ZIP Code 29920
Beaufort County, South Carolina — St Helena Island
What This Means
Beaufort County, South Carolina has a light ground snow load of 5 PSF per ASCE 7-22. At this level, most standard residential roofs are designed to handle the load without issue. However, flat or low-slope roofs should still be checked for drifting and sliding snow.
Snow Load Details
| ZIP Code | 29920 |
| County | Beaufort |
| City | St Helena Island |
| State | South Carolina (SC) |
| Ground Snow Load | 5 PSF — Light |
| Classification Range | 1 - 20 PSF |
| Data Quality | Measured |
Source: ASCE 7-22 ground snow load polygons via ArcGIS
Roof Snow Load Calculator
ASCE 7-22 flat roof formula: pf = 0.7 × Ce × Ct × Is × pg
Your ground snow load (pg): 5 PSF
ⓘ Simplified estimate for flat roofs. Sloped roofs, drift zones, and unbalanced loads need additional calculations. Consult a structural engineer for final design.
Beaufort County Snow Load Map
Counties colored by snow load classification. Gray = No Load, Blue = Light, Amber = Moderate, Orange = Heavy, Red = Extreme, Purple = Case Study.
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Frequently Asked Questions
What is the ground snow load for ZIP code 29920?
ZIP code 29920 is in Beaufort County, South Carolina, with a ground snow load of 5 PSF, classified as light per ASCE 7-22.
Is my roof strong enough for snow in 29920?
With a light ground snow load of 5 PSF, standard residential construction typically handles this load, but verify with your local building code.
What county is ZIP code 29920 in?
ZIP code 29920 is in Beaufort County, South Carolina (SC).