Seismic Design Category B (areas west of the T ohono O’odham Reservation shall . The latter will be consistent with the 2018 IBC. The UA (area weighted average) alternate method, 3. Both referenced standards used were also updated. This is why it is imperative that the code user verify the edition of the code in any specific jurisdiction prior to beginning a project there. endstream
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<. Ground Snow Load Wind Speed Seismic Design Weathering Frost Line Depth Termite Decay Winter Design Temp Ice Shield Under-layment Flood Hazard Air Freezing Index Mean Annual Temp 30 115* B Severe 30” Slight None 1 No W.C.C. It should be noted that this provision is only contained in the IRC. %PDF-1.5
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Similarly, the SHGC of the fenestration is to be determined in accordance with NFRC 200-17 or by use of a default table. The 2018 IRC also permits the use of “other approved tests.” This may include Miami-Dade County test protocols, if approved by the authority having jurisdiction. Item 1 of Section R703.4 requires mechanically applied flashing to comply with AAMA 712-14. The other three compliance paths for residential construction in the 2018 IECC permit some tradeoffs in levels of energy efficiency from one building component to another. The performance caps are as follows: The U-factor requirements discussed above for vertical fenestration also apply to exterior glass doors. Minimum Uniformly Distributed Live Loads 2018 IRC Essentials USE LIVE LOAD (psf) Guardrails and handrails 200 Single concentrated load applied in any direction along the top. Thermally isolated sunrooms must also be equipped with a separate heating or cooling system or thermostatically controlled as a separate zone, if conditioned. This change from previous editions removed a significant incentive for builders to install more efficient mechanical systems than what is currently required by federal law. Although opaque doors are included in the definition of fenestration area in the 2018 IECC and 2018 IRC, they are assigned a maximum U-factor of 0.35, separate from the U-factor requirements for vertical fenestration. This increase in design wind pressure also applies to other components of the roof, such as the roof covering, sheathing and framing. Guardrail in-fill components 50 Horizontally applied normal load of 50 lb. Typically, the EERO requirements are met with operable windows or doors. Design wind speeds are used to calculate the design wind pressures. 320 0 obj
To aid in this, the International Code Council (ICC) website provides an adoption chart listing the latest edition being used in each state and in some cases in a local jurisdiction. 296 0 obj
AAMA, the Window & Door Manufacturers Association (WDMA), Fenestration Manufacturers Association (FMA) and Doors & Access Systems Manufacturers Association International (DASMA) published a technical bulletin (TB 11-1) on this topic. The intent of this later provision is to permit windows that are equipped with WOCDs to also be used to meet the EERO requirements of the 2018 IRC. Numerous federal agencies have also adopted the International Codes. This reliance on the International Codes has now spread to other countries, including Georgia (Eastern Europe), Mexico, Columbia and Honduras. Section R301.2.1.2 of the 2018 IRC outlines the locations where impact-resistant products are required. Under the prescriptive path of the 2018 IECC for residential construction, there is no limit on the percentage of glazing in the exterior wall. The maximum prescriptive SHGC and U-factor for skylights did not change between the 2015 and 2018 IECC. Above 4000 ft-Moderate . For vertical glazing, this reduction in design wind speed in ASCE 7-16 results in a reduction in design wind pressure. The maximum prescriptive SHGC for vertical glazing did not change between the 2015 and 2018 IECC. The whole building performance path permits tradeoffs between some components of the residence that impact energy use. The ASCE 7-16 wind speed maps were not adopted into the 2018 code. Sections such as R301.1.3, R301.2.2.1.1, R320.1, M1301.1, G2401.1 and P2601.1 refer to other codes either as an alternative to the provisions of the IRC or where the IRC lacks coverage for a particular type of structure, design, This bulletin can be downloaded from the AAMA online store, aamanet.org/store. 2018 IRC Update … The ability to trade off a more efficient mechanical system for other components of the building, however, is not included in the list of those permitted in the 2018 IECC. The Caribbean Community and Common Market (CARICOM: 15 Carribean counties) use the IBC, IMC, IPC and IECC as base documents for that region’s regulations. For this reason, the National Association of Home Builders (NAHB), Roofing Contractors of America (RCA), and other groups, lobbied to not have them brought into the 2018 IRC. Due to the prevalent use by federal agencies, I-codes began being enforced in countries other than the U.S, including the Middle East (Abu Dhabi, Saudi Arabia and Afghanistan). By definition, a thermally isolated sunroom must be separated from the remainder of the building either by existing exterior wall construction or construction that meets the energy efficiency requirements of the 2018 IECC for exterior walls. (Other types of residential occupancies, such as multifamily buildings and assisted-living facilities greater than three stories in height, and hotels and motels of any height, are governed by the provisions of the 2018 IECC for commercial buildings.). Provisions for design loads of all exterior cladding of residential structures—including fenestration—are set forth in Section R301 of the 2018 IRC. 4. This is similar to the requirements in the 2015 IECC and IRC, but the user should recognize that both standards were updated to 2017 editions in the 2018 IECC. Flood Hazards NFIP: February 15, 1983 . In the Northern climate zones 6 to 8 (roughly corresponding with Wisconsin to Alaska), the U-factor is not to exceed 0.40. It provides one set of energy efficiency requirements for each component of the building envelope. But, homes that are outside the scope of the prescriptive provisions of the 2018 IRC must be designed using the 2016 edition of ASCE 7. 0
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