Jurassic Gorilla https://jurassicgorilla.com
This photo was taken of Arnold Schwarzenegger around the time he was preparing for one of his Conan movies. They were likely assisting friends with a construction project as is very unlikely that Schwarzenegger or Columbu were doing construction work at that time to make ends meet.
Both Schwarzenegger and Columbu apparently did brick laying in Santa Monica or Venice area when they first arrived in the United States but it is unknown exactly how many jobs they actually did. Both had other sources of income at the time as well as being under contract with Joe Weider.