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The TWIA governs the building codes, including wind load standards, for those counties along the Texas coast deemed "catastrophe areas." . The State has amended the snow load requirements from the IBC and from the IBC Data http://www.az.nrcs.usda.gov/snow/, Use IBC 20030 psf-450 psf with Case Study And Contact Local Building Officials for determining required Snow may be purchased This ASCE 7-10/ASCE 7-16, EN 1991-1-4, NBCC 2015, AS/NZS 1170.2, and NSCP 2015 wind load calculator has been pulled from our full Structural 3D software, it allows you to determine the wind pressure by location and apply it directly to your structural model. In that case, you would designate the building is a Simple Diaphragm Building (if that is in fact true) and then the circle will change to green and you will be able to select that option since all criteria have been met. 6-15), qh = 0.00256*Kh*Kzt*Kd*V^2*I (qz evaluated at z = h). `2r4|s?xTXsu\'}F3Dm6:!R%GMIG;iTG|e*K-GRG!L!5!HT`y ;6:6iNi4jR*jXM2V3C(>Ge?"PWN`[L6gbl@N@\Oy/erG~nu*:;C 7Lo\&meK-78^{Fh|s; }tM"*/kkl0e6fwg[ 5 mRSw@Lm~jj^`9n|lA;,R n9E:EvGOF3itG?31$+|5_M:~4)4fmP[G5 )Ao|9-iK7A5qRPjB{PgxJ-j>J,u8M:sf0Xi m@E*5V6&LlhgRl H/51FgCC5$qWb}pSJoO Ep9"[5E*%!I;r9O Ground Snow Loads for Ohio. And published by Structural Engineers Association of Oregon. Learn about participation via committee membership, attending meetings and more. And Section 300 Prescriptive Requirements Area Inland of Established Dividing Line. This category includes flat open country, grass lands, and all water surfaces in hurricane prone regions. [CDATA[ Exposure C shall apply for all cases where exposures B and D do not apply. Seward. This distribution of pressure over an area means we can calculate the equivalent wind load force that can be used for structural design calculations. Please note that both of these special provisions are included in the FBC 17 option of MecaWind. For the design of an actual structure, a competent professional should be consulted. The HUD Code stipulates, at 3280.305(c)(1) and 3280.305(c)(2), that the home shall be designed and constructed to conform to one of three wind load zones. Use these maps to quickly determine snow loads, wind speeds, and seismic data for many countries according to ASCE 7, NBC, Eurocode, and other international standards. And. How does FBC 17 compare to ASCE 7-10? Wind Speed Map Wind Hazard Zones for Louisiana. this Remainder of roof Zones 2/2E extending to ridge line shall use roof Zones 3/3E pressure coefficients. "L3g=QW;gN4v0\}i7$[6M3tM1&M968bO7(>Kg.#dcFq@7W=)v)B@-+\o9% ^tom!3't-dX[vK{t`peVFq>2>o}bp9.X:e. Zone 4T is leeward wall for torsional case. A few key changes are identified as follows and are summarized in this fact sheet: all changes t However, Risk New Risk Category IV wind speed map New wind load criteria for rooftop solar panels Revised (higher) design wind pressures on roofs of buildings with mean roof height 60 feet Loads Loads Dilapidated Buildings. Where can I find the exact standard description for the "map" component of the Geo-Zone Tool web service query? have Loads How can I switch to full-screen mode on the Geo-Zone Tool website "Snow Load, Wind Speed, and Seismic Load Maps"? Then in the MWFRS selection menu, select the FBC Sec 1609.6 Alternative method. High winds put great forces on a building, including shear loads (causing racking), opposing lateral loads (push and pull) and uplift on the roof. endobj Support & Learning {lxV0RU@-(Z[|` Loads. SkyCiv offers a full design report to show the calculations of the wind and snow pressures, so you can see exactly how the software calculated the wind pressures for ASCE 7-10/ASCE 7-16, EN 1991-1-4, NBCC 2015, AS/NZS 1170.2, IS 875-3, NSCP 2015, CTE DB SE-AE, and CFE and the snow load for ASCE 7-10/ASCE 7-16, EN 1991-1-3 (select countries), NBCC 2015, and AS/NZS 1170.3. on a Snow TWIA Building Code for Windstorm Construction. The publication is $20 In addition to designing a structure to withstand earthquake loads, it is also important to consider the maintenance and upkeep of the structure. 2) Garage or Rolling Doors - There are special requirements for Garage or Rolling doors that are handled in Para 1609.7. at higher elevations, Use IBC 200350 psf-100 psf with Case Study Areas Contact Local Building Officials for determining required Snow FBC 17 actually allows you to use ASCE 7-10. State of Alaska has given Authority to Local Building Officials is $80.95 and may be purchased 441022, Moscow, ID 83844-1022. http://www.uidaho.edu/engr/cedept/publications.htm, In addition, you can estimate/verify your snow loads Load Recommendations for the Case Study areas for is currently out of print. ASCE gives you the best professional and technical resources. Yes, I consent to receiving emails from this website. Act recommended 8:30 AM - 12:30 PM CEST, Eurocode 3 | Steel Structures According to DIN EN 1993-1-1, Online Training Tall structures, such as skyscrapers, are more susceptible to seismic loads due to their height. Homes can and do withstand strong hurricanes, if they are designed and reinforced for the wind hazard risk of the area. An easy way to find the current wind design speed and other hazard information for your home address or city is a great new online Hazards by Location search tool developed by the Applied Technology Council (ATC). Snow Load by ZIP Code, Finding Location in Germany on Google Maps and Obtaining Corresponding Snow Load, Finding Snow Load Zone and Snow Load by Zip Code (ZIP), Detailed Search of Location for Determination of Characteristic Snow Load. The load cases are applied to each building corner in turn as the reference corner. VersaTube Self-Drilling Screw Instructions, 12 x 20 x 7 - Classic Carport - Roof Only. %PDF-1.7 Give back to the civil engineering community: volunteer, mentor, donate and more. 06/08/2021 ), 2. //]]>, Home The Structural Engineers Association of New Mexico are presently Per Sect. This easy to use calculator will display the wind speed and ground snow load by location via a wind speed and snow load map as prescribed by the above building codes. at higher elevations No located on a site for which channeling effects or buffeting are a concern, 44. http://www.buildingtechbooks.com/, In addition, you can estimate/verify your snow loads by Using SNOTEL We are very open and really appreciate feedback and suggestions to improve. Zone 3T is leeward roof for torsional case. both States. Contact Local Building Officials for determining required Snow a WYOMING CLIMATE ATLAS by Jan Curtis and Kate Grimes, that For flat roofs (roof angle = 0 degrees), either Gable or Monoslope may be used. regions, Use IBC 200310 psf-20 psf with Case Study Areas in "Snow Loads for Structural Design in Montana", Design And Use IBC 20030 psf-15 psf with Case Study Areas And Hampshire. from MSU Civil Engineering at 406-994-2111. Currently the above wind force software is based on the US, Australia, Canada, select European countries, India, Philippines, and Spain to help engineers determine their design wind and snow pressures for buildings. !s(wA{Q44}Rr(g' @kNP}POyO7wf The IRC's mandatory load requirements are derived from ASCE 7, the most respected and referenced standard for minimum design loads of buildings, developed by the American Society of Civil Engineers. Contact Local Building Officials for determining required Snow for Eurocode 5 | Timber Structures According to DIN EN 1995-1-1, Online Training The appropriate wind zone used in design is dependent on where the home will be initially installed. Contact Local Building Officials for determining required Snow Zone 2 is windward roof for interior zone. Snow Load Analysis for Washington, & The LSU AgCenter and the LSU College of Agriculture, 101 Efferson Hall Answer The basis for calculating a snow load is a snow load zone where the structure is located. Exposure Categories are defined as follows: Values are nominal design 3-second gust wind speeds in mph at 33ft above ground for Exposure C category. speed is > 90 mph. FBC 17 handles the case of ASD design a little different, it modifies the wind speed used in the calculations to an ASD velocity using Equation 16-33. by Using SNOTEL Data to Estimate Snow Load Amounts: http://www.id.nrcs.usda.gov/snow/data/geninfo/snowload.html Wind tunnel tests in accordance with ASCE 49 and Sections 31.4 and 31.5 of ASCE 7. in Members can ask and answer questions. Contact Local Building Officials for determining required Snow Where are these snow load zones defined? In addition, you can estimate/verify your snow loads by Using SNOTEL Timber Lattice Bridge for Cyclo-Pedestrian use over Reguern Irrigation Channel in Orihuela, Spain, Mountain Station/Garaging Hall Zinsbergbahn, Brixen im Thale, Austria, Harzdrenalin Membrane Roof at Rappbode Dam in Harz Mountains, Germany, Study of Device for Hanging and Mounting AOD Retort, Spiral Staircase in KF Aerospace Centre for Excellence, Canada, Production and Office Building in Dunningen, Germany, Production and Trading Company in Pians, Austria, sixpack Lift Station in Filzmoos, Austria, 2001 - 2023 by Dlubal Software, Inc. | All Rights Reserved. Upgrade and view the full reports or use this link to see our sample detailed wind load. distance may be reduced to 1500 ft. Code requirements change periodically as building codes are updated. Areas Volume 31 (6). How Wind Affects Buildings Areas & Texas Administrative Code. And for determining required Snow Loads for their municipalities. _FOXcS63Wp*djaN[P4BGy!e_=~(J24*xRM\no Broken windows, doors and garage doors can result in internal loads that amplify the forces and increase the risk of structural damage. It is a fairly simple process to use FBC 17, but please note that this option is only available in the Pro version of the software. Using Method 2: Analytical Procedure (Section 6.5) for Low-Rise Buildings. Colorado Data http://www.co.nrcs.usda.gov/snow/, Use IBC 20030 psf-10 psf with Case Study Areas Vk[_R&"%)52(C=!m2:MP#z-uvJgNEJSW>MGsap#X573JYK'R?&_1G=LrF =x&|sTh)- Design And Open terrain with scattered obstructions having heights generally < 30 ft. The closer to the Gulf, the higher the wind risk. Utah Data http://www.ut.nrcs.usda.gov/snow/. The map will also show the ground elevation above sea level at the location point. And Contact us via phone, email, chat, or forum, or send us your question directly through our online form. It is worth mentioning that this comparision is just one example, and we cant draw too many general conclusions based upon just one comparision. & in Zones 2/2E: MWFRS Wind Load for Transverse, Torsional Case, MWFRS Wind Load for Long., Torsional Case. Journal of Applied Meteorology, 08/11/2021 And Building codes are adopted to provide a reasonable level of safety, and protection of public health, general welfare and property. Starting September 1, 2020, Windstorm Certificate of Compliance applications (WPI-1) must be certified in accordance with either the 2018 International Residential Code (IRC) or the 2018 International Building Code (IBC). in Zones 2/2E: For Long. Snow load and Wind Speed loads have their own category aside from dead and live loads. completed Surface Roughness Categories for the purpose of assigning Exposure Category are defined as follows: Standards are provided for minimum design loads (live, dead, snow, wind, rain, flood, ice, and earthquake as well as the required load combinations). The best way to determine the snow load zone as well as the characteristic value of the snow load is to use our online service,Geo-Zone Tool for Load Determination. http://www.michigan.gov/documents/cis_bcc_snow_40405_7.pdf Load Recommendations for the Case Study areas for Zone 4 is leeward wall for interior zone. Building or other structure <= 75 ft (22.86 m). Rules for snow loads can be found at: http://www.rules.utah.gov/publicat/code/r156/r156-56.htm, In addition, you can estimate/verify your snow loads by Using SNOTEL That will add wind speed contour lines on the map and provide the exact wind design speed for your location. Accurate wind load calculations will that a safe, durable structure is assembled. Enter the most up-to-date wind and snow load requirements which you can get by calling your local building code authority. Use IBC 200320 psf-25 psf with Case Study Areas Provides a convenient way to look up digital data for the Tsunami Design Zone. In order for a structure to be sound and secure, the foundation, roof, and walls must be strong and wind resistant. at higher elevations Baton Rouge, LA 70803 Surface Roughness "D": This is required in a lot of design or building codes and can often be the governing load case in areas with high winds. window.__mirage2 = {petok:"jodw7XoAaPeJZJL1N8ZmJUMAtZOR.Ji7qEaCJ9M3a7A-1800-0"}; Minimum Design Loads for Buildings and Other Structures (ASCE-7); or 4. 10 wood-screw-based anchor with 2-inch embedment length. And ASCE Continuing Education offers a wide variety of top-quality programs taught by experts in the field. Choose the "Proceed with estimated values" option located below "Contact Us". Contact Local Building Officials for determining required Snow A partially enclosed building complies with both of the following conditions: the total area of openings in a wall that receives positive external pressure exceeds the sum of the areas of the openings in the balance of the building envelope (walls and roof) by more than 10%; and. & Delaney, M. 1992. You can edit the input to re apply, and as you change your model the wind loads will automatically adjust, so you don't have to delete and reapply! Enter information below to subscribe to our newsletters. For example, in the image below the circle is red because the building is NOT a simple diaphragm building and that is a requirement of the FBC alternative method. 2002 V"p/`f6o80z8{Q"$'(JnCAQN,Dh{+JEjpP . }@ 9VI hkO c`GDmt}:G>9d Ll4QEwmc'# u`T2{ZGe3 C\BAa7-{C1qff+9 ?c)X2@M K i*pyH5Qd=2F@_QPIXo=}5alhi Zf]@j0b,pA +JtV!r! Wind Loading Analysis - Main Wind-Force Resisting System, per ASCE 7-05 Code [wind loads on structures 2005] for Enclosed or Partially Enclosed Buildings Arizona, Snow loads shall be determined Snow loads are particularly important for structures with sloped roofs, as the snow load can vary significantly depending on the slope of the roof. Determine the seismic base shear for your structure using the Equivalent Static Force method. Exposure D shall apply where the ground surface roughness, as defined by Surface Roughness D, prevails in the upwind diection for a distance >= 5,000 ft. or 20 times the building height, whichever is greater. local government 9:00 AM - 1:00 PM EDT, Online Training Supplements and errata are an essential component to the Standard provisions and All previous editions of 7 are available in the ASCE Bookstore. 07/29/2021 Dive into your technical area with questions and issues with your community. 06/17/2021 Loads And endobj The IRC can be accessed online at www.iccsafe.org. And Ordering: In Step 1 (Engineering Zip Code) choose "Enter Wind/Snow Information Manually". And Loads, Use IBC 200315 psf-50 psf with Case Study Data to Estimate Snow Load Amounts: http://www.id.nrcs.usda.gov/snow/data/geninfo/snowload.html You can then design your structure with engineering and price estimations. In areas with heavy snowfall, the snow load on a structure can be quite significant and must be taken into account during the design process. http://www.commerce.state.wi.us/SB/SB-CommercialBuildingsCodeEnrolledReplacV1C.pdf, Use IBC 200320 psf-30 psf with Case Study Areas Loads, Use IBC 200310 psf-25 psf with Case Study Areas Ordering: In Step 1 (Engineering Zip Code) choose "Enter Wind/Snow Information Manually". An integral part of building codes in the United States, ASCE/SEI 7, Minimum Design Loads and Associated Criteria for Buildings and Other Structures describes the means for determining design loads including dead, live, soil, flood, tsunami, snow, rain, atmospheric ice, seismic, and wind loads and their combinations for general structural design. Structural engineers, architects, and building code officials will find the structural load requirements essential to their practice. The text of Section 6.2.2 of ASTM E1996 shall be substituted as follows: 6.2.2 Unless otherwise specified, select the wind zone based on the basic design, Garage door glazed opening protection for windborne debris shall meet the requirements of an, 1402.3 Relocated or Moved Buildings, Wind Loads, one- and two-family dwellings and Group U occupancies where, - and two-family dwellings and Group U occupancies where, Section 1609 Structural Design, Wind Loads, Buildings, structures and parts thereof shall be designed to withstand the minimum, Section 304 Structural Design and Testing Criteria, Wind Loads, Standard for the Design and Construction of Storm Shelters of Illinois, No. You can zoom in to any part of the map. Idaho Data http://www.id.nrcs.usda.gov/snow/. Data to Estimate Snow Load Amounts: http://www.id.nrcs.usda.gov/snow/data/geninfo/snowload.html Contact Local Building Officials for determining required Snow Areas at higher elevations. Choose the "Proceed with estimated values" option located below "Contact Us". Go to Main Menu These are important for any engineer, so they can follow the software's assumptions, calculations and design code references. snow Use the Ground Snow Load for New Hampshire developed by the Corps be found at: http://www.buildingcodes.admin.state.mn.us/printouts/snowload.pdf. | And The IRC can be accessed online at www.iccsafe.org. [!:irz]fI|,9g79z And of Idaho, P.O. Designs using TIA-222 for antenna-supporting structures and antennas, provided that the horizontal extent of Topographic Category 2 escarpments in Section 2.6.6.2 of TIA-222 shall be 16 times the height of the escarpment. Thereforce, we recommend just using ASCE 7-10 since FBC 17 offers no advantage. Clopay's WindCode Door Calculator will help you find that door. http://www.state.vt.us/labind/Fire/snowloads.htm Easily locate the building department in your area by searching online with your zip code + "building department phone number". Construction must be certified to be eligible for windstorm insurance coverage through TWIA. Explore the many ways to grow your knowledge, advance, and stay current with your professional career while earning credits. Loads in "Snow Loads for Structural Design in Montana", These wind load requirements are not just for residences and buildings, they also apply to towers, signs, pavilions and covered walkways. Retrieve yours below: Don't have a Design ID? To answer this we did a comparison of a simple gabled building using FBC 17 vs ASCE 7-10. And Loads. of Engineers, Cold Regions Research and Loads, Use IBC 20030 psf-20 psf with Case Study The best way to determine the snow load zone as well as the characteristic value of the snow load is to use our online service, Geo-Zone Tool for Load Determination. Zone 3 is leeward roof for interior zone. If when selecting the MWFRS or C&C methods you are unable to select FBC and the circle to the right is RED, that means that you dont meet all of the criteria to select the FBC Alternative method. 8:30 AM - 12:30 PM CEST, Quickly Determine Loads with the GEO-ZONE TOOL: Interactive Load Zone Maps with Google Technology. Design Net External Wind Pressures (Sect. 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. Contact Local Building Officials for snow loads for mountainous Disclaimer: This calculator is not intended to be used for the design of actual structures, but only for schematic (preliminary) understanding of structural design principals. Areas at higher elevations, Use IBC 200330 psf-60 psf with Case Study postage), payable to Department of Civil Engineering, University Sheikh-Taheri, @Vexql+|Tllz}_uw2ygKn^ KB 001633 | Snow Load on Elevated Solar Thermal and Photovoltaic Systems on Roofs up to Dlubal RFEM 5 & RSTAB 8 - Loads: Generate Snow Loads, Dlubal Geo-Zone Tool: Interactive Snow, Wind and Seismic Zone Maps, Invitation to Online Training "RFEM 6 | Eurocode 5 | Timber Structures", Verification Example 1022 | Slab Designed According to DIN EN 1992-1-1 with NA, Verification Example 218 | Modeling a Foundation in Clay, Masonry Building on Reinforced Concrete Foundations, Canopy and Wind Loads from 0 to 90 with RWIND 2, Snow Load on Elevated Solar Thermal and Photovoltaic Systems on Roofs up to 10 Inclination, RF-LOAD-HISTORY Add-on Module for RFEM | Consideration of Plastic Deformations from Previous Load Conditions, RF-/STAGES Add-on Module for RFEM/RSTAB | Consideration of Construction Stages, RF-LINK Add-on Module for RFEM | Interface for Importing ACIS, IGES, STEP Files, RF-/STEEL AISC Add-on Module for RFEM/RSTAB | Design of Steel Members According to ANSI/AISC 360-16, RFEM/RSTAB RF-/STEEL SANS Add-on Module | Design of Steel Members According to SANS 10162-1: 2011, RF-/STEEL NBR Add-on Module for RFEM/RSTAB | Design of Steel Members According to ABNT NBR 8800: 2008, RF-/FE-LTB Add-on Module for RFEM/RSTAB | Lateral-Torsional Buckling Analysis According to Second-Order Analysis (FEM), RF-/CAVITY Add-on Module for RFEM/RSTAB | Ultimate Limit State Design of Welded Hollow Section Connections According to EC 3. hope to Always consult with your local building department to ensure your structure will meet the wind / snow load requirements for your area. Seismic loads are caused by the ground motion during an earthquake and can vary greatly depending on the location and magnitude of the earthquake. 9:00 AM - 1:00 PM CEST, Online Training Snow loads and wind speed load requirements are determined by your ZIP code and also built into the pricing and design software utilized by your metal building broker. We have added the Florida Building Code 2017 Wind Loads to our software, MecaWind (Pro feature), and this gave us an opportunity to get familar with the Florida Building Code 2017. THE MASSACHUSETTS STATE BUILDING CODE 272 780 CMR - Sixth Edition corrected - 9/19/97 (Effective 2/28/97) 1611.3 Reference wind velocities: The reference The Florida Building Code 2020 was adopted in 2021. Start Designing Now. For Trans. 2:00 PM - 2:45 PM CEST, Online Training This can occur in areas that have extreme variations in elevation. by Using SNOTEL Data to Estimate Snow Load Amounts: Wyoming Data http://www.wy.nrcs.usda.gov/snow/, https://www.fs.usda.gov/t-d/snow_load/states.htm, Snow Load Data for For reference, here is a link to view FBC 17 online, and you can also purchase a hard copy at www.floridabuilding.org . There was a lot a panic a couple of years ago that FBC 2017 referenced ASCE 7-16. How does a Live Load differ from a Snow Load? Baton Rouge, LA 70803, Scroll through the dropdown bar on the left side to the. Use IBC 200340 psf-60 psf with Case Study Areas Loads Urban and suburban areas, wooded areas or other terrain with numerous closely spaced obstructions having the size of single family dwellings or larger. by the building official. 8:30 AM - 12:30 PM CEST, Online Training Areas at higher elevations Use IBC 20030 psf-150 psf with Case Study Areas This table has values for Cnet, and then the Cnet value is used to calculate the wind pressure using Equation 16-35. Data to Estimate Snow Load Amounts: http://www.id.nrcs.usda.gov/snow/data/geninfo/snowload.html Contact Local Building Officials for determining required Snow Support Yes No A publication can be purchased called: stage. 18%09= ^KR?|8\[2Nhn_Fo(ZS??bkN%szDz8-h`R!A[Djv Your guide to SkyCiv software - tutorials, how-to guides and technical articles. A house in an unobstructed open clearing or within 1,500 feet of open water is susceptible to higher wind forces from unobstructed winds. Washington Data http://www.wa.nrcs.usda.gov/snow/, Use IBC 200320 psf-30 psf with Case Study And The first step of the software is to pull the wind speed or ground snow load out of the design code based on the user input location or zip code. Use IBC 200315 psf-20 psf with Case Study Areas 1) Rigid Tile - There are special guidelines for calculating the wind loads acting on Rigid Tile in Para 1609.5.3. Data to Estimate Snow Load Amounts: http://www.id.nrcs.usda.gov/snow/data/geninfo/snowload.html http://www.wrds.uwyo.edu/wrds/wsc/climateatlas/snow.html, In addition, you can estimate/verify your snow loads by Using SNOTEL In areas with a high risk of earthquakes, the seismic loads on a structure can be quite significant and must be taken into account during the design process. Wind loads for torsional cases are 25% of respective transverse or longitudinal zone load values. 1. As a constantly evolving tech company, we're committed to innovating and challenging existing workflows to save engineers time in their work processes and designs. This isnt true, the FBC 2017 still references ASCE 7-10. There are some other special considerations when following FBC 17. 6-10): If h < 15 then: Kh = 2.01*(15/zg)^(2/a) (Table 6-3, Case 1b), Velocity Pressure: qz = 0.00256*Kz*Kzt*Kd*V^2*I (Sect. External Pressure Coeff's., GCpf (Fig. On the surface the table for these structures appear to be different from that in ASCE 7; however, after some investigation we see that it yields identical pressures to ASCE 7-10. And The minimum design roof snow load . Since a ZIP code (or postal code) is not an exact site location, the wind speed map needs extra information to recognize this is a zip code. Contact Local Building Officials for determining required Snow Montana State University, August 1989. While wind load calculations can be difficult to figure out because the wind is unpredictable, some standard calculations can give you a good idea of what a building can withstand. trying to unify the snow load data with some of the methodology It includes minimum design loads, assignment of risk categories, as well as permitted design methodologies. Find out about upcoming and past events as well as educational and virtual sessions. Homes designed and constructed to a higher Wind Zone can be installed in a lower Wind . Existing Building Code 2021 of Illinois > 14 Relocated or Moved Buildings > 1402 Requirements > 1402.3 Wind Loads - and two-family dwellings and Group U occupancies where wind loads Existing Building Code 2018 of Illinois > 14 Relocated or Moved Buildings > 1402 Requirements > 1402.3 Wind Loads Comparing the results we see that some values are higher and others are lower. These features can help to reduce the impact of snow loads on a structure and increase its stability. It provides for the removal of the following: Debris.