramps at specified distances, no cross roads, and no pedestrians; also known as a Freeway
Extender 0 likes
Low cost pigment that enhances flow, decreases gloss, and stabilizes the suspension
Extension Ladder1 like
extension ladder
A flat ladder that can be lengthened by sliding one part over another to add more height
Extension Link 0 likes
A device employed to increase a bored lock’s backset
Exterior Door 0 likes
A door fabricated to endure the elements; facilitates entry and exit from a building or structure to the exterior
Exterior Elevation 0 likes
Architectural drawing that illustrates the projection on an upright plane of a building’s exterior surface
Exterior Fixture 0 likes
An electrical lighting fitting that may be installed outside, due to its capacity to endure the elements
Exterior Painting 0 likes
Adding sealer or paint to an outside surface
Exterior Plywood 0 likes
Plywood that is bonded with adhesive and is highly resistant to the elements, water at varying temperatures, microorganisms, dry heat, and steam
Exterior Tile 0 likes
Tile used in outside functions
Exterior Veneer 0 likes
Veneer added to surfaces exposed to the elements
Exterior Wall 0 likes
Any external wall other than a party wall serving as a vertical enclosed area of a building
Exterior Wood Door Trim 0 likes
Finish parts of wood, such as moldings, applied around the openings of exterior doors
Exterior Wood Trim 0 likes
Finish components of wood including moldings, mounted around varying openings on outside surfaces
External Drive1 like
external drive
A drive with its own separate power supply and fan outside the computer system enclosure that can be connected to a computer by a cable
External Vibrator 0 likes
Vibrating device connected to formwork in order to strengthen fresh concrete; mainly employed in precast construction
Extinguisher, Fire1 like
fire extinguisher
See Fire Extinguisher
Extra Work 0 likes
Work performed by a contractor that was not within the scope of the work specified in the original contract
Extract 0 likes
To get something with effort
To separate from a mixture by physical or chemical means
To obtain something from its source
A concentrated product
Copy or take a passage of text from a larger piece of text
Obtaining a natural resource from the earth
Extractive Bleeding 0 likes
Stains appearing on the surface of wood as a result of extractives leached out by moisture or water
Extractor 0 likes
A laundry mechanism that eliminates water from laundered fabrics via high speed centrifugal spinning so they are damp and prepared for tumble drying with hot air
Extrados 0 likes
The outside curve in a vault or arch
Extraordinary Flood 1 like
A deluge of water of greater volume than is anticipated in a given place; overflow from a source such as a broken pipe or river
Extrapolate 0 likes
To employ known facts from which to draw inferences or conclusions about the unknown, assuming that existing trends will continue or similar approaches will be pertinent
Extras 0 likes
Additional work asked of a contractor that was not included in the original contract; invoiced separately but does not change the original contract, although building costs are increased
Extrusion 0 likes
Something that bulges out or protrudes from its surroundings; also forcing soft material through a mold or nozzle
Eye 0 likes
Organ of sight
Center of a tropical cyclone that has completely calm light wind and no rain; calm area at the center of a storm
A loop that receives a small hook
A metal through which a rod or rope can be inserted
When a person pays attention by gazing
Eyebolt, Forged1 like
forged eyebolt
A heavyweight metal bolt with an eye at its end that may be employed as a fastening mechanism
Eyebrow 0 likes
A small roofed protrusion that extends from a building or structure
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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