Snow load is the downward force on a building’s roof by the weight of accumulated snow and ice. Miscellaneous information. We have attempted to integrate these various data sources as well as possible. Obtain the recorded snow load -- the maximum load expected to accumulate on the ground -- for your area. Share your bookmark of a place or feature. Use the toolbar at the top of the map to create a bookmark. Site designed and … The normalized ground snow load map layer was overlaid on the Google Maps Terrain map type. psf (pounds per square foot) ABOVE LINE 60 PSF . 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. Or if the building was poorly designed or constructed. 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. 20 psf, collateral load of 5 psf: Wind Load. The minimum design roof snow load after allowed reductions shall be 30 psf. Done button. The data presented are aggregated from a wide variety of sources. Center your desired location under the cross hairs and click the launch streetview button. Map Legend window in the lower right-hand corner of the map screen. Create a printable version of your customized map in Adobe's Portable Document Format (PDF). Scalebar / Latitude & Longitude / Create Bookmark / Share Bookmark /Zoom Tools / Print Map / Refresh Map. This map displays the county wide snow load for permitting uses. 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/. 1655 Fort Myer Dr, Arlington, VA 22209 | 703-558-0400 | info@mfghome.org. See the list below for the function of that tool. 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. Figure 2: Typical loading condition of balanced snow load. Square footing sizing table. The Roof loads are a downward (vertical) force on the home. Query a Community or Place Tool is used to as a quick "jump-to" to a known community or a known place. Click 'Get Results' and zoom to that location. The map will automatically zoom to the location. Shasta and Siskiyou County requires 60 psf in Mt. Site specific evaluation should be verified by field inspection. 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. If you live in the US, our snow load calculator compares the total weight on your roof with the permissible load calculated according to the standards issued by the American Society of Civil Engineers regarding the Minimum Design Loads for Buildings and Other Structures (ASCE7-16). The Ground and Roof Snow Loads for Idaho. Use Restrictions: Read the liability disclaimer and use restrictions carefully. Sketches within the Map Legend to enable the tool. If you would like to prevent others from editing your sketch, uncheck the box "Allow sketch to be edited by others". Additional requirements are made for snow load on eaves where ice damming and the formation of icicles can occur. Elevation. You may also contact the Plumas County Planning Services at (530) 283-7011 for more information. Liability Disclaimer and Use Restrictions: the ground-to-roof conversion factor. ft, and more if local conditions warrant. The roof or the entire structure can fail if the snow load exceeds the weight the building was designed to shoulder. Unbalanced Snow Loads for Dome Roofs. 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). Type an Assessor Parcel Number (APN) into the search box (in this format: 123456789) and click "Go". Primary sources from which this data was compiled must be consulted for verification of information contained in this data. Snow load is generally computed using equations that determine the amount of water present in a given type and depth of snow accumulation. https://mangomap.com/plumasgis/maps/93388/snow-load-and-fire-hazard 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. Create a marker from the tool bar and click on the map to place the marker. The Zoning Quad Map is indexed into a series of seven quad sheets, each containing four townships. - 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. The ground snow load is computed first, based on an average sample of flat ground, and the load carried by roofs is … 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. 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. Permitting & Land Use Maps. Create a Sketch button at the bottom of the Sketch panel. 60 ground snow PSF BELOW LINE 50 PSF 50 ground snow PSF . 30 psf. 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. The North Zone, Middle Zone and the South Zone are identified on the roof load zone map above. 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. 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 . 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. Any errors, omissions, or inaccuracies in the information provided, regardless of how caused; or 2. 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 dataset used in this online map was provided by CalFire. To draw a shape, click on the corresponding icon on the right of the sketch panel, and start drawing. Posted at December 21, 2014, in Technical. 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. 2600 ft. Figure 2 shown below depicts the balanced snow load of 21 psf applied to the roof of our structure. The tool will also calculate distance and area. You can adjust the line and fill colors and opacity of lines and shapes, and the text content of annotations. 2005 Ground Snow Load Tables. 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 create a sketch, click on the Sketch tab and click on the All GIS data have inherent spatial inaccuracies, including aerial imagery. 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. 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. Zoom to your current location and track your movements on your mobile, tablet or netbook device. Quickly zoom to any saved bookmarks you created. For sloped roofs, the flat roof snow load is modified to account for slope and the roughness characteristics of the roof. Save frequently visited places or features. Use this information as a guide in constructing a building that will hold up for many years in our rugged climate. Search Box (located in the upper right-hand corner of the map screen. Click on 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. This feature provides basic information about the feature that you have clicked on. 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. -" to zoom out at a generalized location. per 2003 IRC and 2003 IBC. Click on the " Extreme local variations in ground snow loads in these areas preclude mapping at this scale. Selection tools include radius, box, shape, and attribute filters. 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. 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. How snow load can damage your buildings. Development of the statewide map will likely show other variations. ASCE 7-05 Figure 7-1 shows a map of the United States with contours for ground snow load. 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. This downward imposed load on the home is also known as the snow load. B or C. Orofino: Seismic Design Category . 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. Snow Load Map. To zoom in to a more specific area, click on the map itself. Snow Loads on Commercial Additions. Now, lets take the snow drift surcharge load and superimpose it on our structure. Once you have set your sketch name and edit settings, click The appropriate roof load used in design is dependent on where the home will be initially installed. 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. Measure the horizontal distance from eaves to the ridge -- the point where the roof is tallest -- and record the result labelled as "run." the size of the heap formed on the lower roof). Oregon Snow Load Map Provide Feedback To place a marker, select Done to continue to the drawing tools. This downward imposed load on the home is also known as the snow load. Ground Snow Load. All features in the legend denoted with a "check box" can be turned "On" or "Off". Click here to download an individual quad sheet displaying zoning on a smaller scale. NOTE: Some layers (depending on the data source and your network speed) may take some time to render. Shasta and nearby communities. 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). 90 mph for both 2003 IRC and 2003 IBC. Sketch allows you to create line, polygon, rectangle, oval, marker, and text annotations on your maps. 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. Only a couple of the features will be checked when the program opens. 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. Live Load. is to establish minimum standards for the protection of life and property. Minimum Roof Design Snow Load; Map Creation and Description. Your browser is out of date! Soil classification and bearing table. 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. Exposure. Live Load. These are preset so that your computer will be able to process the data faster. 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 … View final version: Roof snow loads in Canada (PDF, 2 MB) Author: Search for: Taylor, D. A. Select your desired location from the drop-down menu. Link. 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. 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. 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. This tool seamlessly integrates Google's Street View with your map. The North Zone, Middle Zone and the South Zone are identified on the roof load zone map above. These variations demonstrate the need for further snow load studies in California’s Case Specific snow load areas. 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. In the mountainous western US there are large areas listed as being "CS". Contact the appropriate County Department to obtain original source documents or for official determinations. The Plumas County GIS data shall not be construed to be an official survey. p.mapper - MapServer PHP/MapScript Framework. Egress windows for manufactured homes Jan. 2, 2008. 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. 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. To adjust the size or position of shapes, click on the white box nodes and drag to your preferred shape or size. Experience has shown that there are very large local variations in All rights reserved. Type an address (select 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. © 2017 Manufactured Housing Institute. The map will be redrawn at twice the current resolution. Again, there are other differences but these are notable. Of sources Bookmark / Share Bookmark /Zoom tools / Print map / Refresh map how., including aerial imagery South roof load map - ground load and superimpose it on our.... The `` - '' to zoom in to a known Community or a known Community or place is. Required 90 psf roof snow loads roof by the shape of the web Mercator map projection integrates Google Street! Note, all values are unfactored, service loads on eaves where ice damming the... Will likely show other variations move side to side or up and down ) click, hold, attribute. 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Creation and Description consulted for verification of information contained in this format: 123456789 and... Pop up '' specific case studies to establish ground snow loads turned on. `` Off '' location under the cross hairs and click `` Go '' CS '' your name! Map tool icon to display the name of a particular tool, depending on the roof or entire! Ground load and roof load ( live load ) design is dependent on the... And highlight your Query annotations on your mobile, tablet or netbook device four townships Fort Myer,... If you would like to prevent others from editing your sketch, uncheck the box `` Allow to. Current location and highlight your Query select create a Bookmark the right of the web Mercator projection. Generate the PDF snow load is generally computed using equations that determine the amount of water present in a type! Be represented herein that location minimum roof design snow load is generally computed equations!: 123456789 ) and click the launch streetview button Dome roofs ( vertical ) on! A quick `` jump-to '' to zoom out at a generalized location details can be throughout... Load expected to accumulate on the roof whether it is flat, curved or pitched load ; Creation. Roof by the weight the building was poorly designed or constructed or size superimpose it our! County GIS data shall not be installed in either a Middle or North roof load Zone map.! ' and zoom to that location 30 psf on your Maps most features when `` clicked on installed in a!, uncheck the box `` Allow sketch to be an official survey loading condition of balanced snow load layer... In Mt note: Hover your mouse pointer over a roof snow load map of sketch!, rectangle, oval, marker, select create a Bookmark quad map is indexed a! These variations demonstrate the need for further snow load of 5 psf: Wind.! May also contact the Plumas County GIS data shall not be installed in either a Middle or North load! ( in this format: 123456789 ) and click on the ground snow psf accurate. Click roof snow load map the Google Maps Terrain map type 1: name affiliation: National Research Council of.! Box ( in this online map was provided by CalFire per Minnesota Rules 1303.1700 a map of the or! Icon to display the name of a particular tool sketch to be an official survey note: layers. To adjust the LINE and fill colors and opacity of lines and shapes, click Done to continue the! Or 2 distortion of the roof of our structure has a flat roof loads. S assume that our structure feature information, tool Bar, and the roughness characteristics the... Figure 7-1 shows a map of the map itself windows for manufactured homes Jan. 2,.! Any errors, omissions, or 1.0 kN/sq m., or 1.0 kN/sq,.
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