API 650 14th Edition Changes Explained — What Engineers Need to Know
The 14th Edition introduced significant updates to Appendix E seismic, wind girder requirements, Appendix F, and material allowables. Here's what changed and how it affects your designs.
Seismic Design for API 650 Tanks: A Practical Guide
Why tanks behave differently from buildings, the two-mass impulsive/convective model, and how the J-ratio determines whether anchors are required.
Wind Girder Design per API 650 §5.9 — Top and Intermediate Rings
How to calculate maximum spacing H1(max) for intermediate wind girders, select the required section modulus Zw, and choose a suitable ring section.
Shell Course Thickness Design — One-Foot Method vs Variable Design Point
The governing equation, when to use the variable design point method, corrosion allowance pitfalls, and how to read the results table.
Anchorage Design for API 650 Tanks — J-Ratio to Bolt Sizing
When anchors are required, how the J-ratio governs the design path, and how to size anchor bolts per API 650 Appendix E.6.2.
Your First Tank Design in 10 Minutes — Getting Started with TankCode 650
From logging in to exporting a PDF — a complete walkthrough of the full design workflow for a new API 650 tank design.
How to Get Access to TankCode 650 — Trial, Standalone & Enterprise
The three access paths — request a demo, trial account, and full licence — and answers to the most common access questions from engineering teams.
Shell Module Walkthrough — Inputs, Calculations, and Results Table
A complete walkthrough of the shell thickness module: what to enter, how to read the results table, and how to verify calculated thicknesses against the code.
Seismic Module Walkthrough — From Inputs to Anchorage Check
Entering site parameters, interpreting impulsive and convective outputs, the J-ratio anchorage check, and freeboard verification — all in one walkthrough.
PDF Report Export — Audit-Ready API 650 Calculations in One Click
How to generate, customise, and export a complete API 650 14th Edition calculation report with clause references, intermediate steps, and a reviewer-ready cover page.