The Beam could be made in cad with an extrusion.
Doesn't need to be... he used MEP which includes beam objects (if I remember correctly).
The Pipe could be Lofted, as could your wires....
Wires.... maybe. Pipes.... NO! It's all part of MEP. You pick the size and material and you're done.
And perhaps don't export the MEP stuff to autocrap. Just use those entities (or short versions of same) for your details.
MEP IS AutoCAD.
I can't open the drawing because it's later than 2008.
But as for "how long should it take" to create? That depends on your skill level and what you have for a base library of MEP objects. Based on my experience, I'd say probably no longer than 1 hour. You'll most likely spend more time tweaking things than actually modeling it.