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Ground snow load, read September 23, 2026

Alaska Ground Snow Load: The Code and the Local Figures

Alaska takes the national code's figure without a snow amendment of its own.

The adopted code
Who carries the figure
No state snow amendment, so the code governs
4
Published figures read
60 pounds per square foot to 100 lbs. per square foot
Zone or band
What the figure is keyed to
as the document keys it
September 23, 2026
Read
code adopted as written
The short answer

Alaska takes the national code's figure without a snow amendment of its own

Alaska adopts the national building code without a ground snow load amendment of its own, so the governing figure for a given address is the one the code's own table carries, and the body that applies it is the city or borough building department, and the Alaska state fire marshal's Division of Fire and Life Safety where a municipality has been exempted. four figures published by Alaska bodies themselves are set out below. 17 states are in the same position, which makes it the second commonest arrangement in the country.

The code's figure is applied to a given address by the city or borough building department, and the Alaska state fire marshal's Division of Fire and Life Safety where a municipality has been exempted.

The adopted codeBy region or zone

Chapter 16, Section 1601.1 (Scope) of the IBC, is revised by adding a second paragraph to read: “This chapter is adopted as design criteria for the structural safety of buildings constructed under this code. The division of fire and life safety does not perform review for conformance with these criteria.”
13 AAC 50.020. International Building Code., read September 23, 2026. Read it at the source
What the documents print

The 4 figures published for Alaska

four Alaska figures, running from 60 pounds per square foot at City of Fairbanks to 100 lbs. per square foot at Cordova, every one of them quoted from the document it was printed in. Nationally 235 figures were read across 33 states.

Alaska splits into zones or bands rather than counties, so the boundary that matters is drawn on the document itself.

Each figure below appears in the unit and the wording its own document used, and links to the row it was printed in. A pound per square foot is a weight, and how deep a weight of snow sits depends on what that snow has been through since it fell, which is why the documents print the load and leave the depth to the engineer standing at the building.

  • 100 lbs. per square foot

    Cordova

    Town or city

    read from the city's replacement of the residential code's climatic and geographic design criteria table

    the document it was printed in, read September 23, 2026

  • 95 pounds per square foot

    Petersburg

    Town or city

    the borough replaces the figure the adopted building code lists for Petersburg

    the document it was printed in, read September 23, 2026

  • 70 PSF

    Soldotna

    Town or city

    read from the city's entries in the residential code's climatic and geographic design criteria table

    the document it was printed in, read September 23, 2026

  • 60 pounds per square foot

    City of Fairbanks

    Town or city

    the ordinance prints this as a minimum to be used in determining drift loads, alongside a separate roof design snow load

    the document it was printed in, read September 23, 2026

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The document behind it

What Alaska publishes

Alaska does not publish a snow load document of its own, so the record below is the rule that puts the figure where it is rather than a table of figures.

The adopted code

13 AAC 50.020. International Building Code.

Alaska Department of Public Safety, Division of Fire and Life Safety, effective 10-28-2022

Open the document, read September 23, 2026

Who decides

The office that holds the figure

The city or borough building department, and the Alaska state fire marshal's Division of Fire and Life Safety where a municipality has been exempted: the state code leaves detached homes out and lets municipalities take over review.

Whoever publishes the number, the authority having jurisdiction over the parcel is the body that applies it, and it is the body a permit application goes to. Where a county has amended the state or national figure for its own terrain, the county’s figure is the one that governs there.

the city or borough building department, and the Alaska state fire marshal's Division of Fire and Life Safety where a municipality has been exempted

the state code leaves detached homes out and lets municipalities take over review

The state fire marshal may exempt a municipality from compliance with the requirements of 13 AAC 50.027 , if the municipality (1) has the expertise to and has enacted ordinances for the review and approval of plans and specifications and the enforcement of state fire statutes and regulations; and (2) agrees in writing to concurrently undertake or continue a building fire safety inspection program that meets or exceeds the program conducted by the division of fire and life safety.

The rule that puts it there, read September 23, 2026

The front of a wide stone and brick county court house during a snow shower, the words PRINCE GEORGE’S COUNTY COURT HOUSE carved across the facade above the glass entrance doors, and a bronze group of running horses on a plinth in the foreground under fresh snow
Fourteen states publish a map, a table or a study of their own that a reader can look a place up in. Seventeen adopt the national code and write no snow amendment, so the governing figure is the standard’s rather than the state’s. The remaining nineteen set nothing at all, and there the number lives with a county or a city: the office that issues the permit is the office that holds it. “PG courthouse winter”, Sallicio, Public Domain
The code behind it

What Alaska adopted

Department of Public Safety, Division of Fire and Life Safety adopts International Building Code 2021 Edition (IBC) (2021). Alaska adopted it as written.

Editions matter more here than they look as though they should. Codes are adopted on a cycle of a few years, a county can amend one in between, and the national standard changed how it presents ground snow load between recent editions. 22 of the fifty states amended the code they adopted rather than taking it as written, and a state snow load table, where one exists, usually lives in that amendment.

The International Building Code 2021 Edition (IBC), Chapters 1 — 12, 14 — 28, and 30 — 35, and Appendix C are adopted by reference to regulate all occupancies and buildings
13 AAC 50. Codes and Standards, Alaska Administrative Code, Department of Public Safety, Division of Fire and Life Safety, read September 23, 2026. Read it at the source
How Alaska compares

The same question in the other forty nine

14 states publish a ground snow load of their own, 17 adopt the national code without a snow amendment, and 19 leave every figure to a county or a city. 235 published figures were read across 33 states, and 16 states mark terrain their own document declines to give a figure for.

The table is ordered by how few steps stand between a reader and a figure keyed to their own town, which is a different ranking from how much snow a state gets.

Fifty states, read September 23, 2026.
StateWho publishes the figureKeyed toFigures read
VermontThe state drew a mapBy region or zone14
North CarolinaThe state drew a mapBy elevation3
WisconsinThe state drew a mapBy region or zone
ConnecticutThe state publishes a tableCounty by county12
MassachusettsThe state publishes a tableCounty by county12
MichiganThe state publishes a tableCounty by county12
Rhode IslandThe state publishes a tableCounty by county12
UtahThe state publishes a tableBy elevation12
MarylandThe state publishes a tableCounty by county10
IndianaThe state publishes a tableCounty by county9
MinnesotaThe state publishes a tableCounty by county8
New JerseyThe state publishes a tableCounty by county6
MontanaA study the state adoptedBy elevation12
New HampshireA study the state adoptedBy elevation12
TexasThe adopted codeBy region or zone6
AlaskaThe adopted codeBy region or zone4
New YorkThe adopted codeBy elevation4
MaineThe adopted codeCounty by county3
OhioThe adopted codeCounty by county3
ArkansasThe adopted codeBy region or zone2
LouisianaThe adopted codeCounty by county1
AlabamaThe adopted codeOne figure statewide
FloridaThe adopted codeOne figure statewide
GeorgiaThe adopted codeCounty by county
IowaThe adopted codeNot stated
KentuckyThe adopted codeOne figure statewide
NebraskaThe adopted codeNot stated
North DakotaThe adopted codeNot stated
OregonThe adopted codeBy elevation
South CarolinaThe adopted codeCounty by county
TennesseeThe adopted codeCounty by county
CaliforniaEach building departmentBy elevation12
WashingtonEach building departmentBy elevation12
ArizonaEach building departmentBy elevation11
NevadaEach building departmentBy elevation9
DelawareEach building departmentCounty by county7
IdahoEach building departmentBy elevation6
OklahomaEach building departmentBy region or zone6
VirginiaEach building departmentCounty by county4
WyomingEach building departmentBy region or zone4
PennsylvaniaEach building departmentCounty by county3
ColoradoEach building departmentBy elevation2
KansasEach building departmentCounty by county1
South DakotaEach building departmentCounty by county1
HawaiiEach building departmentNot stated
IllinoisEach building departmentNot stated
MississippiEach building departmentCounty by county
MissouriEach building departmentNot stated
New MexicoEach building departmentBy elevation
West VirginiaEach building departmentCounty by county

Alaska ground snow load questions

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Alaska read September 23, 2026: Alaska Department of Public Safety, Division of Fire and Life Safety, 13 AAC 50.020. International Building Code., and the county and city building departments that publish a figure where the state does not. Every value, adopting rule and case study rule above links to the document it was printed in. Codes are adopted on a cycle and a jurisdiction can amend one in between, so the document linked beside a line is what governs on the day. A ground snow load is an input to a structural calculation about one building by somebody who has been to it.