Codes & standards Report National Sunroom Association Engineering Services Report Dan Walker, P.E. Thomas Associates, Inc. Thursday, March 4, 2010 Codes & standards Report National Sunroom Association National Sunroom Association General Meeting

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

ASCE 7-2010 Update

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

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)

Updated Wind Map – Category II

Updated Wind Map – Category III & IV

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

2012 ICC Code Development

Engineering Services Report 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 National Sunroom Association General Meeting

NSA Code Proposals All disapproved at CDH, not resubmitted 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

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

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)

Florida Building Code

Engineering Services Report 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 National Sunroom Association General Meeting

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

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

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?

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

Minnesota Energy Code

Minnesota Energy Code

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

NSA MN Proposal – Discussion

NSA MN Proposal - Discussion

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

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

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?

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

Any Questions?