Calculate the opening in the wall

Employer
[no-member:pro]Viktor[/no-member:pro]Viktor
Project parameters
Type of cooperationOne-time project
SectionEngineering. Drawings
Prepaymentwithout prepayment
Payment methodsBank transfer, Electronic money
Acceptance of requestsclosed
Project description
Offering remote earnings. I am looking for a design engineer to calculate the opening in the brick wall.