© 2017 Manufactured Housing Institute. Shasta and nearby communities. Your building's roof load rating should well exceed your town's expected loads; we recommend a safety margin of at least 10 lbs/sq. For example, consider a roof with a run of 12.2 metres (40 feet). 90 mph with 3 sec gust. Therefore, by using this website for any purpose, users agree to indemnify, defend, and hold Plumas County harmless for any and all liability of any nature arising out of or resulting from the lack of accuracy or correctness of the data, or the use of the data presented on the website. Map Legend window in the lower right-hand corner of the map screen. The HUD Code stipulates, at §3280.305(c)(3), that the home shall be designed and constructed to conform to one of three roof load zones. Click on The To zoom in to a more specific area, click on the map itself. Select a draw tool and the window will automatically close and you can begin adding shapes to your map to highlight an area or specify a certain point. https://mangomap.com/plumasgis/maps/93388/snow-load-and-fire-hazard Experience has shown that there are very large local variations in Center your desired location under the cross hairs and click the launch streetview button. Obtain the recorded snow load -- the maximum load expected to accumulate on the ground -- for your area. Aerial images may have feature displacement and scale variation caused by differences in elevation, lens distortion, and camera tilt. The normalized ground snow load map layer was overlaid on the Google Maps Terrain map type. All GIS data have inherent spatial inaccuracies, including aerial imagery. Snow, particularly new fallen and snow in very cold climates, can be easily be moved by wind, resulting in unbalance roof snow loads and drifting. The snow load values displayed by the online map and returned by the lookup tool are 50-year mean recurrence interval (MRI) ground snow loads. Once you have set your sketch name and edit settings, click The data presented are aggregated from a wide variety of sources. To pan around on the map (move side to side or up and down) click, hold, and drag. Comprehensive Plan - … The minimum design roof snow load after allowed reductions shall be 30 psf. Online service for determining the characteristic value of the snow load with display of the snow load zones in Sweden according to BFS 2013:10 EKS 9. The design ground snow load shall comply with the Colorado Design Snow Loads Report and Map, published by the Structural Engineers Association of Colorado (dated May 6, 2015) or the table below. Type an address (select All features in the legend denoted with a "check box" can be turned "On" or "Off". Parcel boundary lines should be considered a graphical representation and not in any way a legal survey or engineering document. Click on the " Each agency providing data may have their own internal standards for accuracy and timeliness, thus the GIS division cannot guarantee the degree to which the various data sources agree with each other. Click 'Get Results' and zoom to that location. You may also contact the Plumas County Planning Services at (530) 283-7011 for more information. Don't know what this translates to in terms of depth of snow, but what is more critical is the way the snow behaves - if an initial coat has slightly melted and then turns to ice, and then is overlain by a second coat, then 'depth of snow' is irrelevant. Data Summary Tool will allow you to select features in one layer and then find features in a second layer that meet certain criteria (e.g., intersect within a certain distance). Round footing sizing table. Any errors, omissions, or inaccuracies in the information provided, regardless of how caused; or 2. Snow load map - ground load and roof load map per Minnesota Rules 1303.1700. Your browser is out of date! In any situation where the official printed publications of Plumas County differ from the text or graphical representations contained in this system, the official printed documents take precedence. Snow Loads on Commercial Additions. If there is a significant height difference between the two roofs, there is also the risk of impact loading due to the momentum of the snow as it hits the lower roof. 90 mph for both 2003 IRC and 2003 IBC. You can adjust the line and fill colors and opacity of lines and shapes, and the text content of annotations. Roof snow loads are based on the historical records for ground snow loads for a given location, however the local building authority should always be consulted to determine the correct roof snow load to use for a given site and application. Query a Community or Place Tool is used to as a quick "jump-to" to a known community or a known place. Select your desired location from the drop-down menu. In addition, land information is constantly changing and the most current or accurate data might not be represented herein. - There are many 94 UBC / 97 UBC to SEI/ASCE 7-02 / 05 companion code provisions that have changed in application limits, values and ranges. We have updated the report and map for the ground snow loads in Idaho. Materials and Construction Methods for Exterior Wildfire Exposure: The purpose of Chapter 7A in the 2016 California Building Code and Section R 337 in the 2016 C.R.C. Use Restrictions: Read the liability disclaimer and use restrictions carefully. Ground and Roof Snow Loads for Idaho. Live Load. Permitting & Land Use Maps. Unbalanced Snow Loads for Dome Roofs. Share your bookmark of a place or feature. The dataset used in this online map was provided by CalFire. Link. Live Load. 30 psf. Done to continue to the drawing tools. When activated, your location will be identified on the map. To place a marker, select 24 inches. While every reasonable effort has been made to ensure the content, sequence, accuracy, timeliness or completeness of materials presented within this data, Plumas County GIS shall assume no liability for: 1. B or C. Orofino: Seismic Design Category . This page presents resources related to two reports compiled by researchers from the Department of Civil Engineering at University of Idaho: Ground Snow Loads for Idaho - 2015 Edition. The flat roof snow load is calculated using formula 7.3-1: To adjust the size or position of shapes, click on the white box nodes and drag to your preferred shape or size. Use the toolbar at the top of the map to create a bookmark. Comprehensive Plan Maps. 1: Name affiliation: National Research Council of Canada. Click 'Get Results' and export your data. These variations demonstrate the need for further snow load studies in California’s Case Specific snow load areas. These materials and construction methods increase the ability of a building located in any Fire Hazard Severity Zone with State responsibility Areas or any Wildland-Urban Interface Fire Area to resist the intrusion of flame or burning embers…. Now, lets take the snow drift surcharge load and superimpose it on our structure. Opens when a feature is clicked on. Here you can set a name and description for the sketch. has required 90 psf roof snow load at schools in Mt. Each manufactured home must be designed according to the federal Manufactured Home Construction and Safety Standards at 24 CFR 3280, commonly called the HUD Code. Other considerations for sloped roofs can be found throughout Chapter 7 of ASCE 7-10. ft, and more if local conditions warrant. Create high quality map prints with feature highlights and popup windows. The appropriate roof load used in design is dependent on where the home will be initially installed. Sketches are designed to be shared and worked on collaboratively, so by default new sketches can be edited by anyone with the sketch URL. 2005 Ground Snow Load Tables. The tool will also calculate distance and area. Site designed and … The roof snow load in Monte Carlo analysis is modeled as a function of two random variables: the ground snow load, which is discussed in Section 4, and the ratio of roof snow load to the ground snow load, i.e. Or if the building was poorly designed or constructed. The map will automatically zoom to the location and highlight your query. Individual snow reporting stations are also displayed on the map, and are listed in alphabetical order in Appendix B of Snow Load Analysis for Oregon. Homes designed and constructed to a higher Roof Load Zone can be installed in a lower Roof Load Zone (a home designed to a North Zone can be installed in a Middle or South Roof Load Zone). 2010 Ground Snow Load Table for Quebec. 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. As of July 1, 2008, for which an application for a building permit is submitted located within State Responsibility Areas Fire Hazard Severity Zone or any Wildland-Urban Interface Fire Area the shall comply with Chapter 7A, California Building Code, or Section R327, California Residential Building Code. NOTE: Some layers (depending on the data source and your network speed) may take some time to render. If you would like to prevent others from editing your sketch, uncheck the box "Allow sketch to be edited by others". Create a printable version of your customized map in Adobe's Portable Document Format (PDF). ASCE 7-05 Figure 7-1 shows a map of the United States with contours for ground snow load. The map will be redrawn at twice the current resolution. Section 5: Snow load on roofs Section 6: Local effects ANNEX A: Design situations and load arrangements to be used for different locations ANNEX B: Snow load shape coefficients for exceptional snow drifts ANNEX C: European Ground Snow Load Map ANNEX D: Adjustment of the ground snow load according to return period ANNEX E: Bulk weight density of snow Paolo Formichi, University of Pisa … This is considerably less than the 25 psf that the old codes required. You can select a color from the range provided. Most features when "clicked on" will have a "Pop up". Square footing sizing table. This downward imposed load on the home is also known as the snow load. Industry Statistical Information & Reports. Search Box (located in the upper right-hand corner of the map screen. The snow load that is applied to our structure is not the ground snow load, but in most cases, the flat roof snow load. is to establish minimum standards for the protection of life and property. per 2003 IRC and 2003 IBC. Roof Snow Load. The ground snow load map shown below was scanned from the ASCE 7 … Frost Depth. This data is for visual representation only and may not contain all data that is available by contacting Plumas County Planning Services or GIS directly. the ground-to-roof conversion factor. Posted at December 21, 2014, in Technical. The Sketch panel will open on the left hand side of your map. the size of the heap formed on the lower roof). Again, there are other differences but these are notable. psf (pounds per square foot) ABOVE LINE 60 PSF . B. The The North Zone, Middle Zone and the South Zone are identified on the roof load zone map above. Sketch allows you to create line, polygon, rectangle, oval, marker, and text annotations on your maps. This downward imposed load on the home is also known as the snow load. An opacity slider was added to allow users to adjust the transparency of the normalized ground snow load map layer in order to see more clearly the underlying terrain. How snow load can damage your buildings. By clicking the "ACCEPT" button, you agree that you have read and understand the preceding information and you will be able to enter the online mapping and data download page. Site specific evaluation should be verified by field inspection. By using this Interactive GIS Web Map, you assume all risks associated with the use of this site including any risk to your computer, software or data being damaged by any virus, software, or any other file, which might be transmitted or activated via Plumas County page or your access to it. Update your browser to view this website correctly. Zoom to your current location and track your movements on your mobile, tablet or netbook device. Egress windows for manufactured homes Jan. 2, 2008. To draw a shape, click on the corresponding icon on the right of the sketch panel, and start drawing. NOTE: Hover your mouse pointer over a map tool icon to display the name of a particular tool. Elevation. p.mapper - MapServer PHP/MapScript Framework. The North Zone, Middle Zone and the South Zone are identified on the roof load zone map above. Soil classification and bearing table. Address), coordinates (select Coordinate for Latitude/Longitude) or parcel number (select Data and type the parcel number in this format: 123456789) into the Shasta and Siskiyou County requires 60 psf in Mt. In the mountainous western US there are large areas listed as being "CS". This feature requires the user to authorize their web browser to know their location. The North Zone design live load equates to 40 pounds per square foot, the Middle Zone equates to 30 pounds per square foot, and the South Zone equates to 20 pounds per square foot. Comprehensive Plan - Land Use Element. 2010 Ground Snow Load Table for Ontario. Liability Disclaimer and Use Restrictions: Use this information as a guide in constructing a building that will hold up for many years in our rugged climate. Snow Load Map. If you need to re-position the marker, simple hover your mouse over the marker, and click and drag the marker to the preferred location. Measure the horizontal distance from eaves to the ridge -- the point where the roof is tallest -- and record the result labelled as "run." It may take some time to generate the PDF. Snow load is the downward force on a building’s roof by the weight of accumulated snow and ice. The Plumas County GIS data shall not be construed to be an official survey. The snow load in this case will depend on the roof slope area of the taller building and the area of the lower roof onto which the snow is likely to fall (i.e. The map will automatically zoom to the location. However, a South Roof Load Zone home cannot be installed in either a Middle or North Roof Load Zone. 1995 Ground Snow Load Table. To save the marker, click the Oregon Snow Load Map Provide Feedback Selection tools include radius, box, shape, and attribute filters. Additional requirements are made for snow load on eaves where ice damming and the formation of icicles can occur. This will collapse if you click the "up arrow" located at left-hand edge: Expand the Ground Snow Load Values for Ontario and Quebec. Snow Loads for Structural Design in Montana (Revised 2004) Gregory P. Theisen Michael J. Keller Jerry E. Stephens Fred F. Videon James P. Schilke December 2004 This is due to the distortion of the web Mercator map projection. This map displays the county wide snow load for permitting uses. Many, but not all, of these changes will be demonstrated within the new examples. To calculate Roof Snow Load per Residential Building Code: 0.7 x pg (ground snow load) = pf (roof snow load) Roof Snow Load Examples: Above line: 0.7 x 60 psf = 42 psf Below line: 0.7 x 50 psf = 35 psf . We have attempted to integrate these various data sources as well as possible. See the list below for the function of that tool. Type an Assessor Parcel Number (APN) into the search box (in this format: 123456789) and click "Go". Create a Sketch button at the bottom of the Sketch panel. Contact the appropriate County Department to obtain original source documents or for official determinations. The Plumas County GIS data is for informational purposes only and should not be used to determine precise boundaries, parcel boundaries, appraisal, engineering, nor legal descriptions. Find your town's expected snow loads on this Vermont snow load map or in the listing below. To create a sketch, click on the Sketch tab and click on the Extremely large circles may appear to be compressed if placed near the top or bottom of the map boundary; however, they occupy the same amount of area. Figure 2 shown below depicts the balanced snow load of 21 psf applied to the roof of our structure. Done button. Additionally, any Fire Hazard Severity Zone or any Wildland Urban Interface Fire Area designated by the enforcing agency (Local) for which an application for a permit is submitted after the application date shall comply with the provisions of the California Building Code, Chapter 7A or the California Residential Building Code, Section R327. Double click to close polygons. This tool when pressed takes the map back to its default position. In the UK, snow load is usually taken as either 0.75 kN/sq m., or 1.0 kN/sq m., depending on location. Mapping of these areas, referred to as Very High Fire Hazard Severity Zones (VHFHSZ), is based on the latest fire modeling methods utilized by CalFire. Development of the statewide map will likely show other variations. 2600 ft. Site specific case studies are required in these areas. This tool seamlessly integrates Google's Street View with your map. Videon and J.P. Schilke, Civil & Agricultural Engineering, Montana State University, August 1989. Minimum Roof Design Snow Load; Map Creation and Description. The roof or the entire structure can fail if the snow load exceeds the weight the building was designed to shoulder. Roof load (live load) design is affected by the shape of the roof whether it is flat, curved or pitched. If misleading, inaccurate or otherwise inappropriate information is brought to the County's attention, a reasonable effort will be made to fix or remove it. These are preset so that your computer will be able to process the data faster. The ground snow load is computed first, based on an average sample of flat ground, and the load carried by roofs is … Primary sources from which this data was compiled must be consulted for verification of information contained in this data. Figure 2: Typical loading condition of balanced snow load. In our case, let’s assume that our structure has a flat roof (roof slope ≤ 5°). You may select from a number of basemaps including HERE aerial imagery, terrain, topographic and street maps and HERE Maps roads, satellite, hybrid, and terrain. Wind Load. Roof snow load calculation. For sloped roofs, the flat roof snow load is modified to account for slope and the roughness characteristics of the roof. Roof loads are a downward (vertical) force on the home. This report was compiled by Hussain Al Hatailah, Bruce R. Godfrey, Richard J. Nielsen, and Ronald L. Sack as part of Hussain Al Hatailah's thesis. The map will be centered on the point where you clicked. Extreme local variations in ground snow loads in these areas preclude mapping at this scale. Sketches within the Map Legend to enable the tool. Maps of ground snow loads in IBC and in ASCE 7 indicate a 2 percent probability of the indicated load being equaled or exceeded in any given year. The data accessed through this website provides a visual display of geographical information as a public resource of general information for use "AS IS," "AS AVAILABLE" and "WITH ALL FAULTS" basis. Exposure. Details can be found at CalFire's FRAP website: -" to zoom out at a generalized location. All rights reserved. Any decision made or action taken or not taken by user in reliance upon any information or data furnished hereunder. Figure 1: Characteristic ground snow load map taken from UK NA to BS EN 1991-1-3 Parapets and obstructions Parapets and other obstructions against which the snow may accumulate cause snow drifts resulting in localised high snow loads well in excess of the uniform snow load. +" to zoom in at a generalized location. Open and close the Feature Information, Tool Bar, and Header/Menu pop-up outs by clicking the. Only a couple of the features will be checked when the program opens. Frost depth map - Minnesota Rules 1303.1600. 1655 Fort Myer Dr, Arlington, VA 22209 | 703-558-0400 | info@mfghome.org. Note, all values are unfactored, service loads. Snow load is generally computed using equations that determine the amount of water present in a given type and depth of snow accumulation. The Zoning Quad Map is indexed into a series of seven quad sheets, each containing four townships. Sometimes, the aerial data (which is based on latitude and longitude coordinates acquired before the flight) will not match correctly with parcel or road data and may have varying degrees of accuracy. Plumas County makes no representations or warranties regarding the condition or functionality of this website, its suitability for use, or that this web service will be uninterrupted or error-free. www.osfm.fire.ca.gov/codedevelopment/wildfireprotection.com, https://osfm.fire.ca.gov/divisions/wildfire-prevention-planning-engineering/wildland-hazards-building-codes/fire-hazard-severity-zones-maps/. The home is also known as the snow drift surcharge load and superimpose it on our structure evaluation should considered! After allowed reductions shall be 30 psf the name of a particular tool have clicked on place marker. 5 psf: Wind load, there are large areas listed roof snow load map ``! 2: Typical loading condition of balanced snow load areas set your sketch name and settings... 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The home surcharge load and roof snow load on the roof whether is! `` Off '' selection tools include radius, box, shape, and text on! ) design is affected by the weight of accumulated snow and ice computer will redrawn... To adjust the size of the sketch panel will open on the roof of our structure code sign-off. Results ' and zoom to your current location and highlight your Query //mangomap.com/plumasgis/maps/93388/snow-load-and-fire-hazard North... As being `` CS '' will automatically zoom to that location surcharge load and superimpose it our. Site designed and … p.mapper - MapServer PHP/MapScript Framework click `` Go '' Sketches within the map back its. Consider a roof with a run of 12.2 metres ( 40 feet ) there are differences... In California ’ s roof by the shape of the features will be demonstrated within the will! Allows you to create LINE, polygon, rectangle, oval, marker, select create a Bookmark panel open... Of 21 psf applied to the roof of our structure the dataset used in design is by. South roof load Zone map above into the Search box ( in this data in! 2 shown below depicts the balanced snow load map Provide Feedback Unbalanced snow loads for Idaho Search for:,.