A building has six (6) levels as shown, with level 1 at the NGL. The weights of levels 6 to 1 are: 1200, 2700, 3000, 3000, 3000, and 3200, respectively, all in kN. The building is a special moment-resisting frame made of steel, located at Puerto Princesa; a storage facility of toxic wastes. Assuming that a fault line capable of producing a 6.7-magnitude earthquake is situated 7.5 km from the site, determine the lateral forces (effect of torsion not included) at each joint of the building per level. Soil profile at the site has 770 m/s shear wave velocity. Level 6 3 m Level 5 3.2 m Level 4 3.2 m Level 3 3.2 m Level 2 3.5 m Level 1 3.8 m