Seldom do we know what lies beneath our feet...

Engineering is difficult work, with the most serious of consequences if its not done properly. Maverick Inspection Ltd. realizes that you need the most accurate, up to date information if you are going to do your job properly.

We have developed applications for GPR which are engineering specific, and can be used to meet your needs. For more information contact James Harrison at (780) 467-1606.

Concrete Engineering:
Maverick provides information concerning rebar spacing, placement, depth of coverage and concrete thickness which is more current, more accurate and more reliable than 30 year old “as-built” drawings.

Combined with such abilities as rebar locating for physical verification and measurement, this can provide accurate information on which to base load bearing capacity calculations or fulfill similar needs.

Maverick has been tasked with providing accurate depth-of-coverage information for rebar in concrete girders. Our margin of error was verified at +/-3mm 95% of the time, with the remaining error caused by plastic chairs within the concrete, used to hold the rebar in place. Such fine margins of error require very specific field calibration techniques, but are not outside the capabilities of the system in question.

If coring is required in concrete then damaging rebar greatly reduces the strength of the slab. Knowing where the rebar is located prior to coring can prevent this damage, and preserve more strength in the structure. Historically, this work was performed using X-ray, and involved working outside regular hours, evacuating large areas, arranging for special security and safety precautions and then dealing with radioactive material. GPR has been used in active hospitals, schools, and shopping centers with no need to evacuate, during crowded open hours. No inconvenience = no excuse. 
 

Void Detection
GPR can distinguish between slab-on-grade and suspended slabs. Therefore we can locate voids beneath concrete pads. These voids may be the results of inadequate compaction during construction, washouts or erosions. The information can then be tied into site plans and additional analysis and corrective actions can be performed.

Phase I, and Phase II reclamations
Reclamation work, environmental engineering and other testing requires the drilling of boreholes. Maverick Inspection Ltd. provides private utility locates, on private property using a combination of E.M. detection and GPR systems. This allows us to locate both metallic and non-metallic lines with and without tracer wires.

In addition, we have used GPR to locate and delineate the boundaries of saturation plumes, contamination plumes, trenches, underground storage tanks and other targets of interest.

Wellhead Locating
Maverick Inspection Ltd. has on numerous occasions located the precise location of formerly abandoned hydrocarbon wells. The wellheads were removed above ground, and in many cases the area was leveled, tilled and farmed for decades, but the telltale signatures of deep ground disturbance and metal well casings remained visible to the GPR system. We do require a starting point in order to locate such elusive targets, but provided with a rough survey point, we can reduce the target area to less than a meter, which is easy to hydrovac and confirm. 
 

Critical Lifts and Sinkholes
Super heavy crane lifts require stable footing in order to control their heavy loads at arms length. Stable footing requires outriggers, counterweights and solid ground. But what happens if any of these three factors are missed? Outriggers and counterweights can easily be applied and are engineered into the lifts in the first place. Solid ground is generally assumed, but the assumption can be verified by using GPR in order to locate potential sinkholes, saturation plumes, sheers and other invisible subsurface hazards before the lift.

For these, or any other application you can think of, contact James Harrison at (780) 467-1606.

Seldom do we know what lies beneath our feet...

Engineering is difficult work, with the most serious of consequences if its not done properly. Maverick Inspection Ltd. realizes that you need the most accurate, up to date information if you are going to do your job properly.

We have developed applications for GPR which are engineering specific, and can be used to meet your needs. For more information contact James Harrison at (780) 467-1606.

Concrete Engineering:
Maverick provides information concerning rebar spacing, placement, depth of coverage and concrete thickness which is more current, more accurate and more reliable than 30 year old “as-built” drawings.

Combined with such abilities as rebar locating for physical verification and measurement, this can provide accurate information on which to base load bearing capacity calculations or fulfill similar needs.

Maverick has been tasked with providing accurate depth-of-coverage information for rebar in concrete girders. Our margin of error was verified at +/-3mm 95% of the time, with the remaining error caused by plastic chairs within the concrete, used to hold the rebar in place. Such fine margins of error require very specific field calibration techniques, but are not outside the capabilities of the system in question.

If coring is required in concrete then damaging rebar greatly reduces the strength of the slab. Knowing where the rebar is located prior to coring can prevent this damage, and preserve more strength in the structure. Historically, this work was performed using X-ray, and involved working outside regular hours, evacuating large areas, arranging for special security and safety precautions and then dealing with radioactive material. GPR has been used in active hospitals, schools, and shopping centers with no need to evacuate, during crowded open hours. No inconvenience = no excuse. 
 

Void Detection
GPR can distinguish between slab-on-grade and suspended slabs. Therefore we can locate voids beneath concrete pads. These voids may be the results of inadequate compaction during construction, washouts or erosions. The information can then be tied into site plans and additional analysis and corrective actions can be performed.

Phase I, and Phase II reclamations
Reclamation work, environmental engineering and other testing requires the drilling of boreholes. Maverick Inspection Ltd. provides private utility locates, on private property using a combination of E.M. detection and GPR systems. This allows us to locate both metallic and non-metallic lines with and without tracer wires.

In addition, we have used GPR to locate and delineate the boundaries of saturation plumes, contamination plumes, trenches, underground storage tanks and other targets of interest.

Wellhead Locating
Maverick Inspection Ltd. has on numerous occasions located the precise location of formerly abandoned hydrocarbon wells. The wellheads were removed above ground, and in many cases the area was leveled, tilled and farmed for decades, but the telltale signatures of deep ground disturbance and metal well casings remained visible to the GPR system. We do require a starting point in order to locate such elusive targets, but provided with a rough survey point, we can reduce the target area to less than a meter, which is easy to hydrovac and confirm. 
 

Critical Lifts and Sinkholes
Super heavy crane lifts require stable footing in order to control their heavy loads at arms length. Stable footing requires outriggers, counterweights and solid ground. But what happens if any of these three factors are missed? Outriggers and counterweights can easily be applied and are engineered into the lifts in the first place. Solid ground is generally assumed, but the assumption can be verified by using GPR in order to locate potential sinkholes, saturation plumes, sheers and other invisible subsurface hazards before the lift.

For these, or any other application you can think of, contact James Harrison at (780) 467-1606.