Trenchless Construction


The Planning Process: How to Prepare for a Trenchless Project The Planning Process: How to Prepare for a Trenchless Project The Planning Process: How to Prepare for a Trenchless Project The Planning Process: How to Prepare for a Trenchless Project


The planning of a trenchless project is similar to that of conventional projects, taking into account geotechnical investigation, project...

What is Horizontal Directional Drilling? What is Horizontal Directional Drilling? What is Horizontal Directional Drilling? What is Horizontal Directional Drilling?


Horizontal Directional Drilling or HDD is a process of trenchlessly boring a horizontal hole for the installation of new pipes using drill...

The Complex World of Sewer Networks The Complex World of Sewer Networks The Complex World of Sewer Networks The Complex World of Sewer Networks


There are three main types of sewer systems: separate, combined and partially separate systems. Separate sewer systems use two lines, one...

Everything You Need to Know About Grouting in Trenchless Projects Everything You Need to Know About Grouting in Trenchless Projects Everything You Need to Know About Grouting in Trenchless Projects Everything You Need to Know About Grouting in Trenchless Projects


Grouting is one of the original trenchless rehabilitation methods and has been in use for over 50 years. Through this method, sewers are...

Working With Drilling Deviations Working With Drilling Deviations Working With Drilling Deviations Working With Drilling Deviations


Drilling deviations come in many forms. The 1st order lineal deviation includes vertical deviation (msVD) and horizontal deviation (msHD)....

The Process of Pipe Ramming The Process of Pipe Ramming The Process of Pipe Ramming The Process of Pipe Ramming


When it comes to placing pipes under railroads, embankments, roads and landscapes, pipe ramming is the preferred trenchless method because...

Cased Boring VS. Uncased Boring Cased Boring VS. Uncased Boring Cased Boring VS. Uncased Boring Cased Boring VS. Uncased Boring


Uncased boring is similar to the cased method. However, instead of having a casing pushed into the hold made by the auger, there is nothing...

Jet-Grouting for Complex Shoring Jet-Grouting for Complex Shoring Jet-Grouting for Complex Shoring Jet-Grouting for Complex Shoring


We've provided an explanation of the technology of jet-grouting and how it can be applied to complex shoring and define complex shoring...

Ground Improvement Requirements When Working With Sandy Soil Ground Improvement Requirements When Working With Sandy Soil Ground Improvement Requirements When Working With Sandy Soil Ground Improvement Requirements When Working With Sandy Soil


Things to consider are how to deal with flooding issues, regulations concerning excavation and backfill of the site, and potential soil...

Trenchless Installation of Utility Lines and Access Ports in Urban Areas Trenchless Installation of Utility Lines and Access Ports in Urban Areas Trenchless Installation of Utility Lines and Access Ports in Urban Areas Trenchless Installation of Utility Lines and Access Ports in Urban Areas


The use of CIPP most commonly occurs to repair water, sewer, and gas lines. When installing utility lines in communities, an array of...

Steel or Concrete for Temporary Trenchless Shoring? Steel or Concrete for Temporary Trenchless Shoring? Steel or Concrete for Temporary Trenchless Shoring? Steel or Concrete for Temporary Trenchless Shoring?


Steel temporary trenchless shoring solutions like sheet piling are quick and cheap to install. However, if hard rock is encountered in the...

Trenchless Operations Safety Do’s and Don’ts Trenchless Operations Safety Do’s and Don’ts Trenchless Operations Safety Do’s and Don’ts Trenchless Operations Safety Do’s and Don’ts


Though trenchless construction eliminates excavation, the site selected for beginning the project should be where minimum disruption to...

The History of Vitrified Clay Pipe in Trenchless Installation The History of Vitrified Clay Pipe in Trenchless Installation The History of Vitrified Clay Pipe in Trenchless Installation The History of Vitrified Clay Pipe in Trenchless Installation


Vitrified clay pipe (VCP) has been in use since ancient Babylon. The material is abrasion-resistant and acidic erosion and...

Cost-Saving Trenchless Dewatering in Construction Projects Cost-Saving Trenchless Dewatering in Construction Projects Cost-Saving Trenchless Dewatering in Construction Projects Cost-Saving Trenchless Dewatering in Construction Projects


This water needs to be drained effectively to stabilize the soil so that construction work can proceed. If dewatering is not managed well,...

The Science of Getting it Right: Locating Underground Utilities The Science of Getting it Right: Locating Underground Utilities The Science of Getting it Right: Locating Underground Utilities The Science of Getting it Right: Locating Underground Utilities


This article takes an in-depth look at the advancements in science and technology that allow for the detection of subsurface elements....

The Right Drill Bit for Soft, Medium & Hard Ground Conditions The Right Drill Bit for Soft, Medium & Hard Ground Conditions The Right Drill Bit for Soft, Medium & Hard Ground Conditions The Right Drill Bit for Soft, Medium & Hard Ground Conditions


Depending on the soil structure, a geological investigation provides information on which drill bits should be used for drilling in soft,...

A Look at Hydro Vacuum Excavation A Look at Hydro Vacuum Excavation A Look at Hydro Vacuum Excavation A Look at Hydro Vacuum Excavation


A water jet that’s steered is an effective way of producing a tunnel that follows a project design path almost perfectly. Add suction to...

Horizontal Directional Drilling: 7 Key Facts to Know Horizontal Directional Drilling: 7 Key Facts to Know Horizontal Directional Drilling: 7 Key Facts to Know Horizontal Directional Drilling: 7 Key Facts to Know


Pilot hole curvature, the reamer size and the viscosity of the drilling fluid all require adequate planning knowledge in horizontal...

How Horizontal Auger Boring Works How Horizontal Auger Boring Works How Horizontal Auger Boring Works How Horizontal Auger Boring Works


Horizontal auger boring uses a combination of jacking to push pipe casings into the soil and an auger to remove the spoil from the inside...