Unless otherwise stated, all calculations are based on Allowable Stress Design (ASD) load combinations using loads from ASCE 7-10 Minimum Design Loads for Buildings and Other Structures. For wind, ASCE 7-10 calculations are based on 700-year-return-period “three-second gust” wind speeds between 110 and 195 mph. Snow loads are designed in accordance with ASCE7-10 for buildings in regions with ground snow loads between 0 and 70 psf. Both balanced and unbalanced snow load conditions are considered in design.