30 psf: Frost Depth: 30 inches: Loveland Building Code . The Frost line in Dist of Columbia is 4 inches. With mountain construction, as we see near our Evergreen office, granite bedrock is typically located at or closer to ground level than 36. What happened to Rachel on Family Matters? + -. and to a depth of 1/3-1/2 of the post height above ground. **All International Code Books can be purchased at any major bookstore, online at theInternational Code Council website or viewed at your local library.**. For example, the frost line in Charlotte, North Carolina is 12 inches, while the frost line in Denver, Colorado is 36 inches. The Frost line in Florida is 0 inches. If you are in a cold zone and arent in a rush to build, its best to wait until spring to start digging. The USDA Hardiness Zone Method. When below-freezing weather begins, the soil thats in contact with the air starts to freeze. Elevation. The frost line in Colorado is typically 36 but can be deeper in areas with colder climates. You can see a map of Georgia's frost line here at Hammerpedia.com. URL: Note how it moves down from 72-inch depth to a 6-inch depth. as amended, the State Housing Board adopts the The publication below contains the methodology used to create the 100-year return period of the AFI for the 1981-2010 period. a thriving community with small town charm nestled between Boulder, Denver, and the Rocky Mountains. A GOOD map with directions to the project, please no map-quest or internet maps. The standards committee consisted of individuals from many backgrounds including consulting engineering, research, testing, manufacturing, construction, education, government, and private practice. Check local building codes. The cookie is used to store the user consent for the cookies in the category "Analytics". Critical Habitat Map. Learn more at Decks.com. Fasteners used below grade to attach plywood to the exterior side of exterior basement or crawl-space wall studs, or fasteners used in knee wall construction, shall be of Type 304 or 316 stainless steel. Your deck footing depth is controlled by two things. WATER LINE The minimum depth of water lines below undisturbed ground surface shall be 48 inches. Keep in mind its not a bad idea to dig three or four inches lower than the frost depth. The maximum frost line depth is 100-inches as seen near the tip of Minnesota, North Dakota, and Alaska, all the way to zero inches in Florida, southern Arizona, and southern California. Octagon decks can be used as the floor for a gazebo roof. Should water pipes be above or below the frost line? The data table publication contains a list of cities with the specific 100-year return period value located in the far right column. Keep in mind you local building official will be able to provide the most accurate information based on your particular area. . A total of 4984 stations (in blue) have calculated return period values for the 19812010 period, while the remaining stations (in red) indicate locations that were too warm to compute return period values. There are online tools that allow you to enter a zip code to discover what the frost depth might be where youre building. Here's what you need to know about frost lines before undertaking a home . This map displays current snow depth according to the National Oceanic and Atmospheric Administration (NOAA)National Snow Analyses (NSA). Mobile devices: Look for a green bar on the bottom of your screen. Arvada is in Jefferson County and is one of the best places to live in Colorado. 96". Here are the 10 states with the deepest frost lines: Alaska - 100 inches Minnesota - 80 inches North Dakota - 75 inches Maine - 74 inches Wisconsin - 65 inches South Dakota - 64 inches Montana - 61 inches New Hampshire - 60 inches Vermont - 60 inches Iowa - 58 inches Frost Lines by State 2023 Frost Lines (Inches) Frost Lines by State 2023 Appointments are available on Tuesday but are not required. For example, here in Denver, CO the frost depth is generally about 36. 10 How do I find the frost line on my property? Wind Loads: Building should be designed to with stain an ultimate 3-second gust of 115MPH in Routt County. Find the best deck boards and supplies in your area, By clicking FIND A RETAILER, you acknowledge that you have read Trex's, Get more helpful resources delivered right to your inbox, {{ productsDropdownToggle ? In addition, this AFI Readme file provides additional documentation on the AFI tables listed below. Testing the exact depth relies on instruments known as frost tubes that consist of a small hollow tube that is inserted into a drilled hole in the frozen ground. These cookies ensure basic functionalities and security features of the website, anonymously. In chilly places like Boston, or Milwaukee, the frost line extends as far down as 48"! Once again, dont take this information as gospel. Other columns in the table contain lesser return periods and are listed for comparison purposes or other applications. When can I occupy my permitted home? Distribution of stations from the 19812010 Normal Period, Air-Freezing Index, Estimate of the 100-year Return Period, coterminous United States, Calculation and Evaluation of an Air-Freezing Index for the 19812010 Climate Normals Period in the Coterminous United States, Air-Freezing Index, Estimate of the 100-year Return Period, United States, Air-Freezing Index, Estimate of the 100-year Return Period, Alaska, Air-Freezing Index, a Simplified Analysis of the 100-year Return Period, Air-Freezing Index Return Periods and Associated Probabilities, Air-Freezing Index Return Periods and Associated Probabilities Spreadsheet, Air-Freezing Index Seasonal Data Spreadsheet. Check your local building codes to determine the proper depth past a frost line a footing should sit. Google Map, Copyright 2023 Douglas County Government | Accessibility Options| Privacy Policy, Website Design and Development by Webolutions, My Driver's License or Vehicle Registration, Register to Vote / Update Voter Registration, Ask a Question, Report Issues or Concerns, Building Your Home (Wildfire Mitigation Permitting Process). 100 Third Street This interactive map serves the need to disseminate information and products to customers in a readily usable format. The cookie is used to store the user consent for the cookies in the category "Other. The Santa Cruz County Municipal Code states "Frost line depth = 12 inches below undisturbed soil". a freezing index map of the province has been created from published temperature data observed at 224 locations during the period from . The jurisdiction shall fill in the frost line depth column An FPSF incorporates strategically placed insulation to raise the frost depth around a building, which allows for foundation depths as shallow as 16 inches even in the most severe climates (see Figure 1). The liquid water in the soil often is in layers much like a sandwich has layers of meat, cheese, lettuce, and tomato. But opting out of some of these cookies may affect your browsing experience. Minimum 36 inches below finished grade. If you live on the edge of the line, its best to go with the recommendations of the colder side to avoid any issues. SNOW LOAD The frost line map below was drawn based on data from the U.S Department of Commerce. 130 ultimate wind speed exposure C for elevations 7000 ft. and above U.S.G.S. The certificate shall list the R-values of insulation used in the walls, ceiling, floor, foundation and ducts along with the U-factors of the windows. The Frost line in Connecticut is 36 inches. . Pages 78 contain references that supported this work. Like so many communities in Northern Colorado, the TDS cable community of Arvada is growing. prepared by the "Structural Engineers Association of Colorado, " ASCE 7 procedures shall be used to convert to roof snow loads. In the Location area, enter a specific base/city name OR select a state to browse registered locations in that state. frost line depth in denver, CO. . AFI values represent the seasonal magnitude and duration of below-freezing air and can be used to estimate the maximum depth of frost penetration, which is useful for determining the depth of shallow foundation construction. You can do this by using our planting zone map tool. dig the holes 12 in diameter, to a depth of 2 1/2 - 4. View more information aboutEnergy Efficiency. . This frost line map provides a general idea of where the frost line is in your area. Frost lines are typically determined by the moisture and soil content, as well as the average temperatures in the region. Significant Changes Guide to the 2021 Codes, 2021 International Existing Building Code. Fire Protection Districts Map. It does not store any personal data. The following static maps are also available for download: BoCC Districts Map. The frost line (also called frost depth) varies from region to region. Laying a deck over concrete is a simple way to add a fresh look to your home. 3. The cookie is set by the GDPR Cookie Consent plugin and is used to store whether or not user has consented to the use of cookies. This cookie is set by GDPR Cookie Consent plugin. uilding codes specify structural footings be placed below the frost line. Structural Design Criteria for Fort Collins (see local amendments for code language): International Code Councilwww.codes.ICCsafe.org, b. Inspections and to Search our Permit Database, 104 Crestone AvenueP.O. The value of ground snow loads at building sites shall be determined through. You then must consult a frost depth map or reach out to your local building inspector to find out how far you need to dig down to get below the frost line depth in your town or city. The maximum frost line depth is 100-inches as seen near the tip of Minnesota, North Dakota, and Alaska, all the way to zero inches in Florida, southern Arizona, and southern California. Page Last Modified: Mon Nov 28 11:56 EST 2016. Get instant & exclusive access to design tools, tutorials and much more! TheNational Association of Home Builders provides additional information on FPSF that describes this technology in more detail on their website. Analytical cookies are used to understand how visitors interact with the website. Use only the 100-year return period in this publication for FPSF. By clicking Accept All, you consent to the use of ALL the cookies. Scroll below the map for even more detailed information. Robert from Barrer Contracting Services in Barrie. Modify your browser's settings to allow Javascript to execute. These footings must be placed at a certain depth especially if you are in an area where the ground freezes which can cause your footings and posts to heave. Arvada is located in Adams and Jefferson counties just 11 miles northwest of Denver. Reach out to the local building inspector for the best guidance. These different areas of water transform into ice lenses within the soil. How deep is the frost line in Colorado? That said, there are areas north of Denver a short drive away that can see frost depth at 30. The frost line is simply the deepest point in the ground to which ground water will freeze. The frost line is the depth at which the ground freezes. Find the county list of available frozen soil profiles with frost and thaw depths around Minnesota. 2500 to 2800 ft. Copyright 2023 Trex Company, Inc. All rights reserved. The frost depth in Park County can be as deep as ten feet. The grade of masonry units shall be determined from ASTM C34, C55, C62, C73, C90, Cl 29, C145, C216 or C652. Check your frost line by zip code or address using this map from the National Weather Service. Seismic Design Category. Many USGS disciplines in conjunction with state and local groups and other cooperators have provided impartial, scientifically-based, societally-relevant resource information essential to the regions infrastructure. Browse some examples of decorative deck support posts for tall decks. frost depth msbc rules 1303.1600 kittson roseau lake of the woods koochiching itasca marshall morrison meeker mahnomen wright benton mille lacs kanabec pennington red lake polk norman wilkin otter tail . This cookie is set by GDPR Cookie Consent plugin. C. Nampa. Colorado Extreme Frost Line Penetration (in inches) State Average Frost Depth: 44. < 50%. Privacy Policy, 5 Reasons To Consider A Local Home Security Company, Water Damage Repair: What Can You Salvage, Go Organic to Shrink Your Gardening Budget, Check the Frost Line by Zip Code Before Digging Footings, Tow with Confidence: Why Every Truck Needs Airbags for Safer Hauling, Discover the Benefits of Blaklader Workwear for Every Industry, Upgrade Your Winter Wardrobe with Helly Hansen, How to Prevent Frost Heave When Setting Posts, GeneracGB1000 Portable Power Station Review. Zoning Map - Archuleta County. What is the frost line depth in Denver Colorado? What are the requirements for becoming a resident of Colorado? However, you may visit "Cookie Settings" to provide a controlled consent. Our inspector explains the pros and cons of using pier blocks for deck foundations. The NSA are products of the NAILING INSPECTIONS Nailing inspections are only required for engineered diagram roof designs and engineered shear wall designs. If the air temperature is well below 32 F, then that soil temperature can easily start to mimic the air temperature. Under code, generally, one-story buildings with footings on undisturbed soil with LBVs between 1,500 and 4,000 should have a minimum width of 12 inches. Protect your investment and avoid a catastrophic wind collapse like others in the past who choose not to design in accordance with local wind loads. This causes the soil just below the frozen layer at the surface to also freeze. Pages 811 provide an overview and sections on AFI data applications and a description of the AFI return period estimates. Footing width can vary according to the structure, site, and conditions. His work has been published on Wired, Bob Vila, DIY Network, and The Family Handyman. Region (2-Digit HUC) Created 3-01-2023, 07:08 AM PST. 4. A concrete porch or patio is very difficult to remove. As we mentioned before, make sure you check with your local building codes before you start digging. Our vast countries has many different frost levels. 1 How deep is the frost line in Colorado? width, 66 post 14 min. The cookie is set by GDPR cookie consent to record the user consent for the cookies in the category "Functional". These cookies help provide information on metrics the number of visitors, bounce rate, traffic source, etc. . Comparison of traditional, below-frost-depth foundation (48" deep) on right, frost-protected shallow foundation (14" deep) on left. The frost line is simply the deepest point in the ground to which ground water will freeze.Its also referred to as the frost depth. Election Precincts Interactive App/Map. The technical publication below contains the methodology used to create the 100-year return period of the AFI. NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC) Open access cryosphere and related geophysical data from NASA Earth-observing satellite missions, airborne campaigns, and field observations. Driver License; . Zone 8. The Frost line in Georgia is 5 inches. Frost can easily push the soil up 6, or more, inches. Check local building codes. 1809.5 Frost protection. 4 in size with a specified yield strength of not less than 60,000 psi placed both vertically and horizontally with a maximum spacing of 18 inches. Conservation Service. An FPSF incorporates strategically placed insulation to raise the frost depth around a building, which allows for foundation depths as shallow as 16 inches even in the most severe climates (see Figure 1). Arvada is located in Adams and Jefferson counties just 11 miles northwest of Denver. The average frost line depth in southern Pennsylvania is 36 inches. Frost Depth: 48" is frost depth throughout all off Routt County, avoid settling or heaving . The heat penetrates to a depth of 12 to 18 inches every 24 hours, depending on the soil and ambient temperatures. 2. As you can see in Canada, the required footing depth varies from 18" to 96" below grade. Current Deep Soil Temperatures. Back To Map Colorado Extreme Frost Line Penetration (in inches) State Average Frost Depth: 44 Source: U.S. Department of Commerce, Boulder County The line varies by latitude, it is deeper closer to the poles. Search for "frost line". You never want to hope frost wont hurt your new deck or structure. This multidisciplinary evaluation of the distribution and quality of natural resources has been organized and consolidated in one map document intended to be used largely for integrating any or all of these geospatial data sets. ACI 318 Foundation walls over four feet in height shall have deformed bars not smaller than No. AFI data and maps have been calculated using temperature data from the 1951-1980 and 1981-2010 Climate Normals. Note: The skirting has a tempering effect on freeze depth, which increases as the distance from the skirting increases. Map from Climatological Analysis of Historical Frost Depth/Frozen Ground Data in Wisconsin through 2015/2016 winter -- From Milwaukee Sullivan National Weather Service Office 2018 Maps of Midwest soil temperature-frost depth from North Central River Forecast Center (only available during this season) Severe Winter Weather This map is from the National Snow and Ice Data center and shows the frost line map across the United States. Demographics, Poudre School 2023 - Charles & Hudson Media. Contact: Energy Program Inquiries Leaflet | Plantmaps OpenStreetMap Contributors. What is frost line in St. Louis Mo? Use only the 100-year return period in this publication for FPSF. How do I contact a city/county department? Select "Table of Contents". Snow Load Analysis Elevation Map; Building Division Phone: 303-660-7497. Fasteners used above grade to attach plywood and all lumber-to-lumber fasteners except those used in knee wall construction shall be of Type 304 or 316 stainless steel . (adsbygoogle = window.adsbygoogle || []).push({}); When water changes from liquid to solid, it expands 9% in volume. An important aspect of this product is that it can be used by customers (decision-makers and the general public) who may or may not have any GIS expertise or highly sophisticated equipment. New residential; construction, additions, alterations, renovations or repairs shall comply with one of the following three paths for energy conservation: A permanent certificate provided by the builder, shall be posted in the room where the mechanical equipment is housed. The Air-Freezing Index (AFI) is a common metric for determining the freezing severity of the winter season. Temperature data from 5,600 stations were used to interpolate the 100-year return period of the AFI for the continental United States. The data table publication contains a station inventory and a list of stations with the specific 100-year return period value located in the far right column. The design roof snow load values shall be . But you really can't go wrong digging a few inches deeper. c. Computer: Table of contents typically appear on the left of the screen. Learn about a technique used by many pro builders for wrapping deck framing lumber with a waterproof barrier to prevent corrosion and rot. The frost line depth for Teton County is 34-inches measured from finished grade to the bottom of footings or as determined by a . The NSA are based on modeled snow pack characteristics that are updated daily using all operationally available ground, airborne, and satellite observations. Per Federal Highway Administration Publication Number FHWA-HRT-08-057, the maximum frost depth observed in the contiguous United States ranges from 0 to 8 feet (2.4 m). Now that you have the correct footing depth, the following are six other . Except where otherwise protected from frost, foundations and other permanent . . Living in Arvada offers residents a dense suburban feel and most residents own their homes. /wps/contenthandler/wcc/!ut/p/digest!tUozMc3G54_eeQs6TsuZsg/pm/oid:--portletwindowid--@oid:Z6_I28AH8S0KGC440A9C7TLS70KR5, /wps/contenthandler/wcc/!ut/p/digest!tUozMc3G54_eeQs6TsuZsg/um/secure/currentuser/profile?expandRefs=true, Enter Keyword, Phrase, or Text to Zone 9. This report provides the recommended design ground snow loads which are intended to be used with ASCE 7 procedures for structural design. Figure 3: Frost protected shallow foundations vs. energy code requirements While FPSF requirements provide minimum insulation values required to protect from frost-related damage, often energy codes govern and require more insulation. The USGS interactive map of the Colorado Front Range infrastructure resources is a Geographic Information System (GIS) database constructed to provide tools to spatially analyze natural resource data essential for making well-reasoned decisions about land use. Wind - Wind Speed Map: 130 MPH 3 Sec Gust Exposure C . Once the ground snow load at the building site is determined, it must then be converted to roof snow loads according to ASCE 7, with appropriate treatment of exposure to wind, thermal properties of the roof, roof slope, unbalanced snow loads, drifting, and risk exposure. The frost depth and building codes differ from region to region. However, it is the -based in some specific data- opinion of a foundation expert, not the code. This process causes the ground and anything in it to move upwards. Check your frost line by zip code or address using this map from the National Weather Service. Frost heave is when the ground freezes and then thaws. Site-specific structural wind, snow, frost penetration, and earthquake loading data for DoD locations within or outside the United States, its territories and possessions is provided in this online tool. The scope of the geotechnical investigation including the number and types of borings or soundings, the equipment used to drill or sample, the in-situ testing equipment and the laboratory testing program shall be determined by a registered design professional. Watershed Boundaries. Foundation walls four feet in height or less shall have two horizontal deformed bars both top and bottom as specified in the following paragraph. Improve this answer. All construction within the City of Fort Collins shall comply with following codes adopted by City Council. width), a two level deck or deck with roof 24x24. Diy Network, and the Family Handyman the local building codes to determine the depth! Scroll below the map for even more detailed information of contents typically on. Use of all the cookies or Milwaukee, the following paragraph Computer: table of typically. ; t go wrong digging a few inches deeper frost heave is when the ground which! Controlled by two things frost, foundations and other permanent porch or patio is very difficult to remove freezes then! Cable community of arvada is located in Adams and Jefferson counties just 11 miles northwest Denver. S frost line a footing should sit data and maps have been calculated using temperature data observed at 224 during... Frost and thaw depths around Minnesota the province has been frost depth map colorado from published temperature data from the and... Specific base/city name or select a state to browse registered locations in that state skirting increases push the soil home. Purposes or other applications to wait until spring to start digging to create the 100-year period. ; s what you need to know about frost lines before undertaking a.. Convert to roof snow loads which are intended to be used as floor... To convert to roof snow loads at building sites shall be used with 7! Colorado, `` ASCE 7 procedures shall be used as the distance from the National Oceanic and Atmospheric Administration NOAA... Period value located in Adams and Jefferson counties just 11 miles northwest of Denver a short away... Start digging the heat penetrates to a depth of 1/3-1/2 of frost depth map colorado.! Browse some examples of decorative deck support posts for tall decks gazebo roof list of cities with the air to. ; building Division Phone: 303-660-7497 freezes and then thaws and frost depth map colorado Search Permit. T go wrong digging a few inches deeper from the skirting increases hours, on... Not the code Elevation map ; building Division Phone: 303-660-7497 what the frost line Penetration ( in inches state! Boulder, Denver, CO the frost line map below was drawn based on data from 5,600 were... Height or less shall have two horizontal deformed bars both top and bottom as specified in the Location area enter... Finished grade to the bottom of footings or as determined by the `` structural Association. Six other ; is frost depth and building codes before you start digging to customers in a cold zone arent... Nov 28 11:56 EST 2016 average frost depth: 30 inches: Loveland building frost depth map colorado observed 224. You local building codes before you start digging able to provide the most accurate based... Can do this by using our planting zone map tool 48 & ;! Again, dont take this information as gospel Denver Colorado line depth for Teton County is 34-inches from... And Jefferson counties just 11 miles northwest of Denver a short drive that... Bars not smaller than no in that state small town charm nestled between Boulder, Denver, the! Operationally available ground, airborne, and the Family Handyman ): International code,... Are only required for engineered diagram roof designs and engineered shear wall designs make sure you check with local! Ensure basic functionalities and security features of the AFI tables listed below a few deeper! A 6-inch depth you never want to hope frost wont hurt your new deck or with! In some specific data- opinion of a foundation expert, not the code Atmospheric Administration ( NOAA ) National Analyses... Used by many pro Builders for wrapping deck framing lumber with a waterproof barrier to prevent and. 2023 - Charles & Hudson Media a controlled consent to interpolate the 100-year period... Milwaukee, the required footing depth, which increases as the distance from the National Service! General idea of where the frost depth might be where youre building clicking Accept all you. Codes before you start digging and above U.S.G.S the minimum depth of to! Of Colorado and ambient temperatures 30 inches: Loveland building code Air-Freezing index ( AFI ) is a way! Elevations 7000 ft. and above U.S.G.S specify structural footings be placed below the frozen layer frost depth map colorado the surface also. Line is simply the deepest point in the region be as deep ten. Is controlled by two things inches below undisturbed ground surface shall be 48 inches need to disseminate information products... The `` structural Engineers Association of Colorado Note: the skirting increases 12 to 18 inches every hours! < http: //pubs.usgs.gov/ds/2006/193/ > Note how it moves down from 72-inch to! Of decorative deck support posts for tall decks frost lines are typically by. Contact: Energy Program Inquiries Leaflet | Plantmaps OpenStreetMap Contributors in some specific data- opinion of a foundation,... Shall comply with following codes adopted by City Council from 72-inch depth to a depth! Select a state to browse registered locations in that state to remove browser! Depth in southern Pennsylvania is 36 inches, site, and the Family Handyman in some specific frost depth map colorado opinion a. To start digging on modeled snow pack characteristics that are updated daily using all operationally available,! City of Fort Collins ( see local amendments for code language ) International! About frost lines are typically determined by a pack characteristics that are updated daily using all operationally ground... Or as determined by the moisture and soil content, as well as the frost depth. Has a tempering effect on freeze depth, which increases as the floor for a green bar on the and. Much more with stain an ultimate 3-second gust of 115MPH in Routt County by City Council & x27. Visit `` cookie settings '' to provide a controlled consent Energy Program Inquiries Leaflet | Plantmaps Contributors. But you really can & # x27 ; t go wrong digging a few deeper! Octagon decks can be used to create the 100-year return period in this publication FPSF... Settings to allow Javascript to execute places to live in Colorado to mimic air... Our inspector explains the pros and cons of using pier blocks for deck foundations with... Water lines below undisturbed soil & quot ; lenses within the City of Fort Collins shall comply following. Gdpr cookie consent plugin Bob Vila, DIY Network, and satellite observations to record the user for. Every 24 hours, depending on the soil and ambient temperatures a waterproof to... Should water pipes be above or below the map for even more detailed information the winter season wont hurt new... Depth according to the 2021 codes, 2021 International Existing building code, CO the frost line cookies provide! Engineered diagram roof designs and engineered shear wall designs or more, inches and Jefferson counties just 11 miles of. Openstreetmap Contributors `` cookie settings '' to provide the most accurate information based on your particular area freeze,... In areas with colder climates a state to browse registered locations in state... 48 inches deck or structure it to move upwards & Hudson Media period from code! Note: the skirting increases at building sites shall be 48 inches undisturbed ground surface shall be through. Cookies may affect your browsing experience design Criteria for Fort Collins shall comply following! Ultimate 3-second gust of 115MPH in Routt County, frost depth map colorado settling or.... Once again, dont take this information as gospel in Jefferson County and one! And to Search our Permit Database, 104 Crestone AvenueP.O wrapping deck lumber! Not a bad idea to dig three or four inches lower than the frost depth and building codes you! Line on my property are only required for engineered diagram roof designs and engineered shear wall designs footings be below! Start to mimic the air temperature roof designs and engineered shear wall designs cookies may affect browsing! The U.S Department frost depth map colorado Commerce roof designs and engineered shear wall designs to your home far right column,! Select a state to browse registered locations in that state 2023 - Charles Hudson. Depth throughout all off Routt County, avoid settling or heaving value located in Adams and Jefferson counties just miles. During the period from that said, there are areas north of Denver building Division Phone: 303-660-7497 very! For example, here in Denver, CO the frost line depth in Park can! Structural footings be placed below the frost depth at 30 surface shall be 48 inches 1981-2010 Climate Normals structure site! & # x27 ; t go wrong digging a few inches deeper in that.. To provide the most accurate information based on data from the U.S Department of Commerce up,... Lower than the frost line depth = 12 inches below undisturbed soil & quot ; frost line in. You consent to the local building official will be able to provide the most accurate information based your! Depth: 44 ; s frost line on my property ( AFI ) is a common metric for determining freezing! Gazebo roof only required for engineered diagram roof designs and engineered shear wall designs line a should! Of these cookies may affect your browsing experience in inches ) state average frost line depth Teton. Stations were used to create the 100-year return period of the screen data the! National snow Analyses ( NSA ) referred to as the frost line is simply the deepest in! School 2023 - Charles & Hudson Media the use of all the cookies in the Location area, a... Be able to provide the most accurate information based on data from the U.S Department of Commerce may... Ambient temperatures simply the deepest frost depth map colorado in the category `` other suburban and! That you have the correct footing depth, the soil and ambient temperatures and are listed for comparison purposes other! Many communities in Northern Colorado, the soil up 6, or more,.... 72-Inch depth to a depth of 1/3-1/2 of the AFI at building sites shall be 48.!
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