An open face shield is a type of tunnel boring machine (TBM) that has no frontal support. It is used in trenchless tunnel excavation with either manual or machine digging. Its use is limited. and is dependent on the ground being tunneled and the objectives of the project. A TBM with an open face… View Full Term
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By: Denise Sullivan | Technical Writer @ Trenchlesspedia
By: Tabitha Mishra | Civil Engineer, Technical Content Writer
An invert level is defined as the elevation of the inside-bottom of a pipe, trench, culvert, or tunnel. It may also be considered the "floor level" of a pipe. Invert levels are essential for assessing the flow in a piping system. For example, the invert of a municipal sewer…
Hoop stress is the stress that occurs along the pipe’s circumference when pressure is applied. Hoop stress acts perpendicular to the axial direction. Hoop stresses are tensile and generated to resist the bursting effect that results from the application of pressure. Three principal…
Cut-and-cover trenching is a form of open trench installation. It begins with a trench. Small projects may be completed entirely from the surface with a microtrencher. Larger projects may involve heavy equipment, such as a backhoe. Depending on the depth of the trench required by the…
Horizontal directional drilling (HDD) is a useful trenchless method of installing new pipelines. It's the go-to method for oil drilling companies due to its ability to go further and, depending on the drill head and other factors, drill through different types of soil. Controlling the…
By: Denise Sullivan
Site investigation is an integral part of any construction project, and should be attributed as much significance as would be ascribed to any other part of the project. The risk associated with undertaking a project without adequate site investigation is monumental. It's wiser to be…
By: Tabitha Mishra
Horizontal directional drilling (HDD) is a conventional method employed by cities and construction workers to install utilities and plumbing underground. Unlike traditional underground installation, HDD does not require open trenches to complete. Equipment Needed for HDD As horizontal…
Tunnel boring machines (TBMs) and microtunnel boring machines (MTBMs) are used to construct underground tunnels and passages with circular cross-sections. They both use a drilling mechanism, known as a cutting head, to remove material and advance the equipment forward. However, both these…
By: B
Yes, very important! The following is a basic explanation based on using what is known as The Bingham Plastic Model. Plastic Viscosity (PV), Yield Point (YP) and Gel Strengths Plastic Viscosity PV is known as the plastic viscosity of the drilling fluid. A low PV indicates that the mud is…
Microtunneling and guided boring are often erroneously used interchangeably in the construction industry. While both these trenchless boring methods may seem identical, there are a number of key differences between the two that need to be considered when deciding which technology is…
By: Krystal Nanan | Civil Engineer
In the realm of underground infrastructure repair or installation, trenchless technology has revolutionized how professionals approach projects. This innovative method…
By: Chad Decker | Founding Partner, Devco Development and Engineering
Installing utilities like water, electricity, gas, and telecommunications infrastructure often involves disruptive processes that can inconvenience communities, disrupt…
By: Trenchlesspedia Staff
Horizontal Auger Boring offers a streamlined approach to installing underground pipelines, conduits, and cables without the need for extensive excavation. But, like any…
There are two primary methodologies within the realm of underground construction: trenchless and cut-and-cover. Both methods have distinctive characteristics and…
Trenchless methods are efficient and environmentally sustainable options for many projects, but require careful consideration of the equipment used. To select the most…
In the fields of engineering and construction, pipe repair is essential to the upkeep and maintenance of infrastructure. My role as a managing partner at Devco…
Pipe bursting is an advanced trenchless solution designed to replace deteriorating pipes without the need for extensive excavation. By employing different techniques,…
When it comes to trenchless excavation, choosing the right trenchless boring method is crucial to the success of your project. Trenchless boring, also known as…
Horizontal directional drilling (HDD) and auger boring are two common methods of trenchless excavation used in construction projects. Both methods offer unique benefits…
Trenchless technology has revolutionized the construction industry in the past few decades. With the advent of trenchless techniques like pipe jacking and…
The inadvertent return of drilling fluid is common in horizontal directional drilling (HDD) projects, and though not harmful to the environment, inadvertent returns are…
Requirements for horizontal directional drilling (HDD) environmental planning and construction monitoring vary greatly across North America, but regulatory obligations…
Open Face Shield
By: Bertus Vos
Della is a Civil Engineer with extensive yet progressing experience in a consulting industry. Her experience primarily focuses on underground…
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Krystal is a civil engineer and project manager with an MSc in Construction Engineering and Management. Her experience includes the project…
Klaus joined SAERTEX multiCom LP in 2019, first responsible for the business development in North America and from MAY 2020 as Managing Director.He…
