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1 2015 IRC EssentialsCopyright 2015 International Code Council12016 ICC Annual Conference Education ProgramsKansas City, MO2015 IRC Essentials2015 IRC EssentialsBased on the International Residential Code (IRC )Code AdministrationCode AdministrationPart I22015 IRC EssentialsCopyright 2015 International Code Council22016 ICC Annual Conference Education ProgramsKansas City, MOIntroduction to Building CodesIntroduction to Building Codes Codes are minimum requirements to safeguard the public health, safety and welfare of the public and occupants or users of spaces or buildings. 2015 IRC Essentials3 Workbook Page 22015 IRC Essentials4 ICC Code Development CycleICC Code Development Cycle New code published every 3 years 12 month cycle Codes divided into 3 groups1. IBC, IPC, IMC, IFGC, IPSDC2. IRC, IFC, IEBC, IECC, IPMC, ISPSC, IWUIC, IZC, ICCPC, IgCCNew Edition PublishedPublic Comment HearingPublic Comments AvailablePublic Comments SubmittedReport of Public HearingCommittee Action HearingCode Changes AvailableCode Changes SubmittedWorkbook Page 32015 IRC EssentialsCopyright 2015 International Code Council32016 ICC Annual Conference Education ProgramsKansas City, MOIRC International Residential CodeIRC International Residential Code Regulates of 1- and 2-family dwellings and townhouse structures Combines all regulations for building, energy, mechanical, fuel gas.

2 Plumbing and electrical into one document2015 IRC Essentials5 Workbook Page 7 TownhousesSingle-family dwellingDwellings and TownhousesDwellings and Townhouses2015 IRC Essentials6 Maximum 3 stories above grade planeAllows a full basement in addition to 3 storiesHabitable attic is not considered a storyWorkbook Page 82015 IRC EssentialsCopyright 2015 International Code Council42016 ICC Annual Conference Education ProgramsKansas City, MODwellingsDwellings Separate means of egress to the outdoors for each dwelling unit 1 exterior exit door Egress travel distance is not regulated No limit on size of dwellings 2-family dwellings require fire-resistant separations2015 IRC Essentials7 Workbook Page 8 TownhousesTownhouses Minimum of 3 townhouses No maximum on the number of townhouses Fire-resistant separations between townhouses Townhouses open on front and back2015 IRC Essentials8 Workbook Page 9-10 FAEBDCU nits are not open on 2 sides.

3 Cannot be constructed under the IRC2015 IRC EssentialsCopyright 2015 International Code Council52016 ICC Annual Conference Education ProgramsKansas City, MOAccessory BuildingsAccessory Buildings The IRC regulates accessory buildings Use incidental and accessory to dwelling On same lot as dwelling Unlimited area 3 stories AGP2015 IRC Essentials9 Workbook Page 11 Existing BuildingsExisting Buildings Existing buildings permitted to continue without change Maintained per code under which they were constructed The IRC regulates additions, alterations and repairs to an existing building Appendix J offers compliance alternatives for construction on existing buildings Work categorized as repair, renovation, alteration or reconstruction2015 IRC Essentials10 Workbook Page 112015 IRC EssentialsCopyright 2015 International Code Council62016 ICC Annual Conference Education ProgramsKansas City, MOAdoption of the IRCA doption of the IRC Adopting by local ordinance includes: Edition and title of the IRC Purpose and scope Effective date for ordinance Insertion of local information and criteria into code text.

4 Name of the jurisdiction Design criteria Building sewer depths2015 IRC Essentials11 Workbook Page 14 AppendicesAppendices Developed in the same manner as the main body of code May provide some guidelines or examples of recommended practices May assist in the determination of alternative materials or methods Have no legal status until specifically recognized in the adopted ordinance or legislation2015 IRC Essentials12 Workbook Page 152015 IRC EssentialsCopyright 2015 International Code Council72016 ICC Annual Conference Education ProgramsKansas City, MOBuilding Official Authority and DutiesBuilding Official Authority and Duties Building Official is authorized and directed to: Enforce provisions of code Make interpretations Adopt policies and procedures Approve modifications and alternatives Limits on authority.

5 Not authorized to waive code requirements Not authorized to require more than the code13 Within intent and purpose of code2015 IRC EssentialsWorkbook Page 16 Alternative Methods and MaterialsAlternative Methods and Materials The IRC does not exclude any material or method Alternatives subject to approval by the Building Official The Building Official has an obligation to approve alternatives that meet the intent of the IRC Reports issued by the ICC Evaluation Service (ICC-ES) are valuable resources in verifying performance equal to the code requirements Reason for disapproval in writing 2015 IRC Essentials14 Workbook Page 172015 IRC EssentialsCopyright 2015 International Code Council82016 ICC Annual Conference Education ProgramsKansas City, MOPermitsPermits Construction requires a permit before work begins Exempt work: 1-story tool and storage sheds, playhouses, and similar uses 200 ft2 Decks 200 ft2 30 in.

6 Above grade not attached to a dwelling and do not serve the required exit door Fences <7 ft. in height152015 IRC EssentialsWorkbook Page 19 FeesFees The jurisdiction may charge permit fees to offset the costs of providing associated services to the public Administration costs Plan review costs Inspection costs The Building Official develops equitable and consistent procedures for establishing fees 2015 IRC Essentials16 Workbook Page 212015 IRC EssentialsCopyright 2015 International Code Council92016 ICC Annual Conference Education ProgramsKansas City, MORequired InspectionsRequired Inspections Foundation Floodplain Plumbing, mechanical, gas and electrical systems Frame and masonry Fire-resistance-rated construction Other inspections as deemed necessary Final inspection2015 IRC Essentials17 Workbook Page 24 Board of AppealsBoard of Appeals The public has the right of due process to appeal an order, decision or determination of the building official.

7 Basis for appeal: The code has been interpreted incorrectly The code does not apply An equivalent alternative was not accepted The Board of Appeals has no authority to waive code requirements2015 IRC Essentials18 Workbook Page 262015 IRC EssentialsCopyright 2015 International Code Council102016 ICC Annual Conference Education ProgramsKansas City, MOSite DevelopmentSite DevelopmentPart II19 Fire Separation DistanceFire Separation Distance Measured perpendicular to the exterior wall Measured between the building and: Lot lines Centerline of a street or alley2015 IRC Essentials20 Workbook Page 29-302015 IRC EssentialsCopyright 2015 International Code Council112016 ICC Annual Conference Education ProgramsKansas City, MOSite PreparationSite Preparation Two basic provisions: Soil characteristics as they relate to the support and stability of foundations Grading to provide surface drainage away from foundations2015 IRC Essentials21 Workbook Page 31 General RequirementsGeneral Requirements Exterior footings Minimum of 12 below the undisturbed ground level Protected against frost All footings must bear on: Natural soil.

8 Or Compacted engineered fill2015 IRC Essentials22 Workbook Page 312015 IRC EssentialsCopyright 2015 International Code Council122016 ICC Annual Conference Education ProgramsKansas City, MOPresumptive Load-bearing Values & Properties of SoilsPresumptive Load-bearing Values & Properties of SoilsUnified SoilClassificationSystem SymbolSoil DescriptionLoad Bearing Pressure (psf)DrainageCharacteristicsFrost Heave PotentialVolume Change Potential ExpansionGWWell-graded gravels, gravel sand mixtures, little or no fines3000 GoodLowLowGPPoorly graded gravels or gravel sand mixtures, little or no fines3000 GoodLowLowSWWell-graded sands, gravelly sands, little or no fines2000 GoodLowLowSPPoorly graded sands or gravelly sands, little or no fines2000 GoodLowLowGMSilty gravels, gravel-sand-silt mixtures2000 GoodMediumLowSMSilty sand, sand-silt mixtures2000 GoodMediumLowGCClayey gravels, gravel-sand-clay mixtures2000 MediumMediumLowSCClayey sands, sand-clay mixture2000 MediumMediumLowMLInorganic silts and very fine sands, rock flour, silty or clayey fine sands or clayey silts with slight plasticity1500 MediumHighLowCLInorganic clays of low to medium plasticity, gravelly clays.

9 Sandy clays, silty clays, lean clays1500 MediumMediumMedium toLowCHInorganic clays of high plasticity, fat clays1500 PoorMediumHighMHInorganic silts, micaceous or diatomaceous fine sandy or silty soils, elastic silts1500 PoorHighHigh2015 IRC Essentials23 Workbook Page 32 FillFill Engineered fill is required for: Over-excavation to remove unsuitable soils Additional material to raise the elevation of the footings above the existing undisturbed soil Engineered fill must be: Designed by a registered design professional Installed as specified in design requirements Tested as specified in design requirements2015 IRC Essentials24 Workbook Page 332015 IRC EssentialsCopyright 2015 International Code Council132016 ICC Annual Conference Education ProgramsKansas City, MOStorm DrainageStorm Drainage Final grade Minimum fall 6 within 10 of foundation Exception for local site conditions Water can be directed to swales or drains Concrete surfaces within 10 of the foundation need 2% slope2015 IRC Essentials25 Workbook Page 34 Storm DrainageStorm Drainage2015 IRC Essentials26 Workbook Page 352015 IRC EssentialsCopyright 2015 International Code Council142016 ICC Annual Conference Education ProgramsKansas City.

10 MOStructuralStructuralPart III27 Ground Snow LoadWind DesignSeismic Design CategorySpeed(mph)VultTopographicEffects Special Wind RegionWind-borne Debris Zone30 psf115 mphBTable (1)Climatic and Geographic Design CriteriaTable (1)Climatic and Geographic Design Criteria IRC adoption: jurisdiction completes table with data applicable to the jurisdiction for example:28 YesorNoYesorNo2015 IRC EssentialsWorkbook Page 39 YesorNoYesorNoIdentifyorNoIdentifyorNo20 15 IRC EssentialsCopyright 2015 International Code Council152016 ICC Annual Conference Education ProgramsKansas City, MOSubject to Damage fromIce Barrier Underlayment RequiredWeatheringFrost Line DepthTermite42 (1) (Continued)Climatic and Geographic Design CriteriaTable (1) (Continued)Climatic and Geographic Design Criteria IRC adoption: jurisdiction completes table with data applicable to the jurisdiction for example.