At an elevation of 400 feet, Nashua’s ground snow load is 60 pounds per square foot (psf). Design snow loads on roofs are determined by multiplying the ground snow load by a series of modification factors specified in ASCE 7 and the building code.
The ultimate design wind speed is 120 mph. Reference IBC 2015 Fig. 1609.3 (1)
The maximum considered earthquake ground motion for Site Class B:
The 0.2 second spectral response. Reference IBC 2015, Fig.1613.1 (1)
The 1.0 second spectral response. Reference IBC 2015, Fig. 1613.1 (2)
Frost penetration shall be considered to extend to a minimum of 48” below grade
The 100 year, 1-hour rainfall is 2.5 inches Reference. IBC 2015, Figure 1611.1.