>>57837537nta but The Empire State Building for example weighs around 365,000 tons, is 1250ft tall at the top floor and 1454ft tall at its peak.
Scaling up an even dainty, skinny/slender girl with a generously low estimate; let's say Sango is 5ft tall and weighs 80 pounds which is basically childlike weight, if scaled up to 1250ft tall, she would weigh 625,000 tons. Scaling her to the building's full height, she'd be 983,000 tons instead. If she had the weight of a normal girl, she'd be much heavier than either of those too. If Sango were to sit on an equally sized building, she'd probably fall right through it as it collapsed beneath her since the upper/top floors of buildings aren't designed to carry as much weight, plus the act of sitting down would make her even heavier at the instant her weight landed upon it; moreso if she plopped down or performed any forceful action
>>57837537I'm not sure if any smallish buildings have their dimensions publicly available but I don't think there's any chance of holding up a significantly huge girl. I guess maybe if there was a building that had the base and foundations of a skyscraper and all that entails but without the hundreds of floors on top of it and if the entire structure including the ceiling were made to be as sturdy and if Sango or whoever were house sized instead of skyscraper sized