The title says it all: if you've spent hours browsing the web for simple design icons for diagrams and architectural representation - a relevant tool to optimize organization, analysis, and communication - then this universal online library from The Noun Project will be very useful.
Icons: The Latest Architecture and News
The Noun Project: Over a Million Downloadable Icons for Your Architectural Diagrams
https://www.archdaily.com/902865/the-noun-project-over-a-million-downloadable-icons-for-your-architectural-diagramsFabian Dejtiar