Glossary of structural engineering

Most of the terms listed in Wikipedia glossaries are already defined and explained within Wikipedia itself. However, glossaries like this one are useful for looking up, comparing and reviewing large numbers of terms together. You can help enhance this page by adding new terms or writing definitions for existing ones.

This glossary of structural engineering terms pertains specifically to structural engineering and its sub-disciplines. Please see glossary of engineering for a broad overview of the major concepts of engineering.

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A

• Absolute electrode potential –in electrochemistry, according to an IUPAC definition, is the electrode potential of a metal measured with respect to a universal reference system (without any additional metal–solution interface)
• Absolute pressure – is zero-referenced against a perfect vacuum, using an absolute scale, so it is equal to gauge pressure plus atmospheric pressure.
• Absolute zero – is the lower limit of the thermodynamic temperature scale, a state at which the enthalpy and entropy of a cooled ideal gas reach their minimum value, taken as 0. Absolute zero is the point at which the fundamental particles of nature have minimal vibrational motion, retaining only quantum mechanical, zero-point energy-induced particle motion. The theoretical temperature is determined by extrapolating the ideal gas law; by international agreement, absolute zero is taken as −273.15° on the Celsius scale (International System of Units), which equals −459.67° on the Fahrenheit scale (United States customary units or Imperial units). The corresponding Kelvin and Rankine temperature scales set their zero points at absolute zero by definition.
• Absorbance – In chemistry, absorbance or decadic absorbance is the common logarithm of the ratio of incident to transmitted radiant power through a material, and spectral absorbance or spectral decadic absorbance is the common logarithm of the ratio of incident to transmitted spectral radiant power through a material.
• Abutment – refers to the substructure at the ends of a bridge span or dam whereon the structure's superstructure rests or contacts.
• Acceleration – In physics, acceleration is the rate of change of velocity of an object with respect to time. An object's acceleration is the net result of any and all forces acting on the object, as described by Newton's Second Law. The SI unit for acceleration is metre per second squared (m s⁻²). Accelerations are vector quantities (they have magnitude and direction) and add according to the parallelogram law. As a vector, the calculated net force is equal to the product of the object's mass (a scalar quantity) and its acceleration.
• Access chamber –
• Acid – An acid is a molecule or ion capable of donating a hydron (proton or hydrogen ion H⁺), or, alternatively, capable of forming a covalent bond with an electron pair (a Lewis acid).
• Acid-base reaction – is a chemical reaction that occurs between an acid and a base, which can be used to determine pH. Several theoretical frameworks provide alternative conceptions of the reaction mechanisms and their application in solving related problems; these are called the acid–base theories, for example, Brønsted–Lowry acid–base theory.
• Acid strength – refers to the tendency of an acid, symbolised by the chemical formula HA, to dissociate into a proton, H⁺, and an anion, A⁻.
• Acoustics – is the branch of physics that deals with the study of all mechanical waves in gases, liquids, and solids including topics such as vibration, sound, ultrasound and infrasound.
• Acre – is a unit of land area used in the imperial and US customary systems. It is traditionally defined as the area of one chain by one furlong (66 by 660 feet), which is exactly equal to 10 square chains, ​¹⁄₆₄₀ of a square mile, or 43,560 square feet, and approximately 4,047 m², or about 40% of a hectare.
• Acrow prop – or BS prop is a piece of construction equipment. It is a telescopic tubular steel prop, used as a temporary support. A jackscrew is similar but not as long and not telescopic. Outside the UK an Acrow prop may be known as a jack post, adjustable post, telescoping prop or ... post, screw jack, adjustable steel column, adjustable steel prop or ... post, adjustable metal prop or ... post, as well as an adjustable shoring post or shore post.
• Activated sludge – The activated sludge process is a type of wastewater treatment process for treating sewage or industrial wastewaters using aeration and a biological floc composed of bacteria and protozoa.
• Activated sludge model – is a generic name for a group of mathematical methods to model activated sludge systems. The research in this area is coordinated by a task group of the International Water Association (IWA). Activated sludge models are used in scientific research to study biological processes in hypothetical systems. They can also be applied on full scale wastewater treatment plants for optimisation, when carefully calibrated with reference data for sludge production and nutrients in the effluent.
• Active transport –
• Actuator –
• Acute angle –
• Adenosine triphosphate –
• Adhesion –
• Adiabatic process –
• Aerobic digestion –
• Aerodynamics –
• Aerospace engineering –
• Afocal system –
• Aggregate (composite) –
• Aggregate (construction) –
• Agricultural engineering –
• Air conditioning –
• Albedo –
• Algae –
• Algebra –
• Algorithm –
• Alkane – In organic chemistry, an alkane, or paraffin (a historical name that also has other meanings), is an acyclic saturated hydrocarbon. In other words, an alkane consists of hydrogen and carbon atoms arranged in a tree structure in which all the carbon–carbon bonds are single. Alkanes have the general chemical formula C_nH_2n+2.
• Alkene –
• Alkyne –
• All-in ballast –
• Allowable Strength Design –
• Alloy –is a combination of metals or of a metal and another element. Alloys are defined by a metallic bonding character. An alloy may be a solid solution of metal elements (a single phase) or a mixture of metallic phases (two or more solutions). Intermetallic compounds are alloys with a defined stoichiometry and crystal structure. Zintl phases are also sometimes considered alloys depending on bond types.
• Alpha particle –
• Alternating current –
• Alternative hypothesis –
• Ammeter –
• Amino acid –
• Amorphous solid –
• Ampere –
• Amphoterism –
• Amplification factor –
• Amplifier –
• Amplitude –
• Anaerobic digestion –
• Angular acceleration –
• Angular momentum –
• Angular velocity –
• Anion –
• Annealing (metallurgy) –
• Annihilation –
• Anode –
• ANSI –
• Antigravity –
• Antimatter –
• Antineutron –
• Antiparticle –
• Antiproton –
• Applied Element Method –
• Applied engineering –
• Applied mechanics –
• Arc length –
• Arch – is a vertical curved structure that spans an elevated space and may or may not support the weight above it, or in case of a horizontal arch like an arch dam, the hydrostatic pressure against it.

• Archimedes' principle – states that the upward buoyant force that is exerted on a body immersed in a fluid, whether fully or partially submerged, is equal to the weight of the fluid that the body displaces and acts in the upward direction at the center of mass of the displaced fluid. Archimedes' principle is a law of physics fundamental to fluid mechanics. It was formulated by Archimedes of Syracuse.
• Arching or compressive membrane action in reinforced concrete slabs –
• Architecture – is both the process and the product of planning, designing, and constructing buildings or any other structures. Architectural works, in the material form of buildings, are often perceived as cultural symbols and as works of art. Historical civilizations are often identified with their surviving architectural achievements.

• Architectural engineering –
• Architrave – also called an epistyle; is the lintel or beam that rests on the capitals of the columns. It is an architectural element in Classical architecture. The term can also be applied to all sides, including the vertical members, of a frame with mouldings around a door or window. The word architrave is also used to refer more generally to a style of mouldings (or other elements) framing the top of a door, window or other rectangular opening, where the horizontal "head" casing extends across the tops of the vertical side casings where the elements join (creating a butt joint, as opposed to a miter joint).
• Area moment of inertia –
• Arithmetic mean –
• Arithmetic sequence –
• Aromatic hydrocarbon –
• Arrhenius equation –
• Arris –
• Artificial intelligence –
• Ashlar –
• Assembly language –
• Atom –
• Atomic mass –
• Atomic number –
• Atomic packing factor –
• Atomic physics –
• Atomic structure –
• Attic – (sometimes referred to as a loft) is a space found directly below the pitched roof of a house or other building; an attic may also be called a sky parlor or a garret. Because attics fill the space between the ceiling of the top floor of a building and the slanted roof, they are known for being awkwardly shaped spaces with exposed rafters and difficult-to-reach corners.
• Audio frequency –
• Austenitization –
• Automation –
• Automaton –
• Autonomous vehicle –
• Avogadro's number –
• Azimuthal quantum number –

B

• Bacteria –
• Balance sheet –
• Ballast – is material that is used to provide stability to a vehicle or structure. Ballast, other than cargo, may be placed in a vehicle, often a ship or the gondola of a balloon or airship, to provide stability.
• Barrier cable –
• Barometer –
• Baryon –
• Battery –
• Base –
• Basement –
• Baud –
• Beam –
• Bearing capacity –
• Beer–Lambert law –
• Belt –
• Belt friction –
• Bending –
• Bending moment –
• Benefit–cost analysis –
• Bent (structural) –
• Berm –
• Bernoulli differential equation –
• Bernoulli's equation –
• Bernoulli's principle –
• Beta particle –
• Binomial random variable –
• Biocatalysis –
• Biochemistry –
• Biology –
• Biomedical engineering –
• Biomimetic –
• Bionics –
• Biophysics –
• Bistable structure –
• Block and tackle –
• Boiling point –
• Boiling-point elevation –
• Bolt (fastener) –
• Boltzmann constant –
• Boson –
• Box girder –
• Boyle's law –
• Bravais lattice –
• Brayton cycle –
• Break-even analysis –
• Brewster's angle –
• Brick –
• Brickwork –
• Bridge –
• Brittle –
• Brownian motion –
• Buckling-restrained braced frame –
• Building engineering –
• Building services engineering –
• Bulk modulus –
• Buoyancy –

C

• Calculus –
• Calcium aluminate cements – Calcium aluminate cements are cements consisting predominantly of hydraulic calcium aluminates. Alternative names are "aluminous cement", "high-alumina cement" and "Ciment fondu" in French. They are used in a number of small-scale, specialized applications.
• Camber beam – In building, a camber beam is a piece of timber cut archwise, and steel bent or rolled, with an obtuse angle in the middle, commonly used in platforms, as church leads, and other occasions where long and strong beams are required. The camber curve is ideally a parabola but practically a circle segment as even with modern materials and calculations, cambers are imprecise.
• Castellated beam – is a beam style where an I-beam is subjected to a longitudinal cut along its web following a specific pattern in order to divide it, and reassemble the beam with a deeper web by taking advantage of the cutting pattern.
• Cant –
• Cantilever –
• Cantlop Bridge –
• Capacitance –
• Capacitive reactance –
• Capillarity –
• Carbon steel –
• Carbonate –
• Carnot cycle –
• Cartesian coordinates –
• Cast iron –
• Casting –
• Catenary –
• Cathode –
• Cathode ray –
• Cavity wall –
• Cell membrane –
• Cell nucleus –
• Cell theory –
• Cement –
• Cement render –
• Center of gravity –
• Center of mass –
• Center of pressure –
• Central force motion –
• Central limit theorem –
• Central processing unit –
• Centring –
• Centripetal force –
• Centroid –
• Centrosome –
• Chain reaction –
• Change of base rule –
• Charles's law –
• Chemical bond –
• Chemical compound –
• Chemical equilibrium –
• Chemical kinetics –
• Chemical reaction –
• Chemistry –
• Chloride –
• Chloroplast –
• Chromate –
• Chromosome –
• Circle –
• Circular motion –
• Civil engineering –
• Clausius–Clapeyron relation –
• Clausius inequality –
• Clausius theorem –
• Coastal engineering –
• Coefficient of performance –
• Coefficient of variation –
• Coherence –
• Cohesion –
• Collar beam –
• Color-tagged structure –
• Column –
• Common rafter –
• Compensation –
• Compiler –
• Composite order –
• Compressive strength –
• Computational fluid dynamics –
• Computer –
• Computer-aided design –
• Computer-aided engineering –
• Computer-aided manufacturing –
• Computer engineering –
• Computer science –
• Concave lens –
• Concrete –
• Concrete masonry unit –
• Concrete pump –
• Condensed matter physics –
• Confidence interval –
• Conjugate acid –
• Conjugate base –
• Construction aggregate –
• Construction engineering –
• Construction surveying –
• Continuum mechanics –
• Control engineering –
• Control systems engineering –
• Convex lens –
• Corbel –
• Corinthian order –
• Corrosion –
• Corrosion fatigue –
• Corrugated galvanised iron –
• Cosmic rays –
• Covalent bond –
• Crane –
• Crookes tube –
• Cross brace –
• Cross bracing –
• Cryogenics –
• Crystallization –
• Crystallography –
• Curvilinear motion –
• Cyclotron –

D

• Dalton's law –
• Dam –
• Damp proofing –
• Damped vibration –
• Darcy–Weisbach equation –
• DC motor –
• Dead load –
• Decibel –
• Deep cement mixing –
• Deep foundation –
• Definite integral –
• Deflection –
• Deformation (engineering) –
• Deformation (mechanics) –
• Degrees of freedom –
• Delta robot –
• Delta-wye transformer –
• Density –
• Deployable structure –
• Derivative –
• Design engineering –
• Dew point –
• Differential pulley –
• Dispersion –
• Displacement (fluid) –
• Displacement (vector) –
• Distance –
• Doppler effect –
• Doric order –
• Double tee –
• Drag –
• Dragon beam –
• Duct (flow) –
• Ductility –
• Dumpy level –
• Dynamic load testing –
• Dynamics –
• Dyne –

E

• Earthquake engineering –
• Earthquake-resistant structures –
• Earthworks (engineering) –
• Economics –
• Edge jointing –
• Elastic modulus –
• Elasticity –
• Electric charge –
• Electric circuit –
• Electric current –
• Electric displacement field –
• Electric generator –
• Electric field –
• Electric field gradient –
• Electric motor –
• Electric potential –
• Electrical potential energy –
• Electric power –
• Electrical and electronics engineering –
• Electrical conductor –
• Electrical insulator –
• Electrical network –
• Electrical resistance –
• Electricity –
• Electrodynamics –
• Electromagnet –
• Electromagnetic field –
• Electromagnetic radiation –
• Electromechanics –
• Electron –
• Electron pair –
• Electronegativity –
• Electronics –
• Electronvolt –
• Endothermic –
• Endurance time method –
• Energy –
• Engine –
• Engineering –
• Engineering brick –
• Engineering drawing –
• Engineering economics –
• Engineering ethics –
• Engineering physics –
• Environmental engineering –
• Environmental load –
• Engineering physics –
• Enzyme –
• Escape velocity –
• Estimator –
• Euler-Bernoulli beam equation –
• Excavator –
• Exothermic –
• Expansion joint –

F

• Facade engineering –
• Falling bodies –
• Falsework –
• Farad –
• Faraday –
• Farad –
• Faraday constant –
• Fascia –
• Feasibility study –
• Fermat's principle –
• Fibre-reinforced plastic –
• Finite element method –
• Fire protection engineering –
• FIRST –
• First fix –
• Fission –
• Flange –
• Flashing –
• Flat roof –
• Flexibility (engineering) –
• Flitch beam –
• Flue –
• Fluid –
• Fluid mechanics –
• Fluid –
• Fluid physics –
• Fluid statics –
• Flywheel –
• Focus –
• Foot-pound –
• Force –
• Force lines –
• Formwork –
• Foundation –
• Fracture toughness –
• Framing –
• Fraunhofer lines –
• Free fall –
• Frequency modulation –
• Freezing point –
• Friction –
• Function –
• Fundamental frequency –
• Fundamental interaction –
• Fundamental theorem of calculus –
• Furring –
• Fusion –

G

• Gable –
• Gauge –
• Galvanic cell –
• Gamma rays –
• Gas –
• Geiger counter –
• General relativity –
• Geometric mean –
• Geometry –
• Geophysics –
• Geotechnical engineering –
• Gluon –
• Graham's law of diffusion –
• Grating –
• Gravel –
• Gravitation –
• Gravitational constant –
• Gravitational energy –
• Gravitational field –
• Gravitational potential –
• Gravitational wave –
• Gravity –
• Gravity-based structure –
• Green roof –
• Ground state –
• Grout –

H

• H-beam –
• Hadron –
• Half-life –
• Half-timbering –
• Hammerbeam roof –
• Haptic –
• Hardness –
• Hardwood –
• Harmonic mean –
• Header –
• Heat –
• Heat transfer –
• Helmholtz free energy –
• Henderson–Hasselbalch equation –
• Henry's law –
• Hertz –
• High strength bolt –
• High-tensile steel –
• Hip roof –
• Hod –
• Hoist –
• Hollow structural section –
• Honeycomb structure –
• Horsepower –
• Huygens–Fresnel principle –
• Hydraulic cement –
• Hydraulic engineering –
• Hydraulics –
• Hydrocarbon –

I

• I-beam –
• Ice point –
• Ideal gas –
• Ideal gas constant –
• Ideal gas law –
• Imposed load –
• Indefinite integral –
• Inertia –
• Infill wall –
• Inflatable space structures –
• Influence line –
• Infrasound –
• Insulating concrete form –
• Integral –
• Integral transform –
• International Structural Engineering and Construction Society –
• International System of Units –
• Interval estimation –
• Intrados –
• Impedance –
• Inclined plane –
• Industrial engineering –
• Inorganic chemistry –
• Ion –
• Ionic bond –
• Ionic order –
• Ionization –
• Iron –
• Isotope –

J

• Jack rafter –
• Jackscrew –
• Jetty –
• Joinery –
• Jointing –
• Joist –
• Joule –

K

• Kalman filter –
• Kelvin –
• Kee Klamp –
• Kentledge –
• Keystone –
• Kinematics –
• King post –
• King post truss –
• Kirchhoff's circuit laws –
• Kirchhoff's equations –

L

• Lally column –
• Laminar flow –
• Laplace transform –
• LC circuit –
• Lepton –
• Lever –
• L'Hôpital's rule –
• Light –
• Lightening holes –
• Limit load (physics) –
• Limit state design –
• Linear actuator –
• Linear algebra –
• Linear elasticity –
• Lintel –
• Liquid –
• Live load –
• Load bearing –
• Load-bearing wall –

M

• Mach number –
• Machine –
• Machine element –
• Machine learning –
• Maclaurin series –
• Magnetic field –
• Magnetism –
• Manufacturing engineering –
• Mass balance –
• Mass density –
• Mass moment of inertia –
• Mass number –
• Mass spectrometry –
• Material properties –
• Materials science –
• Mathematical optimization –
• Mathematical physics –
• Mathematical tile –
• Mathematics –
• Matrix –
• Matter –
• Maxwell's equations –
• Mean –
• Measures of central tendency –
• Mechanical advantage –
• Mechanical engineering –
• Mechanical filter –
• Mechanical wave –
• Mechanics –
• Mechanism –
• Median –
• Melting –
• Melting point –
• Meson –
• Metal alloy –
• Metallic bond –
• Mid-range –
• Middle-third rule –
• Midhinge –
• Mining engineering –
• Miller indices –
• Mobile robot –
• Mode –
• Modified compression field theory –
• Modulus of elasticity –
• Molality –
• Molar concentration –
• Molar absorptivity –
• Molar mass –
• Molarity –
• Molding –
• Molecule –
• Molecular physics –
• Moment of inertia –
• Moment redistribution –
• Monocoque –
• Multibody system –
• Multidisciplinary design optimization –
• Multi-function structure –
• Muon –

N

• Nanoengineering –
• Nanotechnology –
• Navier–Stokes equations –
• Neutrino –
• Newtonian fluid –
• Non-hydraulic cement –
• nth root –
• Nuclear binding energy –
• Nuclear engineering –
• Nuclear physics –
• Nuclear potential energy –
• Nuclear power –

O

• Offshore construction –
• Ohm –
• Ohm's law –
• Open web steel joist –
• Optics –
• Organic chemistry –
• Ortman key –
• Osmosis –
• Overhang –

P

• Parallel circuit –
• Parity (mathematics) –
• Parity (physics) –
• Paraffin –
• Particle accelerator –
• Particle displacement –
• Particle physics –
• Pascal's Law –
• Pendulum –
• Permissible stress design –
• Petroleum engineering –
• pH –
• Phase (matter) –
• Phase (waves) –
• Phase equilibrium –
• Photon –
• Physical chemistry –
• Physical quantity –
• Physics –
• Pile cap –
• Pile splice –
• Planck constant –
• Plasma physics –
• Plastic hinge –
• Plasticity –
• Plate (structure) –
• Ply (layer) –
• Pneumatics –
• Point estimation –
• Polyphase system –
• Post (structural) –
• Power (electric) –
• Power (physics) –
• Power factor –
• Pre-engineered building –
• Pressure –
• Prestressed concrete –
• Prestressed structure –
• Probability –
• Probability distribution –
• Probability theory –
• Progressive collapse –
• Psi particle –
• Pulley –
• Pyroshock –

Q

• Quantum electrodynamics –
• Quantum field theory –
• Quantum mechanics –
• Quantum physics –
• Quark –
• Queen post –

R

• Rafter –
• Rain gutter –
• Regelation –
• Reinforced concrete –
• Relative density –
• Relative velocity –
• Reliability engineering –
• Resal effect –
• Response spectrum –
• Reynolds number –
• Rheology –
• Rigid body –
• Robotics –
• Rolled steel joist –
• Roof –
• Root-mean-square –
• Root-mean-square speed –
• Rotational energy –
• Rotational speed –
• Rubble trench foundation –

S

• Sandwich theory –
• Sanitary engineering –
• Saturation (chemistry) –
• Saturated compound –
• Scalar (mathematics) –
• Scalar (physics) –
• Scalar multiplication –
• Screw –
• Second fix –
• Seismic analysis –
• Semi-monocoque –
• Series circuit –
• Serviceability (structure) –
• Servo –
• Servomechanism –
• Settlement (structural) –
• Shadow matter –
• Shallow foundation –
• Shear strength –
• Shear stress –
• Shell –
• Shortwave radiation –
• Shukhov Rotunda –
• SI units –
• Signal processing –
• Simple machine –
• Siphon –
• Skyscraper –
• Softwood –
• Soil structure interaction –
• Solid mechanics –
• Solid-state physics –
• Solid solution strengthening –
• Solubility –
• Sound –
• Space frame –
• Span (engineering) –
• Special relativity –
• Specific heat –
• Specific gravity –
• Specific volume –
• Specific weight –
• Specified load –
• Spontaneous combustion –
• State of matter –
• Static load testing –
• Statical determinacy –
• Statics –
• Statistics –
• Statnamic load test –
• Stave (wood) –
• Stefan–Boltzmann law –
• Stewart platform
• Stiffness –
• Stoichiometry –
• Storm drain –
• Strain –
• Strain hardening –
• Street gutter –
• Strength of materials –
• Stress –
• Stress-strain analysis –
• Stress-strain curve –
• Stressed skin –
• Structural analysis –
• Structural channel –
• Structural engineer –
• Structural engineering –
• Structural engineering software –
• Structural engineering theory –
• Structural fracture mechanics –
• Structural health monitoring –
• Structural integrity and failure –
• Structural load –
• Structural material –
• Structural mechanics –
• Structural pipe fitting –
• Structural robustness –
• Structural steel –
• Structural steel design –
• Structural system –
• Strut channel –
• Subbasement –
• Subframe –
• Sublimation –
• Subsumption architecture –
• Surface tension –
• Superconductor –
• Superhard material –
• Surveying –
• Suspension bridge –

T

• T-beam –
• Tainter gate –
• Technical standard –
• Temperature –
• Tensile force –
• Tensile modulus –
• Tensile strength –
• Tensile structure –
• Tensile testing –
• Tension member –
• Thermal conduction –
• Thermal equilibrium –
• Thermal radiation –
• Thermodynamics –
• Theory of relativity –
• Thévenin's theorem –
• Thin-shell structure –
• Three-phase –
• Tie (cavity wall) –
• Timber framing –
• Topology optimization –
• Torque –
• Torsion –
• Torsional vibration –
• Toughness –
• Tower –
• Trajectory –
• Transducer –
• Transient load –
• Transportation engineering –
• Trigonometric functions –
• Trigonometry –
• Trimean –
• Trimmer –
• Triple point –
• Tripod (foundation) –
• Trouton's rule –
• Truncated mean –
• Truss –
• Truss connector plate –
• Turbine –
• Turbomachinery –
• Turbulence –
• Twin bridges –

U

• Ultimate tensile strength –
• Uncertainty principle –
• Unicode –
• Unit vector –
• Universal beam –
• Universal column –
• Unsaturated compound –
• Urban engineering –
• Utility frequency –

V

• Vacuole –
• Vacuum –
• Valence –
• Valence band –
• Valence bond theory –
• Valence electron –
• Valence shell –
• Valve –
• van der Waals equation –
• van der Waals force –
• van 't Hoff equation –
• van 't Hoff factor –
• Variable capacitor –
• Variable resistor –
• Vector space –
• Venturi effect –
• Vibration –
• Virtual work –
• Viscoelasticity –
• Viscosity –
• Volt-ampere –
• Volt-ampere reactive –
• Volta potential –
• Voltage –
• Volumetric flow rate –
• von Mises yield criterion –
• Voussoir –

W

• W-beam –
• Wastewater engineering –
• Watt –
• Wave –
• Wavelength –
• Wedge –
• Weighted mean –
• Weld access hole –
• Wet-bulb temperature –
• Wheel and axle –
• Wind engineering –
• Windpost –
• Winsorized mean –
• Wood preservation –
• Woodworking joints –

X

• X-bracing –
• X-coordinate –

Y

• Y-coordinate –
• Yield –
• Young's modulus –

Z

• Zero Defects –
• Zeroth law of thermodynamics –

See also

• Structural engineering
• Civil engineering
• Engineering
• Glossary of engineering
• National Council of Examiners for Engineering and Surveying
• Fundamentals of Engineering Examination
• Principles and Practice of Engineering Examination
• Graduate Aptitude Test in Engineering
• Glossary of aerospace engineering
• Glossary of civil engineering
• Glossary of electrical and electronics engineering
• Glossary of mechanical engineering
• Glossary of architecture
• Glossary of areas of mathematics
• Glossary of engineering
• Glossary of prestressed concrete terms