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Trenchless ConstructionUnderstanding the 4 Stages of Site Investigation
By: Tabitha Mishra | Civil Engineer, Technical Content Writer
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Trenchless Construction
Microtunneling Vs. Horizontal Directional Drilling: Understanding the Differences Between These Key Trenchless Methods
By: Tabitha Mishra | Civil Engineer, Technical Content Writer
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Trenchless Rehabilitation
The 5 Best Pipe Joining Methods You Can Always Depend On
By: Denise Sullivan | Technical Writer @ Trenchlesspedia
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Hoop Stress
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 stresses...
Invert level
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 connection can...
Nominal Diameter
Nominal Diameter is also known as the mean or average outside diameter and is represented by DN. It is neither equal to the inner diameter (ID) nor the outer diameter (OD) of the pipe. Nominal is a word that denotes non-specificity and in this case, identifies the approximate inner diameter with a...
Understanding the 4 Stages of Site Investigation
Site investigation may be considered the most important part of any project, because without it, projects are likely to run into unexpected problems.
By: Tabitha Mishra | Civil Engineer, Technical Content Writer
The 5 Best Pipe Joining Methods You Can Always Depend On
Proper pipe joining methods leave the lines melded together without leaks. Choosing the right approach has many variables.
By: Denise Sullivan | Technical Writer @ Trenchlesspedia
Microtunneling Vs. Horizontal Directional Drilling: Understanding the Differences Between These Key Trenchless Methods
Horizontal directional drilling and microtunneling each have their own pros and cons. Here we review the major differences between the two methods.
By: Tabitha Mishra | Civil Engineer, Technical Content Writer
What are the differences between a TBM and a MTBM?
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 pieces of...
By: Krystal Nanan | Civil Engineer
Why is horizontal directional drilling better for the environment?
Horizontal directional drilling (HDD), also known as directional boring or horizontal earth boring, involves using a surface drilling rig to install underground pipes, conduits, cables and any other utility in a shallow arc along a predefined bore path. This technique is so named due to its ability...
By: Krystal Nanan | Civil Engineer
What’s the difference between microtunneling vs. guided boring?
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 better suited...
By: Krystal Nanan | Civil Engineer
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