Trenchless Construction


large diameter borehole problems large diameter borehole problems large diameter borehole problems large diameter borehole problems


Direct indicators of an unstable borehole include the excess volume of drill cuttings, caving or heaving at the surface, cement required in...

Avoid tunnel collapse Avoid tunnel collapse Avoid tunnel collapse Avoid tunnel collapse


Analyzing the ground conditions is only a small part of successfully boring a tunnel. Using engineering skills as well as preparing the...

Proper Maintenance for Drill Rig Equipment Proper Maintenance for Drill Rig Equipment Proper Maintenance for Drill Rig Equipment Proper Maintenance for Drill Rig Equipment


Each of the components of a drill rig must be considered individually in order to maintain it. Rigs, rods, bits and back reamers, fluid...

Why Replace Conventional Trenching with Trenchless Technology? Why Replace Conventional Trenching with Trenchless Technology? Why Replace Conventional Trenching with Trenchless Technology? Why Replace Conventional Trenching with Trenchless Technology?


Trenchless rehabilitation is cheaper, less disruptive and requires less time to complete as opposed to conventional trenching projects,...

Using Trenchless Construction for Planned Communities Using Trenchless Construction for Planned Communities Using Trenchless Construction for Planned Communities Using Trenchless Construction for Planned Communities


Using trenchless construction for planned communities allows contractors to plan the infrastructure like sewer, water, gas and telecom...

Balancing Soil Pressure During Microtunnelling Balancing Soil Pressure During Microtunnelling Balancing Soil Pressure During Microtunnelling Balancing Soil Pressure During Microtunnelling


Soil pressure is a measure of the tendency of the soil at the face of the excavation to collapse. It differs depending on the type of soil...

Easement and Contract: The Legalities of Trenchless Projects Easement and Contract: The Legalities of Trenchless Projects Easement and Contract: The Legalities of Trenchless Projects Easement and Contract: The Legalities of Trenchless Projects


The most challenging part in the planning phase is land easement acquisition. Thanks to trenchless technology, land owners are more...

Choosing Drill Rods for Trenchless Tunneling Choosing Drill Rods for Trenchless Tunneling Choosing Drill Rods for Trenchless Tunneling Choosing Drill Rods for Trenchless Tunneling


For trenchless projects, managers select one of three main drill rod categories, A-series, D-series, or O-series. A-series rods are made of...

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...

The Geotechnical Investigation: Which Method Should We Use? The Geotechnical Investigation: Which Method Should We Use? The Geotechnical Investigation: Which Method Should We Use? The Geotechnical Investigation: Which Method Should We Use?


A geotechnical investigation is mostly done in an effort to identify the soils and ground conditions contractors will be working with. For...

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...