This civil engineering and construction dictionary provides meaning and images to clarify your concept.
A
- A-Frame
- A-type bridge
- A/C
- Abandonment of Work
- Abatement of Action
- Abeyance
- Abioseston
- Ablution Fitting
- Abney level
- Abnormal failure
- Above ground
- Above Rail Level (ARL)
- Abrams’ law
- Abrupt Wave
- ABS (Acrylonitrile Butadiene Styrene)
- Abscissa
- Abseil Survey
- Absolute block
- Absolute possession
- Absolute pressure
- Absorption
- Absorption capacity
- Absorption rate
- Abutment
- ACA Form of Building Agreement
- ACAS
- Accelerated Weathering
- Accelerator
- Accelerometer
- Access chamber
- Access permit
- Access to Neighbouring Land Act 1992
- Accidental Error
- Acclivity
- Accommodation
- Accommodation bridge
- Accreditation
- Accrued Rights
- Accuracy
- Accuracy VS. Precision
- Acequia
- Acid
- Acid rain
- Acid regression stage
- Acidic
- Acidified
- Acidity
- Acoustic Board
- Acoustic Clip
- Acoustic Construction
- Acoustic Finish
- Acoustic Floor
- Acoustic Lining
- Acoustic Plaster
- Acoustic Tile
- Acoustics
- Acquisition
- Acre
- Acrow
- Acrylated Rubber Paints
- Acrylic Resin
- Acrylic Sealants
- Acrylic Sheet
- Acrylonitrile Butadiene Styrene (ABS)
- Act of God
- Act of Parliament
- Action
- Activated carbon
- Activated sludge
- Activated sludge process
- Active earth pressure
- Active Fire Protection
- Active Leaf
- Active Solar Heating
- Activity
- Actuator
- Acute crossing
- Ad hoc
- Ad Idem
- Adaptor
- Addendum Bills
- Addendum or Addenda
- Additional Work
- Additive
- Addressable System
- Adds
- Adhesion
- Adjacency matrix
- Adjoining Property
- Adjudication
- Adjustable Steel Prop
- Adjustment switch
- Administrative Charges
- Administrative Receiver
- Admissibility of Evidence
- Admixture
- Adobe
- Adsorbate
- Adsorbent
- Adsorption
- Advance
- Advance Waste Treatment (AWT)
- Aeration
- Aeration liquor
- Aeration tank
- Aerobes
- Aerobic
- Aerobic bacteria
- Aerobic decomposition
- Aerobic digestion
- Aerobic process
- Aesthetics
- Affidavit of non-collusion
- Age tank
- Agent
- Agglomeration
- Aggregate
- Agronomic rates
- AHBC
- Air binding
- Air Conditioning
- Air gap
- Air Padding
- Air Relief
- Air stripping
- Air test
- Air-Entrained Concrete
- Aircrete
- Airlift
- Algae
- Algal Bloom
- Algicide
- Alignment
- Aliphatic Hydroxy Acids
- Alkali
- Alkalinity
- All-in ballast
- Allowance
- Alluvial
- Alluvium
- Altitude valve
- Aluminum
- AM
- Ambient
- Ambient compensation
- Ambient conditions
- Ambient temperature
- Ampere
- Anaerobes
- Anaerobic
- Anaerobic bacteria
- Anaerobic decomposition
- Anaerobic digester
- Anaerobic digestion
- Anaerobic selector
- Analyzed
- Anchor
- Anchor bolt
- Anchor length
- Anemometer
- Angle
- Angle of attack
- Angle of repose
- Angle post
- Anion
- Anionic polymer
- Annual Percentage Rate (APR)
- Anoxic
- Anoxic denitrification
- AOCL
- AOCR
- Appurtenance
- Apron
- Aqueous
- Aquifer
- Arch
- Arch back
- Arch cladding
- Arch lining
- Architect
- Architectural design
- Architectural styles
- Architectural terracotta
- Architecture
- Architrave
- Area well
- Arithmetic mean
- Arris
- Arris rail
- Arrival line
- Arterial
- Arterial highway
- Artesian
- Artesian well
- Artifact
- Artificial groundwater table
- As-built drawing
- Ashlar
- Ashlar masonry
- Aspect
- Asphalt
- Asphalt Rubber (AR)
- Aspirate
- Assessment of a structure
- Astragal
- Asymmetry
- ATP
- Attached growth process
- Attachment weld
- Attorney
- Austenitic manganese
- Authorized walking
- Automatic ballast
- Automatic barrier
- Automatic Barrier Crossing Locally Monitored (ABCL)
- Automatic Half Barrier Crossing (AHBC)
- Automatic Power Control Magnets
- Automatic tamping and lining machine
- Automatic Train Protection (ATP)
- Automatic Warning System (AWS)
- Autotrophic
- Auxiliary lane
- Average demand
- AW
- AWS
- Axed arch
- Axial load
- Axle counter
- Axle load survey equipment
- Azimuth
B
- Back Addition
- Back Crossing
- Back Edge
- Back Edge Corner
- Back Pressure
- Back Rail
- Back-hole Drill
- Backcrossing
- Backfill
- Backfill Compaction
- Backflow
- Backflushing
- Backsight (BS)
- Backsiphonage
- Backwashing
- Backwater Gate
- Bacteria
- Baffle
- Bainitic Steel
- Balance
- Ballast
- Ballast Attrition
- Ballast Board/Plate
- Ballast Cleaning
- Ballast Consolidation
- Ballast Depth
- Ballast Packing
- Ballast Profile
- Ballast Regulating
- Ballast Shoulder
- Ballast Shoulder Surcharge
- Ballast Wall
- Ballasted Track
- Balling
- Baluster
- Balustrade
- Band Course
- Bank
- Barrier
- Barrow Crossing
- Base Course
- Base of Flangeway
- Basement Material
- Baseplate
- Baseplate Pad
- Basin
- Batch Process
- Batten
- Batter
- Bay Line
- Bay Platform
- Beam
- Bearing Wall
- Begin Vertical Curve (BVC)
- Bell
- Bell Mouth
- Bench Mark (BM)
- Bending
- Bentonite
- Berm
- BI-directional Line
- Bill of Quantity (BOQ)
- Binder
- Biodegradable
- Bioflocculation
- Biological Growth
- Biological Process
- Biomass
- Biosolids
- Biosurvey
- Bitumen Spray
- Bituminous Seal Coat
- Black Bolt
- Blanke
- Bleeding
- Blemish
- Blemished Rail
- Blind Spot
- Blinding
- Blister
- Block
- Block Indicator
- Block Joint
- Block Section
- Blocked Line
- Blocked To Electric Trains
- Blocking
- Blockwork
- Blotter
- Blueprints
- BOD
- BOD5
- Bolt
- Bond
- Bond Wire Hole
- Bonder
- Bonding Plaster
- Borate Rod Preservation
- Boring
- Borrow
- Bottom Plate
- Boulder
- Boulevard
- Bounds
- Box Gutter
- Box Section
- Boxes
- Boxing-In
- Boxing-In Ballast
- Brace
- Bracing
- Brakevan
- Branch
- Branch Line
- Brand Mark
- Breaking Out
- Bressemer
- Brick
- Brick Guard
- Brick Layer
- Brick Tie
- Brickwork
- Bridge
- Bridge bearing
- Bridge Chair
- Bridge Deck
- Bridge Gauge
- Bridge Length
- Bridge Roadway Width
- Bridge Strike
- Brittle Fracture
- Broadleaf
- Broken Rail
- Bruising
- BTU
- Bubble Diagrams
- Bucket-handle pointing
- Buckle
- Buffer Stop
- Buildability
- Building Control
- Building Inspectors
- Building section
- Building services
- Building Structure
- Buildings Codes
- Built-up
- Bullhead
- Burrowing Junction
- Buttress
C
- C Factor
- C O D
- C S O
- C-Type Bridge
- Cable AvoidanceTool
- Caisson
- Calcium Carbonate Equilibrium
- Calcium Carbonate Equivalent
- Calcium Silicate Bricks
- Calendar Day
- Calibration
- Calorie
- Camber
- Cant
- Cant Deficiency
- Cant Deficiency Gradient
- Cant Gradient
- Cant Mark
- Cantilever Beam
- Capillarity
- Capillary Action
- Capillary Effect
- Capillary Forces
- Capillary Fringe
- Capillary Pressure
- Capillary Water
- Carbonaceous Stage
- Carbonation
- Carcinogen
- Carriage Drain
- Carriage Siding
- Carriageway
- Cartographic Surveying
- Cartography
- Casement
- Cassion
- Cast Centre Crossing
- Cast Crossing
- Cast Iron
- Cast Monobloc Crossing
- Cast Vee
- Cast-In-Situ
- Catalyst
- Catalyze
- Catch Basin
- Catch Pit
- Catch Point
- Cathode
- Cathodic Protection
- Cation
- Cation Exchange Capacity
- Cationic Polymer
- Cattle Creep
- Cattle Guard
- Caulk
- Caulking
- Cavitation
- Cavity Tie
- Cavity Wall
- Ceiling
- Ceiling Joist
- Cell Test
- Cement
- Cement Mixer
- Cement Mortar
- Cementation
- Cementation Tank
- Center Line of Highway
- Centering
- Centralized Waste Treatment (CWT)
- Centrate
- Centre Bond
- Centre line Design
- Centre Line Measurement
- Centre Throw
- Centrifugal Pump
- Centrifuge
- Ceramic Veneer
- Cess
- Cess Drain
- Cess Heave
- Cesspool
- Chain
- Chain of Custody
- Chainage
- Chair
- Chair Pad
- Chair Screw
- Chamfered Switch
- Change of Section
- Change Order
- Channel
- Channel Drain
- Characteristic Strength
- Characteristics
- Charge Chemistry
- Chase
- Check Baseplate
- Check Chair
- Check Rail
- Check Rail Lubricator
- Check Valve
- Chemical Grouting
- Chemical Process
- Chevron
- Chezy-Manning Equation
- Chipboard
- Chloramination
- Chloramines
- Chlorination
- Chlorinator
- Chlorine Demand
- Chlorophenoxy
- Chord
- Christy Box
- Ciliates
- Cill
- Cill Beam
- Circle of Influence
- Circuit
- Circuit Breaker
- Circular Curve
- Circular Hollow Section
- Circular Turnout
- Circulation
- Cistern
- Civil Engineer
- Clad Arch
- Cladding
- Clamp
- Clamp Lock
- Clamp Lock Switch
- Clamp Screw
- Clamped Joints
- Clarification
- Clarifier
- Classical Orders Of Architecture
- Clay
- Cleanout
- Clear Cover
- Clear Wall
- Clear Water Scour
- Clear Well
- Clearance Point
- Cleat
- Client
- Clip Deflection
- Clipping-Up
- Closed Line
- Closed switch
- Closed Traverse
- Closing Weld
- Closure Rail
- Coagulant
- Coagulant Aid
- Coagulate
- Coagulation
- Coarse Aggregate
- Coastal Defence
- Coastal Protection
- Cobble
- Codes
- Cohesion of Soil
- Cohesionless Soil
- Cohesive
- Cohesive Soil
- Cold Expansion Of Bolt Holes
- Coliform
- Collar
- Collar Joint
- Collateral Warrantey
- Collection Main
- Collection System
- Collectors
- Colloidal
- Colloids
- Color
- Colorimetric measurement
- Column
- Combined Available Chlorine
- Combined Residual Chlorination
- Combined Residual Chlorine
- Combined Sewer
- Combined Wastewater
- Combustible Liquid
- Commencement Indicator
- Commercial Contribution
- Commercial Structure
- Comminution
- Comminutor
- Common Crossing
- Common Practices
- Common Rafter
- Common Services
- Community
- Compaction
- Compass
- Complete Treatment
- Complex Beam
- Component
- Composite Order
- Composite Weld
- Compression
- Computer-Aided Design (CAD)
- Concentric Manhole Cone
- Concrete Bearer
- Concrete Block
- Concrete Pump
- Concrete Sleeper
- Condensation
- Conduct
- Cone of Depression
- Cone of Influence
- Consolidation
- Construction Management
- Conventional Pollutants
- Conventional Treatments
- Coping
- Corbel
- Corinthian Order
- Corner Post
- Cornice
- Corporation Stop
- Corrosion
- Corrugation
- Counterfort
- Coupler
- Course
- Covenant
- Crack
- Cracked Rail
- Cradle to Grave
- Crazing
- Creep
- Crib
- Criteria
- Critical
- Critical Buckling Load
- Critical Rail Temperature
- Critique
- Cropping
- Cross Bond
- Cross Braces
- Cross Bracing
- Cross Connection
- Cross Girder
- Cross Level
- Cross-Sleepered Track
- Crossfall
- Crossing
- Crossing Angle
- Crossing Heel
- Crossing Nose
- Crossing Timber
- Crossover
- Crushing
- Culvert
- Curb
- Curb Cut
- Curb Inlet
- Curb Stop
- Curing
- Curtail Plate
- Curtain Wall
- Curvature
- Curve Length
- Curve Realignment
- Curved Planed Switch
- Curvilinear
- Cut And Fill
- Cutting
- Cycle
- Cyclic Sidewear
- Cyclic Top
- Cyclic Twist
D
- DADO
- DALTON
- Damp proof course (DPC)
- Damp Proof Membrane (DPM)
- Dampness
- Data Collector
- Datum
- Datum Line
- Datum Rail
- Day Tank
- DCP (Dynamic Cone Penetrometer)
- DDO
- Dead End
- Dead Load
- Dead-end Manhole
- Deal
- Debris
- Decanting
- Deceleration Distance
- Deciduous
- Deck
- Decommissioning
- Decomposition
- Decorative Painting
- Deed Restrictions
- Defect
- Defective Rail
- Defective Weld
- Deflection
- Deformation
- Deformed Bar
- Degree of Curve
- Delamination
- Delta Angle
- Density Index
- Departure Line
- Depth of Cut
- Derailer
- Design
- Design and Build Contract
- Design Brief
- Design Check
- Design Elements
- Design Temperature Differential
- Design Temping and Lining
- Detail Drawing
- Detailed Examination
- Detection
- Deterioration
- Determinant Beam
- Detonator Place
- Detour
- Developer
- Development
- Deviation
- Diamond Crossing
- Diaphragm
- Diatomaceous Earth
- Diazo Reproduction
- Differential Speed Restriction
- Digger
- Dilution
- Dimension
- Dipped Joint
- Dipstick
- Direct Fastening
- Disbursement
- Displays of Work
- Distillation
- Distribution Main
- Distribution Panel
- District Surveyor
- Ditch
- Divided Highway
- Doric Order
- Dormer
- Double Ended Siding
- Double Junction
- Double Parallel Wing
- Double Slip
- Double Tongue Catch Point
- Double Tongue Trap point
- Double Track
- Doubling
- Dowel
- DPD (Development Plan Documents)
- Dragon Beams
- Drain
- Drainage
- Dredging
- Dressing of Rail
- Drip Cap
- Drip Edge
- Drive Way
- Driver Only
- Drypack
- Duct
- Ductile Iron
- Ductility
- Dumpy Level
- Durability
- Dutch Hip
- Dye Penetrant Testing
- Dyke
- Dynamic Level
- Dynamic Sensors
E
- E E G L
- E-Type Bridge
- Earth Shift
- Earthing Connection
- Easement
- Eave
- Eccentric Load
- Eccentric Manhole Cone
- Ecology
- Economic Control
- Economics
- Eductor
- Effective Length
- Effective Range
- Effective size
- Effective Soil Depth
- Efficiency
- Efflorescence
- Effluent
- Effluent Limits
- Egress
- Ejector
- Elastic Spik
- Elastomer
- Elbow
- Electric Arc Weld
- Electric Meter
- Electric Railway
- Electrical Plan
- Electrical Systems
- Electrified Line
- Electrified Track
- Electro-Slag Welded
- Electrochemical Corrosion
- Electrodialysis
- Electrolyte
- Electronic Distance Measuring (EDM)
- Element
- Elements of Art
- Elevation
- Elongation Index
- Elutriation
- Embankment
- Embedded Strain Guage
- Emergency Bridging
- Emergency Clamped
- Emergency Indicator
- Emergency Speed Restriction
- Empirical Formula
- Employer
- Emulsion
- Encapsulated Fishplate
- Encroachment
- End Bond
- End Off-Loading
- End On-Loading
- End Post
- End Throw
- End Vertical Curve(EVC)
- Energy
- Energy Code
- Energy Design
- Energy Grade Line (EGL)
- Energy Resources
- Energy System
- Engineer
- Engineer Possession
- Engineer Siding
- Engineered Beam
- Engineering
- Engineering Brick
- Engineering Supervisor
- Engineering Surveying
- Engineering- Base Methodology
- English Bond
- English Garden Wall Bond
- Enteric
- Entry Angle
- Environment
- Environment Engineer
- Environmentally Friendly
- Enzymes
- Epidemic
- Epilimnion
- Epoxide
- Equalizing Basin
- Equilibrium Cant
- Equilibrium Radius
- Erosion
- Erratic
- Error
- Ester
- Estimated Flow
- Estimating
- Estuarial Defence
- Estuaries
- Ethical
- Eutrophic
- Eutrophication
- Evaporation
- Evapotranspiration
- Evergreen
- Exceedance
- Exfiltration
- Expansion Gap
- Expansion Iron
- Expansion Joint
- Expressway
- Extended Nose Block
- Extended Soleplate
- Exterior
- External Work
- Extra Work
- Extrados
- Extrapolate
- Extrusion
- Eye-Contact
F
- Fabricated Crossing
- Face Ring
- Faced Wall
- Facilities
- Facilities Management
- Facing (Direction)
- Facing Crossing
- Facing Crossover
- Facing Point
- Facing Point Lock
- Facing Switch
- Factor Of Safety
- Facultative
- Facultative Pond
- Failure
- Fall
- Falsework
- Fangbolt
- Fascia
- Fast Tracking
- Fastening
- Fatigue
- Fault
- Feasibility Study
- Feather-Edge Board
- Feeder
- Feedwater
- Ferrule
- Fettling
- Fiber Bending Stress
- Field Face
- Filamentous Organisms
- Fill
- Filler Joist Floor
- Fillet
- Fillet Radius
- Fillet Weld
- Filter Aid
- Final Design
- Fine Adjusting Screw
- Fine Aggregate
- Finish Floor
- Finished Water
- Finishes
- Fire Point
- First Fix
- Fish Bolt
- Fish Bolt Hole
- Fishplate Insulation
- Fishplate Joint
- Fishplate Lubrication
- Fissure
- Fittings
- Fixed Beam
- Fixed Costs
- Fixed Support
- Fixtures
- Flagellates
- Flakiness Index
- Flange
- Flange Cover
- Flangeway
- Flangeway Gap
- Flanking
- Flankway Wall
- Flap Gate
- Flare
- Flash Point
- Flash Welding
- Flashing
- Flat
- Flat Bottom
- Flat Crossing
- Flat Curve
- Flat-angle crossing
- Flemish Bond
- Fletton
- Flexible Pavement
- Flexure
- Flight
- Flint-lime brick
- Flitched Beam
- Float (control)
- Float Line
- Float Rail
- Float System
- Floating Foundation
- FLOC (flocculation)
- Floor
- Floor Joist
- Floor Plan
- Floor Plan Symbols
- Flow
- Flow Equalization System
- Flow Isolation
- Flow Rate
- Fluid Mechanics
- Fluidized
- Flume
- Fluoridation
- Flush Pointing
- Flusher Branch
- Flushing
- Flux
- Fly-Ash
- Flying Junction
- Foam Core Board
- Foliage
- Foot Crossing
- Foot Valve
- Footbridge
- Footings
- Force
- Force Main
- Foresight (FS)
- Form
- Formation
- Formation Level
- Formation Renewal
- Formation Work
- Formwork
- Fouling Point
- Foundation
- Foundation Failure
- Fourth Rail
- Fracture
- Frame Clamp
- Free Available Chlorine
- Free Oxygen
- Free Residual Chlorination
- Freeboard
- Freeway
- Freight Only Line
- Fretting
- Friction Buffer Stop
- Friction Loss
- Frictional Soil
- Frog
- Front Joint
- Front Stretcher Bar
- Frontage Road
- Frost
- Frost Heave
- Full Depth Switch
- Full-Screen Height
- Fully Supported Joint
- Furlong
- Fusion Welding
- FWD (Falling Weight Deflectometer)
G
- G Gage
- Gabion
- Gable
- Gage Pressure
- Gall
- Gallons Per Day
- Galvanizing
- Gambrel
- Ganger
- Gantry
- Gantry Relaying
- Garland
- Gas
- Gasification
- Gate
- Gauge
- Gauge Corner
- Gauge Corner Cracking
- Gauge Pipe
- Gauge Retention
- Gauge Spread
- Gauge Stop
- Gauge Tie Bar
- Gauge Widening
- Geodetic Surveying
- Geogrid
- Geology
- Geosynthetics
- Geotechnical Engineering
- Geotextiles
- Germicide
- Giardia
- Ginny Wheel
- Girder
- Gland
- Glass Beads
- Global Positioning System (GPS)
- Glued Insulated Joint
- Goods Line
- Gore
- Gound Frame
- GPCD (Gallons Per Capita per Day)
- GPD (Global Positioning System)
- GPM
- Gpy
- Grab Sample
- Grade Beam
- Gradient
- Grading
- Granular
- Graphitic Corrosion
- Grating
- Gravel
- Gravimetric
- Gravity Flow
- Grease Trap
- Green Roof
- Green Space
- Greensand
- Grid
- Grillage Pump
- Grit Catcher
- Grit Chamber
- Grit Channel
- Grit Tank
- Grit Trap
- Grooving
- Ground
- Groundwater
- Groundwater Depth
- Groundwater Elevation
- Groundwater Lowering
- Groundwater Table
- Groundwork
- Group
- Grout
- Grouted Masonry
- Grouting
- Guard
- Guard Rail
- Guarding
- Gully
- Gunite
- Gussett
- Gutter
H
- H-Section
- Hairline Crack
- Half Chord
- Half Set
- Half Timbered
- Hallow Masonry Unit
- Hallow Wall
- Hammerebeam Roof
- Hand Back
- Hand Lever
- Hand of a Crossing
- Hand of a Switch
- Hand of Curve
- Hand Point
- Hand Rail
- Hand Rod
- Hand signals
- Handhole Trap
- Handover
- Handrail
- Hang-Plank Floor
- Hanging Sleeper
- Hard Water
- Hardness
- Hardwood
- Hardwood Sleeper
- Haunch
- HCAM
- Head Loss
- Header
- Header Bond
- Health And Safety Control
- Health And Safety Planning
- Hearth
- Heat Affected Zone
- Heat Loss
- Heat Treated Rail
- Heater Pad
- Heating Degree Days
- Heave
- Heckling
- Hedge
- Heel
- Heel Baseplate
- Heel Block
- Heel Joint
- Heel Of Planing
- Heel Of Transition
- Height of Instrument (HI)
- Hepatitis
- Herbicides
- Heterotrophic
- High Carbon Austenitic Manganese Steel
- High Rail
- High Spot
- High Strength Friction Grip Bolt
- High Tensile Steel
- High-Grade Steel
- High-Line Jump
- High-Velocity Cleaner
- Highway
- Highway Authority
- Hip
- Hipped Roof
- Hod
- Hod Carrier
- Hogging
- Hoist
- Holding Down Bolt
- Holding Pond
- Holding Siding
- Hollobolt
- Hollow Brickwork
- Hollow Section
- Hollow Spandrel
- Home Signal
- Honeycomb Brickwork
- Honeycombing
- Horizontal Alignment
- Horizontal Curve
- Horizontal Defect
- Horizontal Orientation
- Horizontal Shear
- Hose Bib
- Hot Axle Box Detector
- Hot Tapping
- Hot Weather Patrolling
- Housing
- Humus Sludge
- Hunting
- Hydrate Lime
- Hydration
- Hydraulic Block
- Hydraulic Cement
- Hydraulic Detention Time
- Hydraulic Grade Line (HGL)
- Hydraulic Gradient
- Hydraulic Jump
- Hydraulic Loading
- Hydrogeologist
- Hydrographic surveying
- Hydrologic Cycle
- Hydrology
- Hydrolysis
- Hydrophilic
- Hydrophobic
- Hydropneumatic
- Hydrostatic Pressure
- Hydrostatic System
- Hydroxide Precipitation
- Hygroscopic
- Hypochlorinators
- Hypochlorite
- Hypolimnion
I
- I-Section
- Imhoff Cone
- Immiscible
- Impact Loads
- Impedance Bond
- Impeller
- Imperial System
- Impermeable
- Impervious
- Imported Backfill
- Imposed Load
- Impurity
- In Advance Of
- In Rear Of
- In-Line Filtration
- Incineration
- Inclined Design Switches And Crossing
- Inclined Rail
- Indentation
- Indeterminant Beam
- Indigenous
- Industrial Wastewater
- Infiltrated Debris
- Infiltration
- Infiltration Head
- Inflatable Pipe Stopper
- Inflow
- Influent
- Infrastructure
- Ingress
- Inherent Settlement
- Initial Setting Time
- Injector Water
- Inlet
- Inorganic Waste
- Input Horsepower
- Insecticide
- Insertion Puller
- Inset Switch
- Inside Keyed Chair
- Insituform
- Inspection Sleeper
- Insulated Fishplate
- Integrity
- Intercepting Drain
- Intercepting Sewer
- Interceptor
- Interference Settlement
- Interlaced Track
- Interlocking
- Intermediate Block Section
- Intermittent Sidewear
- Internal Flow
- Internal Rail Flaw
- Interpolation
- Intersection Bridge
- Interstice
- Interval
- Intrados
- Introduction
- Invert
- Inverted Siphon
- ION Exchange
- ION Exchange Resins
- IONIC Concentration
- Ionic Order
- IRJ
- Iron
- Iron And Steelwork
- Irrigation
- Island Platform
J
K
L
- Labourer
- Lacing
- Laitance
- Laminar flow
- Laminated Strand Lumber (LSL)
- Lamp Hole
- Lamping
- Land Severance
- Land Surveying
- Landscape Design
- Landscape Horticulturist
- Landscaping
- Landslip
- Langelier Index (L.I.)
- Lap
- Laser Dozing
- Lateral
- Lateral Break
- Lateral Cleanout
- Lateral Loads
- Lateral Resistance
- Lateral Resistance End Plate
- Lateral Sewer
- Lath
- Launder
- Laundering Weir
- Launders
- Laying-In
- Layout
- LCAM ( Life Cycle Assessment of Construction Materials)
- Lead
- Lean Concrete Base (LCB)
- Least Squares
- Ledge
- Left Hand Parallel Wing
- Left-Hand Splice
- Left-hand turnout
- Leg End
- Legal Description
- Lending Institution
- Level Control
- Level Crossing
- Leveling
- Leveling Base
- Leveling Rod
- Lever
- Lewis
- Lift Fishplate
- Lift Pit
- Lift Station
- Lime
- Lime Mortar
- Limit State
- Line of Sight (LOS)
- Line Speed
- Line Under Possession
- Lined Arch
- Lineside
- Lineside Fencing
- Lintel
- Lipophilic
- Liquefaction
- Liquid limit (LL)
- Liquid Vehicle
- Liquidated Damages
- Littoral zone
- Live Load
- LLantarnam Type bridge
- Lloyd Davies Formula
- Load Bearing
- Load Factor
- Load Gauge
- Loading Dock
- Local Authority
- Local Earth
- Local Manager
- Long Column
- Long Span
- Long-wavelength
- Longitudinal Change Of Section
- Longitudinal Timber
- Lookout
- Loose Sleeper Relaying
- Loss Of Prestress
- Loss Of Toe Load
- Lot
- Lot Size
- Low Rail
- Low-carbon austenitic Manganese Steel
- Lower Flammable Limit (LFT)
- Luminaire
- Lump Sum Contract
- Lysimeter
M
- Macronutrients
- Mail Line
- Main Aspect
- Main Sewer
- Maintenance
- Maintenance Management
- Maintenance Project
- Major Repairs
- Management
- Management Contract
- Management Contractor
- Management Technique
- Manager
- Manhole
- Manhole Bedding
- Manhole Depth
- Manifold
- Manned Level Crossing
- Manometer
- Mansard Roof
- Manually Controlled Barrier
- Marshalling Yard
- Marshes
- Masonry
- Mass Concrete
- Mat Foundation
- Materials Management
- Maul
- Maximum Dry Density
- Maximum Permissible Speed
- Mean Cell Residence Time (MCRT)
- Mechanical Points
- MED
- Membrane
- Mesh
- Mesophilic Bacteria
- Mesotrophic
- Metabolism
- Method Statement
- Methoxychlor
- MGY
- Micaceous
- Micro screen
- Microbial Growth
- Micron
- Micronutrient
- Mineral
- Miniature Red
- Miniature Warning Lights
- Minimum Action
- Minimum Ballast Depth
- Minimum Flangeway
- Minimum Rail Depth
- Minor Repair
- Misalignment
- Miscible
- Mist
- Mix
- Mixed Liquor
- Mixed Liquor Suspended Solids (MLSS)
- Mixed Liquor Volatile Suspended Solids (MLVSS)
- Mobile Crane
- Mock Tudor
- Model
- Modulus Of Elasticity
- Moisture Content
- Molarity
- Mold
- Moment
- Monolithic Construction
- Monomictic
- Mortar
- Motile
- Moulding Pin
- Movable Length
- Movement Joint In Concrete
- Mudballs
- Mulch
- Multi-family
- Multi-Stage Pump
- Multi-Strike Pump
- Multiple Track
- Municipality
- Muntin
- Mutagenic
- MWL
N
- NAD 27
- National Geodetic Survey (NGS)
- Natural Crossing
- Natural Turnout
- Negative Cant
- Negative Moment
- Negotiated Contract
- Neoprene
- Net Wastewater Contribution
- Net Wastewater Flow
- Neutral Surface
- Neutralization
- New Rail
- Newel
- Newel Post
- Newton
- Nipple
- Nitrification
- Nitrifying Bacteria
- Nitrogenous
- No Block Line
- Node
- Noggin
- NOM (Natural Organic Matter)
- Non biodegradable
- Non Potable
- Nonbearing Wall
- Noncompatible
- Nonpoint Source
- Nonvolatile Matter
- Normal Grade Group
- Normal Grade Rail
- Nose To Intersection
- Nosing
- Novation
- Nucleus
- Nutrient
- Nutrient Cycle
O
- Obligate Aerobes
- Obtuse Crossing
- Occupation Bridge
- Occupation Crossing
- Occupied
- Off-Track Work
- Off-tracking equipment
- Offset
- Olfactometer
- Olfactory Fatigue
- Oligotrophic
- On The Linesid
- On-Line Report
- On-Track Machine
- On-Track Plant
- One Train Working
- One Way Lever
- Open Crossing
- Open Joint
- Open Standpipe
- Open Switch
- Opening Out
- Operational Railway
- Operations Control
- Opposite Flexure
- Optimum Moisture Content
- Ordinary Datum (OD)
- Ordnance Survey
- Organic Waste
- Oriel Window
- Orifice
- ORP
- Orthotolidine
- Osmosis
- Out Of Gauge
- Outfall
- Outfall Sewer
- Outside Edge
- Outside Party
- Overall Efficiency
- Overbridge
- Overburden
- Overdraft
- Overflow Manhole
- Overhanging Beam
- Overhead Line
- Overlap
- Overlay
- Overriding Switch
- Overshot Curve
- Overturn
- Overview
- Owner
- Oxidation Ditch
- Oxidation-Reduction Potential (ORP)
- Oxidizing Agent
- Oxygen Deficiency
- Oxygen Enrichment
- Ozonation
P
- P and Z Board
- Packing
- Padstone
- Panel Box
- Parachute
- Parallel Flange Channel
- Parallel Wing Extension Rail
- Parallel Wing Rail
- Parapet
- Parasitic Bacteria
- Pargetting
- Parkway
- Parshall Flume
- Part Fabricated Crossing
- Part Welded Crossing
- Particle Board
- Particular Asset
- Particulate
- Partition
- Party Wall
- Passing Clearance
- Passing Loop
- Passive Pressure
- Patch Resleepering
- Pathogenic Organisms
- Pathogens
- Patress plate
- Patrolling
- Pave Tech Van Vehicle
- Paved Concrete Track
- Pavement Structure
- Pea Shingle
- Peaking Factor
- Pearlitic Steel
- Peat
- Pebbles
- Pedestal
- Pedestal Bearing
- Peer Evaluation
- Peer Review
- Peiezo Accelerometer Sensor
- Percolating Water
- Percolation
- Perforated
- Periphyton
- Permanent Speed Restriction
- Permanent way
- Permeability
- Permeate
- Permissible Speed
- Permissible Stress
- Person In Charge Of The Possession
- Person In Charge Of Work (PICOW)
- Perspective Drawings
- PH
- PH Test Paper
- PH Value
- Phenol
- Phenolic Compounds
- Phenolphthalein Alkalinity
- Photogrammetry
- Photosynthesis
- Physical Wastewater Process
- Phytoplankton
- Pico
- Picocurie
- Picture Frame
- Piecemeal Layout
- Piecemeal Relaying
- Pier
- Pier Cap
- Pier Shaft
- Piezometer
- Pilaster
- Pile
- Pile Cap
- Pile Driver
- Pile Foundation
- Piling
- Piling Rig
- Pin Support
- Pipe Liner
- Piping
- Pit
- Pitch
- Pitched Roof
- Pitching
- Pitot Tube
- Plagiarism
- Plain Line
- Plain rail
- Plan
- Planing Length
- Planing Radius
- Plankton
- Planning
- Plans
- Plant Rail
- Plaster
- Plasterboard
- Plastic Limit
- Plasticity
- Plasticity Index (PI)
- Plasticizer
- Plat
- Platable
- Platform
- Platform Furniture
- Platform Gauge
- Platform Line
- Platform Nosing
- Platform Ramp
- Platy
- Plot
- Plot Plan
- Plug
- Plumb
- Pneumatic Ballast Injection Machine
- Pocketed Formation
- Point Dimension
- Point Of Beginning ((POB)
- Point Of Curve (P.C.)
- Point Of Intersection (P.I.)
- Point Of Reference (POR)
- Point Of Tangency (PT)
- Point rail Nose
- Point Rail Set
- Point Wing Rail
- Pointing
- Points Run Through
- Poling Board
- Pollutant
- Pollution
- Polychlorinated Biphenyls
- Polymers
- Polyvinyl Chloride (PVC) Pipe
- Ponding
- Poorly Graded
- Porcupine
- Pore
- Pore Water Pressure Gauge Sensors
- Porosity
- Portable Automatic Warning System
- Portfolio
- Portland Cement
- Position Safety
- Positive Cant
- Positive Pressure
- Post Stressed Concrete
- Postchlorination
- Pot Sleeper
- Potable Water
- Pound
- Power Oriented Point
- Pre-Aeration
- Precast Concrete
- Prechlorination
- Precipitate
- Precision
- Precursor
- Prefabricated Relaying
- Premature Renewal Of Track
- Pressure
- Pressure Pipeline
- Prestressed Concrete
- Prevailing Winds
- Price Contract
- Prime Coat
- Principles Of Design
- Prism
- Private Force Main
- Property Owners
- Proportion
- Propped Beam
- Protection
- Protractor
- Psychrophilic Bacteria
- Public Water System
- Publicly Owned Treatment Works (POTW)
- Pugging
- Pull Force
- Pulverized Fuel Ash
- Pump
- Pump Station
- Pumping
- Purge
- Purlin
- Putlog Or Putlock
- Putrescible
- Pyrometer
R
- R A S
- R-Value
- R/G
- Rack
- Rafter
- Rail
- Rail Adjusting
- Rail Anchor
- Rail Bearer
- Rail Creep
- Rail Defect
- Rail End
- Rail Failure
- Rail Fastening
- Rail Fastening Syetem
- Rail Flaw
- Rail Foot
- Rail Foot Insulator
- Rail Gall Of Baseplate
- Rail Grinder
- Rail Head
- Rail Inclination
- Rail Joint
- Rail Joint Bond
- Rail Level
- Rail Lubricator
- Rail Mounted Maintenance Machine
- Rail Pad
- Rail Profile
- Rail Seat
- Rail Section
- Rail Support System
- Rail Tensors
- Rail Testing System
- Rail Turning
- Rail Web
- Railtrack Controlled Infrastructure
- Railway
- Railway Fog Signal
- Raised Check Rail
- Ramp
- Random Sample
- Rankine Theory
- Rate Of Change Oft Cant
- Ravine
- Raw Water
- Ready-Mixed Concrete
- Reaeration
- Realignment
- Reasonably Practicable
- Reballasting
- Recarbonation
- Recessed Pointing
- Recharge Rate
- Reclamation
- Rectangular Hollow Section
- Retaining Wall
- Retarder
- Retention
- Return Activated Sludge (RAS)
- Returned Ballast
- Reverse Curve
- Reverse Point
- Rhythm
- Ridge
- Right-Of-Way
- Rigid Pavement
- Rigidity
- Ring Dam
- Riprap
- Rise
- Riser
- Rising Damp
- Rising Sludge
- Rivet
- Road-Rail Vehicle
- Roadbed
- Roadway
- Rolled Steel Joist ( RSJ)
- Roller Support
- Rolling Contact Flaw
- Roof Leader
- Roof System
- Root Sewer
- Rotary Pump
- Rough Arch
- Rough Opening
- Route Availability
- Routine Observation
- Rubbing Face
- Rubble
- Ruling Gradient
- Rumble Strip
- Run-Through
- Running Band
- Running Edge
- Running Junction
- Running Rail
- Running Surface
- Running Table
- Runoff
- Rustication
- Rutting
S
- S & C
- Sacrificial anode
- Saddle
- Safe water
- Safe yield
- Safety audit
- Safety case
- Safety check
- Safety Critical Work
- Sagging moment
- Sales contract
- Salinity
- Salt
- Sand
- Sand drag
- Sand equivalent
- Sand trap
- Sand-Lime Brick
- Sanitary sewer
- Saprophytes
- SAR (Sodium Adsorption Ratio)
- Sash
- Sash window
- Saturated Surface Dry (SSD)
- Saturation
- Scaffold
- Scale
- Scarf
- Scissors Crossover
- Screed
- Screen
- Screw
- Sea Defence
- Secant Piles
- Sections
- Sediment
- Seed Sludge
- Seismic
- Select Bedding
- Semi-Welded Crossing
- Septage
- Septic Tank
- Service entrance panel
- Serviceable Sleeper
- Setback
- Sewer
- Sewer Cleanout
- Shake
- Shallow Depth Switch
- Shear or shear force
- Shed
- Shovel Packing
- Signal Post Replacement Key
- Significant Figure
- Sill
- Similar Flexure
- Simplified bidirectional signaling (SIBIDS)
- Single Tongue Catch Point
- Siphon
- Site
- Site Co-ordination
- Site Location
- Site Management
- Site Manager
- Site Plan
- Site Warden
- Site Work
- Sizing
- Skatole
- Sketch
- Skew Bridge
- Skew Span
- Skew-Back
- Skirted Fishplat
- Skirting
- Slab
- Slab Track
- Slag
- Slag Cement
- Slaking
- Sleeper
- Sleeper Wall
- Slip-Form
- Sliplining
- Sludge Density Index (SDI)
- Sludge Volume Index (SVI)
- Slugs
- Sluing
- Slump
- Slurried Ballast
- Smoke Plate or Board
- Smoke Testing
- Smooth Lining
- Soaker
- Soap Cake or Soap buildup
- Soffit
- Soffit Pad
- Soft Sand
- Soft Water
- Softwood Sleeper
- Soil
- Soil Displacement
- Soil Masonry Unit (SMU)
- Soil Mechanics
- Soil percolation test
- Soil PH
- Soil Pipe
- Soil Pollution
- Soil Pressure Gauge
- Soil Stabilization
- Soil Stack
- Solar Orientation
- Soldier
- Soldier Pile
- Sole Plate
- Solids Concentration
- Soluble Bod
- Solvent Extraction
- Sorting Siding
- Sound Orientation
- Sounding Rod
- Sounding Tube
- Space Allocation
- Space Planning
- Spalling
- Spandrel
- Spandrel Wall
- Spatial Relationship
- Special (Brick)
- Special Foundation
- Specific Gravity
- Specific Yield
- Splice
- Squint
- SSD (Saturated Surface Dry)
- Stagnant water
- Stain
- Stasis
- Statics
- Station
- STC (Sound Transmission Class)
- Steel
- Sterilization
- Stitching
- Storm Drain
- Storm Runoff
- Stormwater Retention Area
- Straight Cut Switch
- Strain
- Strap
- Structural Steelwork
- Struvite
- Surcharge Manhole
- Switch Diamond
T
- T & G, tongue, and groove
- T bar
- Tamper Siding
- Tandem
- Tandem Roller
- Tangent Line
- Tangential Switch
- Taping
- Telescope Level
- Temperature Steel
- Temperature Stress
- Tempered
- Temporary Bench Mark
- Tension
- Termites
- Terracotta
- Test Boring
- Texture
- Theodolite
- Thermocline
- Thermohygrograph
- Thermophilic Bacteria
- Thermostat
- Thickening
- Three-dimensional shingles
- Threshold
- Timber
- Time and materials contract
- Toenailing
- Top chord
- Transmitter (garage door)
- Trap
- Tread
- Treated lumber
- Tree Canopy
- Tripod
- Truss
- Trussed Rafters
- Tuberculation
- Tunnel
- Tunnel Shaft
- Turbidity
- Turbulent Mixers
- Turfing
- Turnkey Project
- Turnout
- Tuscan Order
- Tusk Tenon Joint
- Twist
- Twist Fault
- Twist Rail
- Two Level Baseplat
- Two Way Lever
- Two-stage filters
- Two-Stage Tender
- Two-Way Cleanout
U
V
- V-Notch Weir
- Vac-All
- Valley
- Valuation
- Vanity Unit
- Variation
- Varied Flow
- Vault
- Vellum
- Veneered Wall
- Vent Stack
- Verge
- Vermiculite
- Version
- Vertical Alignment
- Vertical Curve
- Vertical Orientation
- Viability Analysis
- Viable
- Viaduct
- Vibrations
- Vibrator
- View Orientation
- Viscosity
- Visual Examination
- Visual Inspection
- Void
- Volatile
- Volatile Acids
- Volatile Liquids
- Volatile Solids
- Volt
- Volumetric
- Volumetric Feeder
- Volute
- Vortex
- Voussoir
W
- W.R. Box Girder Bridge
- Waistline Cleanout
- Wale
- Walers
- Wall
- Wall Section
- Wane
- Warp
- Warping
- WAS ( wastewater and sewage)
- Waste Treatment Engineering
- Wasteline Vent
- Wastewater
- Wastewater Collection System
- Wastewater Facilities
- Wastewater Treatment Plant
- Water Adult
- Water Cycle
- Water From Domestic Use
- Water Hammer
- Water Lance
- Water Table
- Water Vapour
- Watershed
- Waybeam
- Wear-resistant rail
- Weather
- Weatherhead
- Web
- Weep Hole
- Weight
- Weir
- Weir Loading
- Weld Shear
- Weld Zone
- Welded Bond
- Well Isolation Zone
- Well Log
- Well Protection Area
- Well-graded
- WellPoint
- Wet Oxidation
- Wet spot
- Wetted Perimeter
- Wheel Burn
- Wheel Flange
- Wheel Flange Lubricator
- Wheel Impact Detector
- Wheel Timber
- Wheel Transfer Area
- Wholesome Water
- Wide Gauge
- Wideway
- Wind Break
- Wind Load
- Wind Orientation
- Winders
- Wing Rail Fron
- Withe
- Woodscrew
- Work Site
- Workability
- Worked Point
- Working Drawing
- Working Temperature
- Wrinkle
- Wrong Direction
- Wrong Side Failure
- Wye Strainer
- Wythe