Kafka DesignStructural Eng Tools |
| Gabriel Kafka |
Open source column load take-down app, especially useful for tall concrete buildings.
NYU Tandon thesis project (Advisor: Masoud Ghandehari). A low-cost cellular accelerometer node for structural health monitoring of transmission towers in Puerto Rico — Nordic Thingy:91 X with onboard ADXL367, LTE-M telemetry, a solar-assisted power front end, and a Supabase / PostgREST cloud pipeline streaming triaxial acceleration as a continuous FIFO batch. Sensor viability was benchmarked against a LORD S-200 reference: calibrated magnitude correlation ≈ 0.955, RMSE ≈ 0.040 g, and FFT amplitude correlation ≈ 0.952 over 0–12.5 Hz.
Final Research Paper (PDF) · Reference-Sensor Viability Test
Interactive 3D visualization of the Hanson & Hanson (1968) eccentric-shear decomposition for slab–column punching, per ACI 318 §8.4.2.3.
Economic risk analysis for a 41-story concrete building. Monte Carlo
Parallel version to chapter 26 of the ASCE building code, but json,
so agents can use more efficiently and accurately. GitHub 
Note: this project is an artifact of a time where models couldn't accurately pull from bldg-code. gpt5.5 and opus 4.7. very accurately pull from building codes without "building-code-api's".
Demo of tributary area tool workflow. GitHub
Biaxial column interaction per ACI 318. Biaxial
Column Design 
This is useful for applying moments accurately, through shear walls
into mat foundations to design the reinforcement in the mat foundation.
App
that does this calc 
I am creating this concrete stress block plot as a foundation for
post tensioned design consideration. 
here is the
compressed further consideration 
Starting point for shear rail study 
Reference diagram for earthquake test loading. 
Download->ask your preferred ai what it does->design 2 way slabs by hand fast. No need to pay for that expensive FEA software. Download the Excel workbook here: 2-WAY SLAB FAST
Pulled from ASCE7-22 CH26-27 Mostly wind ingredients
Useful plot of Kz profile. 
Give it a try, especially useful for very large doubly reinforced beams BEAM DESIGN
ASCE7 CH28 Low Rise Wind Load Calculator Kaggle
I’ve made this so I/we never have to do a moment distribuition by hand again. Moment Distribuition Killer
Bloomberg Terminal for Structural Engineers. It doesn’t exist but it
should. Structural Terminal Link
This one is rough but its funny how often I find myself using it structural-analysis-2 Link 
Linkedin: Gabriel Kafka Linkedin
Hugging Face gabekafka huggingface
Sites: Structural Tools / Personal Projects / Portfolio