Couple things:
- I suggest 4"w block for the inside kennels.
- I would also add AT LEAST 2-3 floor drains down the center of the building, but you would be MUCH better off having a drain in the center of each kennel.
- You may not think it, but having built several animal shelters (commercial contractor), you will be better off in the long run to epoxy coat the kennel walls & floors so the urine & feces won't soak into the concrete. Concrete is porous & the standard sealants don't hold up to animals.
- Any metal used MUST be aluminum, stainless, or galvanized as urine, will corrode plain steel pretty fast.
- What heating/cooling are you going to provide or is this thing open-air, ie. no roof? I assume it has a roof since you have a bathroom...
I don't have time today, but if you want to email or IM me a complete list of what you want I will try and find time tomorrow to draw you a complete floorplan to (National) Code. State/Local code may be stricter but your Building Official can tell you. I'd mainly like to know how many pens you want, the internal dimensions you want for the pens, and if there are any over-all size constraints to the building.
Is this on Residential zoned property or Commercial?