This is the underside of a concrete edge beam, does anyone know what would cause this pattern of discoloration in the concrete? It seems to match the bottom longitudinal reinforcement but not the stirrups which are at 8" o.c.
Curious to see how others are handling situations where plumbing sleeves are interfering with integrity bars, particularly when there's limited scope to relocate the sleeves due to parking spaces.
I have a 6" concrete unbonded topping slab /slab on grade which will be poured ontop of an elevated slab subject the wheel loads and exposed to the elements. I'm limiting control joints to around 14' to 15' o.c., but where I'm struggling to find any guidance is the spacing of expansion/isolation...
