When you are hiring a helical pile installer, most of the conversation is about the contractor. Their crew, their equipment, their availability, their references. There is a question buried underneath all of that which decides more than it gets credit for: where does the engineer sit relative to the installer?
The answer affects how fast you get answers when something goes wrong on site, who is actually accountable when a design needs to change, and whether anyone will even show up to look at the problem in person. It also explains a lot of the frustration owners, engineers, and GCs run into without ever quite naming it.
Three Ways Installers Get Engineering Support
In my experience designing helical piles for the last 15 years, installers access engineering support in one of three ways. Each one creates a different distance between the installer and the engineer making structural decisions on the project.
Model 1: In-house engineering
The installer employs at least one licensed professional engineer directly. Designs are done internally. When questions come up during installation, the engineer is in the same company, on the same payroll, often in the next room or on a quick phone call.
This is the model with the most direct alignment. The engineer's priorities, the installer's priorities, and the project's priorities are all coming from the same place. When something needs to be re-evaluated on site, the engineer can be sent. No procurement chain, no schedule conflicts with another firm.
In my experience, companies generally hit the threshold to justify a full-time engineer somewhere around $7 to $10 million in annual sales, though it varies widely depending on the type of work and how design-heavy their projects are. Below that, you typically cannot keep one engineer busy enough to justify the salary, and the transition can be rough because a single in-house engineer becomes a single point of failure.
Model 2: The manufacturer's engineer
The installer relies on engineering provided by their pile manufacturer. Most major suppliers offer some form of engineering support attached to their product line.
The advantage is straightforward: the engineer knows the product. They have designed with it before. Their calculations are calibrated to the manufacturer's published capacities and standards, and the designs are generally code-compliant within the scope of that product.
The limitations are the part people often do not think about until they are standing on a job site with a problem. First, you usually do not know whether the manufacturer's engineer is an in-house staff engineer or a consultant the manufacturer has on retainer. Second, when an issue comes up, there is a chain: the installer calls the manufacturer, the manufacturer's rep contacts their engineer, the engineer responds to the manufacturer, the manufacturer relays the answer back. Even when everyone in that chain is competent and responsive, the steps add time, and information gets shaped a little at each handoff. Third, in my experience, manufacturer engineers are less likely to visit job sites. Their service usually ends at the stamped drawing.
Model 3: Independent consultant hired by the installer
The installer contracts directly with an outside engineering firm or independent engineer. The consultant works for the installer, not for a manufacturer, so the engineering is product-agnostic and project-specific.
In my experience, this is the model most likely to involve actual site presence, because the consultant has a direct contractual relationship with the contractor. If the installer wants the engineer on site, that is a service the consultant can provide.
The trade-offs are about scheduling and priorities. The consultant runs their own business and has their own clients. Response times depend on their workload that week, not on the installer's deadline. There is still a handoff between two organizations, even if it is a much shorter handoff than the manufacturer model.
Degrees of Separation
The cleanest way to think about all three models is degrees of separation between the installer and the engineer making structural decisions.
| Model | Who the engineer works for | Degrees of separation |
|---|---|---|
| In-house | Same company as the installer | 0 |
| Independent consultant | Their own firm, hired directly by the installer | 1 |
| Manufacturer's engineer (in-house) | The manufacturer | 1 |
| Manufacturer's engineer (consultant) | Their own firm, hired by the manufacturer | 2 |
The number itself is not a verdict. Every model produces good projects all the time. The number is a predictor for things you should plan around:
Response time. More steps in the chain means more time between question and answer.
Information loss. Every handoff is an opportunity for something to be misunderstood, simplified, or stripped of nuance.
Site presence. The closer the engineer is to the installer, the more likely they are to come look at the actual problem.
Alignment of incentives. A manufacturer's engineer is working within the scope of that manufacturer's product. An independent consultant is working within the scope of the installer's contract. An in-house engineer is working within the scope of the company's success.
What This Actually Means On a Job
When you are an engineer of record reviewing helical pile submittals, a GC scheduling the deep foundation phase, or an owner trying to understand what you are buying, this framework changes the questions you ask.
Ask the installer directly:
- Do you have a professional engineer on staff, or does your engineering come from outside?
- If outside, is it through the manufacturer or through a consultant your company hires directly?
- If a design question comes up during installation, who answers it and how fast?
- If something on site does not match the design, can your engineer come look at it, or does it get resolved by email?
None of these are gotcha questions. Any installer running a legitimate operation should be able to answer them in 30 seconds. The answers tell you what the rest of the project is going to feel like when, inevitably, something needs a decision in the field.
The Bottom Line
The helical pile industry runs on all three models, and good work gets done under each of them. This is not an argument that one model is correct and the others are not. It is an argument that the structure is information, and information is what lets you make better decisions about who you are hiring.
PileConnect lists the engineering capability on every installer profile -- in-house, manufacturer-supplied, or consultant. It is one of the things we verify before awarding a Verified badge, because in our experience it is one of the things that actually matters when a project gets complicated.
Cory Goulet is a P.Eng. with 15 years of helical pile design experience and the founder of PileConnect, a free directory of helical pile installers across North America.