I-CODE REFERENCES “Very useful training and review tools for transitioning to a new code edition. The Significant Changes books allow code users to zero in on what is important in a relatively short amount of time. The clear and concise writing style conveys the technical information in a clear manner.” Ali M. Fattah, P.E. Senior Research Engineer, City of San Diego, California, Development Services Department Significant Changes to the IECC and ANSI/ASHRAE/IES Standard 90.1 6.4.4.1.5 ■ Radiant Floor Heating 167 6.4.4.1.5 Radiant Floor Heating Insulation Floor covering Flooring board Flooring board xp Heat emission plates increase heat transfer where necessary Insulation decreases downward heat flow Heat emission plates increase heat transfer where necessary Fiberglass batt insulation with reflective surface up xc Wood joist or truss Finished floor Do xp xc Tube Tube in Wood joist or truss Tube Tube under subfloor CHANGE TYPE: Addition CHANGE SUMMARY: This change adds a requirement for insulation on the bottom of radiant heated floors. 2010 STANDARD: 6.4.4.1.5 Radiant Floor Heating. The bottom surfaces of floor structures incorporating radiant heating shall be insulated with a minimum of R-3.5. Adjacent envelope insulation counts toward this requirement. Exception: Requirements for heated slab-on-grade floors incorporating radiant heating are in Chapter 5. CHANGE SIGNIFICANCE: Radiant heated floors transfer heat to occupied spaces primarily via radiation. The bottom of the floors are exposed to unconditioned, indirectly conditioned, or semi-heated spaces. In these applications, heat transfer from the floor above is uncontrolled and can cause energy loss. Insulation must be added to keep from heating the room below the floor © ASHRAE 45510_part_5_ptg01_hr_154-194.indd 167 03/06/13 12:34 PM # 111456 Cust: Cengage Au: Wallace Pg. No. PB Title: Significant Changes to the International Energy Conservation Code Server: ____ C/M/Y/K Short / Normal DESIGN SERVICES OF S4-CARLISLE Publishing Services e: Significant Changes to the International Energy Conservation Code (2012 Edition) and ANSI/ASHRAE/IES Standard 90.1 (2010 Edition) Authors Mack Wallace, Joseph Deringer and Bill Hudson explore commercial and residential energy conservation through efficiency in envelope design, mechanical systems, power and lighting systems, and new materials and techniques. (120 pages) Soft Cover......................................... (7809S12) 24.50 19.50 PDF Download................................. (8950P518) 37.00 29.50 f: Significant Changes to the ICC A117.1 Accessibility Standard, 2009 Edition Authored by ICC code expert Jay Woodward, this one- of-a-kind reference will familiarize professionals with the many important accessibility-related changes in the A117.1 standard. (178 pages) Soft Cover......................................... (7811S09) 28.95 24.50 Buy the A117.1-2009 Standard and Significant Changes together and SAVE! Soft Cover...................................... (9033BN09) 67.50 54.00 FULL COLOR! HUNDREDS OF PHOTOS AND ILLUSTRATIONS! Changes are identified then followed by in-depth discussion of how the change affects real world application. Photos, tables and illustrations further clarify application. SEE MORE SAMPLE PAGES ONLINE. SIGNIFICANT CHANGES TO ASCE 7-10 ALSO AVAILABLE. SEE PAGE 56 BROWSE HUNDREDS OF 2015, 2012 & 2009 CODE REFERENCES ONLINE! TO ORDER | PHONE 1-800-786-4452 | FAX 1-866-891-1695 | SHOP.ICCSAFE.ORG 19
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