Clause references, not hand-waving
Each output line names the exact regulation, version, and clause number that produced it. Print the report; hand it to your reviewer.
Structural · Geotechnical · Site engineering
Calculations you can defend to a plan-check engineer.
Every formula, coefficient, and limit is annotated with its source clause. Pick your country's code pack; the engine follows that regulation.
- Calculators
- 206
- Country code packs
- 13
- Languages
- 11
- Verified against sources
- 5×
In practice
Built for the desk where the drawing gets signed.
Inputs on the left, clause-referenced results on the right. Nothing leaves your browser.
What makes this different
Verified against solved examples
No calculator ships without matching at least two independently published worked examples. Test cases live next to the code.
Versioned code packs
Regulations change. Your calculation carries the exact code-pack version it was run against, so a re-check three years from now still reproduces.
Your inputs stay on your machine
The engine runs in your browser. Project data is never uploaded — no server-side storage, no cloud round-trips.
Calculator categories
No calculators match this filter yet. Try a different search term or country.
Courses
Country-independent physics and design theory, organized as a curriculum — undergraduate through graduate level. These do not depend on a code pack; where a code does apply (RC design, seismic), the tool is clearly labelled.
Temel dersler
Ülkeden bağımsız fizik ve tasarım teorisi. Programlar değişir, bunlar değişmez.
1
Structural Analysis I & II
Simple beams, cantilevers, Gerber beams, trusses, cross method, Euler buckling, virtual work, slope-deflection, three-moment theorem.
4Mechanics of Materials
Normal stress, torsion, bending, cross-section properties, Mohr's circle, pressure vessels, von Mises / Tresca yield criteria.
2Structural Dynamics
SDOF/MDOF vibration, response spectra, Newmark/Duhamel integration, modal analysis.
3Finite Element Analysis
Direct stiffness method — bar, truss, beam, frame, and CST elements. Element formulation, assembly, boundary conditions, and dynamic FEM.
9Reinforced Concrete I & II
University-level RC theory beneath any single code pack — material models, flexure, shear, development length and P–M interaction. TS 500 and TBDY 2018 clause references.
5Steel Design — Worked Examples
17 solved ÇYTHYE 2018 / AISC 360 steel examples, cross-checked against guide values (≤1% deviation).
7Soil Mechanics
Effective stress and pore water pressure, consolidation settlement, over-consolidation — Terzaghi principles with working calculators.
8Foundation Design
Bearing capacity of shallow foundations, Terzaghi equation, eccentric loading and contact pressure, immediate settlement — with working calculators.
6Earthquake Engineering
TBDY 2018 equivalent lateral force method, load combinations with seismic effects, story drift limits, P-delta, seismic joints — with SAP2000 worked example.
10Civil Engineering Design I & II
Integrated design studio: one building, six chained stages — mass, seismic load, column load, footing, settlement, beam reinforcement. Ties every other module together.
20Core Concepts — The Theory Behind the Tools
The ideas connecting dozens of calculators — static determinacy, the stiffness method, elastic vs. plastic design.
Yazılım eğitimi
Beş analiz programı, altı BIM aracı ve MATLAB/Python. Üreticinin resmî dokümantasyonuyla, sürüm etiketli.
13
ETABS — Applied Training
Dedicated course: theory + step-by-step program instructions (verified menu paths) + easy/medium/hard/very-hard worked examples. Equivalent Lateral Force method fully built; more topics in progress.
14SAP2000 — Applied Training
Dedicated SAP2000 course matching the ETABS course in depth. Sourced course, not yet built.
19ideCAD Structural & Architectural
Version-labelled menu paths sourced from help.idecad.com.tr for Turkey's most widely used package; TBDY 2018 workflows and an explicit list of unverified points.
18ABAQUS — Finite Element Analysis
Method-focused: element formulation, material models, implicit/explicit, mesh convergence. Benchmark problems ready; full course sourced, not yet built.
21ANSYS — Finite Element Analysis
Workbench workflow, element types, mesh quality and verification practice. Sourced from ANSYS Help, version-labelled; benchmark problems shared with the fea/ section.
22Building Information Modelling (BIM)
Revit, Tekla, Navisworks and the IFC exchange chain; moving models into analysis software and the list of what gets lost. Every page version-labelled, every exercise with a measurement form.
11MATLAB for Structural Engineers
Scripted stiffness-method, FEM, modal analysis and Newmark time-history implementations — with downloadable .m and .py files. Covered by the MATLAB / Python module.
Uygulama ve araştırma
Ölçümden hesaba, çizimden metraja, yayından hata bulmaya.
16
Structural Health Monitoring — Frequency from Measured Data
Sampling/aliasing, FFT/PSD, modal parameter extraction — closed-loop verification with synthetic systems.
17Takeoff — Automatic Quantities from DXF, PDF, IFC
DXF takeoff and earthwork calculations — deterministic geometric measurement, not a black-box estimate, entirely in-browser.
15Source Auditing — Finding Errors in Published Content
How to critically read published engineering content — five red flags, taught through real cases from this project's own history.
12Construction Management
Earned value analysis (PV, EV, AC; CPI/SPI; EAC and TCPI) and critical path scheduling — with a working calculator and live CPM simulation.
Referans ve destek
Yönetmelik, soru-cevap ve makaleler.
23
Code Reference
TBDY 2018, zoning and parking, shelters, fire escape routes — bilingual, clause-numbered reference pages from the Official Gazette text.
24Ask a Question
Not a forum: your question becomes a verified answer page with its source and calculation shown, and stays in the archive.
25Finite Elements — Shared Topics
Unit consistency, NAFEMS benchmark problems and verification culture. The common ground linking five programs.
26Articles
Measured findings and method notes; every article is tied to a tool, a source or an error analysis.
27Daily Question
One sourced concept question a day, with explanation and textbook citation. Streak tracking stays in your browser.
28Engineering Humour
All the "site notes" from the bottom of every page plus the Architect–Engineer Dictionary: same word, two professions, two meanings.
29Structural Glossary
100 terms with a short definition and, where relevant, a link to the calculator or simulation that uses it.
30Lesson Sets (for teachers)
Pick tools, simulations and the daily question; get one link to share, or a printable worksheet. No account, no server.
31Code Comparison Mode
The same RC section solved by TS 500, ACI 318-19, EC2 (UK NA) and NBR 6118 side by side — each result computed by that code's own already-verified page, not re-derived here.
32Claude Mastery Book — AI for Engineers
A full Turkish book on working with Claude, written for engineers and architects: how the model works, why it hallucinates, which product does what, prompt engineering, production pipelines, and finally responsibility — verification, privacy, academic integrity, limits.
33Verification Console
Paste support reactions or modal mass ratios from ETABS, SAP2000, ProtaStructure or ideCAD; equilibrium and arithmetic consistency are checked against physics, not against any code. Your data never leaves the browser.
34Case Studies — Damage Mechanisms
Short-column and soft-storey failure mechanisms, as documented across multiple earthquakes in peer-reviewed and institutional reconnaissance literature — no real building, firm or person named.
35Architecture Tools — Zoning, Fire Safety, Parking, Shelter
KAKS/TAKS, stairs, escape routes, fire compartments, net/gross area, parking need, heat loss, solar shadow, natural lighting, accessible ramps — the early checks before a project reaches an engineer.
36Architecture — Structural Readings
Why famous buildings actually stand up, told in architectural language: Sydney's shells, the Pantheon's dome, Gaudí's hanging chain, Hagia Sophia's thrust, the Eiffel Tower's curve, Brooklyn's cables, Taipei 101's pendulum, Süleymaniye's half-domes, Selimiye's eight piers, Alanya's octagon, Fallingwater's creep.
How the reference system works
Every calculator page has three parts: the input form, the computed result, and a citation panel. The citation panel lists each formula used, with the source regulation, version year, and clause or equation number.
Foreign code standards (ACI, AISC, DIN, BS, GB, JIS) are copyrighted; we cite clause numbers only, never reproduce clause text. Turkish regulations published in the Official Gazette are public domain and may be quoted directly.
As,min = 0.8 · (fctd/fyd) · bw · d
TS 500:2000 · §7.3 · Eq. 7.3
Vc = 0.17 · λ · √f'c · bw · d
ACI 318-19 · §22.5.5.1 · Eq. 22.5.5.1Legal notice
Preliminary calculation tool. Results are for preliminary sizing and cross-check only. Final design, sealed responsibility, and permit submissions require the full official text of the referenced regulations and the review of a licensed engineer.