Tested before release
Every version is checked against published values, such as the AISC Design Examples and the TR-55 worked examples, or against your own past calcs. The results are public.
Philadelphia & Chicago · structural & civil engineering firms
We build custom calculation and reporting tools for small engineering firms. If your office relies on a spreadsheet only one person understands, or your engineers spend hours turning field notes into inspection reports, we turn that into a tested web tool your whole team can use, with every calculation shown the way a reviewer expects to see it.
| F2-1 | Mp = FyZx = 50 × 24.7 | 102.9 k-ft |
| F2-5 | Lp = 1.76 ry√(E/Fy) | 2.90 ft |
| F1 | φbMn, φb = 0.90 | 92.6 k-ft |
| D/C = 53.2 / 92.6 | 0.575 OK | |
| G2-1 | φvVn = 0.6FyAwCv1 | 86.0 kips |
Anyone can generate a calculation script now. What a reviewer needs is proof that it's right, and certainty that everyone in the office ran the same one.
Every version is checked against published values, such as the AISC Design Examples and the TR-55 worked examples, or against your own past calcs. The results are public.
Each printed sheet carries the tool's version and release date, so a reviewer can see exactly which version produced it.
Fixed equations and checked inputs mean two engineers with the same inputs get the same answer, with no personal copies of a spreadsheet drifting apart.
Four working examples you can use right now. A version for your firm runs your methods and prints in your own template and sheet format.
Structural · AISC 360-22
Simply supported W-shapes: flexure, shear and deflection, a lightest-section search, and a full calc sheet.
Tested against the AISC Design Examples and Manual Table 3-2
Open the beam checker →Structural · AISC 360-22
Bolt groups in shear: spacing and edge distance, bolt shear, bearing and tear-out, slip resistance and block shear, with a layout drawing.
Tested against AISC Manual Tables 7-1, 7-3, 7-4, 7-5 and the AISC Design Examples
Open the bolt check →Inspection reports
Observations and photos by elevation in, a formatted inspection report out, set up for Philadelphia, New York City or Chicago.
Wording checked against PM-315, 1 RCNY §103-04 and Chicago §14A-6-603.2
Open the report builder →Or open it set up for New York City or Chicago.
Civil · NRCS TR-55
Pre- and post-development runoff and peak flow for the 1- to 100-year storms, the Pennsylvania CG-1 volume increase, and a detention estimate.
Tested against the TR-55 worked examples
Open the stormwater calc →Also built to order: beams and headers for wall removals, wood members, temporary works, fire escape certifications, special inspection and lab reports, reserve studies, and survey data processing.
Fixed price, agreed before any work starts.
You'll work directly with the two people who scope, build and deliver your tool. Call or email either of us.
Matt Samsonas
Philadelphia, PA
I'm the Tool Developer at SamsonasCalc and a mechanical engineering student. I build our calculation tools and test each one against published results, such as the AISC Design Examples and TR-55, before release. Every test case is public on our verification page. I also work with your engineers on the technical scope.
Joku Samsonas
Chicago, IL
I'm the Project Manager and Business Administrator at SamsonasCalc. I oversee every project from start to finish and keep it on the agreed scope, price, and schedule. My background is in direct sales, teamwork, and leadership, so I'm used to clear communication and quick follow-up. I'll keep you updated at every stage.