Code of Massachusetts Regulations
780 CMR - STATE BOARD OF BUILDING REGULATIONS AND STANDARDS
Chapter 16 - Structural Design
Section 1608 - SNOW LOADS
Subsection 1608.2 - Ground snow loads
The ground snow loads to be used in determining the design snow loads for roofs shall be determined in accordance with ASCE 7 or Figure 1608.2 for the contiguous United States and Table 1608.2 for Alaska. Site-specific case studies shall be made in areas designated "CS" in Figure 1608.2. Ground snow loads for sites at elevations above the limits indicated in Figure 1608.2 and for all sites within the CS areas shall be approved. Ground snow load determination for such sites shall be based on an extreme value statistical analysis of data available in the vicinity of the site using a value with a 2-percent annual probability of being exceeded (50-year mean recurrence interval). Snow loads are zero for Hawaii, except in mountainous regions as approved by the building official.
TABLE 1608.2 GROUND SNOW LOADS, pg , FOR ALASKAN LOCATIONS
| LOCATION |
POUNDS PER
SQUARE FOOT |
LOCATION |
POUNDS PER
SQUARE FOOT |
LOCATION |
POUNDS PER
SQUARE FOOT |
| Adak | 30 | Galena | 60 | Petersburg | 150 |
| Anchorage | 50 | Gulkana | 70 | St. Paul Islands | 40 |
| Angoon | 70 | Homer | 40 | Seward | 50 |
| Barrow | 25 | Juneau | 60 | Shemya | 25 |
| Barter Island | 35 | Kenai | 70 | Sitka | 50 |
| Bethel | 40 | Kodiak | 30 | Talkeetna | 120 |
| Big Delta | 50 | Kotzebue | 60 | Unalakleet | 50 |
| Cold Bay | 25 | McGrath | 70 | Valdez | 160 |
| Cordova | 100 | Nenana | 80 | Whittier | 300 |
| Fairbanks | 60 | Nome | 70 | Wrangell | 60 |
| Fort Yukon | 60 | Palmer | 50 | Yakutat | 150 |
| For SI: 1 pound per square foot = 0.0479 kN/m2. |
FIGURE 1608.2 GROUND SNOW LOADS, pg, FOR THE UNITED STATES (psf)
FIGURE 1608.2- continued GROUND SNOW LOADS, pg, FOR THE UNITED STATES (psf)
