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National Snow Load Information

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State Snow Load Information

Alabama

Use IBC 2003—0 psf-10 psf with Case Study Areas at higher elevations

Alaska

Use IBC 2003—25 psf-300 psf
—And—
State of Alaska has given Authority to Local Building Officials for determining required Snow Loads for their municipalities.

In addition, you can estimate/verify your snow loads by Using SNOTEL Data to Estimate Snow Load Amounts: http://www.id.nrcs.usda.gov/snow/data/geninfo/snowload.html & Alaska Data http://www.ak.nrcs.usda.gov/snow/

Arizona

Use IBC 2003—0 psf-15 psf with Case Study Areas
—And—
Contact Local Building Officials for determining required Snow Loads
—And—
There was a 1973 “Snow Load Data for Arizona” originally produced by the Structural Engineers Association of Arizona that is currently out of print.

In addition, you can estimate/verify your snow loads by Using SNOTEL Data to Estimate Snow Load Amounts: http://www.id.nrcs.usda.gov/snow/data/geninfo/snowload.html & Arizona Data http://www.az.nrcs.usda.gov/snow/

Arkansas

Use IBC 2003—5 psf-15 psf

California

Use IBC 2003—0 psf-450 psf with Case Study Areas at higher elevations
—And—
Contact County Building Officials for determining required Snow Loads
See list of county building official contacts

In addition, you can estimate/verify your snow loads by Using SNOTEL Data to Estimate Snow Load Amounts: http://www.id.nrcs.usda.gov/snow/data/geninfo/snowload.html & California Data http://www.ca.nrcs.usda.gov/snow/

Colorado

Use IBC 2003—10 psf-20 psf with Case Study Areas
—And—
Contact Local Building Officials for determining required Snow Loads
—And—
There was a 1971 “Snow Load Design Data for Colorado” originally produced by the Structural Engineers Association of Colorado that is currently out of print. They are presently working on an updated snow load report.

In addition, you can estimate/verify your snow loads by Using SNOTEL Data to Estimate Snow Load Amounts: http://www.id.nrcs.usda.gov/snow/data/geninfo/snowload.html & Colorado Data http://www.co.nrcs.usda.gov/snow/

Connecticut

Use IBC 2003—30 psf-40 psf

Delaware

Use IBC 2003—20 psf-25 psf

Florida

Use IBC 2003—0 psf

Georgia

Use IBC 2003—0 psf-10 psf with Case Study Areas at higher elevations

Hawaii

Use IBC 2003—0 psf with Case Study Areas
—And—
Contact Local Building Officials for snow loads for mountainous regions

Idaho

cover snapshot for Ground and Roof Snow Loads for Idaho publicationUse IBC 2003—10 psf-20 psf with Case Study Areas
—And—
Contact Local Building Officials for determining required Snow Loads
—And—

A publication can be purchased called Ground and Roof Snow Loads for Idaho, by R. L. Sack and A. Sheikh-Taheri, Published by the UI Department of Civil Engineering, 1986.

To request a copy, send a check for $22.50 (includes postage), payable to Department of Civil Engineering, University of Idaho, P.O. Box 441022, Moscow, ID 83844-1022. http://www.uidaho.edu/engr/cedept/publications.htm

In addition, you can estimate/verify your snow loads by Using SNOTEL Data to Estimate Snow Load Amounts: http://www.id.nrcs.usda.gov/snow/data/geninfo/snowload.html & Idaho Data http://www.id.nrcs.usda.gov/snow/

Illinois

Use IBC 2003—15 psf-30 psf

Indiana

Use IBC 2003—15 psf-30 psf with Case Study Areas
—And—
The Structural Engineers Association of Indiana and the Structural Engineers Association of Michigan are currently working on a Snow Load Recommendations for the “Case Study” areas for both States.

Iowa

Use IBC 2003—20 psf-40 psf

Kansas

Use IBC 2003—15 psf-25 psf

Kentucky

Use IBC 2003—15 psf-20 psf with Case Study Areas at higher elevations

Louisiana

Use IBC 2003—0 psf-5 psf

Maine

Use IBC 2003—50 psf-100 psf with Case Study Areas
—And—
Contact Local Building Officials for determining required Snow Loads

Maryland

Use IBC 2003—15 psf-30 psf with Case Study Areas
—And—
Contact Local Building Officials for determining required Snow Loads

Massachusetts

Use IBC 2003—25 psf-60 psf with Case Study Areas
—And—
Contact Local Building Officials for determining required Snow Loads

Michigan

The State has amended the snow load requirements from the IBC and a snow load map may be found at: http://www.michigan.gov/documents/cis_bcc_snow_40405_7.pdf
—And—
The Structural Engineers Association of Indiana and the Structural Engineers Association of Michigan are currently working on a Snow Load Recommendations for the “Case Study” areas for both States.

Minnesota

The State has amended the snow load requirements from the IBC and a snow load map may be found at: http://www.buildingcodes.admin.state.mn.us/printouts/snowload.pdf

Mississippi

Use IBC 2003—0 psf-10 psf

Missouri

Use IBC 2003—10 psf-20 psf

Montana

cover shot of publication titled Snow Loads for Structural Design in MontanaThe State has amended the snow load requirements from the IBC and states that “Snow loads shall be determined by the building official. In areas of the state outside of certified local government jurisdictions, the design snow load shall be based on the ground snow loads developed in "Snow Loads for Structural Design in Montana", authored by F.F. Videon and J.P. Schilke, Civil & Agricultural Engineering, Montana State University, August 1989. The minimum design roof snow load after allowed reductions shall be 30 psf.

The publication is $20
— And—
may be purchased from MSU Civil Engineering at 406-994-2111.

In addition, you can estimate/verify your snow loads by Using SNOTEL Data to Estimate Snow Load Amounts: http://www.id.nrcs.usda.gov/snow/data/geninfo/snowload.html & Montana Data http://www.mt.nrcs.usda.gov/snow/

Nebraska

Use IBC 2003—20 psf-35 psf with Case Study Areas
—And—
Contact Local Building Officials for determining required Snow Loads

Nevada

Use IBC 2003—0 psf-20 psf with Case Study Areas
—And—
Contact Local Building Officials for determining required Snow Loads

In addition, you can estimate/verify your snow loads by Using SNOTEL Data to Estimate Snow Load Amounts: http://www.id.nrcs.usda.gov/snow/data/geninfo/snowload.html & Nevada Data http://www.nv.nrcs.usda.gov/snow/

New Hampshire

graphic cover of publication entitled Ground Snow Load for New HampshireUse IBC 2003—50 psf-90 psf with Case Study Areas
—And—
Contact Local Building Officials for determining required Snow Loads
—And—
Use the Ground Snow Load for New Hampshire developed by the Corps of Engineers, Cold Regions Research and Engineering Laboratory. The publication may be downloaded for free at http://www.crrel.usace.army.mil/techpub/CRREL_Reports/reports/TR02-6.pdf

New Jersey

Use IBC 2003—20 psf-30 psf with Case Study Areas
—And—
Contact Local Building Officials for determining required Snow Loads

New Mexico

Use IBC 2003—0 psf-150 psf with Case Study Areas
—And—
Contact Local Building Officials for determining required Snow Loads
—And—
The Structural Engineers Association of New Mexico are presently trying to unify the snow load data with some of the methodology developed by the Army Corps of Engineers, but are only in the funding and awareness stage.

In addition, you can estimate/verify your snow loads by Using SNOTEL Data to Estimate Snow Load Amounts: http://www.id.nrcs.usda.gov/snow/data/geninfo/snowload.html & New Mexico Data http://www.nm.nrcs.usda.gov/snow/

New York

The State of New York has modified the snow load map
— And—
It can be found at: http://www.woodtruss.com/images/nysnowmap.pdf

North Carolina

Use IBC 2003—10 psf-25 psf with Case Study Areas at higher elevations

North Dakota

Use IBC 2003—30 psf-60 psf with Case Study Areas
—And—
Contact Local Building Officials for determining required Snow Loads

Ohio

Use IBC 2003—20 psf-25 psf with Case Study Areas
—And—
Contact Local Building Officials for determining required Snow Loads
—And—
An additional reference is: Schmidlin, T.W., Edgell, D.J. & Delaney, M. 1992. Design Ground Snow Loads for Ohio. Journal of Applied Meteorology, Volume 31 (6).

Oklahoma

Use IBC 2003—5 psf-20 psf

Oregon

cover shot of publication entitled Snow Load Analysis for OregonUse IBC 2003—minimum of 25 psf with Case Study Areas at higher elevations
—And—
Contact Local Building Officials for determining required Snow Loads
—And—
Use the publication: Snow Load Analysis for Oregon, 12/07 edition, by T. George, J.W. Estroup, published by Structural Engineers Association of Oregon.

The publication is $80.95 and may be purchased from Building Tech Books at 1-800-ASK-Book or http://www.buildingtechbooks.com/

In addition, you can estimate/verify your snow loads by Using SNOTEL Data to Estimate Snow Load Amounts: http://www.id.nrcs.usda.gov/snow/data/geninfo/snowload.html & Oregon Data http://www.or.nrcs.usda.gov/snow/

Pennsylvania

Use IBC 2003—25 psf-35 psf with Case Study Areas
—And—
Contact Local Building Officials for determining required Snow Loads

Rhode Island

Use IBC 2003—25 psf-40 psf

South Carolina

Use IBC 2003—5 psf-15 psf with Case Study Areas at higher elevations
—And—
Contact Local Building Officials for determining required Snow Loads

South Dakota

Use IBC 2003—15 psf-50 psf with Case Study Areas
—And—
Contact Local Building Officials for determining required Snow Loads

Tennessee

Use IBC 2003—10 psf-25 psf with Case Study Areas at higher elevations
—And—
Contact Local Building Officials for determining required Snow Loads

Texas

Use IBC 2003—0 psf-20 psf

Utah

The State has amended the snow load requirements from the IBC through Administrative Rule R156-56. Utah Uniform Building Standard Act Rules for snow loads can be found at: http://www.rules.utah.gov/publicat/code/r156/r156-56.htm

In addition, you can estimate/verify your snow loads by Using SNOTEL Data to Estimate Snow Load Amounts: http://www.id.nrcs.usda.gov/snow/data/geninfo/snowload.html & Utah Data http://www.ut.nrcs.usda.gov/snow/

Vermont

Use IBC 2003—40 psf-60 psf with Case Study Areas
—And—
The State of Vermont, Department of Labor and Industry has a map for Minimum Ground Snow Loads located at: http://www.state.vt.us/labind/Fire/snowloads.htm
—And—
Structural Engineers Association of Vermont (SEAVT) is working on a report with recommended snow loads similar to that published by Structural Engineers Association of New Hampshire (SEANH) and Cold Regions Research and Engineering Laboratory (CRREL) in 2002 for New Hampshire. They hope to have this completed in the next year or two.

Virginia

Use IBC 2003—10 psf-25 psf with Case Study Areas at higher elevations
—And—
Contact Local Building Officials for determining required Snow Loads

Washington

graphic cover of a publication entitled Snow Load Analysis for WashingtonUse IBC 2003—10-psf-20 psf with Case Study Areas at higher elevations
—And—
Contact Local Building Officials for determining required Snow Loads
—And—
A publication can be purchased called: Snow Load Analysis for Washington, 2nd Ed., by Structural Engineers Association of Washington, published by Structural Engineers Association of Washington

The publication is $30 and may be purchased from SEAW at 206-682-6026 or http://www.seaw.org/

In addition, you can estimate/verify your snow loads by Using SNOTEL Data to Estimate Snow Load Amounts: http://www.id.nrcs.usda.gov/snow/data/geninfo/snowload.html & Washington Data http://www.wa.nrcs.usda.gov/snow/

West Virginia

Use IBC 2003—20 psf-30 psf with Case Study Areas at higher elevations
—And—
Contact Local Building Officials for determining required Snow Loads

Wisconsin

The State has amended the snow load requirements from the IBC and a snow load map may be found at: http://www.commerce.state.wi.us/SB/SB-CommercialBuildingsCodeEnrolledReplacV1C.pdf

Wyoming

Use IBC 2003—20 psf-30 psf with Case Study Areas at higher elevations
—And—
Contact Local Building Officials for determining required Snow Loads

Also, the University of Wyoming has a website with a WYOMING CLIMATE ATLAS by Jan Curtis and Kate Grimes, that gives information on how to use SNOTEL Data to Estimate Snow Loads at: http://www.wrds.uwyo.edu/wrds/wsc/climateatlas/snow.html

In addition, you can estimate/verify your snow loads by Using SNOTEL Data to Estimate Snow Load Amounts: http://www.id.nrcs.usda.gov/snow/data/geninfo/snowload.html & Wyoming Data http://www.wy.nrcs.usda.gov/snow/