In this scene of Stranger Things, the Demodogs knock down a reinforced steel door, implying that the hinges were destroyed. According to this page, each hinge of a door like that weighs 30 pounds or 13.6078 kg, since there are three of them it would be 40.8234 kg in total. Using the 7850 kg/m³ density of steel, this would give us a volume of 5200.433 cc. Using the 358 J/cc fragmentation of steel, it would give us an AP of:
5200.433*358 = 1,861,755.014 Joules (9-B: Wall level)