FYI:
I work for a concrete delivery company in downtown atl. who used to be
called Williams Bros. (different name now)
3k psi runs $135.00 per yard, fiber adds $6.75 per yard,
then add in the fuel and enviromental fee of arond $50.00 per truck.
Patio's, Driveway's, Sidewalks, Footers, Slabs for home are all
poured with 3k psi.
Fiber WILL NOT STOP CRACKING, neither will WIRE.
Remember there are only two kinds of concrete,
1. Already cracked
2. going to crack