Man-hours of an Oil & Gas Project

[arcpro]

What is the typical percentage of man-hours during EPCC of an Oil & Gas or Petrochemical Plant project?

[mechcolor]

For a typical Oil & Gas Project, the typical percentages of manhours are as follows:
Engineering: 25%
Procurement: 20%
Construction: 45%
Commissioning: 10%
Construction manhours sometimes differ a lot than the figure mentioned above due to many factors.