ZIP Code 27524
Johnston County, North Carolina — Four Oaks
What This Means
Johnston County, North Carolina has a light ground snow load of 10 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 | 27524 |
| County | Johnston |
| City | Four Oaks |
| State | North Carolina (NC) |
| Ground Snow Load | 10 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): 10 PSF
ⓘ Simplified estimate for flat roofs. Sloped roofs, drift zones, and unbalanced loads need additional calculations. Consult a structural engineer for final design.
Johnston County Snow Load Map
Counties colored by snow load classification. Gray = No Load, Blue = Light, Amber = Moderate, Orange = Heavy, Red = Extreme, Purple = Case Study.
Check Another ZIP Code
Nearby ZIP Codes
Frequently Asked Questions
What is the ground snow load for ZIP code 27524?
ZIP code 27524 is in Johnston County, North Carolina, with a ground snow load of 10 PSF, classified as light per ASCE 7-22.
Is my roof strong enough for snow in 27524?
With a light ground snow load of 10 PSF, standard residential construction typically handles this load, but verify with your local building code.
What county is ZIP code 27524 in?
ZIP code 27524 is in Johnston County, North Carolina (NC).