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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 and the level of groundwater...

The Basics of Spray-in-Place Pipe


Here we will take a closer look at the SIPP method of pipe rehabilitation, a trenchless method similar to CIPP and which still eliminates ground disruption and costly...

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 stabilization techniques for...

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 corrosion-resistant. However, it has the...

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 scope, safety planning,...

Rehabilitating City Water Lines Using Trenchless Technology


Rehabilitating city waterlines via cured-in-place pipe, sliplining, pipe bursting and other trenchless methods fixes tuberculation, contamination and corrosion issues in...

A Look at Pipe Penetrating Radar


The use of pipe penetrating radar (PPR) helps to determine which areas of pipeline need attention most by way of CIPP, sliplining or pipe bursting repair. It also notes...

Common Causes for CIPP


Cured-in-place-pipe, also known as CIPP, is a trenchless method used to fix plumbing problems. CIPP works by inserting a resin-impregnated fiberglass cloth and pulling...

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 to support the hole and keep...

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 repaired and sealed without...

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 ground, drilling may be...

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 rigs, rods, reamers and a...

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, medium and hard ground...

Sliplining or Pipe Bursting for Pipe Repair?


Sliplining is ideal for straight pipes with slight to no bends, no protrusions or severe deformations. Pipe bursting does not allow for change of slope, requires bypass...

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 remove the slurry the water jet...