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Trenchless Technologies
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Footermenu2
- Upcoming No-Dig International
- Photogallery -Trenchless International
- Glossary
- A
- Access shaft
- Adaptability
- Adit
- Advance
- Advance2
- Advance heading
- Advance Path
- Aggressive Cleaning
- Aggressive Flushing
- Air Scouring
- Annular Filler
- Annular Space
- Articulated Head
- At-grade
- Auger Boring
- Auger Boring2
- Auger TBM
- Acceptable Quality Level (AQL)
- Access
- Adjusting Construction
- Air Valve
- Anaerobic
- Anchor bolt
- Arch
- Arch ribs
- Assessment (or evaluation) of projects
- Asset Life Expectancy
- Audit Test
- Absorption
- Acid
- Acidic deposition
- Acre-foot (acre-ft.)
- Adsorption
- Advantage
- Aerate
- Aerobic
- Aerobic2
- Aesthetic Pollution
- Aesthetic Water Quality
- Air pollution
- Algae
- Algal bloom
- Alkaline
- Alluvial aquifer
- Alluvium
- Alpine snow glade
- Amalgamation
- Ammonia
- Anadromous fish
- Ancillary
- Anomalies
- Anthropogenic
- Anticline
- Aquaculture
- Aquatic
- Aquatic guidelines
- Aquatic-life criteria
- Aquifer
- Armour
- Arroyo
- Artificial cavern
- Artificial recharge
- Aseismic design
- Assembly
- Atmospheric deposition
- Atmospheric pressure
- Average discharge
- B
- Back grouting / Contact grouting
- Back Reamer
- Back up equipment (of a tunnelling machi
- Backdrop Manhole
- Backfill
- Bent Sub
- Bentonite
- Bore
- Branch (of a sewer network)
- Breakdown Maintenance
- Background Concentration
- Bacteria
- Base Flow
- Batch
- Batch Release Test
- Bed material
- Bedrock
- Benching
- Benefit-cost ratio
- Best management practice (BMP)
- Biochemical process
- Blind Shield
- Bored construction
- Box (shape)
- Brittle Failure
- Bulkhead (1)
- Bulkhead (2)
- Butt-Ended
- Back
- Backwater
- Backwater Level
- Bank
- Bank storage
- Barrier bar
- Barrier beach
- Basement
- Basic
- Basic Fixed Sites
- Basin
- Basin and Range Physiography
- Bed sediment
- Bed sediment and tissue studies
- Bedload
- Bench
- Benefit
- Benthic invertebrates
- Benthic organism
- Berlin System
- Bind
- Bioaccumulation
- Bioavailability
- Biochemical
- Biochemical Oxygen Demand (BOD)
- Biodegradation
- Biomass
- Biota
- Blast (explosive)
- Blasting effects
- Blasting pattern
- Blowout
- Blue-baby syndrome
- Bog
- Bolson
- Boreal
- Boring
- Bosque
- Bottom land
- Bottom-land forest
- Brackish water
- Braided stream
- Breakdown product
- Brine
- Building permit (permission)
- Built areas
- C
- Carrier Pipe
- Cased Bore
- Cased Bore2
- Casing Pipe Method
- Casting
- Caulking
- CCTV
- CCTV Surveying
- Chamber
- Chamber Unit
- Chemical grout / injection
- Chemical Grouting
- Chemical Stabilisation
- Cleaning Ball
- Close-Fit
- Continuous Sliplining
- Conventional Trenching
- Crossing
- Crown
- Crush Lining
- Cured-In-Place Pipe (CIPP)
- Cut and Cover (construction, method)
- Cutterhead
- Cutting Head
- Cutting/Cutter Head
- Casing
- Caisson Shaft
- Can
- Categorisation
- Cathodic Protection
- Cess Pit
- Characteristic
- Closed shield
- Closed Shields
- Combined Sewer
- Combined Sewer Overflow
- Compensation Grouting
- Compliance
- Compressed Air Method
- Concrete
- Cone Penetration Test
- Consequence Of Failure
- Construction cost
- Continuous Survey
- Control Section
- Conventional Shields
- Conventional Tunnelling
- Convergence
- Core Sample
- Correlation
- Corrosion 'Hotspots'
- Cost effective
- Cost of a project
- Cost-Benefit Analysis (study)
- Cover
- Cracks
- Criteria
- Criterion
- Critical Sewers
- Crude Sewage Discharge
- CSO
- Calcareous
- Caldera
- Calibration
- Canopy (of tunnelling machine)
- Canopy angle
- Capillary fringe
- Carbonate rocks
- Case history
- Casting basin
- Catastrophic Rainfall Event
- Catchment Area
- Cellar
- Center pivot irrigation
- Certification Body
- Cess Pool
- Channel scour
- Channelization
- Chlordane
- Chlorinated solvent
- Chlorofluorocarbons
- Chrysene
- Cienaga
- Circular shape
- Circumneutral
- Cirque
- Civil defence / protection
- Clastic
- Clayware
- Climate
- Coast Care
- Coastal Wastewater Outfall
- Cohesion (of soil)
- Collapse
- Commercial Withdrawals
- Community
- Compressed air
- Compressed air shield
- Compressive strength
- Concentration
- Concession
- Conduit
- Cone of depression
- Confined Aquifer (artesian aquifer)
- Confinement
- Confining layer
- Confluence
- Conglomerate
- Conservation
- Constituent
- Construction methods
- Consumptive Use
- Contact Recreation
- Contaminants
- Contamination
- Contract
- Contractor
- Contributing Area
- Conventional Excavation
- Conveyor
- Cooling
- Coral Reef
- Cracking
- Crystalline Rocks
- CSD
- Cubic Foot Per Second (ft3/s or CFS)
- Cutter
- Cutter Consumption
- Cutter Spacing
- Cutting Tool
- CWO
- Cyclone
- Cypress Dome
- D
- Dam Board
- Directional Drilling
- Discrete Sliplining
- Drought
- Dry Bore
- Damage Limitation
- Decision maker
- Declared Value
- Design
- Deviation
- Diaphragm wall
- Distribution Main
- Drain
- Drain System
- Dredging
- Drill and Blast
- Drill Bit/Head
- Drill Jumbo
- Drill String/Stem
- Drillability
- Drilling Fluid/MUD
- Drinking Water Standard or Guideline
- Drive Pit
- Drive/Entry/Shaft/Pit
- Dangerous Occurrence
- Datum plane
- DDT
- Deciduous
- Decompressed Zone
- Deepwater Habitat
- Deformation
- Deformation2
- Degradation Products
- Degraded
- Delay
- Delta
- Denitrification
- Deposition
- Depression Storage
- Detect
- Detection Limit
- Detention Tank
- Dewater
- Dewatering
- Diatoms
- Dieldrin
- Direct advantage
- Direct runoff
- Disadvantage
- Disc
- Disc cutter
- Disc cutter with carbide ); INSERTs
- Discharge
- Discharge Area (ground water)
- Discolouration
- Discrete Inspections
- Dispersion
- Dispute Resolution
- Dissected
- Dissolved Constituent
- Dissolved oxygen
- Dissolved solids
- Diversion
- Division, Isolation, Separation of Commu
- Dolomite
- Domestic Wastewater:
- Domestic Withdrawals
- Dominant Plant
- Drainage
- Drainage Area
- Drainage Basin
- Drainage Channel
- Drainage Divide
- Drainage Service
- Drawdown
- Drift
- Drilling
- Drip Irrigation
- Dry Weather Flow:
- Dry Well
- Duty Point
- E
- Earth Piercing
- Epoxy Resin Lining
- Exfiltration
- Expander
- Earth Pressure Balance
- Earth Pressure Balance (EPB) Machine
- Earth Pressure Balance (EPB) Shield
- Element
- Employing Authority
- Entry/Exit Angle
- Environmental Factors
- Environmental Impact Assessment (EIA)
- EPB
- Erector Arm
- Erosion
- Exit Portal(of a tunnel)
- Exploratory Adit
- Extraneous Water
- Extraordinary Stresses
- Eye
- Ecological Studies
- Economic Good
- Economic Players
- Ecoregion
- Ecosystem
- Effect on water table
- Effluent
- Egg Shape
- Element2
- Elephant's Feet
- Emergency Service
- Emergent Plants
- Endangered Species
- Endocrine System
- Energy
- Entrance Portal
- Environment
- Environment2
- Environment Agency
- Environment Conditions
- Environmental Compliance
- Environmental Framework
- Environmental Sample
- Environmental Setting
- Ephemeral Stream
- EPT Richness Index
- Equal Width Increment (EWI) Sample
- Estuarine Wetlands
- Estuary
- EU
- Eutrophication
- Evaluation of Tenders
- Evaporation
- Evaporite Minerals (deposits)
- Evaporites
- Evapotranspiration
- Event (Rainfall)
- Excavating Bucket
- Excavation
- Exotic Species
- Explosion Proof
- Explosive
- External Effect / Cost
- Extrados
- F
- Ferro-Cement
- Fluid Assisted
- Flushing
- Foam Swabbing
- Fold & Form Lining
- Foul Sewer
- Foul Water
- Free Boring
- Fabrication
- Face
- Face2
- Face Stability
- Failure Frequency
- Flooding
- Flow Attenuation
- Flow Balancing
- Flow Reduction
- Flow Simulation
- Flow Survey (Sewers)
- Full Face Heading
- Full Wall Graphitisation (FWG)
- Fall line
- Fallow
- Fault
- FDA Action Level
- Fecal Bacteria
- Fecal Coliform
- Fen
- Fertilizer
- Filtrate
- Financial Return
- Fire Safety
- Firm Ground
- Fish Community
- Fissured Rock
- Fixed Sites
- Flood
- Flood Attenuation
- Flood Irrigation
- Flood Plain
- Flow Line
- Flowpath
- Fluid Jet Cut
- Fluvial
- Fluvial Deposit
- Flyway
- Forepoling (Spilling)
- Formula A
- Formwork
- Fractures
- Freezing
- Freshwater
- Freshwater Chronic Criteria
- Friable
- Friction Coefficient
- FSR
- Full Face Tunnelling Machine
- Fumigant
- Furrow Irrigation
- G
- Ground Probing Radar (GPR)
- Grouting
- Guided Auger Boring
- Guided Drilling
- Gallery
- Gasket
- General Survey
- Generic
- Girder or Rib (lattice)
- Grade
- Graphitic Corrosion Product (GCP
- Gravity System
- Gripper System
- Ground Arch
- Ground Usage
- Groundwater
- Group
- Grout
- Grouted Foundation Bed
- Guide Rail
- Gully
- Gage Height
- Gaging Station
- Gathering Arm
- Geologic Exploration
- Geomapping
- Geomorphic
- Geomorphology
- Geophysical Investigation
- Geothermal
- Glacial
- Glacial Drift
- Glacial Lake
- Glacial Outwash
- Grab
- Grade Level
- Grade Separation
- Gradient
- Granite/Granitic Rock
- Graving Dock
- Greenfield Site
- Gripper
- Gross Solids
- Ground Conditions
- Ground Treatment
- Groundwater Flow System
- Growing Season
- Guidance System
- Guided Boring
- Guidelines for design
- H
- Horizontal Directional Drilling (HDD)
- Hoselining
- Heading
- Hoist
- Hydraulic Capacity
- Hydraulic Conductivity
- Hydraulic Gradient
- Hydraulic Head
- Hydraulic Performance
- Hydrostatic Pressure
- Hydraulic Radius
- Habitat
- Hardness
- Hardpan
- Haulage
- Haveuse
- Hazard
- Headwaters
- Health Advisory
- Heaving
- Herbaceous
- Herbicide
- Horseshoe Shape
- Human Health Advisory
- Humbercare
- Hydraulic Analysis
- Hydraulic Mucking
- Hydric Soil
- Hydro-Biological Stress
- Hydrogen Sulphide
- Hydrogeology
- Hydrograph
- Hydrologic Cycle
- Hydrologic Regime
- Hydrologic Unit
- Hydrology
- Hydrophobic
- Hydrophyte
- Hyetograph
- I
- Impact Moling
- Impact Ramming
- In Line/On Line Replacement
- Independent Lining
- Independent Pressure Pipe Liner
- I Stage
- Impact Study
- In Situ Testing
- Inclinometer
- Incompetent ground
- Indirect Test
- Infiltration
- Infiltration/Inflow (I/I)
- Inflow
- Infrastructure
- Inherent Scatter
- Initial Type Testing
- Inspection Techniques
- Installation
- Intensity Of Study
- Interactive Lining
- Interactive Pressure Pipe Liner
- Interjack Pipes
- Interjack Station
- Intermediate Jacking Method
- Intermediate Jacking Method2
- Intermediate Jacking Station
- Intermediate Station Jacking (IJS)
- Internal Inspection
- Intrados
- Invert
- Invert2
- Inverted Siphon
- Investment
- Igneous rocks
- Immersed Tube
- Immersion
- Immobilize
- Impaired
- Impermeability
- Impermeable Surface (impervious)
- Impervious
- Impervious Ground
- In Situ Concrete
- Index of Biotic Integrity (IBI)
- Indicator Sites
- Indirect Advantage
- Indurated
- Industrial Discharge
- Industrial Withdrawals
- Inland Wastewater Outfall
- Inlet
- Inorganic
- Inorganic Soil
- Insecticide
- Inside shape
- Inspection
- Instantaneous Discharge
- Instantaneous penetration rate
- Instream Use
- Instrument Calibration Checks
- Integrated Drainage
- Integrator or Mixed-use site
- Intensive Fixed Sites
- Interface
- Intermittent Stream
- Intermontane
- Internal Drainage
- Internal friction
- Intertidal
- Intolerant organisms
- Invert segment
- Invertebrate
- Investigation
- Investigation drilling
- Ion
- Irrigation
- Irrigation District
- Irrigation Return Flow
- Irrigation Withdrawals
- IWO
- J
- K
- L
- Lining
- Lining Pipe
- Lining System
- Lining With Close-Fit Pipes
- Lining With Continuous Pipe
- Lining With Cured-In-Place Pipes
- Lining With Discrete Pipes
- Lining With ); INSERTed Hose
- Lining With Pipe Segments
- Lining With Spirally Wound Pipes
- Live ); INSERTion
- Localised Repair
- Landing
- Lateral
- Lateral Inflow
- Laterals
- Launch Pit
- Lead Pipe
- Life Cycle
- Life Cycle Cost
- Limiting Quality
- Location
- Locator
- Long Term Planning Horizon
- Lot
- Low Load Method
- Lubrication
- Laboratory Test
- Lacustrine
- Lacustrine Wetlands
- Lagging
- Lagoon
- Land Use Study
- Latent Heat
- Lateral Moraine
- Leachate
- Leaching
- Leakage
- Life Zone
- Limestone
- Limnetic
- Liner
- Littoral
- Load
- Loading
- Loading Conveyor
- Loading Hopper / Pan
- Loess
- Long Term Monitoring
- Loosening (of rock)
- M
- Mechanical Props Repair
- Microtunneller
- Microtunnelling
- Mini-Horizontal Directional Drilling
- Modified Sliplining
- Mole
- Mole Ploughing
- M Stage
- Mains Rehabilitation
- Maintenance
- Maintenance Cost
- Manhole
- Manual Mechanical Shield
- Material Batch or Compound Batch
- Material Type
- Maximum Contaminant Level (MCL)
- Mean Outside Diameter
- Mean Wall Thickness
- Measurement While Drilling (MWD)
- Median
- Membranes
- Method Detection Limit
- Midi-Rig
- Minimum Bending Radius
- Monitoring
- Monitoring Well
- Mucking Out
- Mud
- Magnetometer
- Main Stem
- Major Ions
- Man Entry
- Mapping of Underground Space
- Marine Wetland
- Market Value
- Marketable Good
- Marsh
- Massive Rock
- Material
- Maturity
- Maturity (stream)
- Maximum System Diameter
- Mean
- Mean Discharge (MEAN)
- Mean High Tide
- Mean Low Tide
- Medium Depth
- Melt Mass-Flow Rate
- Mesophyte
- Metabolite
- Metamorphic Rocks
- Micrograms Per Liter (µg/L)
- Midge
- Milligram (mg)
- Milligrams Per Litre (mg/L)
- Mined Construction
- Miner
- Mineral Soil
- Minimum Reporting Level (MRL)
- Mitigation
- Model
- Moisture
- Monitoring2
- Monocyclic Aromatic Hydrocarbons
- Montane
- Moraine
- Mountainous Conditions
- Mouth
- Muck
- Muck Removal /
- Multi drift
- Muskeg
- N
- Narrow Trenching
- NATM or SCL
- Non Destructive Testing (NDT)
- Non Man Entry
- N value
- Network
- Nominal Size
- Nominal Size DN/O
- Non Aggressive Cleaning
- Non-structural Layer
- NRSWA
- National Academy of Sciences/National Ac
- National Geodetic Vertical Datum of 1929
- National Water-Quality Assessment (NAWQA
- Natural Cavern
- Natural Levee
- Navigable Water
- Nitrate
- Node
- Noise Pollution
- Nominal Outside Diameter
- Non Contact Water Recreation
- Nonpersistent Emergent Plants
- Nonpoint Source
- Nonpoint Source Contaminant
- Nonpoint Source Water Pollution
- Nonselective Herbicide
- Nuisance Species
- Nutrient
- NWC
- O
- Open Cut
- Open cut2
- Open Face Shield
- Open Shield
- Outfall
- Overcut
- Off-line Tank
- OFWAT
- On-line Tank
- Operational Reliability
- Operator (for a system)
- Operator (of equipment)
- Opportunistic Inspections
- Options / Alternatives
- Orifice
- Overflow
- Own Reprocessable Material
- Owner
- Occurrence and Distribution Assessment
- Offstream Use
- Operating Costs
- Operation
- Organic
- Organic Detritus
- Organic Soil
- Organisation of work
- Organochlorine Compound
- Organochlorine Insecticide
- Organochlorine Pesticide
- Organonitrogen Herbicides
- Organophosphate Insecticides
- Organophosphorus Iinsecticides
- Orographic
- Outside shape
- Outwash
- Ovality
- Overbreak
- Overburden
- Overland Flow
- Overpass
- Oxbow
- P
- Pilot Bore
- Pilot Boring
- Pinholing
- Pipe Bursting
- Pipe Bursting2
- Pipe Characteristics
- Pipe Displacement
- Pipe Eating
- Pipe Jacking
- Pipe Pulling
- Pipe Ramming
- Pipe Replacement
- Pipe Splitting
- Pipe Unit
- Pipe Unit Length
- Pipeline
- Pipeline Length
- Pipeline System
- Pit
- Point Source Repair
- Pointing
- Potable Water
- Preconditioning Work
- Preparatory Cleaning
- Pressure Balance
- Primary Lining-
- Product Pipe
- PU Lining
- Pull-Back
- Pull-Back Force
- Partially Separate System
- Parties
- Peak Discharge
- Performance
- Pilot Tunnel
- Planning
- Polychlorinated Biphenyls (PCBs)
- Polycyclic Aromatic Hydrocarbon (PAH)
- Portal
- Posts
- Potential Survey
- Process Verification Test
- Product Stages
- Production Batch
- Public Domain
- Public Supply Withdrawals
- Pumping Installation
- Pumping Station
- Package Plant
- Paleohydrology
- Palustrine Wetlands
- Part Per Million (ppm)
- Partial face machine
- Pathogen
- Peak Stage
- Peat
- Perched Ground Water
- Percolation
- Perennial Stream
- Periphyton
- Permafrost
- Permanent ballast
- Permeability
- Pesticide
- pH
- Phenols
- Phosphorus
- Photosynthesis
- Phthalates
- Physiographic province
- Physiography
- Phytoplankton
- Pick bit
- Picocurie (pCi)
- Piezocone
- Pilot Anchor
- Pioneer Plant
- Piping
- Piston Effect
- Placer
- Plankton
- Planner
- Playa
- Playa Lake
- Pocosin
- Point Source
- Point Source Contaminant
- Poling Plate Shield
- Pollutant
- Pollutant2
- Pollution
- Pool
- Population
- Porosity
- Postemergence Herbicide
- Potential Evapotranspiration
- Potentiometric Surface
- Prairie Pothole
- Precipitation
- Preemergence Herbicide
- Preliminary Type Testing
- Pre-splitting
- Pristine
- Probing ahead
- Profitable
- Progress of Works
- Project Commissioning
- Project Management
- Propel Jacks (or cylinders)
- Provision
- Public Sewer
- Pumping
- Q
- R
- Reception Shaft
- Reception/Exit Shaft/Pit
- Rehabilitation
- Reinstatement
- Remaining Service Life
- Renewal
- Renovated Pipeline System
- Renovation
- Renovation2
- Repair
- Replacement
- Rerounding
- Resin Injection
- Ring Stiffness
- Rising Main
- Robot
- Radiography
- Reaction Wall
- Real Time Data
- Regulator
- Reinforced concrete
- Reinforcement
- Retention Time
- Ribs and Lagging
- Right Of Way
- Risk Assessment
- Risk Control
- Rodding
- Roughness
- Radon
- Rain Shadow
- Rainfall Intensity
- Ramp Manhole
- Reach
- Reaeration
- Receiving Water
- Recessional Moraine
- Recharge (Ground Water)
- Recharge Area (Ground Water)
- Rectangular shape
- Recurrence Interval
- Recyclable Material
- Reference Site
- Regolith
- Regulation (of a stream)
- Relative Abundance
- Relevant Authority
- Requirement
- Residential Water Use
- Resistivity
- Retrospective Analysis
- Return
- Return Flow
- Return Period
- Revolution Per Minute (RPM)
- Rib
- Riffle
- Ring
- Ring beam
- Riparian
- Riparian Rights
- Riparian Zone
- Risk
- River Care
- Riverine Wetlands
- Roadheader
- Rock
- Rock Bolt
- Rock Mass
- Rock Mechanics
- Rock Protection
- Rock Quality Designation
- Rockbolting
- Roof
- Roof Protection
- Run To Spoil
- Runoff
- Runoff Coefficient
- Rural Withdrawals
- S
- Sanitary Sewer
- Segmental Lining
- Segmental Sliplining
- Separation Plant
- Septic Sewage
- Sewage
- Sewer
- Sewer Rehabilitation
- Sewer System
- Sewerage
- Sewerage System
- Shaft
- Shield
- Shotcrete
- Single Pass
- Skin Friction
- Sleeve Pipe
- Sliplining
- Slurry Shield Method
- Slurry TBM
- Social Costs
- Social Costs2
- Soffit
- Soft ); INSERTion Lining
- Soft Lining
- Specification
- Spiral Lining
- Spoil2
- Spray Lining
- Sprayed Concrete
- SRM
- Standard Dimensional Ratio (SDR)
- Steerable Moling
- Structural Condition
- Surface Heave
- Survey Tools
- Swagelining ™
- Safety
- Safety factor
- Safety training
- Sample
- Sample2
- Secondary Lining
- Segments
- Self Cleansing
- Sensitive Main
- Separate System
- Septic Tank
- Sewer Outfall
- Shallow Depth
- Sharing of Risks
- Sheet Pile
- Shield Tail (or skirt)
- Shield Tunnelling Method
- Short Term Programme Of Works
- Simulated Host Pipeline
- Simulated Installation
- Simulation
- Siphon
- Skewness
- Skip
- Slime Shield
- Slime Shield2
- Slip Coatings
- Slurry
- Soak Away
- SSES
- Stakeholder
- Standard Deviation
- Storm Overflow
- Strategic
- Strategic Factors
- Structural Layer
- Structured Wall
- STW
- Sub Division Of Systems
- Submerged Floating Tunnel (SFT)
- Subsurface
- Subsurface Drain
- Subsurface Mapping
- Sudden Failure
- Surcharge
- Surcharge2
- Surface Flooding
- Surface Runoff
- Surface Water
- Survey
- SWO
- System
- Safety apparatus
- Salina
- Saline Water
- Saturated Zone
- Scraper Chain Conveyor
- Sea Level
- Sea Water
- Secant Piles
- Secondary Maximum Contaminant Level (SMC
- Sediment
- Sediment Guideline
- Sediment Transport
- Sedimentary Rocks
- Sedimentation
- Seep
- Segmental lining2
- Seiche
- Seismicity
- Selective Herbicide
- Self Purifying Capacity
- Semipermeable Membrane Device (SPMD)
- Semivolatile Organic Compound (SVOC)
- Settlement
- Shale
- Shallows
- Shape
- Shear Strength
- Shoal
- Shortwave Trough (meteorlogical)
- Shrubland
- Side wall
- Sideslope Gradient
- Siliciclastic Rocks
- Silt
- Siltation
- Siltstone
- Silviculture
- Simple Hand Excavation
- Simulation Model
- Sinkhole
- Sinking
- Sinuosity
- Slough
- Slurry Shield
- Slurry Trench
- Soft Ground
- Soil
- Soil Horizon
- Soil Mechanics
- Soil Moisture
- Soldier Piles and Lagging
- Sole Source Aquifer
- Solid Phase Extraction
- Solute
- Solution
- Solvent
- Sorb
- Sorption
- Source Rocks
- Spacer Block
- Span
- Species
- Species (taxa) Richness
- Species Diversity
- Specific Capacity
- Specific Conductance
- Specific Yield
- Spill Event
- Spill Frequency
- Spit
- Split Sample
- Spoil
- Spring
- Spring Line
- Stabilisition
- Stage
- Stand-up time
- State Climate Division
- Statistics
- Steel Arch
- Steering
- Storm
- Storm Surge
- Stratification
- Stream Aquifer Interactions
- Stream Mile
- Stream Order
- Stream Reach
- Streamflow
- Streamline
- Study Unit
- Study-Unit Survey
- Sub Aqueous
- Sub Critical Flow
- Submersed Plant
- Submersion
- Subsidence
- Substrate
- Substrate Size
- Subtidal
- Subtropical Anticyclone
- Sump
- Super Critical Flow
- Support
- Surface Settlement
- Surveying
- Suspended
- Suspended Sediment
- Suspended Sediment Concentration
- Suspended Solids (SS)
- Swabbing
- Swale
- Swamp
- SWQO
- Synoptic sites
- T
- Taper
- Target Shaft/Pit
- TBM
- Technique Family
- Techniques
- Techniques2
- Thrust
- Thrust Boring
- Thrust Jacking Method
- Thrust Pit
- Thrust Ring
- Total Cost
- Trench
- Trenching
- Trenchless
- Trenchless Technology
- Trunk Main
- Tuberculation
- Tunnel
- Tunnel Boring Machine (TBM)
- Two Pass
- Tail Void
- Tank Sewer
- Temporary Ballast
- Tendering
- Tendering Procedure
- Terminal Structure
- Tertiary Treated Sewage
- Testing Laboratory
- Thrust Jacks (or cylinders)
- Tool (cutting)
- Tooth (disc cutter)
- Top Down Construction
- Top Heading
- Total Head
- Towing or Transportation
- Trade Effluent
- Traffic Management
- Training Programme
- Tunnel / Underpass Approach
- Tunneled Construction
- Type Testing
- Tail of the Shield
- Tailings
- Tarn
- Taxa Richness
- Taxon (plural taxa)
- Tectonic Activity
- Telluric Interference
- Temporary Support
- Terminal Moraine
- Terrane
- Terrestrial
- Thermal Loading
- Thermoelectric Power
- Thermokarst
- Three Dimensional Ownership
- Tidal Flat
- Tide
- Tier 1 Sediment Guideline
- Tile Drain
- Till
- Timbering
- Time Of Concentration
- Tinaja
- Tissue Study
- Tolerant Species
- Tool consumption
- Tooth (spade)
- Topography
- Total Concentration
- Total DDT
- Trace Element
- Tracer
- Trade Winds
- Tranmissivity
- Transpiration
- Triazine Herbicide
- Triazine Pesticide
- Tributary
- Tritium
- Tropical Cyclone
- Troposphere
- Trough (ground water)
- Trough (meteorological)
- TSR
- Tundra
- Turbidity
- U
- Ultrasonic Inspection
- User
- Utility Corridor
- Utility Services
- Uncased Bore
- Unlined
- Urban Site
- Urban Waste Water Treatment Directive
- Unconfined Aquifer
- Unconsolidated Deposit
- Under Pinning
- Underground Facility
- Underground Planning
- Underground Water
- Underpass
- Understory
- Un-ionized
- Un-ionized Ammonia
- Unsaturated Zone
- Upgradient
- Upland
- UPM Manual
- Upsizing
- Uranium (U)
- Urban Drainage
- Urban Planning
- V
- VCP
- Ventilation
- Ventilation (longitudinal ventilation)
- Ventilation (semi- transverse ventilatio
- Ventilation (transverse ventilation)
- Verification
- Verified Model
- Volatile Organic Compounds (VOCs)
- Vortex Manhole
- Value
- Value of Life
- Value of Time
- Vascular Plant
- Vault
- Vernal Pool
- Virgin Material
- Visual Pollution
- W
- Wall Thickness
- Washover Pipe
- Wastewater
- Water Jetting
- Water Quality
- Water Quality Criteria
- Water Quality Guidelines
- Water Quality Standards
- Walkover System
- Wallingford Procedure
- Water Demand
- Water Pollution
- Waterproofing Membrane
- Watertightness
- Wall
- WaPUG
- WaPUG Code of Practice
- Wasteway
- Water Budget
- Water Column
- Water Column Studies
- Water Content of Snow
- Water Course
- Water Exports
- Water Gap
- Water Imports
- Water Resources Region
- Water Resources Subregion
- Water Rights
- Water Table
- Water Year
- Waterproofing
- Watershed
- Waterstop
- Weather
- Weathered Rock
- Weathering
- Weighted Mean
- Wet Well
- Wetland Function
- Wetlands
- Willow Carr
- Withdrawal
- Witness Testing
- WQO
- X
- Y
- Z
- A
- Gold Medal History
Footermenu3
Search for Trenchless Events
Thematic words
trenchless technology involves installation replacement renewal underground utilities minimum excavation surface disruption several construction techniques methods details technologies successfully water sewer industrial pipelines electrical conduit fiber optics particularly attractive option urbanized heavy pedestrian traffic numerous existing crossing roadways other transportation corridors rivers waterways install rehab replace located environmentally sensitive areas
by pavoneggi