COMPATIBILITY PROBLEM, PT LUMBER AND ALUMINUM
At a recent on-site inspection of a glass sunroom, there were some pressure treated lumber structural columns wrapped with trim coil (one side coated, one side bare aluminum alloy). The chemical(s) in the PT lumber had damaged and severely corroded the coil to the extent that it was entirely gone (holes).
If you or someone you know has had experience with this problem, or, if you are acquainted with anyone who may be able to provide additional information, especially a corrosion or chemical engineer, please send an email to: forms@aaof.org.
Please be forwarned that the pressure treating chemicals containing copper (any of the PT designations having a capital "C" as part of the designation) will attack, corrode and deteriorate any bare aluminum when it comes into direct contact.
FLORIDA BUILDING CODE UPDATE (October 21, 2008)
2007 FloridaBuilding Code. The printed version of the 2007 Florida Building Code is available. The code consultant has verified the inclusion of AAF changes.
Implementation Date. The Commission meetings for August at Naples, Florida were cancelled due to Tropical Storm Fay. The cancellation resulted in the need for the consideration of proposed changes before the Structural TAC to be scheduled at the October meeting. Due to statutory requirements related to rule making, the Commission delayed the implementation date of the code to March 1, 2009. (Formerly, October 1 and December 31, 2008) The decision to delay was made during a conference call on September 15, 2008.
Glitch Cycle (Florida Building Code): The final hearing before the Structural TAC was held October 13, 2008, at Tampa, Florida. The Commission acted on the recommendations of all the TACs on October 15, 2008. Changes and the Commission actions upon the changes of interest to the AAF include:
Mod #2987 Approved. Revises AAF Guide to add 6005T5 for screen enclosures: update to correct non-conservative bending moment calculations; and incorporates changes in the Aluminum Association’s 2005 Aluminum Design Manual (D. Miller)
Mod #2981 Approved. Reinserts unintentionally eliminated windbreaker provisions in HVHZ section. (J. Gascon) The provision was initially deemed “not a glitch” and denied without consideration of the merits of the change. The industry owes a vote of thanks to Structural TAC member Rusty Carroll from BrowardCounty. At the request of Mr. Carroll, the prevailing side brought the modification up for reconsideration allowing testimony on the merits of the change to be heard. The result was a recommendation from the TAC to the Commission for approval and approval by the Commission.
Mod #3220 Approved. Change to section 2002.4 changing word “either” to “both” (Belcher)
Mod #3229 Approved. Change to Sunroom definition. Deletes remnant of sunroom definition in Chapter 2 and adds reference to Section 1202. (Belcher)
Mod #3230 Approved. Deletes definition for Sunroom Addition from Section 1202 (Belcher)
Mod #3234 Approved. Change to Table 2002.4, Note 7 permitting discount for screen of lesser density (Belcher) Modifications of interest to members involved in hurricane protection:
Mod #3215 Approved. Modified to include rolling doors. Change to FBCB to reflect opening, not glazing, is protected DCA08-DEC-002 (Belcher)
Mod #3218 Declared not a Glitch. FBCR - Adds supplemental labeling. Integrates DCA07-DEC-181 (Belcher)
Mod #3219 Declared not a Glitch. FBCB - Adds supplemental labeling. Integrates DCA07-DEC-181 (Belcher) | 
