engineering
Firms, companies, and entities which perform services applying mathematics and science to practical endeavors.
An engineering firm is any company which performs calculations, technical design, and applications of physical and material science in the service of building objects and making practical processes run optimally.
The work applies technical calculations and physical or material science to a practical task. It can concern a built object or a process.
Construction performs physical building work. The engineering role concerns the technical service, even when the same firm also carries out construction.
