Frost line map illinois - Feb 9, 2021 · What is the frost line for Illinois? The actual frost depth in Illinois varies from 24 inches in the southern part of the state to more than 40 inches in northern areas. What temperature is frost level? 32 °F Freezing or frost occurs when the air temperature falls below the freezing point of water (0 °C, 32 °F, 273 K). This is usually ...

 
List of Average Last Frost Dates for Locations in Illinois. Location. Average Last Frost Dates. Addison. May 11 - May 20. Algonquin. May 11 - May 20. Alsip. May 1 - May 10.. Craigslist palmdale cars

A frost date is the average date of the last light freeze in spring or the first light freeze in fall. The classification of freeze temperatures is based on their effect on plants: Light freeze: 29° to 32°F (-1.7° to 0°C)—tender plants are killed. Moderate freeze: 25° to 28°F (-3.9° to -2.2°C)—widely destructive to most vegetation.Back To Map Utah Extreme Frost Line Penetration (in inches) State Average Frost Depth: 30″ Source: U.S. Department of Commerce, North Ogden CityBelleville, Illinois, is the largest city south of Springfield, Illinois. A Google Map shows it’s proximity to St. Louis, Missouri, and other surrounding communities. Download and print Belleville Main Street’s Downtown Walking Guide featuring great places to shop, dine and play in downtown Belleville. Illinois South Tourism’s Follow the ...The freeze thaw cycle that take pace in that frost region can crack a concrete building foundation so its important to dig the foundation for any building down below the typical frost line. As the map shows, the typical frost depth in our region is pretty deep – specifically, in Chicago its around 4 feet.Illinois Storm Shelter Code 2020. ICC 500, 2020 not amended. Illinois Standard for Residential Construction in High Wind Regions 2020. ICC 600, 2020 not amended. Illinois Mechanical Code 2021. IMC 2021 not amended. Illinois Accessibility Code 2017. A117.1, 2017 not amended. 2018 Illinois Accessibility Code.Frost could also potentially develop in areas along and to the west of Interstate 39, an area that includes LaSalle County and the city of Rockford, according to officials.Back To Map California Extreme Frost Line Penetration (in inches) State Average Frost Depth: 5″ Source: U.S. Department of CommerceOct 1. Oct 3. Oct 5. Oct 9. Now that you know your frost dates, use our Garden Planting Calendar for Galena, Illinois to know when to sow and transplant your various vegetable plants!Searcy Production Team Member - 1st & 2nd Shifts. Searcy, AR. 10/12/2023. Apply for job. 12. Wholesome and affordable, our Premium sliced meats mix perfectly with fresh ingredients. The largest privately held sliced lunchmeat brand in the country. Started by a Dutch immigrant in the 50's and continues to be led by the 3rd generation of the ...You have a small 20% chance of getting 32° by September 29. There is a 50% chance of being hit by a 32° frost starting around October 9. You have a 80% chance of seeing 32° by October 18. Said another way, you have a 1 in 5 chance at making it to that day without a 32° night. In the Fall.2015 International Building Code (IBC) - CHAPTER 18 SOILS AND FOUNDATIONS - 1809.5 Frost protection. 1809.5 Frost protection. Except where otherwise protected from frost, foundations and other permanent supports of buildings and structures shall be protected from frost by one or more of the following methods: 1.A frost map helps determine the estimated first and last frost date in a given region and is a helpful tool to plan a garden. For maximum gardening success. Plant Library. ... Last and First Frost Dates for …Jul 1, 2021 · update: 2021 Illinois Energy Conservation Code, effective January 1, 2024 ... Frost line depth: 42 inches; Termite: moderate to heavy ... Site Map. Contact Us. A frost date is the average date of the last light freeze in spring or the first light freeze in fall. The classification of freeze temperatures is based on their effect on plants: Light freeze: 29° to 32°F (-1.7° to 0°C)—tender plants are killed. Moderate freeze: 25° to 28°F (-3.9° to -2.2°C)—widely destructive to most vegetation.A frost date is the average date of the last light freeze in spring or the first light freeze in fall. The classification of freeze temperatures is based on their effect on plants: Light freeze: 29° to 32°F (-1.7° to 0°C)—tender plants are killed. Moderate freeze: 25° to 28°F (-3.9° to -2.2°C)—widely destructive to most vegetation.Feb 27, 2014 · Click on each map to enlarge. Soil temperatures depend on soil types, soil moisture, vegetation, snowcover, and exposure. In general, drier soils warm up and cool faster than wet soils. Both vegetation and snow can insulate the soil for air temperature extremes. 60637. 60120. 60506. Springfield IL ZIP Code 62704 Profile, Map, Demographics, Politics and School Attendance Areas - Updated April 2024.The best solution to quickly thawing frozen ground is Powerblanket ground thawing blankets. A ground thawing blanket has heating elements that heat up to 150°F (65.5°C) and uses a standard electrical plug. The heat penetrates to a depth of 12 to 18 inches every 24 hours, depending on the soil and ambient temperatures.Alternately, there are many frost line depth maps that display that average frost line maximum for the region. 3. Frost heave can damage foundations, footings, and other important structural elements.The median date point maps provide the last spring and first fall median frost/freeze dates for specific temperature thresholds, i.e.36°F, 32°F, 28°F and 24°F. In this application, median date is defined as the date where there is a 50% chance a specified frost/freeze temperature will occur before or after the designated date.The Illinois State Water Survey maintains a network of 19 soil temperature sites across the state that measure temperatures at 4 and 8 inches. You can look at maps for 10 am , any hour of the day, high for the day, low for the day, under sod, and under bare soil.See table R301.2 (1) here . Referenced in 780 CMR Ch. 51 R403.1.4.1 (Ninth Ed. Residential Code, based on 2015 IRC) (assuming this is single or 2 family residential) If you have to ask this on reddit you're probably in over your head. I think you may have to go a bit deeper. 35" would get you to the bottom limit of the frost line around here ...Mar 14, 2020 · 0 to 8 feet. The line varies by latitude, it is deeper closer to the poles. 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). Below that depth, the temperature varies, but is always above 32 °F (0 °C). Frost/Thaw Contour Map Effective 12:01 am, Friday, April 5, 2024, Spring season weights for heavy haul and Period 1 weights for service rigs will come into effect on roads province wide. Last Modified: April 2, 2024 Classification: Public Twp 31 Twp 31 Thaw Line - March 14, 2024 Thaw Line - March 18, 2024 Twp 46 Twp 46Dec 28, 2021 · The best solution to quickly thawing frozen ground is Powerblanket ground thawing blankets. A ground thawing blanket has heating elements that heat up to 150°F (65.5°C) and uses a standard electrical plug. The heat penetrates to a depth of 12 to 18 inches every 24 hours, depending on the soil and ambient temperatures. The frost line in Illinois is 40 inches, so the water in the soil has not been known to freeze deeper than that point. In Chicago, building codes require that concrete supports be poured at a depth of at least 3 feet 6 inches. ... Frost depth data shown in this map is queried from the North Central River Forecast Center (NCRFC) database late ...An Interactive Map of Average First Frost Dates in Illinois and a list of locations in Illinois with Average First Frost DatesAdditional Gardening Related Climate Data for ZIP Code 60629 - Chicago, Illinois. 2023 Hardiness Zone: Zone 6a: -10°F to -5°F. 2012 Hardiness Zone: Zone 6a: -10°F to -5°F. 1990 Hardiness Zone: Zone 1b: -15F to -10F. Average First Frost Date: October 21 - 31.The Frost/Thaw line refers to the current allowable weights in place for a specific location in the Province of Alberta. Depending on the time of year, different parts of the Province may be at different allowable weights. The Province of Alberta monitors the frost and thaw depth through a network of thermistors located at 68 different ...The frost line shall be forty two inches (42") below grade. B. Concrete shall not be poured unless the outside temperature is at least twenty eight degrees Fahrenheit (28°F) and rising. If so, insulated blankets and tarps, as well as straw covered with …A frost map helps determine the estimated first and last frost date in a given region and is a helpful tool to plan a garden. For maximum gardening success. Plant Library. ... Last and First Frost Dates for Illinois. The last frost dates for most of Illinois are April 16 to 30. The last frost dates in southern Illinois are April 1 to 15.Inspectors are generally in the office from 7 to 9 a.m., although schedules vary day to day. If you have to leave a voicemail for your inspector to set up an inspection, please be sure to reference your permit number and the address for the project so that they can find the correct file quickly. If you are unable to find your inspector's phone ...Mar 2, 2022 · Last and First Frost Dates for Georgia. The last frost dates in southern Georgia are March 1 to 31. The last frost dates in northern Georgia are April 1 to 30. The first frost dates in Georgia range from October 1 to November 30, depending on where you live. See the map of Estimated First Frost Date in Fall. Frost Lines by State 2022. The frost line, also referred to as the frost depth, is the depth at which the groundwater in soil is expecting to freeze. Frost lines depend on an area's climatic conditions; including the heat transfer properties of materials in the ground (such as soil); and nearby heat sources. Frost lines vary by latitude and ...We would like to show you a description here but the site won't allow us.Chapter 16 Duct Systems. Chapter 17 Combustion Air. Chapter 18 Chimneys and Vents. Chapter 19 Special Appliances, Equipment and Systems. Chapter 20 Boilers and Water Heaters. Chapter 21 Hydronic Piping. Chapter 22 Special Piping and Storage Systems. Chapter 23 Solar Thermal Energy Systems. Chapter 24 Fuel Gas.Texas Building Code 2018 > 18 Soils and Foundations > 1809 Shallow Foundations > 1809.5 Frost Protection. Go To Full Code Chapter. Except where otherwise protected from frost, foundations and other permanent supports of buildings and structures shall be protected from frost by one or more of the following methods: Extending below the frost line ...Illinois Soil Moisture. As part of the Water and Atmospheric Resources Monitoring Program (WARM), the Illinois Climate Network monitors soil moisture conditions at several stations across the state. Continuous, hourly measurements have been made at many of these stations since the early 2000s. This relatively long record of soil moisture is an ...Snowfall Trends. Our statewide snowfall records in Illinois start in 1902. There is no long-term trend in snowfall since 1902. However, some decades were snowier than others, such as the 1910s, 1960s, and 1970s. In fact, the 1970s were the snowiest decade on record with an average snowfall of 27.2 inches. Snowfall amounts dropped steeply with ...Back To Map Illinois Extreme Frost Line Penetration (in inches) State Average Frost Depth: 36″ Source: U.S. Department of CommerceNature's Current Event: Frost Flowers. January 2, 2021. Christopher Evans. Late fall and early winter provide an opportunity for a rare glimpse at a fascinating phenomenon, if you are willing to get up early! Frost flowers, also called ice flowers, are thin, often undulating ribbons of ice that form at the base of certain plants.Outline Map. Key Facts. Illinois, a state in the Midwestern United States, shares its borders with Wisconsin to the north, Indiana to the east, and the Mississippi River forms its western border with Iowa and Missouri. To the south, it meets Kentucky by the Ohio and Mississippi Rivers. The state encompasses a total area of 57,915 mi 2 …A frost date is the average date of the last light freeze in spring or the first light freeze in fall. The classification of freeze temperatures is based on their effect on plants: Light freeze: 29° to 32°F (-1.7° to 0°C)—tender plants are killed. Moderate freeze: 25° to 28°F (-3.9° to -2.2°C)—widely destructive to most vegetation.Scroll down the page to the Illinois County Map Image. See a county map of Illinois on Google Maps with this free, interactive map tool. This Illinois county map shows county borders and also has options to show county name labels, overlay city limits and townships and more. To do a county lookup by address, type the address into the “Search ...See table R301.2 (1) here . Referenced in 780 CMR Ch. 51 R403.1.4.1 (Ninth Ed. Residential Code, based on 2015 IRC) (assuming this is single or 2 family residential) If you have to ask this on reddit you're probably in over your head. I think you may have to go a bit deeper. 35" would get you to the bottom limit of the frost line around here ...Concrete shall have a minimum specified compressive strength of f' c, as shown in Table R402.2. Concrete subject to moderate or severe weathering as indicated in Table R301.2(1) shall be air entrained as specified in Table R402.2. The maximum weight of fly ash, other pozzolans, silica fume, slag or blended cements that is included in concrete mixtures for garage floor slabs and for exterior ...A frost date is the average date of the last light freeze in spring or the first light freeze in fall. The classification of freeze temperatures is based on their effect on plants: Light freeze: 29° to 32°F (-1.7° to 0°C)—tender plants are killed. Moderate freeze: 25° to 28°F (-3.9° to -2.2°C)—widely destructive to most vegetation.Additional Gardening Related Climate Data for ZIP Code 62221 - Belleville, Illinois. 2023 Hardiness Zone: Zone 6b: -5°F to 0°F. Zone 7a: 0°F to 5°F. 2012 Hardiness Zone: Zone 6a: -10°F to -5°F. Zone 6b: -5°F to 0°F. 1990 Hardiness Zone: Zone 6a: -10F to -5F.1540×994 254 KB. If you choose to build your BrickWood Oven or BrickWood Box base to your regional frost line, the diagram below shows you how to easily adjust your base slab. The following materials ARE NOT ON THE MATERIALS LIST – you will need to calculate and purchase these items separately. For EASY math calculations, …(there's no way I take the time to dig deep enough to get below the frost line here). Do most people do Carflex to avoid PVC cracking from frost heaves? Thanks, Joel . mdshunk Senior Member. Location Right here. Jul 25, 2007 #2 I always run PVC the whole way. I don't "take the time to dig", the backhoe operator does.International Mechanical Codes 2012: Ordinance 2014-0-016. International Existing Building Code 2012: Ordinance 2014-0-017. National Electrical Code 2011: Ordinance 2014-0-018. All Appendices to the Adopted International Codes. State of Illinois Plumbing Code (2014) Pontiac Code of Ordinances, as amended. Illinois Energy Conservation Code 2018 ...Illinois 1 Harvey-0.4 mile south IL 83-NIRC RR Maximum Width 17 ft. 3 in. 1 Illinois 2 5.25 miles south of IL 64 in Castle Rock State Park Maximum Width 14 ft. 6 in. 2 Illinois 2 Rockford-Jct IL 2 and Auburn St-Roundabout Maximum Length 80 feet 2 Illinois 3 Chester-Jct IL 3 and IL 150 north junction-all turns Maximum Length 80 feet 8Frost Depth Map. A frost depth map is a useful tool to give you a rough idea of how deep you need to dig into the soil to get to where the ground rarely freezes. Often, you’ll see contour lines on a frost-depth map where any point along that line represents the frost depth in those towns and cities where the line crosses.The thermal conductivity is the rate of heat flow through a unit area under a thermal gradient (recall that 1 BTU is the energy (heat) required to raise the temperature of 1 lb of water 1 °F): Units: BTU/hr • ft 2 • °F/ft or BTU/hr • ft • °FFurther, k snow (loose) = 0.06, k snow (compact) = 0.20. In the range of water contents (5 to ...Frost Line Map for the United States. The type of soil plays a significant role in the likelihood and severity of frost heave. Soils with high clay and silt content retain more water and are more susceptible to heaving. Sandy and gravelly soils, on the other hand, drain water more effectively and are less prone to frost heave.This map is courtesy of the Brickwood Box and shows the frost line across the United States. 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.Well, there more then one frost line in Illinois: 1) 10" to 20" for Southern Illinois 2) 15" to 30" for Central Illinois (frost line for Peoria) 3) 20" to 35" for Northern IllinoisExterior foundations must extend below the frost line and a minimum of 12 inches (305 mm) below undisturbed soil. Foundations supported on rock or that are frost-protected in accordance with Section R403.3 are exempt from the extension below the frost line, but the 12-inch (305 mm) minimum still applies. ASCE 32 contains requirements for:As your growing season comes to an end, the nightly temperatures for Shiloh, Illinois start to go down, and therefore every day that goes by increases the chance that you'll get frost. Your risk of frost really begins around September 24, and by October 24 you're almost certain to have received at least one frost event.Are you looking for the best things to do in Joliet, California? Hee's what you need to know and enjoy on your visit. By: Author Kyle Kroeger Posted on Last updated: February 21, 2...You have a small 20% chance of getting 32° by October 2. There is a 50% chance of being hit by a 32° frost starting around October 9. You have a 80% chance of seeing 32° by October 16. Said another way, you have a 1 in 5 chance at making it to that day without a 32° night. In the Fall.Want to know when to expect your last frost of the spring, or the first frost of the fall? Enter your zip code (or City, State) below and we'll tell you what we know. Our information is taken directly from the National Weather Service and depending on the location of the reporting station for your zip code, the results may vary. Popular Plants.2015 International Building Code (IBC) - CHAPTER 18 SOILS AND FOUNDATIONS - 1809.5 Frost protection. 1809.5 Frost protection. Except where otherwise protected from frost, foundations and other permanent supports of buildings and structures shall be protected from frost by one or more of the following methods: 1.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. Two-story buildings require a minimum of 15-inch wide footings for 1,500 LBV soil. For 2,000 LBV soil or greater, two-story buildings may have 12-inch minimum wide footings.The newest hardiness zone map is based on weather data from 1991 to 2020, and like earlier versions, is divided into 13 zones across the United States. The most obvious change between the new hardiness zone map and the 2012 map is a northward progression of zones 6a-6b and 7a (Figure 1). The boundary between zones 5b and 6a, …Here on this page, we are adding some printable maps related to Illinois, USA. These maps are very interactive and useful and help you to explore this state. You may also check our other collection of Roads and Highway Maps of Illinois (IL) if you are wondering to travel in this state. Illinois State Maps Collection: 1. Illinois Map:2211.1 Structural framing. “For cold-formed steel light-frame construction, the design and installation of the following structural framing systems, including their members and connections, shall be in accordance with AISI S240, and Sections 2211.1.1 through 2211.1.3, as applicable: 1. Floor and roof systems.The 2021-2022 climatological winter average temperatures ranged from the low 20s in northern Illinois to the high 30s in southern Illinois, within 1 degree of normal statewide (Figure 4). Overall, the preliminary statewide average winter temperature was 29.5 degrees, 1.3 degrees above the 1991-2020 normal and tied for the 41 st warmest on record.For example, looking at the Air-Freezing Index map, you will notice that most of the Front Range of Colorado, all of Nebraska, Illinois, and even northern Michigan lie in the 1,000–2,000 or warmer. By cross-referencing ICC Table R403.3(1), you will find that you will need a minimum R-value of 5.6 for the vertical insulation to build at that ...You have a small 20% chance of getting 32° by September 30. There is a 50% chance of being hit by a 32° frost starting around October 8. You have a 80% chance of seeing 32° by October 16. Said another way, you have a 1 in 5 chance at making it to that day without a 32° night. In the Fall.Whether you need to plan a road trip, a commute, or a walk, MapQuest Directions can help you find the best route. You can customize your journey with multiple stops, avoid tolls and highways, and get live traffic and road conditions. You can also discover nearby attractions, restaurants and hotels with MapQuest Directions.Additionally, water and sewer pipes need to be placed below the frost lines as well. Here are the 10 states with the deepest frost lines: Alaska (100 inches) Minnesota (80 inches)…Frost Lines By State 2021. State. Frost Lines (Inches) Illinois. 36. Connecticut. 36. Missouri.Frost line (astrophysics) explained. In astronomy or planetary science, the frost line, also known as the snow line or ice line, is the minimum distance from the central protostar of a solar nebula where the temperature is low enough for volatile compounds such as water, ammonia, methane, carbon dioxide and carbon monoxide to condense into solid grains, which will allow their accretion into ... Illinois Frost Line. Back To Map. Illinois Extreme Frost Line Penetration (in inches) State Average Frost Depth: 36″. Source: U.S. Department of Commerce. Illinois Department of Transportation Hanley Building 2300 S. Dirksen Parkway Springfield, IL 62764 (217) 782-7820 or TTY (866) 273-3681Weather Map. Local Radar. Follow us on Twitter Follow us on Facebook Follow us on YouTube ILX RSS Feed Hazardous Weather Decision Support Spotter Briefing Page ... Central Illinois 1362 State Route 10 Lincoln, IL 62656 217-732-7321 (forecast recording) or 217-732-3089 Comments? Questions? Please Contact Us. Disclaimer Information Quality HelpWell, there more then one frost line in Illinois: 1) 10" to 20" for Southern Illinois 2) 15" to 30" for Central Illinois (frost line for Peoria) 3) 20" to 35" for Northern Illinois Alabama – 6 inches. Georgia – 5 inches. California – 5 inches. South Carolina – 4 inches. Louisiana – 4 inches. Hawaii – 0 inches. Florida – 0 inches. Along with these frost lines, it’s also worth checking if any permits required for your deck from the state or Homeowners Association stipulate how deep your footings must be placed. How to know the frost line before digging footings? Check the Frost Line by Zip Code Before Digging Footings. 1 What is a Frost Line. The frost line is the depth at which the ground freezes. It’s important to know the frost line depth for construction purposes. 2 When to Build. 3 Frost Line Map. 4 Frost Line by Zip Code. 5 Tips for …View free online plat map. Get property lines, land ownership, and parcel information, including parcel number and acres. $ Zoom or search to view fields. Parcel Map ... Jonesville, IL 60002: 3: Acme LLC. P.O. Box 123456 Somewheretown, IA 50003: States. View Land Value Trends With AcreValue Market Explorer.The freeze thaw cycle that take pace in that frost region can crack a concrete building foundation so its important to dig the foundation for any building down below the typical frost line. As the map shows, the typical frost depth in our region is pretty deep - specifically, in Chicago its around 4 feet.

An Interactive Map of Average Frost Days in Illinois and a list of locations in Illinois with Average Frost Days. Mini 14 folding stock california legal

frost line map illinois

The line varies by latitude, it is deeper closer to the poles. 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). Below that depth, the temperature varies, but is always above 32 °F (0 °C).For example, looking at the Air-Freezing Index map, you will notice that most of the Front Range of Colorado, all of Nebraska, Illinois, and even northern Michigan lie in the 1,000–2,000 or warmer. By cross-referencing ICC Table R403.3(1), you will find that you will need a minimum R-value of 5.6 for the vertical insulation to build at that ...An Interactive Map of Average First Frost Dates in Illinois and a list of locations in Illinois with Average First Frost DatesThe frost line in Pennsylvania (P.A.) is deep at 44 inches because of cold winters. Winter highs are 33°F (0.6°C) to 45°F (7.2°C), while lows in Pennsylvania register in the 19°F (-7.2°C) to 30°F (-1.1°C) range. It is expected to assume that the coldest states have the maximum or deepest frost lines.An Interactive Map of Average Frost Days in Illinois and a list of locations in Illinois with Average Frost DaysAdditional Gardening Related Climate Data for ZIP Code 60441 - Lockport, Illinois. 2023 Hardiness Zone: Zone 6a: -10°F to -5°F. Zone 5b: -15°F to -10°F. 2012 Hardiness Zone: Zone 5b: -15°F to -10°F. 1990 Hardiness Zone: Zone 1b: -15F to …Oct 3, 2023 · Illinois. The minimum frost depth for Illinois is not defined statewide and varies by jurisdiction. Frost depths for the three most populous cities in Illinois are given below. Chicago: 42″ (2019 Chicago Building Code, Section 1809.5) Aurora: 42″ (City of Aurora Code of Ordinances, Chapter 12, Division 12-II-7, Section 12.17-6, Table R301.2(1)) What is the depth of the frost line in Springfield Illinois? Submitted: 15 years ago. Category: Home Improvement. Ask Your Own Home Improvement Question. Share this conversation. Answered in 1 hour by: 7/10/2008. Back To Map Wisconsin Extreme Frost Line Penetration (in inches) State Average Frost Depth: 65″ Source: U.S. Department of Commerce Frost Advisory. A Frost Advisory is issued when temperatures are forecast to be in the 33°F to 36°F range with good radiation conditions. Typically, frost can occur when the temperature falls below 36°F, especially in rural areas. It is a localized phenomenon and can be quite variable across a small area. Freeze Warning/Watch.Winter Weather Advisory - cold, ice, and/or snow (two to five inches) are expected. Winter Storm Watch - severe winter weather, such as heavy snow or ice, is possible within the next day or two. Winter Storm Warning - severe ice and/or snow (six inches or more) have begun or are about to begin. Blizzard Warning - heavy snow and strong winds ...Back To Map Louisiana Extreme Frost Line Penetration (in inches) State Average Frost Depth: 4″ Source: U.S. Department of Commerce.

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