Codes & standards Report National Sunroom Association

1. Dan Walker, P.E. Thomas Associates, Inc. Thursday, March 4, 2010 Codes & standards ReportNational Sunroom Association

2. Topics for Discussion • ASCE 7-2010 • ICC Code Update • Florida Building Code • Minnesota Energy Code • AAMA / NPEA / NSA 2100 Revisions • Industry Opportunities

3. ASCE 7-2010 Update

4. ASCE 7-10 Update • Will be available in 1-2 months • Move to risk based standard, from occupancy based • New performance based alternate procedures • Testing to show performance capability of structural & non-structural components & connections • Structural integrity section expanded • Load path • Lateral force resisting systems

5. ASCE 7-10 Update (cont’d) • Wind speed basis changed – 3 maps (Category I, Category II & III, Category IV) • 700 year to 1700 year map (higher wind speeds) • Load factors are incorporated, like seismic • TA analysis of major cities shows same or lower wind loads for most structures (approx. -5%) • Higher wind loads on the hurricane coasts • Important Take Away: We found most wind loads actually decreased, especially in the inland areas. Some areas in central Florida had modest increases. • For ASD design method, multiply calculated loads by 0.60 (because load factors are included in new method)

6. Updated Wind Map – Category II

7. Updated Wind Map – Category III & IV

8. ASCE 7-10 Update (cont’d) • Seismic maps significantly different – now risk based • Deck & Balcony Live Load = 1.5 x occupancy served, but not more than 100 psf • Snow Load – previous ASCE 7-05 excluded 70 degree slope and greater from unbalanced drifting • ASCE 7-10 will exempt 30 degrees and greater • Sliding snow clarified as not combined

9. 2012 ICC Code Development

10. ICC Code Development • I-Codes Adoption Status (IRC / IBC / IECC) • 2000 – 5% • 2003 – 25% • 2006 – 60% (KY, MI, MN, NH, NJ, NC, OH, RI, VA) • 2009 – 10% (CA, IL, IA, MD, OK, PA) • 2012 edition is in process • ICC “Final Action Hearings” – 2 of them • IBC, IMC, etc……………………May 14 – 23, 2010 • Dallas, TX • IRC, IECC, IZC, IPMC…………Oct. 21 – Nov 1, 2010 • Charlotte, NC

11. NSA Code Proposals • G2-09/10 – Patio Cover Definition & Appx Changes • S46-09/10 – Patio Cover Design Loads • S169-09/10 – Patio Cover Slab & Footing Design • EC53-09/10 – Sunroom Definition • RB3-09/10 – Patio Cover Definition • RB10-09/10 – Patio Cover Roof Live Load • RB11-09/10 – Screen Enclosure Design Req’mts • RB76-09/10 – Patio Cover & Screen Encl. Footings • RB130-09/10 – Patio Cover Wall Configuration • All disapproved at CDH, not resubmitted

12. 2012 ICC Code Development Cycle • Proposals by Others • AAMA Public Comment – Adds “AAMA / NPEA / NSA 2100-10” to IRC • Various EC proposals • R-value of foam products (blowing agents) • Visible transmittance requirements • Air Barriers – blower door test requirements • Lower fenestration U-factors • Lower SHGC in the south climate zones • Higher roof & wall insulation • Attempts to limit south and west facing fenestration in certain climate zones

13. Energy Code Proposals • EC29-09/10 – Thermally isolated sunroom exception for SHGC of 0.40 in CZ 1 – 3 (IECC – D, IRCE – AS) • EC31-09/10 – Prescriptive vertical fenestration limit to 20% area based on house floor area (IECC – AS, IRCE- D) • EC68-09/10 – Increase thermally isolated sunroom roof insulation, decreased U-factor (IECC – AM, IRCE – D) • R-19 → R-24 in CZ 1-4 • R-24 → R-30 in CZ 5-8 • U-factor vertical glazing, U-0.50 → U-0.45 • U-factor for skylights, U-0.75 → U-0.70 • EC72-09/10 – Adds projection factor trade off for SHGC (IECC – D, IRCE – D) • EC77-09/10 – Adds exception for higher U-factor if materials are recyclable (IECC – D, IRCE – D)

14. Florida Building Code

15. Florida Building Code • Current edition is 2007 • Next edition to be based on 2009 I-Codes • Florida requires they are available to public for 6-months before selecting them as basis • October 1, 2009 FL selects 2009 I-Codes as basis for 2010 FL Building Code • March 1, 2010 “Initiation Draft” posted to the web • Will contain all 2007 amendments referenced to 2009 I-Codes • Will also contain local amendments

16. Florida Building Code • April 2, 2010 - Amendments due via the Commission website • May 2, 2010 – Proposed amendments posted to the Commission website for 45 day comment period (ends June 15, 2010) • September 3, 2010 - FL TAC will post recommendations on Commission website for 45 day review (ends October 18, 2010) • December 2010 Commission hearing

17. Florida Building Code • February 1, 2011 – Commission will File Rule adoption 2010 FBC and post the supplement to the Commission website • April 2011 to June 2011 – Code amendments to resolve glitches prior to implementation • December 2011 – 2010 FBC implemented • Cannot be sooner than 6-months from date available to the public

18. Florida Building Code • Florida has adopted portions of AAMA / NPEA / NSA 2100 • Questions are coming in about updating the adopted material for 2010 FBC • What level of activity will we have? • Will 2100 be finished in time, or will we allow others to update this information directly in FL code? • Florida energy provisions do not provide for thermally isolated sunrooms – what to do here?

19. Minnesota Energy Code • Helpful websites: • http://www.bamn.org/energycode/ • https://www.revisor.leg.state.mn.us/data/revisor/rule/current/1322/1322.pdf • MN Energy Code effective June 1, 2009

20. Minnesota Energy Code

21. Minnesota Energy Code

22. Minnesota Energy Code • This looks like it could help – but what about walls? • A well written MN code proposal that references this provision could be successful • “Sunroom Roof” & “Sunroom Wall” are different types of construction (i.e. Non-attic, non-frame construction) • Cost effectiveness at R-38 and R-44 not justified for roofs • Continuous exterior insulation not practical with IMPs, nor is R-19 when considering rigid insulation

23. NSA MN Proposal – Discussion

24. NSA MN Proposal - Discussion

25. NSA MN Proposal - Discussion • An appropriate reason statement must be drafted to go with these changes.

26. AAMA / NPEA / NSA 2100 • Joint conference call scheduled for March 9, 2010 at 2:00 pm Eastern Time • Will be an NSA call with NPEA and AAMA participation • Discussion will be on combined draft of the document • Decisions to be made – which provisions to use? • ICC’s deadline for this work is May 13, 2010 • To be referenced in the code, must be available to public • AAMA 45-day review process means our real “deadline” is March 29, 2010

27. Engineering Opportunities • “Nerds Unite!” – Project NSA’s collective engineering knowledge • ICC Discussion Boards • Engineering Tips Forum • Other online construction communities • Educate for the Future – Use what we’ve accomplished • ICC educational session – for building officials • State and local presentation from NSA • Geared for delivery by dealer members or district managers • White Papers – Document our successes / good practices Concrete Anchors (done, but how do we use this?)  Energy?  Window / Deck Guards? Foundations? Site specific engineering issues?

28. In Summary - NSA Projects • AAMA / NPEA / NSA 2100 • Coordinate changes with AAMA & NPEA • NSA Sandwich Panel Standard • NSA Sunroom Component Testing & Analysis • Resource Document (ERD or TRD) • Fire Testing Subcommittee • Energy Efficiency Subcommittee? • Update of Code Compliance Checklist • 2006 IRC • 2009 IRC

29. Any Questions?