Most engineering engagements end with a stamped set of calculations for one specific project. Some of the most useful work I do produces something else: a tool that designs, which the client and their own customers run over and over without coming back to me each time.
The idea
Picture a company that sells the same kind of structure in many variations: a carport line, a sign or scoreboard product, a racking system. Every order is a little different, different dimensions, different site, different wind and snow, different jurisdiction, but the engineering underneath is the same set of checks applied to different numbers. Paying an engineer to redo that analysis by hand for every order is slow and expensive. The better answer is to do the engineering once, thoroughly, and capture it in a calculator that produces a correct, defensible design for any valid combination of inputs.
I have built several of these. They take a configuration, the geometry, the loads, the applicable code, and return the member sizes, the connections, the foundations, the whole package, with the logic of a full structural analysis running underneath a simple input screen. The client’s sales or engineering staff can quote and design in minutes instead of waiting days for a one-off analysis.
Why a calculator is harder to build than a single design
A calculator that anyone can run is a much more demanding thing to build than a single stamped calculation, and it is worth being honest about why.
When I design one structure, I apply judgment at every step. A calculator has to apply that judgment automatically, for inputs I have not personally seen, which means every input has to be bounded and validated, and the tool has to refuse the cases that fall outside the envelope it was designed for instead of quietly producing a wrong answer. The hard engineering is defining the boundaries of where the tool is allowed to operate and making sure it stays inside them. Encoding the relevant code provisions correctly across an entire market, with different wind and snow and seismic conditions, is its own substantial effort. And it all has to be version-controlled and documented, because a calculator that silently changes its answers between revisions is a liability rather than an asset.
Done right, the calculator performs the engineering within a clearly defined envelope, and I stand behind that envelope the same way I would behind any deliverable.
Where the automation work contributes
This is where the tooling I have built for myself does the most good. The same ability to move quickly and reliably between a design description and a verified structural model, which is the basis of my SAP2000 and broader automation work, is what makes it practical to build and validate a parametric calculator across an entire product line. Running the underlying analysis a hundred ways to confirm that the calculator agrees with first-principles models at every corner of its input space used to be prohibitively tedious. It is no longer.
If you sell a repeatable engineered product and you are paying for the same analysis again and again, a calculator might be the most useful thing I can build for you. The deliverable is a tool your business keeps using. That kind of work falls under my structural engineering services.