Main wind force-resisting systems shall comply with the following:
- The building shall be designed for the following net lateral wind pressure to be applied to the horizontal projection of the building surfaces:
- From 0 to 100 feet (0 to 30 480 mm) elevation 20 psf (0.96 kN/m2).
- From 100 to 300 feet (30 480 to 91 440 mm) elevation 25 psf (1.2 kN/m2).
- An importance factor, I, shall be determined in accordance with Section 1609.5 and shall be applied to the pressures indicated above.