Daniel T Li Spreadsheets May 2026

Daniel T. Li, Ph.D., S.E., is a prominent figure in the field of structural engineering, best known for developing an extensive library of professional structural design spreadsheets through his company, Engineering International Inc..

Steel Design: Extensive tools for I-beams, wide flange members, and plate girders based on AISC Manual specifications.

Where to Learn More: The Daniel T. Li Spreadsheet Syllabus

If you want to think like Daniel T. Li, do not just watch YouTube tutorials. Study these resources: daniel t li spreadsheets

compliance and practical application in real-world projects. Core Functionality and Design

Concrete Design: Specialized modules for Two-Way Slabs, Voided Biaxial Slabs, and Special Shear Walls based on ACI 318-11 and CBC standards. Daniel T

Ironically, no. Li argues that AI and Python make his principles more critical. When you embed a Python script or an =GPT() call in a cell, the fragility multiplies. You now have non-deterministic outputs. His referential integrity and separation of layers become essential to debugging whether an error came from a Python library update or a wrong cell reference.

Purpose: DTL uses passwords to protect his intellectual property and to ensure the reliability of the formulas, preventing unauthorized modifications that could lead to engineering errors. Steel Design: Extensive tools for I-beams, wide flange

Mobile Optimization: Layouts that remain readable on a smartphone. 3. Modular Templates