Ada |
|
Seismic Design Category |
C |
|
Ground
Snow Load |
20 psf |
|
Wind
Load |
90 mph |
|
Live
Load |
25 psf |
|
Frost
Depth |
24" |
|
Elevation |
Varies. |
|
Exposure |
|
|
|
|
Seismic Design Category |
Varies. |
|
Ground
Snow Load |
Varies. |
|
Wind
Load |
Varies. |
|
Live
Load |
Varies. |
|
Frost
Depth |
Varies. |
|
Elevation |
Varies. |
|
Exposure |
|
Camas |
|
Seismic Design Category |
Zone 2 |
|
Ground
Snow Load |
153 psf |
|
Wind
Load |
90 mph |
|
Live
Load |
100 psf |
|
Frost
Depth |
24 in |
|
Elevation |
Maximum building height
is 35 ft |
|
Exposure |
|
Canyon
|
|
Seismic Design Category |
B |
|
Ground
Snow Load |
25 psf |
|
Wind
Load |
90 mph |
|
Live
Load |
|
|
Frost
Depth |
24 in |
|
Elevation |
|
|
Exposure |
C |
Clearwater
|
|
Seismic Design Category |
C |
|
Ground
Snow Load |
|
|
Wind
Load |
90 mph |
|
Live
Load |
Minimums per code |
|
Frost
Depth |
Varies with elevation |
|
Elevation |
Varies from approx. 1000 ft at Orofino to over 3000 ft in areas |
|
Exposure |
|
Gooding |
|
Seismic Design Category |
C |
|
Ground
Snow Load |
30 psf |
|
Wind
Load |
90 mph |
|
Live
Load |
30 psf |
|
Frost
Depth |
24 in |
|
Elevation |
3500 ft |
|
Exposure |
C |
Fremont
|
|
Seismic Design Category |
D1 |
|
Ground
Snow Load |
50/90/170 psf |
|
Wind
Load |
90 mph, 3 sec gusts |
|
Live
Load |
Snow 35psf/70psf/90psf/128psf over load as per IBC/IRC |
|
Frost
Depth |
32 in |
|
Elevation |
5000-7000 ft |
|
Exposure |
|
Jerome
|
|
Seismic Design Category |
C |
|
Ground
Snow Load |
|
|
Wind
Load |
90 mph |
|
Live
Load |
30 psf |
|
Frost
Depth |
24 in |
|
Elevation |
4048 ft |
|
Exposure |
|
Ketchum
|
|
Seismic Design Category |
D with 35% snow load at time of earthquake. Ss = 73%, S1 = 20.5% or use site specific criteria |
|
Ground
Snow Load |
120 psf |
|
Wind
Load |
90 mph |
|
Live
Load |
100-psf with 100-plf line load @ eaves and unbalanced loading per ASCE7 |
|
Frost
Depth |
24 in |
|
Elevation |
|
|
Exposure |
|
Latah
|
|
Seismic Design Category |
B |
|
Roof
Snow Load |
Zones of 30#, 40#, 60#, 80# depending on locations
(see County snow load map) |
|
Wind
Load |
90 mph/3 sec. gusts |
|
Live
Load |
Soil bearing value 1500 psf |
|
Frost
Depth |
30 in |
|
Elevation |
Range approx.
1400-5000 ft |
|
Soils |
U.S. Dept. of Agriculture, Soil Survey of Latah
County Area, Idaho, April 1981 |
Minidoka
|
|
Seismic Design Category |
C |
|
Ground
Snow Load |
25 psf |
|
Wind
Load |
90 mph |
|
Live
Load |
30 psf |
|
Frost
Depth |
24 in |
|
Elevation |
|
|
Exposure |
|
Owyhee |
|
Seismic Design Category |
B |
|
Ground
Snow Load |
20 psf |
|
Wind
Load |
90 mph |
|
Live
Load |
Roof snow load below 6000 ft. 25 psf. Above 6000
ft. 35 psf |
|
Weathering |
Severe |
|
Frost
Depth |
24 in |
|
Termite |
Slight to Moderate |
|
Decay |
None to Slight |
|
Winter Design Temp |
10 Degree F |
|
Ice
shield
Under- layment |
Not required |
|
Flood
Hazards |
FIRM maps as currently adopted |
|
Air
Freezing Index |
980 |
|
Mean
Annual Temp |
51 Degrees F |
|
Elevation |
|
|
Exposure |
|
Power
|
|
Seismic Design Category |
Group I, Site Class D, Design Category D |
|
Ground
Snow Load |
45 psf |
|
Wind
Load |
90 mph |
|
Live
Load |
30psf |
|
Frost
Depth |
30 in |
|
Elevation |
4600-5200 ft |
|
Exposure |
|
Teton
|
|
Seismic Design Category |
D1 |
|
Ground
Snow Load |
60 -130 psf |
|
Wind
Load |
90 mph |
|
Live
Load |
|
|
Frost
Depth |
32 in |
|
Elevation |
6000 ft |
|
Exposure |
|
Twin Falls
|
|
Seismic Design Category |
C |
|
Ground
Snow Load |
30 psf |
|
Wind
Load |
90 mph |
|
Live
Load |
10 psf |
|
Frost
Depth |
24 in |
|
Elevation |
2900-4100 ft |
|
Exposure |
|
Weiser |
Seismic Design Category |
C |
Ground
Snow Load |
30 psf |
Wind
Load |
90 mph |
Live
Load |
Per 2009 IRC and 2009 IBC |
Weathering |
Severe |
Frost
Depth |
24 in |
Termite |
|
Decay |
|
Winter Design Temp |
|
Ice
shield
Under- layment |
|
Flood
Hazards |
FIRM Maps Effective date June 16, 2009 |
Air
Freezing Index |
980 |
Mean
Annual Temp |
50 Degrees F |
Elevation |
2129 |
Exposure |
|
Whitman
|
|
Seismic Design Category |
B |
|
Ground
Snow Load |
30 psf |
|
Wind
Load |
85 mph |
|
Live
Load |
IBC IRC |
|
Frost
Depth |
32 in. Ice shield under-layment required.
Mean annual temp 42 degrees. |
|
Elevation |
|
|
Exposure |
|
|
|
|
Acequia
|
|
Seismic Design Category |
C |
|
Ground
Snow Load |
25 psf |
|
Wind
Load |
90 mph |
|
Live
Load |
30 psf |
|
Frost
Depth |
24 in |
|
Elevation |
|
|
Exposure |
|
Ammon
|
|
Seismic Design Category |
D1 |
|
Ground
Snow Load |
50 psf |
|
Wind
Load |
90 mph, 3 sec gust |
|
Live
Load |
Per building code |
|
Frost
Depth |
30 in |
|
Elevation |
|
|
Exposure |
|
Blackfoot
|
|
Seismic Design Category |
Category C; Site Class |
|
Ground
Snow Load |
30 psf |
|
Wind
Load |
Exposure C 90mph/105, 3 sec gust |
|
Live
Load |
30 psf |
|
Frost
Depth |
30 in |
|
Elevation |
4488 ft |
|
Exposure |
|
Boise
|
|
Seismic Design Category |
2003 IRC is Design Category C. 2003 IBC is
based on Section 1614 |
|
Ground
Snow Load |
Per local ordinance it is 20 psf with
further statement that snow loads shall be determined per Section 7 of ASCE 7, but the design roof load shall not be less than a uniform snow load of 25 psf |
|
Wind
Load |
90 mph for both 2003 IRC and 2003 IBC |
|
Live
Load |
per 2003 IRC and 2003 IBC |
|
Frost
Depth |
24 in |
|
Elevation |
2842 ft |
|
Exposure |
|
Caldwell
|
|
Seismic Design Category |
B |
|
Ground
Snow Load |
20 psf |
|
Wind
Load |
90 mph |
|
Live
Load |
25 psf |
|
Frost
Depth |
24 in |
|
Elevation |
|
|
Exposure |
|
Chubbuck
|
|
Seismic Design Category |
D1 |
|
Ground
Snow Load |
45 psf |
|
Wind
Load |
70 mph and 90 mph, 3 sec gust |
|
Live
Load |
36 psf |
|
Frost
Depth |
36 in |
|
Elevation |
4470 ft |
|
Exposure |
|
Coeur d'Alene
|
|
Seismic Design Category |
C |
|
Ground
Snow Load |
60 psf |
|
Wind
Load |
90 mph, 3 sec gusts |
|
Live
Load |
40 psf |
|
Frost
Depth |
24 in |
|
Elevation |
2128-2860 ft |
|
Exposure |
|
Gooding |
|
Seismic Design Category |
C |
|
Ground
Snow Load |
30 psf |
|
Wind
Load |
90 mph |
|
Live
Load |
30 psf |
|
Frost
Depth |
24 in |
|
Elevation |
3500 ft |
|
Exposure |
C |
Hailey
|
|
Seismic Design Category |
D1 |
|
Ground
Snow Load |
143 psf |
|
Wind
Load |
90 mph |
|
Live
Load |
100 psf |
|
Frost
Depth |
24 in |
|
Elevation |
Approx. 5600 ft |
|
Exposure |
|
Hayden |
|
Seismic Design Category |
C |
|
Ground
Snow Load |
60 psf |
|
Wind
Load |
90 mph, 3 second gusts |
|
Live
Load |
40 psf |
|
Frost
Depth |
24 in |
|
Elevation |
2128-2860 ft |
|
Exposure |
|
Heyburn
|
|
Seismic Design Category |
C |
|
Ground
Snow Load |
25 psf |
|
Wind
Load |
90 mph |
|
Live
Load |
30 psf |
|
Frost
Depth |
24 in |
|
Elevation |
|
|
Exposure |
|
Idaho Falls
|
|
Seismic Design Category |
D |
|
Ground
Snow Load |
47 psf |
|
Wind
Load |
90 mph |
|
Live
Load |
|
|
Frost
Depth |
30 in |
|
Elevation |
4710 ft |
|
Exposure |
C |
Lewiston |
|
Seismic Design Category |
|
|
Ground
Snow Load |
22 psf at 1550 feet elevation and 7 psf at 739 feet elevation |
|
Wind
Load |
90 mph, 3 sec gust, and 75 mph fastest mile |
|
Live
Load |
|
|
Frost
Depth |
24 in |
|
Elevation |
Lowest 739 ft, Highest 1550 ft |
|
Exposure |
|
Moscow
|
|
Seismic Design Category |
B |
|
Ground
Snow Load |
64 psf |
|
Wind
Load |
90 mph, 3 sec gust |
|
Live
Load |
Snow 40 psf, minimums per code |
|
Frost
Depth |
30 in |
|
Elevation |
2500 to 2800 ft |
|
Exposure |
C |
Nampa |
|
Seismic Design Category |
2003 IRC is Design Category B. 2003 IBC based on
Section 1614 |
|
Ground
Snow Load |
20 psf, collateral load of 5
psf |
|
Wind
Load |
90 mph for both 2003 IRC and 2003 IBC |
|
Live
Load |
per 2003 IRC and 2003 IBC |
|
Frost
Depth |
24 inches |
|
Elevation |
2600 ft. |
|
Exposure |
B |
Orofino |
|
Seismic Design Category |
B |
|
Ground
Snow Load |
25 psf |
|
Wind
Load |
90 mph |
|
Live
Load |
25 psf |
|
Frost
Depth |
12 in |
|
Elevation |
1005 ft |
|
Exposure |
|
Paul |
Seismic Design Category |
C |
Ground
Snow Load |
25 psf |
Wind
Load |
90 mph |
Live
Load |
30 psf |
Frost
Depth |
24 in |
Elevation |
|
Exposure |
|
Pocatello |
Seismic Design Category |
Default D or provide engineers calculations |
Ground
Snow Load |
45 psf |
Wind
Load |
Per IBC maps 90 mph 3 second gust |
Live
Load |
Default 35 lbs or provide engineers calculations |
Frost
Depth |
36 in |
Elevation |
4200 ft |
Exposure |
Default C of submit additional justification |
Rathdrum
|
|
Seismic Design Category |
C |
|
Ground
Snow Load |
56 psf |
|
Wind
Load |
90 mph |
|
Live
Load |
40 psf |
|
Frost
Depth |
24 in |
|
Elevation |
|
|
Exposure |
|
Rexburg
|
|
Seismic Design Category |
Depends upon rock profile. Usually D but can be C |
|
Ground
Snow Load |
50 psf |
|
Wind
Load |
90 mph |
|
Live
Load |
Same as IBC – IRC |
|
Frost
Depth |
36 in |
|
Elevation |
4865-5080 ft |
|
Exposure |
|
Rupert |
|
Seismic Design Category |
C |
|
Ground
Snow Load |
25 psf |
|
Wind
Load |
90 mph |
|
Live
Load |
30 psf |
|
Frost
Depth |
24 in |
|
Elevation |
|
|
Exposure |
|
Salmon |
|
Seismic Design Category |
D1, C & B |
|
Ground
Snow Load |
35 psf minimum, 10 psf per 1,000 feet of elevation over 4,000 feet |
|
Wind
Load |
90 mph, 3 sec gust |
|
Live
Load |
|
|
Frost
Depth |
36” below finished grade |
|
Elevation |
2500-9000 ft |
|
Exposure |
|
Sandpoint |
Seismic Design Category |
C |
Ground
Snow Load |
104 psf |
Wind
Load |
90 mph |
Live
Load |
55 psf |
Frost
Depth |
24 in |
Elevation |
2075 ft |
Exposure |
|
Soda Springs
|
|
Seismic Design Category |
D |
|
Ground
Snow Load |
60 psf |
|
Wind
Load |
90 mph |
|
Live
Load |
|
|
Frost
Depth |
36 in |
|
Elevation |
5800-6000 ft |
|
Exposure |
|
Spirit Lake |
Seismic Design Category |
C |
Ground
Snow Load |
56 psf |
Wind
Load |
90 mph |
Live
Load |
40 psf |
Frost
Depth |
24in |
Elevation |
|
Exposure |
|
Sun Valley
|
|
Seismic Design Category |
D1or per IBC Chapter 16 |
|
Ground
Snow Load |
120 psf |
|
Wind
Load |
90 mph |
|
Live
Load |
|
|
Frost
Depth |
24 in |
|
Elevation |
5920 +/- |
|
Exposure |
B |
Twin Falls |
Seismic Design Category |
Design category C; Site class D |
Ground
Snow Load |
15 psf (IBC Fig. 1608.2) |
Wind
Load |
90 mph, 3 sec gust velocity |
Live
Load |
Per IBC, but Section 1608 is amended to include that the minimum uniformly distributed design load shall be 25 psf |
Frost
Depth |
24 in |
Elevation |
|
|
PO
Box 8224, Boise, ID 83707