Will my dad lose his construction job due to robots? if so, when?

Probably not anytime soon.

October 15, 2027 at 2:15pm

Whenever companies can afford a low-maintenance robot whose annual operating costs and maintenance are lower than that of salary, health-care, and liability for one human worker. I don't think that it will happen in the next 10-15 years, but after that? I am thinking...Cylons.

Depends on what kind of construction. They recently built a new bridge over the interstate highway here and they used a large robotic machine to perform the welding of the rebar.

never..do not worry assembly in a factory is a controlled environment out in the field its too random mankind is not smart enough to brace that challenged in programming yet and its not going to happen in YOUR lifetime either

Although robots can perform some menial tasks it is not likely that robots will replace humans on construction sites for the next 20+ years.  Robots are too expensive and too specialized for most non-repetitive tasks.