Found this: 918.4 Location. Individual and branch-type air admittance valves shall be located a minimum of 4 inches (102 mm) above the horizontal branch drain or fixture drain being vented. Stack-type air admittance valves shall be located not less than 6 inches (152 mm) above the flood level rim of the highest fixture being vented. The air admittance valve shall be located within the maximum developed length permitted for the vent. The air admittance valve shall be installed not less than 6 inches (152 mm) above insulation materials.
S-traps above and mechanical vents below. Bogus? Toilet drain with mechanical vent. Bogus? A tub drain had a m vent too. Click to Enlarge 61.56 KB Click to Enlarge 57.99 KB Click to Enlarge 70.35 KB
Thanks guys. Just seemed kind of big for a new house. My son did a big slab patio in his back yard a while back. He's an engineer. Put a bunch of rebar in it. No cracks, no cracks, no cracks, then I saw them starting the other day. So sad.
There was this one cover in the side yard. I dug down a ways and nothing. Stuffed my screw driver down and hit something about 4 inches down. Same cap in driveway. What are they for? Click to Enlarge 41.37 KB Click to Enlarge 84.78 KB Click to Enlarge 22.4 KB
This crack runs all the way across this 9-2014 built home garage floor. No displacement. Is it a problem? Click to Enlarge 31.05 KB Click to Enlarge 39.87 KB Click to Enlarge 91.25 KB
Seems like I remember reading about these solo walls in bathrooms need to be ventilated in order to not get interior moisture damage. Is that true? Click to Enlarge 24.35 KB
Seems like I see panels frequently that are rated higher than their main breakers. I report on what the panel is rated for and what the main breaker is at.
So here's this panel with no labels. Looks like a 125 amp type to me. Down where the circuit directory says microwave there is now a 100 amp breaker. This has to be overloading the panel, right?? Click to Enlarge 36.2 KB Click to Enlarge 25.97 KB