This is a really annoying sound. The UI shall provide a feature to disable the annoying beep sound. The attached wiki link proposes to disable Windows Sounds, but this disables all other Windows Sounds that serve a purpose outside of Autopipe. A suitable solution shall be to provide the user an option to only disable this sound in Autopipe Settings without affecting normal Windows use.

https://communities.bentley.com/products/pipe_stress_analysis/w/pipe_stress_analysis__wiki/30901/03-how-to-turn-off-windows-default-beep-sound-when-using-pan-and-zoom-commands-in-autopipe