Significant 2018Code Changesfor MultifamilyBuildingsJune 29, 2017
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Learning ObjectivesParticipants in this webinar will be able to: Discuss significant changes to the 2018 edition of theInternational Building Code and related codes affectingmultifamily construction. Recognize the potential impacts of the 2016 edition of ASCE 7 onroof coverings, roof framing and on design in areas of moderateor high risk of earthquakes. Review significant changes relating to fire resistance in buildings,design and construction of balconies, and accessibility. Review the basics of the code development process and howcodes are adopted at the state or local level.
Speaker – Gary Ehrlich Director, Codes &Standards for NAHB Licensed ProfessionalEngineer in MD
Speaker – Dan Buuck Senior Program Manager,Codes & Standards forNAHB ICC Certified BuildingOfficial
Polling Question 1Which best describes your profession? Builder or remodeler Product manufacturer or supplier Engineer or architect Code official HBA staff Other
Polling Question 2Which edition of the IBC is your state currently using? 2015 IBC 2012 IBC 2009 IBC Earlier IBC edition or other code
ICC CodeDevelopmentProcess The International Code Council (ICC)mission is to provide the highest qualitycodes, standards, products and services forall concerned with the safety andperformance of the built environment. Developed by ICC, the InternationalCodes are the most widely adoptedmodel code throughout the United States. ICC publishes a new edition of the codesevery 3 years.
ICC Code Development CycleCode ChangesPosted OnlineCode ChangesSubmittedNew CodePublishedCommittee ActionHearing (CAH)cdpACCESS OnlineGov. Consensus VotecdpACCESS OnlineAssembly VotePublic CommentHearing (PCH)CAH ReportPosted OnlinePublic CommentsSubmittedPublic CommentsPosted Online
cdpACCESS All code changes must be submittedusing the cdpACCESS portal. All Governmental Members mustregister before the Committee ActionHearings, to vote on the GovernmentalConsensus Ballot. The Governmental Consensus Ballot willbe based on the outcome of the PublicComment Hearing. www.cdpaccess.com
Storm SheltersIBC 423, 1604.5 Storm shelters only classified asRisk Category IV if intended to beused as a community shelter forpost-storm recovery. Private shelter for tenants and of amultifamily or office building andguests can be Risk Category II. Corridor(s) leading to the stormshelter need not be structurallyupgraded to Risk Category IVrequirements.Photo by George Armstrong/FEMAPhoto by Win Henderson/FEMA
Private Garages and CarportsIBC 406.3 Allows a private garage to beconstructed using the publicparking garage requirements. Permits a garage for tenantsin a multifamily building toexceed the 1000 square footarea limit for private garages. Otherwise, there must be a1-hour fire barrier every1000 square feet of garagearea.Photo by Gary Ehrlich
Enclosed Parking GaragesIBC 406.6.2 Mechanical ventilation notrequired for enclosedparking garages accessoryto Group R-3 buildings. Consistent with IRC wheremechanical ventilation isnot required for anattached garage. Cost savings for 4-storytownhouses.Photo by Rob Muir
Fire Resistance RatingIBC Table 602Allows exterior walls of GroupR-3 buildings to be unratedwhere the fire separationdistance is greater than 5 feet.Applies to Type II-B and TypeV-B construction.
Projections2015 IBCIBC Table 705.2Reverts requirements for theminimum distance of projection to2012 IBC and earlier editions. 2015:With a Fire Separation Distance(FSD) of 30 feet or more, the min.distance from the line is 20 feet. 2018:With a FSD of 5 feet or more, themin. distance from the line is 40inches.2018 IBC
Fire WallsIBC 503.1, 706.1 Not required on property linesestablished solely forownership purposes as long asheight and area limits are met. “Separate building” provisionapplies only for determiningheight/area limits andconstruction type. Do NOT need independentshear walls on each side of thefire wall.Photo by Thomas Arledge
Pedestal BuildingAttic ProtectionIBC/IFC 903.3.1.2.3Attics not required to besprinklered (NFPA 13R system) inbuildings of Type III, IV or Vconstruction where the roofassembly is over 55 feet above thelowest level of required firedepartment vehicle access shall beprotected by one of the following: Fire sprinklers Noncombustible construction Fire-retardant treated wood Fill with noncombustibleinsulation
EgressIBC 1006.4Allows the path of egresstravel to pass through morethan one adjacent story: Within a dwelling unit. Up to 4 stories in Group R-1,R-2 or R-3 occupancies. In Group R-3 congregateresidence or Group R-4.Photo by Darius Kuzmikas
Guard HeightIBC 1015.3Removes the requirement tomeasure guard height from fixedseating surfaces adjacent to the openside of elevated walking surfaces Group R-3 not more than 3 stories(36" guards). Individual dwelling units in GroupR-2 not more than 3 stories (36"guards). Correlates guard heightmeasurement with IRC & 42"guards in IBC. International Code Council
Emergency Escape andRescue OpeningsIBC 1030.1Clarifies that EEROs are onlyrequired in Group R-2 locatedin: Stories with one exit, or Stories with access to oneexitas permitted in Tables1006.3.2(1) and 1006.3.2(2).
Snow Loads1608 State-specific ground snowloads for OR, WA, ID, MT, UT,CO and NH tabulated. Ground snow loads in EasternColorado (including Denver)increased based on new study. Rain load for secondary drainsincreased from 100-year/60minute rainfall rate to 100year/15-minute rate.by DominickPhotoPhotoby DarrenEdwardsBiocchi/FEMA
Wind Loads1609 New maps with reduced ultimatedesign wind speeds for WestCoast, upper Midwest, andNortheast. New rules in Commentary foraddressing open areas in suburbanterrain. Component and cladding roofpressures for low-rise buildingsincreased. Edge and corner zoneson low-slope roofs now vary withbuilding height.Photo by FEMA News
Seismic Loads1613 Seismic ground motion mapsupdated based on new USGSdata. Higher SDC’s for southeasternNew Hampshire, easternTennessee, and Charleston, SC. New design requirements forconcrete and masonry fences. Expanded design requirementsparapets, stairs, and ceilings.Photo by Dan Golden/FEMAPhoto by FEMA News
Tsunami Loads1615 New chapter for design ofbuildings along CA, OR, WA, AKand HI coastlines to resisttsunami loads. Only required for Risk CategoryIII and IV buildings, i.e. thosewith high occupant loads, orcritical & essential facilities. States and communities areencouraged to extend to othertypes of buildings.Photo by Dan Golden/FEMAPhoto by Gabriela Aranda
Wood BalconiesIBC 2304.12.2.5 and2304.12.2.6 New provisions to address issuescontributing to balcony collapse inBerkeley. Ventilation openings required ifframing under balcony enclosedby soffit. Drainage board or mat requiredbetween concrete topping andwood framing below. All balconies must be designed for1.5x live load of area(s) served.Images Building Science Corporation
Wall HeadersIBC 2308.5.5.1 Single member headers forbearing walls added. 2x header with flat 2x aboveand below. Allows for insulation in placeof the second 2x.Figure by APA – The Engineered Wood Association
Emergency Elevator CommunicationsIBC 3001.2Adds a requirement to installcommunication systems for hearingand speech-impaired users. Visual and text-based, videobased 24/7 live interactivesystem. Voice-only options for thehearing. Able to communicate withemergency personnel via videoconferencing, chat/text softwareor other approved technology.
Fire WatchIFC 3304.5/IBC 3314.1Allows the fire code official to requirea fire watch For construction that exceeds 40feet in height. During non-working hours.Photos: www.ConstructionFireSafetyPractices.com
Smoke Detectors & Smoke AlarmsIBC 3308.6.1Adds a requirement to protectsmoke detectors and smokealarms against dust duringconstruction. Cover or temporarily remove.After dust-producing work iscompleted: Replace units that wereremoved. Uncover, inspect and cleanunits that were covered.
AccessibilityIEBC 301.1.5 Requires existing buildings tocomply with the 2009 edition ofICC A117.1 Standard forAccessible and Usable Buildingsand Facilities.Photo by Tom Redner
Energy Recovery Ventilation Requirements for ERV’shave been reduced in thecommercial portion of the2018 IECC. Many individual dwellingunit multi-family ventilationsystems will no longer needenergy recovery. In the 2015 code, nearly allrequired energy recovery. May need a timer on theventilation system to avoidthe ERV requirement.
Building Tightness Testing Multi-family units arepermitted to be sample testedwhen using the performancepath (section R405). Sampling protocol is notdefined, this will need to beworked out with the AHJ. Significant cost savings forsome multi-family buildings(e.g. garden style apartments).
Commercial Lighting ControlsThis change rewrites sections ofC405.2.5 and adds new sectionsthat add requirements forcontrols to integrate exteriorlighting controls with otherbuilding lighting controls. Thisfunctionally restricts the use ofmechanical timers. Anexception was introduced thatexempted dwelling units fromhaving to comply.
IMC and IPCSignificantChanges
Dryer DuctIMC 504.8.2Where dryer exhaust ducts areenclosed in wall or ceilingcavities, such cavities shallallow the installation of theduct without deformation.
PlenumsIMC 602Adds framing cavity plenums to thelist of plenum locations allowed inthe code.Courtesy:Building America Solution Center
Duct SealingIMC 603.9 The exception to seallongitudinal and transversejoints, seams and connectionsin ducts now includes onlythose located outside ofconditioned spaces. Previously, snap-lock andbutton-lock duct types wererequired to be sealed even insystems with pressures under2 inches water column.
How Building Codes are Adopted Legislative adoption Direct regulatory adoption (nobuilding code council) Periodic review and adoption bya state or county building codecouncil‒ Typically every 3 years‒ Some states every 6 years
How Building Codes are Amended Most states and jurisdictions permitamendments to adopted buildingcodes. Some allow amendments to eitheradd, remove or modify provisions ofthe model code. Some only allow amendments thatstrengthen the code. Some states limit the ability ofcounties or cities to makeamendments.
NAHB Code Adoption Resources NAHB offers Code AdoptionToolkits with recommendedamendments. NAHB CC&S staff can assist HBA’sin drafting amendments. NAHB CC&S staff can provideHBA’s with talking points onamendments submitted by others. nahb.org/codes
Questions and AnswersSpeaker Contact Information Gary EhrlichDirector, Codes & StandardsNAHBE-mail: email@example.com Dan BuuckSenior Program ManagerCodes & StandardsNAHBE-mail: firstname.lastname@example.org
Thank YouPlease note: Registrants will receive a link to the webinarrecording and slides within approximately 7 – 10business days. This webinar counts as one hour of continuingeducation credit for NAHB professional designations. This webinar also counts as 0.1 CEU towards ICCcertifications. Please email email@example.com if youwould like to receive ICC credit.We Build Communities
Jun 29, 2017 · IBC Table 705.2. Reverts requirements for the minimum distance of projection to 2012 IBC and earlier editions. 2015: With a Fire Separation Distance (FSD) of 30 feet or more, the min. distance from the line is 20 feet. 2018: With a FSD of 5 feet or more, the min. distance from the line is 40 inches. 2015 IBC. 2018 IBC
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2018 IBC Significant Changes 2 Identify the differences between 2015 IBC and 2018 codes. Determine if the change is an addition, deletion, modification or clarification. Identify changes in format and technical requirements. Explain the intent and application of the changes. 2018 IBC Significant Changes 3
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Significant Figures are the digits in your number that were actually measured plus one estimated digit. Significant Figures Rules: 1) All nonzero digits are significant. 2) Zeros between significant digits are significant. 3) Zeros to the left of nonzero digits are not significant. 4) Zeroes at the end of a
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This can be determined by the number of “significant digits”, also called “significant figures”, in the measurement. 6.8 meters has 2 significant digits. 7 meters has 1 significant digit. 6.76 meters has 3 significant digits. The measurement of 6.76 meters is more precise than 6.8 meters or 7 meters because it has more significant digits.
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Significant Digits and Numbers When writing numbers, zeros used ONLY to help in locating the decimal point are NOT significant—others are. See examples. 0.0062 cm 2 significant figures 4.0500 cm 5 significant figures 0.1061 cm 4 significant figures 50.0 cm 3 significant figures
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Learning Objectives A brief overview of significant base code changes between the 2012 IBC and the 2018 IBC. A review of notable Southern Nevada amendments under the 2018 IBC. A review of the unique high-rise/ mid-rise building design requirements in each local Southern Nevada Authority Having Jurisdiction (AHJ). A review of the “rules of the road” when applying the 2018 IEBC.
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Code Update 1/29/2020 2 Learning Objectives 1. Identify significant changes made in the basic 2018 IBC and IRC that are included in the 2019 CBC. 2. Identify California‐specific changes to the 2018 IBC and IRC in the 2019 CBC and CRC. 3. Identify the changes made to the 2016
2. Zero digits that occur between nonzero digits are significant. 202 contains three significant figures In these examples, the zeros 450.5 contains four significant figures are part of a measurement. 390.002 contains six significant figures 3. Zeros at the beginning of a number (i.e., on the left-hand side) are considered to be placeholders and
number of significant figures. Rules to determine the number of significant figures in a measured number: 1. Any digit that is not zero is significant. 2. Captive/buried zeros zeros between non-zero numbers are significant. 3. Leading zeros zeros at the beginning of a number with
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