• Home
  • What Trenchless Means?
Technology

What Trenchless Means?

Related Definitions Trenchless means installed without breaking the ground or the pavement surface, such as by jacking, boring, tunneling or mechanical compaction.
Click to see the full answer

Related to Trenchless

Trench means an excavation in the pavement, with the excavation having a length equal to or greater than the width of the pavement.

Substrate (3) means a sheet of base material with or without an interconnection pattern and on which or within which 'discrete components' or integrated circuits or both can be located.

Stack means any point in a source designed to emit solids, liquids, or gases into the air, including a pipe or duct but not including flares.

Hydrophytic vegetation means macrophytic plant life growing in water or on a substrate that is at least periodically deficient in oxygen as a result of excessive water content.

Sensor means any measurement device that is not part of the vehicle itself but installed to determine parameters other than the concentration of gaseous and particle pollutants and the exhaust mass flow.

Hydrogen means the lightest of all gases, occurring chiefly in combination with oxygen in water; it exists also in acids, bases, alcohols, petroleum, and other hydrocarbons.

DUPLEX DWELLING , means the whole of a dwelling that is divided horizontally into two separate dwelling units each of which has an independent entrance either directly from the outside or through a common vestibule.

Fluoroscopic imaging assembly means a subsystem in which x-ray photons produce a set of fluoroscopic images or radiographic images recorded from the fluoroscopic image receptor. It includes the image receptors, electrical interlocks, if any, and structural material providing linkage between the image receptor and diagnostic source assembly.

Retrenchment means the termination by the employer of the service of a worker for any reason whatsoever, otherwise than as a punishment inflicted by way of disciplinary action, but does not include—

borehole means a hole sunk into the earth for the purpose of locating, abstracting or using subterranean water and includes a spring;

Flocculation means a process to enhance agglomeration or collection of smaller floc particles into larger, more easily settleable particles through gentle stirring by hydraulic or mechanical means.

Pump means a device used to raise pressure, drive, or increase flow of liquid streams in closed or open conduits.

Disinfectant means any oxidant, including but not limited to chlorine, chlorine dioxide, chloramines, and ozone added to water in any part of the treatment or distribution process, that is intended to kill or inactivate pathogenic microorganisms.

Gravel means dredged materials with a diameter of at least 2 and less than 64 millimetres;

Cannabinoid extract means a substance obtained by separating cannabinoids from marijuana by:

Diesel means, with respect to Article 4 only, a liquid petroleum product that meets the specifications in American Society for Testing and Materials Standard D-975-94, “Standard Specification for Diesel Fuel Oils” amended April 15, 1994 (and no future amendments or editions), which is incorporated by reference and on file with the Department and the Office of the Secretary of State.

Polystyrene foam adhesive means an aerosol adhesive designed to bond polystyrene foam to substrates.

Filter means material placed in the useful beam to preferentially absorb selected radiations.

Reactor means a vat or vessel, which may be jacketed to permit temperature control, designed to contain chemical reactions.

Fabrication means making up data or results and recording or reporting them.

PAD means a Preauthorized Debit.

Infiltration means water other than wastewater that enters a sewer system (including sewer system and foundation drains) from the ground through such means as defective pipes, pipe joints, connections, or manholes. Infiltration does not include, and is distinguished from, inflow.

Reactivation means the process whereby an inactive licensee obtains a current license.

Strain means the classification of marijuana or cannabis plants in either pure sativa, indica, afghanica, ruderalis, or hybrid varieties.

Polystyrene foam means blown polystyrene and expanded and extruded foams (sometimes called StyrofoamTM) which are thermoplastic, petrochemical materials utilizing a styrene monomer and processed by any number of techniques including, but not limited to, fusion of polymer spheres (expandable bead polystyrene), injection molding, foam molding, and extrusion-blown molding (extruded foam polystyrene). Polystyrene foam is generally used to make cups, bowls, plates, trays, clamshell containers, meat trays and egg cartons.

Duct is a single enclosed path to house facilities to provide Telecommunications Services.

11 Related questions Answers found

What does trenchless construction mean?

Trenchless technology is a type of subsurface construction work that requires few trenches or no continuous trenches. It is a rapidly growing sector of the construction and civil engineering industry.

What is trenchless method?

Trenchless technology is an underground construction method of installing, repairing and renewing underground pipes, ducts and cables using techniques which minimize or eliminate the need for excavation.

What is pipe bursting method?

Pipe bursting is a method by which the existing pipe is opened and forced outward by a bursting tool. A hydraulic or pneumatic expansion head (part of the bursting tool) is pulled through the existing pipeline, typically by using a cable and winch.

What is directional drilling used for?

Directional drilling is a technique used by oil-extraction companies in order to access oil in underground reserves. Directional drilling is also called directional boring.

What is trenchless installation?

Trenchless technology is a form of underground construction that requires the use of few or no trenches at surface or street level. Trenchless technology uses new techniques and equipment to install or replace underground infrastructure without causing disturbance to the ground above.

What is a trenchless pipeline?

TYPES OF TRENCHLESS CONSTRUCTION Pipes, conduits and cables are installed using a guided, surface-based drilling rig that creates a pathway underground. The rig then pulls the line through the resulting hole. HDD is suited to longer crossings and can be used to install both large and small diameter product lines.

What are the benefits of trenchless technology explain with example?

Advantages of trenchless technology include reduced surface disruptions, lower reinstallation costs, and shorter construction times (O'Reilly and Stovin, 1996). Risk assessment and cost savings associated with employing trenchless technology are discussed by O'Reilly and Stovin (1996) and Tighe et al.

What is pipe jacking in construction?

Pipe jacking is a trenchless construction method to install product pipe through the ground on line and grade for new service lines, sewer tunnels and utilities.

Who invented trenchless technology?

Trenchless technology, the method of subsurface construction requiring little or no continuous trenching, began over 40 years ago. It was invented by Eric Wood. The first recorded tools to repair and replace underground pipelines came into service in the 1970s.

What is horizontal auger boring?

Horizontal auger boring (HAB) is a trenchless excavation method used to excavate boreholes under the earth's surface. It uses a rotating helical shaft within a casing to extract soil while advancing. The spiral edges of the auger, similar to a large helical screw, removes the excavated soil as the operation progresses.

What are trenches used for in construction?

In construction, trenches are dug for foundations of buildings, retaining walls and dams, and for cut-and-cover construction of tunnels. In archaeology, the "trench method" is used for searching and excavating ancient ruins or to dig into strata of sedimented material.