Most of the funded research activity has been directed to hurricane amelioration in North America, more specifically oriented to experience along the east coast of the United States and to the Caribbean regions. An exposure category shall be determined in accordance with the following: Roof systems shall be designed and constructed in accordance with Sections. Please remove, all DUPLICATE / REDUNDANT files which have been uploaded in to multiple, Project dox will automatically version the replacement file. Shingles classified using ASTM D 3161 are acceptable for use in wind zones less than 110 mph (49 m/s). www.publicworks.houstontx.gov/traffic/programs.html. Risk Category II: V. ult. Check the wind forecast for Houston Hobby . design wind speeds and requirements for when protection of openings is required. The temperature low is +22C and the high is +28C. The deflection criterion for interior partitions is based on the horizontal load defined in, The above deflections do not ensure against ponding. STRUCTURAL REQUIREMENTS Basic Wind Speed: IRC - 110 mph (3-second gust) IBC - Risk Category I: V ult 130 mph . Fasteners shall be installed at opposing ends of the. RES W/ATT. United States of America. entering the physical address of the All plans must reference and be compliant with the City of League City adopted codes, including the ultimate design wind speed in addition to TDI requirements. Unit Settings . Vertical ties shall consist of continuous or spliced reinforcing, continuous or spliced members, 1605.2 Load Combinations Using Strength Design or Load and Resistance Factor Design, 1605.3 Load Combinations Using Allowable Stress Design, 1605.3.2 Alternative Basic Load Combinations, For SI: 1 inch = 25.4 mm, 1 square inch = 645.16 mm, 1607.7.2 Fire Truck and Emergency Vehicles, 1607.8 Loads on Handrails, Guards, Grab Bars, Seats and Vehicle Barriers, 1607.8.2 Grab Bars, Shower Seats and Dressing Room Bench Seats, 1607.9.3 Elements Supporting Hoists for Faade Access Equipment, 1607.9.4 Lifeline Anchorages for Faade Access Equipment, 1607.10.1 Basic Uniform Live Load Reduction, 1607.10.2 Alternative Uniform Live Load Reduction, 1607.12.2.1 Ordinary Roofs, Awnings and Canopies, 1607.12.3.1 Vegetative and Landscaped Roofs, 1607.12.5.2 Photovoltaic Panels or Modules, 1607.12.5.3 Photovoltaic Panels or Modules Installed as an Independent Structure, 1607.12.5.4 Ballasted Photovoltaic Panel Systems. The Current Wind map shows the current wind speed and direction . 0 All other structures - 2015 IBC, Chapter 16, Section 1609 wind . Below is the NOAA Tornado activity map as shown previously. to them in those other volumes, as applicable to the construction and proposed scope of work hereunder, The occupiable space is within a one- or two- family, director of Houston Public Works or the duly authorized representative designated by the director to act as the chief construction code enforcement official of the, This boundary also includes the boundary between. Rain load on the undeflected roof, in psf (kN/m, The mapped spectral accelerations for short periods as determined in, The mapped spectral accelerations for a 1-second period as determined in, The maximum considered earthquake spectral response accelerations for short period as determined in, The maximum considered earthquake spectral response accelerations for 1-second period as determined in, The span of the horizontal element in the direction of the tie, between bearing, A coefficient with a value of 1,500 pounds per foot (2.25 kN/m) for, A coefficient with a value of 16,000 pounds (7200 kN) for structures with. Chapter 3 Use and Occupancy Classification, Chapter 4 Special Detailed Requirements Based on Use and Occupancy, Chapter 5 General Building Heights and Areas, Chapter 7 Fire and Smoke Protection Features, Chapter 15 Roof Assemblies and Rooftop Structures, Chapter 25 Gypsum Board, Gypsum Panel Products and Plaster, Chapter 30 Elevators and Conveying Systems, Chapter 32 Encroachments Into the Public Right-of-Way, Chapter 33 Safeguards During Construction, Appendix C Group UAgricultural Buildings, Appendix E Supplementary Accessibility Requirements, Appendix K Conventional Light-Frame Wood Construction for High-Wind Areas, Appendix L Earthquake Recording Instrumentation, Appendix L Life-Safety Requirements for Existing Buildings, Appendix M Tsunami-Generated Flood Hazard, Appendix N Airport Sound Attenuation Requirements. 0 %%EOF . 2.2 Areas located east of State Highway 146 and inside the city limits of the cities of Seabrook, La Porte, Shoreacres, Pasadena, and Morgan's Point (all in Harris County). not allow a 6-inch drop in the first 10 feet. Shown below is a wind design map from the IRC [2012]. 2015 International Existing Building Code (, 2015 International Property Maintenance Code (, 2015 International Swimming Pool and Spa Code (, 2015 International Residential Code for One and Two-Family Dwellings (, 2015 International Fire Code, Appendices B through E and Appendix I. Section 17F.040.105 Design Criteria. Homes built for Wind Zone 2 should be able to withstand winds up to 100 mph. Words used in the present tense include the future; words in the masculine gender include the feminine and neuter; the singular number includes the plural and the plural, the singular. Following a particularly bad tornado in one state in 2012, the governor of that state was actually quoted as saying that the state was not interested in improving the building codes. The. Depth of water on the undeflected roof up to the inlet of secondary drainage system when the primary drainage system is blocked (i.e., the static head), in inches (mm). See Section 12.12.1 of ASCE 7 for drift limits applicable to earthquake loading. 95. The city of Houston is the no. Wind Speed Requirements A. property where the building will be constructed into the ASCE 7 Windspeed Website: Although regional code development has been effective and responsive to the regulatory needs of the local jurisdictions, by the early 1990s it became obvious that the country needed a single coordinated set of national model building codes. Risk Category III & IV: V. ult. Per the Houston-amended 2012 IRC (International Residential Code), structures shall be designed for a nominal wind load of 110 mph basic wind. Values shall be determined in accordance with Section 11.4.7 of ASCE 7. A reduction shall not be permitted where the, A reduction shall not be permitted in passenger vehicle parking garages except that the. hbbd```b``"fHr,A$?d`rXLMX The zipcode with the highest number of damaging hail reports near Houston in 2021 is 77018, with 3 reports. In the second coastal tier, consisting of the balance of Harris County and Wharton, Bee, Goliad, Brooks, Live Oak, Fort Bend, Victoria, Jackson, Orange, Hidalgo, Wharton, Liberty, Hardin and Jim Wells counties, the standard remains the same as that for Inland II areas, or a three-second gust traveling at 110 miles per hour. Main windforce-resisting frames and systems, Flat < Slope < 6:12 (27) See ASCE 7 Figure 30.4-2B, Overhang: Flat < Slope < 6:12 (27) See ASCE 7 Figure 30.4-2A, 6:12 (27) < Slope < 12:12 (45) See ASCE 7 Figure 30.4-2C, Flat < Slope < 7:12 (30) See ASCE 7 Figure 30.4-5B, Overhang for Slope Flat < Slope < 6:12 (27) See ASCE 7 Figure 30.4-2B, 6:12 (27) < Slope < 12:12 (45) Figure 30.4-2C, Overhang for 6:12 (27) < Slope < 12:12 (45) See ASCE 7 Figure 30.4-2C, Monosloped configurations at ridges, eaves and rakes (, 6:12 (27) < 12:12 (45) See ASCE 7 Figure 30.4-2C, Overhang for 6:12 (27) < Slope < 12:12 (45), Well-graded, clean gravels; gravel-sand mixes, Poorly graded clean gravels; gravel-sand mixes, Silty gravels, poorly graded gravel-sand mixes, Clayey gravels, poorly graded gravel-and-clay mixes, Well-graded, clean sands; gravelly sand mixes, Poorly graded clean sands; sand-gravel mixes, Silty sands, poorly graded sand-silt mixes, Clayey sands, poorly graded sand-clay mixes, Inorganic clays of low to medium plasticity, Organic silts and silt clays, low plasticity. B. Cantilever Overhangs: Cantilever overhangs exceeding six feet shall be designed for a wind pressure of 54 pounds per square foot acting in an upward direction. The counties covered are Aransas, Brazoria, Calhoun, Cameron, Chambers, Galveston, Harris (east of Highway 146), Jefferson, Kenedy, Kleberg, Matagorda, Nueces, Refugio, San Patricio and Willacy. Where terms are not defined through the methods authorized by this section, such terms shall have ordinarily accepted meanings such as the context implies. Widespread significant wind damage can occur with higher wind speeds. hb```g``Z`9 2 EY8nG AFe;00t40X8g iq 20*L``3\`xV6Km+b3}pE_6x+-Q54h-A&@ nO 6.2.2 Unless otherwise specified, select the wind zone based on the strength design wind speed. Puerto Rico and the U.S. Virgin Islands enforce one or more of the I-Codes. Leaves rustle and small twigs . For more information, contact: [email protected]. Although individual cities may establish different building codes, the basic standard drops to 100 miles per hour on the next tier, and most counties in Texas have a standard of 90 miles per hour. "NA+`[BA$ Y?QDzyiNg` 3p New Regulations for the City of Houston Effective September 1. Building Department Katy City Hall 901 Avenue C Katy Texas 77493 7:00 AM - 5:00 PM Phone: 281-391-4830 Fax: 281-391-4834. Besides required fasteners per Section 1507.2.6 and Section 1507.7.3.1, asphalt and This certificate must be obtained from the Texas Department of Insurance, and is applicable to risks located in the 1st tier counties, in addition to the following cities in Harris County. For dry floodproofed nonresidential buildings, The elevation of the bottom of the lowest horizontal structural member as required by the. and Other Structures is used to determine the wind loads on buildings. Box 12030, Austin, TX 78711 | 512-676-6000 | 800-578-4677, State Auditor's Office Hotline: 800-TX-AUDIT. EF4 Damage Single Family ResidenceInterior walls and floor above basement missing (Wikipedia), EF5 Damage Example HouseNot much more than the foundation left. El Dorado County's minimum wind speed shall be determined from CBC Figure 1609.3 or CRC Figure R301.2(5) except in the Special Wind Region (eastern area of the county). Wind barely moves tree leaves. There must be at least 75% or greater evidence of support from the residents in the directly affected area before a segment can be privately funded. For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 pound = 4.448 N, 1 mile per hour = 0.447 m/s. 467 Swan Avenue Hohenwald, TN 38462 Toll Free Phone: 1-800-284-7437 Texas Local Phone: 1-817-502-9809 Mon - Fri 8:00AM - 5:00PM CST Subject to the limitations of Section 1609.1.1.1, residential structures using the provisions of AISI S230. Within 1 mile (1.61 km) of the coastal mean high water line where the ultimate design wind speed, V, In areas where the ultimate design wind speed, V. Houston, TX 72 F Cloudy; St . The MWFRS and the components and cladding of every building or other structure shall be designed for the pressures calculated using Equation 16-35. The following is a list of the communities located in Harris County that are part of the designated catastrophe area. The hill, ridge or escarpment is 60 feet (18 288 mm) or higher if located in Exposure B or 30 feet (9144 mm) or higher if located in Exposure C; The maximum average slope of the hill exceeds 10 percent; and. If a structure is located in a community or area not shown below, then refer to the county map to determine under which zone the structure falls. * Inside the city limits of these cities and East of Highway 146. Asphalt shingles shall be installed in accordance with Section R905.2.6. Predictions are available in time steps of 3 hours for up to 10 days into the future. High winds can blow objects around and pose a significant threat to your safety. This takes into account the location, basic wind design and speed, the surrounding terrain . The areas located east of the boundary line specified include, but are not limited to, the areas inside the city limits of the cities of Brownsville, Corpus Christi, Portland, Rockport, Aransas Pass, Port Lavaca, Matagorda, Brazoria, Lake Jackson, Angleton, Galveston, Anahuac, Nederland, and Port Arthur. Wood shutters or other wooden protection panels may be an acceptable substitute for an impact-resistant material. So, in effect, there is no tornado code protection for dwellings and their occupants in the IRC. Beyond the coastline, the remainders of these counties lie in the Inland II area, where openings must be capable of withstanding three-second wind gusts of 110 miles per hour. Gust effect factor for rigid structures in accordance with ASCE 7 Section 26.9.1. This is equivalent to 142 mph ultimate wind speed, which is more stringent than the 139 mph ultimate wind speed criteria for, Risk Category 2 buildings in the 2012 IBC. There exists a significant risk of collapse, detachment or dislodgement of any portion, member, appurtenance or ornamentation of the building or structure under service loads. *** Do NOT add extensions on the original name. Areas with good exposure to prevailing winds and annual average wind speeds around 4 meters per second and greater at a 30-m height are generally considered to have a suitable wind resource for small wind projects. Contact. %PDF-1.6 % Allowable stress design wind speed, miles per hour (mph) (km/hr) . The program is applicant driven. The Houston District plans, designs, builds, operates and maintains the state transportation system in the following counties: Brazoria, Fort Bend, Galveston, Harris, Montgomery and Waller. Help If you need more information about our wind statistics for Houston, have a look at our help section. %%EOF The horizontal distributed load need only be applied to the partition framing. Specifications In Aransas and Galveston counties, openings with a seaward exposure must be capable of withstanding a three-second wind gust with a wind speed of 130 miles per hour. Continuous load paths shall be provided for transmitting these forces to the foundation. This is equivalent to 142 mph ultimate wind speed, which is more stringent than the 139 mph ultimate wind speed criteria for Risk Category 2 buildings in the 2012 IBC. Aerodynamic uplift moment, feet-pounds (N-mm) acting to raise the tail of the tile. See, The wind load is permitted to be taken as 0.42 times the "component and cladding", For aluminum structural members or aluminum, Power-generating stations, water treatment, and Are sufficient to pose a threat to the public. 428 0 obj <> endobj Areas inland of the Intracoastal Waterway and east of the specified boundary line and certain areas in Harris County: To be eligible for windstorm and hail insurance coverage through the Texas Windstorm Insurance Association, structures located in designated catastrophe areas specified in Section 2.1 and Section 2.2 and constructed, repaired, or to which additions are made on and after June 1, 2008 shall comply with the 2006 International Residential Code with Texas Revisions or the 2006 International Building Code with Texas Revisions, for a 120 MPH, 3-second gust wind speed. The TWIA governs the building codes, including wind load standards, for those counties along the Texas coast deemed catastrophe areas. The Texas Insurance Commissioner may designate any part of the state as a potential catastrophe area if the area frequently suffers severe damage from wind or hail, making private insurance premiums unreasonable to a significant number of property owners. Equation 12.8-2 of ASCE 7 is used to determine the seismic response coefficient. It will NOT version. The Texas Department of Insurance produces maps for general informational use only. The basic design wind speed, V, for use in the design of Risk Category I buildings and structures shall be obtained from Figures 1609.3 (4), 1609.3 (11) and 1609.3 (12). Mapped spectral response acceleration parameters. "Let us hope the next bad one happens in a rural area instead" where not so many people will be killed and not so many houses will be converted to kindling. Are sufficient to pose a threat to the public if released. In 3280.305 (c) (1) (ii) (B), there is a comprehensive table listing all the requirements. New Risk Category IV Wind Speed Map - 7th Edition (2020) FBCB (ASCE 7-16 Figure 26.5-1D) While the wind speed maps in ASCE 7-16 have been revised significantly for the nonhurricane-prone region, for the State of Florida, the only significant change to the wind speed maps is the introduction of a new wind speed map for Risk Category IV . and . (ASCE 7 Figure 30.10-1) C. Roofing: 1. Wind tunnel tests in accordance with ASCE 49 and Sections 31.4 and 31.5 of ASCE 7. A request must come from a resident who lives on the roadway segment they wish to have studied. Additional depth of water on the undeflected roof above the inlet of secondary drainage system at its design flow (i.e., the hydraulic head), in inches (mm). - Manage notification subscriptions, save form progress and more. or toward the main vehicle entry doorway. 1: Light Air: 1 to 3 mph: Direction of wind shown by smoke drift, not by wind vanes. PlanSwift breaks down the construction code requirements for hurricane zones. INLAND I- 2006 IBC/IRC with the Texas Revisions, 120 mph 3-second gust design wind speed La Porte Morgan's Point Pasadena Seabrook Shoreacres. The City of Dothan has adopted the following building codes as of April 21, 2017: The National Fire Protection Association (NFPA) Standards - For additional information, please refer to Chapter 38 of the City of Dothan Municipal Code. Table R301.2 (1) is modified as follows to identify the design criteria associated with our geographical area: TABLE R301.2 (1) Ground Snow Load*. Segments that are determined eligible but do not receive City funding can privately fund the construction, but those projects must meet a higher threshold for evidence of support. B. In the Houston metro area, seven utility-scale wind energy generation establishments employ 766 workers with an average weekly wage of $2,694the second highest weekly wage in the nation. How to Label a Diesel Storage Tank to Comply With OSHA, Texas Department of Insurance: Engineering Services and Windstorm Inspections Section, Texas Department of Insurance: Designated Catastrophe Areas. Applicable internal pressure coefficient. In the absence of definite information, values used shall be subject to the approval of the, Follow spot, projections and control rooms, File and computer rooms shall be designed for heavier, Stadiums and arenas with fixed seats (fastened to floor), All roof surfaces subject to maintenance workers, Fabric construction supported by a skeleton structure, All other construction, except one- and two-family, Ordinary flat, pitched, and curved roofs (that are not occupiable), Primary roof members exposed to a work floor, Floors and other similar surfaces shall be designed to support the uniformly distributed, In office buildings and in other buildings where partition locations are subject to change, provisions for partition weight shall be made, whether or not partitions are shown on the, Floors and other surfaces that are intended to support vehicle, Where any structure does not restrict access for vehicles that exceed a 10,000-pound (4536 kg) gross vehicle weight rating, those portions of the structure subject to such, Where a structure or portions of a structure are accessed and loaded by fire department access vehicles and other similar emergency vehicles, the structure shall be designed for the greater of the following, Garages designed to accommodate vehicles that exceed a 10,000-pound (4536 kg) gross vehicle weight rating, shall be designed using the live loading specified by, Where a structure is intended to have forklifts or other movable equipment present, the structure shall be designed for the total vehicle or equipment load and the individual wheel, The maximum weight of vehicles allowed into or on a garage or other structure shall be posted by the, Grab bars, shower seats and dressing room bench seats shall be designed to resist a single concentrated load of 250 pounds (1.11 kN) applied in any direction at any point on the grab bar or seat so as to produce the maximum, Members, elements and components subject to dynamic, For the purpose of design, the weight of machinery and moving, Members without provisions for continuous shear transfer normal to their span, Ordinary flat, pitched and curved roofs, and, The weight of all landscaping materials shall be considered as, The structure of a roof that supports solar, Roof structures that provide support for ballasted. View Map List of Communities Description of Dividing Line. (Supp. The Department of Defense references the International Building Code for constructing military facilities, including those that house U.S. troops around the world and at home. Such roofs shall be designed to sustain the load of rainwater that will accumulate on them to the elevation of the secondary drainage system plus the uniform load caused by water that rises above the inlet of the secondary drainage system at its design flow determined from, The design and construction of buildings and structures located in, The following documentation shall be prepared and sealed by a, Every structure, and portion thereof, including nonstructural components that are permanently attached to structures and their supports and attachments, shall be designed and constructed to resist the effects of earthquake motions in accordance with ASCE 7, excluding Chapter 14 and Appendix 11A. -conditioning contractors shall be as required by the Mechanical Code and applicable State laws. R301.2(4)B REGIONS WHERE DESIGN FOR HIGH WINDS IS REQUIRED (by the IRC). The proposed design windspeed for the structure shall be based on Glazed openings located within 30 feet (9144 mm) of, Glazed openings located more than 30 feet (9144 mm) above. Inland exposures in those counties must withstand a three-second wind gust moving at 120 miles per hour. Design wind pressure to be used in determination of wind, 1. During strong thunderstorms, straight line wind speeds can exceed 100 mph. Building standards official means the neighborhood protection official or the building official or the fire code official (as defined in the Fire Code ), according to their respective enforcement responsibilities as provided in this article or in the Fire Code. 40 percent for members supporting one floor. The 2006 International Building Code and the 2006 International Residential Code contain the requirements adopted to determine a structures eligibility for hail and windstorm insurance from the Texas Windstorm Insurance Association. June 6, 2018. But not one word about tornado protection. However, while it covers most issues regarding home building, it is completely silent about provisions for tornado-resistant houses. The alternate wind design provisions in this section are simplifications of the ASCE 7 Directional Procedure. Pricing; Trades. *** If you do not see a V2, V3, etc. Eligible segments are required to petition properties in the area directly affected to determine support. Jeffrey Joyner has had numerous articles published on the Internet covering a wide range of topics. The program has been in existence since 1995 and was developed as a "traffic calming" tool to improve safety in residential neighborhoods. The ICC is the product of confederating three earlier existing regional code-writing organizations: International Conference of Building Officials (ICBO), Building Officials and Code Administrators International, Inc. (BOCA), and Southern Building Code Congress International (SBCCI). Box 1562 | Houston, Texas 77251 Designers of record As the 2012 International Residential Code (IRC) does not address, cast-in-place deep foundations, provide a soil investigation report as, required by the 2012 International Building Code (IBC). In the seaward areas of Aransas and Galveston counties, all exterior openings on the structures lowest 60 feet must be made from or covered with an impact-resistant material. R905.2.4.1 Wind resistance of asphalt shingles. Frost Depth Winter Design Temp. endstream endobj startxref Wind Design. Load due to fluids with well-defined pressures and maximum heights. The basic design wind speed, V, for the special wind regions indicated near mountainous terrain and near gorges shall be in accordance with local jurisdiction requirements. The F-Scale was replaced with the Enhanced Fujita Scale (EF-Scale) in the United States in February 2007. N?UWl]~rXZ|8SA%NB7\y-eM}&0@@/O-twt.Q|"84\wY&]x}~ A]>_BfY~IJ =C'N[{A~*w00WtAC:1#X$;:ZA The demand has always been greater than our ability to fund and construct. For Wind Speed in Dothan please reference Section 1609 in the 2015 IBC to determine your risk category (I, II, III or IV), then reference proper Ultimate Design Wind Speed Figures 1609.3 (1), 1609.3 (2), or 1609.3 (3). The hill, ridge or escarpment is unobstructed upwind by other such topographic features for a distance from the high point of 50 times the height of the hill or 1 mile (1.61 km), whichever is greater. Note again that there is no reference in the IRC Wind Design map to tornado wind design provisions in the regions shown below. Simply put, speed humps are designed to reduce speeding on residential streets. All shingles shall be tested and labeled to comply with the requirements of ASTM D 7158. ii. The roof tiles shall be either loose laid on battens, mechanically fastened. Scuttles, skylight ribs and accessible ceilings, 31. Speed: Per local jurisdiction, typically as shown in Table 1. Minimum requirements for Casper, Wyoming, are as follows: Ground and roof snow loads: 30# for all structures. Shingles classified using ASTM D 3161, Class F, are acceptable for use in all cases where special fastening is required. Wind exposure: C Seismic Design Category: B Weathering: Severe Climate zone: 6B Ice barrier IS REQUIRED on eaves only Drip edge IS REQUIRED on eaves and rakes Adopted codes include the 2018 IRC, with local amendments: Ground snow load: 30 lbs. A map that illustrates the areas and cities that are a part of the program for Harris County is presented above. Fire, rescue, ambulance and police stations and emergency vehicle garages. A psychological attitude seems to have developed that we should work to improve the design and construction of houses for small and intermediate wind forces and assume that little can be done about saving houses that will be ravaged by the more severe tornadoes and hurricanes. Wind exposure. with a wind speed of 115 mph. Change your email address or Update your record. out. Show the direction of slope for the garage or carport floor on Floor Plan. Please note that evidence of support is only one of many rating factors used to evaluate and determine which segments will be funded by the City. Required Inspection Required Renewal Not Required Fee $84.98 Admin fee $31.32 Plan review fee May be subject to valuation plan review Processing Time Subject to online processing or in person sales window Conditions & Exceptions Statutory Authority Conditions & Exceptions Plan review required depending on the scope of work.
