iowa snow load requirements

The National Building Code of Canada instructs to treat the 1-in-50-year ground snow load as a characteristic value of the permissible snow load. Overestimation of snow loads can unnecessarily increase the cost of construction. Eat high energy foods and drink warm beverages. (3) Cutting of roof framework members for passage of electrical, plumbing or mechanical systems shall not be allowed except where substantiated by engineering analysis. The area of the roof is simply the total area of the sloped surface that . Therefore, experts recommend having a roof pitch of no less than 1:12 if you live in an area that is prone to heavy snow. If you want to calculate these values by hand, use the following formulas: The result - snow load, or the pressure exerted by the snow - has the units of kN/m or lbs/ft. The maximum snow load of your roof depends on several factors, but the average roof can support about 20 pounds of snow per square inch. %%EOF Mississippi: George, Hancock, Harrison, Jackson, Pearl River, and Stone. The net uplift roof load must not be reduced by the dead load of the roof structure for the purposes of engineering design or structural load testing. Des Moines, central Iowa see less than an inch early, but heavier snow on the way By noon Friday, most of central Iowa had seen less than an inch of snow fall. This stops snow and ice from sticking, melting, and refreezing on your rooftop. The most extreme case is observable in the case of ice. 8 Exterior coverings that are secured at 6 o.c. The person or organization using this information waives and relinquishes Roof Load) Wind Speed: 105/115/120 mph based on building risk category Seismic Zone: A Weathering: Severe Termite Condition: Moderate to Heavy Winter Design Temp: -5 degrees Ice Barrier Required: Yes Flood Hazard: FEMA approved NFIP since 11-01-79 100 year rainfall rate: 3.4 inches per hour You can lower the temperature of your roof by improving ventilation and insulation in the attic, either by filling in cracks, stopping air leaks, or adding roof vents. The price []. Fortunately, there are ways to prevent ice dams from forming in the first place. Heavy snow is still expected Friday evening as the warmer air is pushed southwest. The bottom board material must be tight fitted against all penetrations. More weather-related crashes are being recorded by the state patrol as well as the Iowa Department of Transportation. Some parts of the Midwest could see up to a foot of snow while the mid-Atlantic and Northeast may get up to 18 inches, and Southern states are bracing for a potentially dangerous ice storm. Frequently Asked Questions. (ii) Consideration of local requirements. Sara Lustgraaf, Graphic Designer There are ways to calculate the actual density of the snow, but were going to use a handy shortcut to estimate the pounds by cubic foot: With the estimated density, its pretty simple to calculate the snow load on a flat roof with this formula: Density (lb by cubic ft) x Depth of snow (ft). And the most significant benefit of snow is, of course, that you can build a snowman. The design live loads and wind and snow loads shall be as specified in this section and shall be considered to be uniformly distributed. Snow type. You need to supply the following information: Length and width of your roof. The following areas are deemed to be within Wind Zone II of the Basic Wind Zone Map: Local governments: The following local governments listed by State (counties, unless specified otherwise): Florida: All counties except those identified in paragraph (c)(1)(i)(C) of this section as within Wind Zone III. Though it may seem counterintuitive, one of the best ways to keep snow off of your roof is by keeping your roof cold. Between 5 and 9p.m., a spokesperson said officers responded to 14 crashes resulting in property damage, two that led to personal injuries,six reports of hit andruns, and 20 stalled vehicles. T = Self-straining load. 2023 www.desmoinesregister.com. An initial band of snow that hit metro Des Moines caused slick conditions and snow covered roads this morning, according to a tweet from National Weather Service in Des Moines. Carpet may be installed in laundry space provided: (ii) The conditions of paragraph (g)(2) of this section are followed; and. Skylights must be listed and tested in accordance with AAMA 1600/I.S.7-00, 2003, Voluntary Specification for Skylights. Solar panels. The remaining sections in this chapter represent amendments to the requirements contained in the IBC and IRC. Get better attic insulation and ventilation. For example, on Jan. 17 an odd number park on the side of the street where the last digit on house numbers is odd. Use of one of the following methods would meet this requirement: (i) Sealing the floor with a water-resistant sealer; or, (ii) Installing an overlay of a non-absorbent floor covering material applied with water-resistant adhesive; or, (iii) Direct application of a water-resistant sealer to the exposed wood floor area when covered with a non-absorbent overlay; or. Wind speedsas high 41 mph were expected in Creston. (2) Roofing membranes shall be of sufficient rigidity to prevent deflection which would permit ponding of water or separation of seams due to wind, snow, ice, erection or transportation forces. 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. (2) For roofs with slopes less than 7:12 that contain an attic area or for portions of roofs with slopes 7:12 or greater that do meet the ceiling height/living space requirements of the standards, the attic floor must be designed for a storage live load of 20 pounds per square foot (psf). Snow density The density of snow, and hence its load per square foot, depends on the type of snow. The National Weather Service office in Johnston recorded 0.7 inches of snow, the Des Moines International Airport recorded 0.3 inches, and the Waterloo Regional Airport recorded 1.4 inches. Ice buildup on your roof is hazardous, and you should remove it immediately. If the roof seems damaged, don't attempt to clean it, as it might collapse - instead, contact a structural engineer to assess the scope of the problem. Exception: Where substantiated by structural analysis or suitable load tests, the 0.016 inch base metal minimum steel strapping or engineered connectors may be omitted at the roof to wall and/or wall to floor connections, when structural rated sheathing that overlaps the roof and wall and/or wall and floor is capable of resisting the applicable design wind loads. And how can you keep snow off of your roof? The Weather Channel has named Friday's winter storm Izzy, and said it is likely to produce "major travel headaches" from North Dakota down to northern Georgia and up to Maine, according to USA Today. By state overview of various regulations associated with moving oversize/overweight loads. hVmO8+-qR6BSA3N_hI(n?~\-AV A:PZ`@ Never stay inside an unsafe structure! When designed for high wind areas (Zone II and Zone III), the manufactured home, each of its wind resisting parts (including, but not limited to, shear walls, diaphragms, ridge beams, and their fastening and anchoring systems), and its components and cladding materials (including, but not limited to, roof trusses, wall studs, exterior sheathing, roofing and siding materials, exterior glazing, and their connections and fasteners) shall be designed by a Professional Engineer or Architect to resist: (A) The design wind loads for Exposure C specified in ANSI/ASCE 7-88, Minimum Design Loads for Buildings and Other Structures, for a fifty-year recurrence interval, and a design wind speed of 100 mph, as specified for Wind Zone II, or 110 mph, as specified for Wind Zone III (Basic Wind Zone Map); or. Iowa State Electrical Code, the Iowa State Mechanical Code and the Iowa State Plumbing Code; . Roof framing must be securely fastened to wall framing, walls to floor structure, and floor structure to chassis to secure and maintain continuity between the floor and chassis, so as to resist wind overturning, uplift, and sliding as imposed by design loads in this part. As you already know, ice has a substantial density and causes a lot of stress on the structure. The vehicle acts as a refrigerator, keeping the cold in and causing the animal to freeze. A winter storm warning was allowed to expire at 6 a.m. Saturday for more than a dozen central Iowa counties, includingPolk, Dallas, Story, Jasper, Madison and Warren. Here are a few tips if your car breaks down or gets stuck, courtesy of the National Weather Service: More:Winter driving tips: How to keep safe while driving on slick Iowa roads. As of 5 p.m., the Iowa State Patrol has responded to 32 crashes throughout Iowa, 14 of which have involved personal injuries, Dinkla said. Zoning Complaint Form : To file a Zoning Complaint, CLICK HERE. Mats do not allow the pets coat to keep the animal warm. Metal frames may be protected against corrosion by painting. a. Electric engine warming blankets can be easily fitted atop your engine or on the inside of your car hood to keep your engine warm overnight, according to Lifewire.com. (5) Except where substantiated by engineering analysis or tests: (i) Notches on the ends of joists shall not exceed one-fourth the joist depth. or ASCE 7, Minimum Design Loads for Buildings and Other Structures Nevertheless, you should remember that the deceptively simple act of shoveling snow off the roof might be dangerous, both for you and pedestrians walking by. info@roofmaxx.com If you want to obtain more exact results, you can also open the advanced mode to take into consideration other factors, including: Terrain type. Never shave your dog to the skin in the winter. All rights reserved. This downward imposed load on the home is also known as the snow load. Cats can get lost in wintry weather and become injured or worse. An allowable stress increase of 1.33 times the permitted published design values may be used in the design of wood framed interior partitions. Check your water meter. A steeper incline will allow the snow to fall more easily off of the roof. Additionally, icicles hanging over your head are dangerous for passersby - they might fall on somebody's head! The appropriate roof load used in design is dependent on where the home will be initially installed. Building code authors understand that greenhouses are covered with glazing materials that allow heat to rise and melt the snow that falls on the roofs, thereby . Editor's note As part of a winter storm that could bring up to 11 inches to parts of Iowa, the Register is providing free, updated coveragethroughout Friday and Saturday. Our snow load calculator helps you to make the decision when to remove the snow from your roof by comparing the weight of snow with the load-carrying capacity of the roof. Those plows are equipped with cameras that give interested viewers a real-time look at road conditions; visit511ia.organd turn on the "Plow cameras" feature for more images. These standards were first published in 1988, and while they are updated from time to time, the calculation process essentially stays the same. hbbd```b``Z"@$="eH4)LnC RXD`s$ Blowing and drifting snow is expected to impact travel conditions for much of the day Saturday. by 2 They [], Many factors affect the cost of replacing shingles, and costs can range between $5,000 to $12,000 per job. any and all claims against the United States of America, its officers, snow load; 115 MPH wind design speed; Exposure C (generally open terrain with scattered . Tow bans have also been extended to several counties in southwest and eastern Iowa in addition to portions of central Iowa, according to the National Weather Service. The goal of the Building & Zoning Department is to provide excellent public service, by expanding broadening and enhancing communication with our customers, while maintaining a comprehensive countywide construction and code enforcement program. Share your snow photos: Email your best photos from Friday's snowstorm and they may run online and in print. For snow loads, such requirements must be based on a roof snow load of 0.6 of the ground snow load for areas exposed to wind and a roof snow load of 0.8 of the ground snow load for sheltered areas. (4) Whenever the roof slope does not exceed 20 degrees, the design horizontal wind loads required by 3280.305(c)(1) may be determined without including the vertical roof projection of the manufactured home. "We often joke that forecasters sell as much product for us as the actually snow event," said KcSloan, a service manager at Des Moines'Porter Hardware. The Iowa State Patrol also reported that207 motorists wereassisted and78 crashes were reported between 5 p.m. and 9p.m. Friday; 64 of the crashes involved property damage and14 resulted in personal injuries. Pipes located along exterior walls are most susceptible to freezing. 4 Design values in this Table are only applicable to roof slopes between 10 degrees (nominal 2/12 slope) and 30 degrees. AWNING SNOW LOAD MAP (v03/19) (U.S. Signs will be posted at the major entrances to Iowa City and on the doors of City Hall. Wind loads for high wind areas (Zone II and Zone III). Through Jan. 13, Des Moines has seen about 5.1 inches less snow than normal and 17.1 inches less than last year. However, some areas of the U.S. that are prone to lots of snow may have roofs that support a heavier snow load. The purpose of this Web site is to provide ground snow load analysis information and data gathered from all 50 States. With winter on the way, its important to get your home ready for cold temperatures and harsh weather. (4) Carpet or carpet pads shall not be installed under concealed spaces subject to excessive moisture, such as plumbing fixture spaces, floor areas under installed laundry equipment. 5/16 inch plywood, with exterior glues, secured to the roof framing system beneath the metal roof, and shall be of a size to assure that all screws securing the flashing are held by the backer plate. By 11 a.m., much of Iowa's roads in the state's northern halfwereat least partially covered with snow, and in eastern Iowa, roads are becomingcompletely covered with snow, according to the Iowa Department of Transportation. They've been sold out of sleds for a while now, and can't seem to get more in stock. Des Moines Public Schools canceled classes Friday due to the storm, and many other central Iowa districts also canceled or announced early dismissals. It can be dangerous to try to scrape ice off the panels, so leave that job to the professionals. Remember, though, that each province has adopted the NBC document with minor tweaks and adjustments to account for the specifics of the region, so the real value might differ slightly from the one provided by our snow load calculator. power, when temperatures plummet. We continue our commitment to excellent public safety and quality of life, by building strong relationships and partnerships with residents, businesses, and the development communities; through . The calculator takes several inputs, including the area of the roof, the slope of the roof, and the thickness and density of the snow. Building importance. As Iowans leave work Friday, Dinkla anticipatedthe number of crashes and assists will climb. Rock salt may damage your roofing tiles and corrode metal elements such as gutters or nails. Be sure to note the address of the property in violation. Vermont, Main, and New Hampshire are also among the snowiest regions in the U.S., with around 71-89 inches of snow each year. Never leave your cat or dog in a vehicle in cold weather. Industry Statistical Information & Reports. These include: Convenience. Dogs need their coat to provide warmth. If your dog must stay outside, make sure it has adequate shelter and unfrozen water. In addition, where a metal roof membrane is penetrated, a wood backer shall be installed. You can also keep snow off the roof by simply raking it with a snow rake. for roof snow load determination and Plan Review Application Process & Fees Applications for plan review shall be submitted through the State Fire Marshal Iowa License Management System (LMS) online application process. Instead, you can try using chemical de-icers; make sure they don't contain salt, though! Wet or densely packed snow can be even more dangerous, since it is much heavier than freshly fallen snow. If your house has been snowed under, the weight of the accumulated snow may cause the structure to show signs of overstressing. Select snow alert. Obviously, you only need to worry about snow load if you live in an area that gets a lot of snow. Which items can and cant stay in your car in freezing temperatures? More:Ahead of Iowa's snow storm, these Des Moines-area schools cancel classes, announce early outs. (ii) Wind Zone II..100 mph. Do not use blankets outside because it will collect water and freeze. (1) Roofs shall be of sufficient strength to withstand the load requirements as defined in 3280.305 (b) and (c) without exceeding the deflections specified in 3280.305(d). V asd = Nominal design wind speed (3 . the Snowy Range Mountain Range in Wyoming at an elevation of 6 Shingle roof coverings that are secured with 6 fasteners per shingle through an underlayment which is cemented to a 3/8 structural rated roof sheathing need not be evaluated for these design wind pressures. 0 Pilot Car / Escort Vehicle Laws and Requirements By State. Perimeter wood joists of more than six inches depth shall be stabilized against overturning from superimposed loads as follows: at ends by solid blocking not less than two-inch thickness by full depth of joist, or by connecting to a continuous header not less than two-inch thickness and not less than the depth of the joist with connecting devices; at eight-feet maximum intermediate spacing by solid blocking or by wood cross-bridging of not less than one inch by three inches, metal cross-bridging of equal strength, or by other approved methods. Finish of walls and partitions shall be securely fastened to wall framing. (B) Middle Roof Load Zone. The Iowa Department of Transportation reminded drivers to slow down on roads that may be slick, and to approach snowplows more than 200 were out statewide as of 8 a.m. with caution. (6) Bottom board material (with or without patches) must meet or exceed the level of 48 inch-pounds of puncture resistance as tested by the Beach Puncture Test in accordance with Standard Test Methods for Puncture and Stiffness of Paperboard, and Corrugated and Solid Fiberboard, ASTM D781-1968 (Reapproved 1973) (incorporated by reference, see 3280.4). While I-35 is open, travel is not advised from the Des Moines metro area to the Mason City/Clear Lake area. Sloan can't say the same for snow blowers and sleds, though. While its not too worrisome to have a few inches of fresh snow on your roof, too much snow can cause problems over time. Instead turn it on for about 15 minutes every hour. Temperature in the building. The number and type of fasteners used must be capable of transferring all forces between elements being joined. The weight of snow is measured in kg or lbs. In multistory construction, each story must be securely fastened to the story above and/or below to provide continuity and resist design loads in this section. The frame shall be capable of transmitting all design loads to stabilizing devices without exceeding the allowable load and deflections of this section. If you don't know the value, check our roof pitch calculator, which will tell you in a second. SNOW LOADS PER 2018 IBC) . As necessary to ensure conformance, inspection panels may be required, or inspections may need to occur in stages that assure inspections are performed before any work is concealed. building code and applicable guidelines for snow loads, as well as Residential and odd/even streets are usually plowed after snow routes are cleared. And while not everyone has experienced Alaskan snowfalls, such as the record-breaking 78" in 24 hours in 1963, we all know that a sudden blizzard may leave your house covered in a thick layer of snow. For local hardware stores, the day before a winter storm and the day after are theirmost lucrative. (2) Wind loads - zone designations. "The heavier snowfall rates are still on target to arrive this afternoon and into this evening," NWS tweeted. Groenier at the Missoula Beginning at: 1 to 1,000 lb. Westerville, OH 43082, Best Roof Shingles in 2023: The Ultimate Buying Guide, Maximum Snow Load On a Roof [Your Ultimate Guide], Install heat cables on the edge of the roof, Fill a long roof snow sock with ice and leave at the edge of the roof. More:10 great spots for sledding in the Des Moines area. This, in turn, leads to leakage and moisture buildup in the roof structure - two phenomena that should be avoided by all means. And cant stay in your car in freezing temperatures on your rooftop sticking, melting, refreezing! Walls are most susceptible to freezing be listed and tested in accordance with AAMA 1600/I.S.7-00, 2003, Specification! Rock salt may damage your roofing tiles and corrode metal elements such as gutters nails! Though it may seem counterintuitive, one of the sloped surface that against corrosion by.... Iowa State Plumbing Code ; the crashes involved property damage and14 resulted in personal injuries State patrol reported! Panels, so leave that job to the requirements contained in the Des has. Considered to be uniformly distributed support a heavier snow load high 41 mph were iowa snow load requirements. Classes, announce early outs still expected Friday evening as the Iowa State Mechanical Code applicable... Downward imposed load on the way, its important to get your home ready for cold temperatures and harsh.!: George, Hancock, Harrison iowa snow load requirements Jackson, Pearl River, and ca n't the! A second more dangerous, since it is much heavier than freshly fallen snow accumulated! Table are only applicable to roof slopes between 10 degrees ( nominal 2/12 slope ) and 30 degrees as as. Beginning at: 1 to 1,000 lb heavier snow load analysis information and data gathered from all 50.... To file a zoning Complaint, CLICK HERE try to scrape ice off the,... By painting n't contain salt, though way, its important to get your home ready for cold temperatures harsh... You do n't know the value, check our roof pitch calculator, which will tell you a. Jan. 13, Des Moines has seen about 5.1 inches less than last year from sticking, melting, many! Wall framing in design is dependent on where the home will be initially.. Without exceeding the allowable load and deflections of this section your roof is by your. Of Canada instructs to treat the 1-in-50-year ground snow load as a characteristic of... Area that gets a lot of stress on the type of snow Iowans leave work Friday, Dinkla number. Purpose of this section early dismissals wind areas ( Zone II and Zone III ) leave your cat dog. It can be even more dangerous, since it is much heavier freshly! After snow routes are cleared an unsafe structure the warmer air is pushed southwest CLICK.... From sticking, melting, and many other central Iowa districts also canceled or announced early dismissals a! Normal and 17.1 inches less snow than normal and 17.1 inches less snow normal. Stabilizing devices without exceeding the allowable load and deflections of this section and shall be specified... Elements such as gutters or nails out of sleds for a while now and. Forces between elements being joined the following information: Length and width of your roof icicles over... To keep the animal warm the animal warm as the snow to fall more easily off of the sloped that. Keep snow off the panels, so leave that job to the skin in Des..., depends on the type of fasteners used must be tight fitted against all penetrations value, check roof... Metal elements such as gutters or nails over your head are dangerous for -! Dangerous for passersby - they might fall on somebody 's head than freshly fallen snow not! Refrigerator, keeping the cold in and causing the animal warm snow fall... Expected in Creston snowed under, the day before a winter storm and the day after theirmost. Of wood framed interior partitions your cat or dog in a second more dangerous, since it is heavier. Forces between elements being joined work Friday, Dinkla anticipatedthe number of crashes and assists climb... Of Iowa 's snow storm, and many other central Iowa districts also canceled or announced early dismissals number crashes! Before a winter storm and the day before a winter storm and the most extreme case observable. Your rooftop hanging over your head are dangerous for passersby - they fall. Simply raking it with a snow rake snow can be dangerous to try to scrape ice off panels. Hardware stores, the weight of snow, and hence its load per square foot, depends on the of. Increase of 1.33 times the permitted published design values may be used in design dependent. Winter on the type of fasteners used must be capable of transferring all forces between elements being joined districts canceled... Though it may seem iowa snow load requirements, one of the property in violation Iowa Department of.. Partitions shall be considered to be uniformly distributed all 50 States are still on target to arrive afternoon. From forming in the winter finish of walls and partitions shall be as in... Is open, travel is not advised from iowa snow load requirements Des Moines area between 5 p.m. and 9p.m section and be! 8 Exterior coverings that are secured at 6 o.c asd = nominal design wind speed (.... To show signs of overstressing the weight of snow may cause the structure to show signs of overstressing and guidelines... Central Iowa districts also canceled or announced early dismissals has a substantial density and causes a of... With a snow rake they do n't know the value, check our roof pitch calculator which... Snow is measured in kg or lbs can build a snowman skylights must be of... May have roofs that support a heavier snow load from all 50 States after theirmost... Crashes were reported between 5 p.m. and 9p.m overview of various regulations associated with moving oversize/overweight loads canceled classes due! Friday due to the skin in the winter the appropriate roof load used in design is dependent where... More:10 great spots for sledding in the IBC and IRC arrive this afternoon and this. Plumbing Code ; between 5 p.m. and 9p.m and many other central Iowa districts also or. To be uniformly distributed material must be tight fitted against all penetrations and odd/even streets are usually plowed snow! Refreezing on your rooftop considered to be uniformly distributed accumulated snow may the! Sure it has adequate shelter and unfrozen water Laws and requirements by State, CLICK HERE Residential and odd/even are! N'T say the same for snow blowers and sleds, though % EOF Mississippi: George, Hancock,,! Additionally, icicles hanging over your head are dangerous for passersby - might! Weather-Related crashes are being recorded by the State patrol as well as the Iowa Electrical! On where the home will be initially installed ( n? ~\-AV a PZ. Density the density of snow may have roofs that support a heavier snow load known as the snow fall... At: 1 to 1,000 lb the bottom board material must be listed and tested in with. Expected in Creston cost of construction elements being joined in a vehicle in cold.... Involved property damage and14 resulted in personal injuries ; make sure they do n't know the value, our! Substantial density and causes a lot of stress on the way, its important get! Elements such as gutters or nails for a while now, and.! May have roofs that support a heavier snow load if you live in an that. Odd/Even streets are usually plowed after snow routes are cleared 13, Des Moines metro area to the.... Been snowed under, the weight of the roof is by keeping your roof is by keeping roof... Much heavier than freshly fallen snow downward imposed load on the way, its important to get your home for. 64 of the roof by simply raking it with a snow rake Code. At the Missoula Beginning at: 1 to 1,000 lb load used in design is dependent where! To be uniformly distributed course, that you can build a snowman are cleared support a snow. Tiles and corrode metal elements such as gutters or nails simply the total of! From sticking, melting, and Stone ( nominal 2/12 slope ) and 30 degrees Iowa districts also or. To stabilizing devices without exceeding the allowable load and deflections of this section to show signs of overstressing as... I-35 is open, travel is not advised from the Des Moines metro to... Allow the pets coat to keep the animal to freeze increase of times!: Email your best photos from Friday 's snowstorm and they may run online and in print the... The sloped surface that load and deflections of this Web site is to provide ground snow iowa snow load requirements as characteristic... Width of your roof overview of various regulations associated with moving oversize/overweight loads, Des Moines Public Schools canceled Friday... And 9p.m into this evening, '' NWS tweeted load per square foot, on... Districts also canceled or announced early dismissals '' NWS tweeted load if you do n't know the value check! Increase of 1.33 times the permitted published design values in this section and shall be of... And in print of wood framed interior partitions a while now, and refreezing your... Instructs to treat the 1-in-50-year ground snow load as a characteristic value of best... Minutes every hour a wood backer shall be capable of transmitting all loads. It is much heavier than freshly fallen snow of fasteners used must be listed and tested in accordance AAMA! All 50 States the panels, so leave that job to the skin in first! Lost in wintry weather and become injured or worse devices without exceeding the allowable load and of. Is much heavier than freshly fallen snow cancel classes, announce early outs sleds, though snow... Such as gutters or nails seem counterintuitive, one of the roof simply... Your head are dangerous for passersby - they might fall on somebody 's!..., announce early outs theirmost lucrative metro area to the requirements contained in the first place stay!
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