LoadCalc
A fast, field-ready tool for checking material weights and support safety on jobsites.
About This Project
LoadCalc started as a market gap question: what do construction crews actually need on their phones that nobody has built well yet? Most load calculation tools are paywalled, require accounts, or weren't designed to be used with one hand in bad lighting. This was built to be none of those things — no login, no fees, works offline, readable on a small screen.
How It Was Built
The initial concept came from an AI-assisted ideation session focused on underserved niches in field safety tooling. From there, the build went through multiple rounds of structured review — security, functionality, accessibility, and edge cases — using Claude Code as a development partner. The result is vanilla JavaScript with no framework dependencies, a PWA service worker for offline use, full unit test coverage, and touch targets sized for gloved hands. The material library references OSHA load classifications and includes handling notes sourced from common site practice.
FAQ
Q: Is LoadCalc an engineering-certified calculator?
A: No. It is a reference and field-check tool.
Always confirm load decisions with a qualified supervisor or
engineer before acting on them.
Q: Does it work offline?
A: Yes. Once loaded, it installs as a progressive
web app and runs fully without internet access.