// CODE SNIPPET
1604.5.2 Importance Factors
JUMP TO FULL CODE CHAPTER
Importance factors for snow, wind and seismic loads shall be determined in accordance with Table 1604.5.2 based on the Structural Occupancy Category or Risk Category assigned in accordance with Table 1604.5.
TABLE 1604.5.2 IMPORTANCE FACTORS
TABLE 1604.5.2 IMPORTANCE FACTORS
| STRUCTURAL OCCUPANCY/RISK CATEGORY | SNOW IMPORTANCE FACTOR, I | WIND IMPORTANCE FACTOR, I | SEISMIC IMPORTANCE FACTOR, I |
| I | 0.80 | 0.87 | 1.00 |
| II | 1.00 | 1.00 | 1.00 |
| III | 1.10 | 1.15 | 1.25 |
| IV | 1.20 | 1.15 | 1.50 |
Related Code Sections
1604.5.2 Structural Design, Importance Factors
Importance factors for snow, wind and seismic loads shall be determined in accordance with Table 1604.5.2 based on the Structural Occupancy Category ...
NYC Building Code 2014 > 16 Structural Design > 1604 General Design Requirements > 1604.5 Structural Occupancy Category > 1604.5.2 Importance Factors
1604.5.2 Structural Design, Importance Factors
Importance factors for snow, ice, wind and seismic loads shall be determined in accordance with ASCE 7, Table 1.5-2 based on the risk category ...
NYC Building Code 2022 > 16 Structural Design > 1604 General Design Requirements > 1604.5 Risk Category > 1604.5.2 Importance Factors
1609.5 Structural Design, Importance Factor
Buildings and other structures shall be assigned a wind load importance factor, I , in accordance with Table 1604.5.2 based on the Structural ...
1613.1.1 Structural Design, Seismic Importance Factor
The value for the seismic load importance factor, I , used in the calculation of E shall be determined in accordance with Table 1604.5.2 based ...
NYC Building Code 2014 > 16 Structural Design > 1613 Earthquake Loads > 1613.1 Scope > 1613.1.1 Seismic Importance Factor
1608.3.3 Structural Design, Snow Load Importance Factor
The value for the snow load importance factor, I s , used in the calculation of r f shall be determined in accordance with Table 1604.5.2 ...
NYC Building Code 2008 > 16 Structural Design > 1608 Snow Loads and Thermal Loads > 1608.3 Flat Roof Snow Loads > 1608.3.3 Snow Load Importance Factor