The search for is understandable but misguided. The risks—legal liability, malware, outdated information, and professional ethics—far outweigh the savings of $100 or less.

If you are working on a project that requires ASCE 113 by contract, none of these are legal substitutes. But for preliminary design or learning, they provide useful context.

ASCE Manuals and Reports on Engineering Practice No. 113 Substation Structure Design Guide

Websites offering "free PDF downloads" of engineering standards are often phishing or malware distribution hubs. Downloading a PDF can inject keyloggers, ransomware, or spyware into your work computer. A single click can compromise an entire office network.