Wind, Snow and Seismic Zones for Clallam County
* For elevations greater than 600 ft above sea level, snow load = elev x 0.04
Example: 800 ft elevation = (800 x 0.04 = 32 psf snow load)
** All areas within 600 feet of the marine shoreline are exposure "D",
otherwise, exposure is "C". (IBC 1609.4.3)
** All areas within 1500 feet of the marine shoreline are exposure "D", otherwise, exposure is "C". (IRC R301.2.1.4(4))
Soil bearing pressure: 1500# p.s.i.
Frost depth: 12" min.
|
Area |
Wind: 3 Second Gust |
Wind: Fastest Mile |
Exposure |
Average Snow Load (<600´ Elev.) |
Seismic Design Category |
|
* |
|||||
|
Port Angeles |
100 MPH |
85 MPH |
C/(D**) |
25 PSF |
D2 |
|
Diamond Point |
100 MPH |
85 MPH |
C/(D**) |
25 PSF |
D1 |
|
Sequim |
100 MPH |
85 MPH |
C/(D**) |
25 PSF |
D1 |
|
Beaver |
110 MPH |
95 MPH |
C |
30 PSF |
D2 |
|
Pillar Point |
110 MPH |
95 MPH |
C/(D**) |
25 PSF |
D2 |
|
Clallam Bay/Sekiu |
110 MPH |
95 MPH |
C/(D**) |
25 PSF |
D2 |
|
Neah Bay |
120 MPH |
104 MPH |
C/(D**) |
30 PSF |
D2 |
|
La Push |
120 MPH |
104 MPH |
C/(D**) |
25 PSF |
D2 |
|
Forks |
110 MPH |
95 MPH |
C |
30 PSF |
D2 |
|
Lake Dawn/Foothills |
100 MPH |
85 MPH |
C |
* |
D2 |
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