Setting Up The Scope for You - From Boring to Utility Installations

understand what's underneath trademark trinity subsurface
Evan Mowbray and Randy Clinton

Trinity Subsurface works on a number of projects of varying sizes. Some projects may be smaller, like locating utilities in a section of a yard or cleaning a small section of pipe. Some projects are a bit more sizable, such as concrete scanning an entire building for structural details or creating multiple test holes for a bridge. It all depends on what kind of job requires Trinity’s services. In this article, we’ll discuss how we set up the scope of a project for all of our services, including what we use to determine the project details and what you’ll receive from Trinity Subsurface.

Utility Locating

Utility locating begins with a conversation with the client to determine the area where excavation will take place. Oftentimes, the area needing to be scanned expands further than the limits of excavation. Surface features outside of the scope of work need to be investigated to determine whether they are in conflict with the job scope or not. These surface features could be on the edge of the job scope, or they could be 1000’ away. The technician will also need to investigate feeds coming into the building. It’s important to understand that investigating utilities usually involves more than gathering information within the limits of excavation.


We can often find out more about the subsurface using known details of surface utilities and other conditions, and refine our data using ground penetrating radar, radio detection, and vacuum excavation. It also helps to know what kind of project is taking place, whether that involves putting in a mailbox or renovating an entire yard.

A Trinity Subsurface van on site at a job for utility locating. There are spraypainted utility markings mapping out all of the utilities in the area outside of a white building.


Concrete Scanning

Concrete scanning and analysis often involves the imaging and inspection of concrete structures, such as slabs, columns, CMU walls, and bridges. Determining the scope in these projects often involves the size of the structure. Most of the time this involves concrete scanning the inside of buildings to determine rebar/post-tension cable location and depth and utilities. In other cases, this may require additional equipment to perform a concrete scan of the outside of the building. In one case, our team had to scan the entire side of a fifty story high-rise building to examine wall tie-backs to determine the structural integrity of a wall facade. The scope of these concrete scanning projects often depends on the work being done to require our services. Sometimes these projects involve replacing utility systems, such as fire alarms or lighting. Other times, the concrete imaging may be for the preparation of a full renovation or expansion of the building or structure involved. Our concrete analysis surfaces take concrete imaging a step further by providing more in depth information on voids, delamination, honeycombing, etc. We can also provide information on concrete strength and reinforcement corrosion. Just like with utility locating, concrete scanning often relies on existing knowledge and building plans.

An image of a concrete slab marked with instructions on coring, showing rebar content and where not to core.


Pipe Services

The scope of pipe services, such as pipe repairs, pipe lining, or video pipe inspection, often depends on the length and diameter of the pipe. Video pipe inspection jobs may utilize a standard pipe crawler, a lateral pipe crawler, or a push camera for tighter pipes. Pipe repairs all depend on the amount of pipe sections that need to be repaired and the type of repair. Our pipe repair services allow for sections of pipe to be repaired without trenching.

Three construction workers installing a trenchless pipe.


Each project has a scope, and thankfully Trinity Subsurface can help you in understanding the full depth of your technical, excavation, or pipe project. Visit our website to find out more about all of our services and the scope of what we can do for your next big project.

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