Companies were dispatched for the dwelling fire, 53-9 arrived reporting heavy fire 1st floor with fire through the roof of the B/C corner. Crews led off with 1-3/4 lines. 53-9 req the 2nd alarm for manpower and due to the long lay for a supply line(approx 1800'). Interior reported fire was running the roof. They had a collapse on the "C" side near the B/C corner, with heavy fire in the basement and through the roof. Crews were removed from the bldg for an exterior attack. Numerous exterior handlines were placed in svc. The fire was placed under control at approx the 1hr 10 minute mark. Crews remained o/s hitting hot spots and opening up for overhaul.