WTC Twin towerstruth how the South tower collapsed

In this photo we can analyze in detail the crash of an airplane into the southern wall of South Tower. The central fuselage hits approximately the 79th and 80th floors Notice the outer column number 417 It's reinforced structure that cut off the right wing from the fuselage This section supports the longitudinal and transverse floor trusses Right engine destroys a few of the floor trusses on the 82th floor. The central fuselage pierces the core gypsum boards between columns No. 801 And 1001 and penetrate into cavities of elevator shafts.

The core column number 901 cuts the central fuselage into two parts Core columns number 901 to 908 is deformed in the direction of movement of the central fuselage and the north wall creates a characteristic bulge. The core has been cut by thermite charges near the laser targeted floor . The molten core columns creates a local fire on this floor Load of the upper section of the core is rerouted through hat trusses on the tower roof to the outer columns. Now, the floor trusses is being cut off from the outer columns Overloaded columns have lost horizontal reinforcement from the removed floor trusses and break into the interior of the tower Note carefully where the point of impact of the aircraft and where the building broke Here is the crash of an airplane on the 79th and 80 floors The building is cracking several floors above the impact in zone that was been targeted by the laser.

The plane hit the building on several floors below targeted zone. Minor variations in targeting system.