The site Setkov Stig85 provides a catalog of solutions organized by chapters and "Practical Works" (e.g., Work 1, Work 2, etc.) matching the structure of the textbook.

Setkov's manual is a standard text for Russian technical colleges (technikums) and covers:

Building shear and moment diagrams for beams.

Equilibrium of force systems and determining support reactions.

There are dedicated social media groups such as Reshenie zadach po tekhnicheskoi mekhanike that claim to house over 280 solutions specifically from Setkov's collection.

Platforms like Isopromat.ru offer the full PDF collection of tasks and examples for topics like reaction forces and beam calculations.