Results 1 to 11 of 11
  1. #1
    Join Date
    Mar 2007
    Location
    Beaches of South Walton, FL
    Posts
    55

    Default 2001 FLA BLDG CODE QUESTION

    I was wondering if any code specialists can confirm that the use of roof batten strips WERE NOT permitted under the 2001 FLA Bldg Code?

    I have a copy of the 2001 Code and found section 2322.2 that appears to address sheathing...and it doesn't say that batten strips are permitted (with a metal panel roof); so I suspect that batten strips WERE NOT permitted under this code, but could use a confirmation.

    Thanks in advance.

    Peace and blessings

    Similar Threads:
    F.I.R.E. Services
    JD Johnson
    Beach To Bayou Property Inspections

  2. #2
    Join Date
    Mar 2007
    Location
    Ormond Beach, Florida
    Posts
    26,248

    Default Re: 2001 FLA BLDG CODE QUESTION

    Quote Originally Posted by JD Johnson View Post
    I have a copy of the 2001 Code and found section 2322.2
    That section applies only to the HVHZ, i.e., Miami-Dade County and Broward County.

    You want 2309.3 Roof Sheathing.


    From the 2001 Florida Building Code
    - 2309.3 Roof sheathing
    - - 2309.3.1 All rafters and roof joists shall be covered with one of the following sheathing materials:
    - - - 1. Lumber, solid sheathing of wood boards 5/8 inch (15.9 mm) (net) minimum thick or spaced sheathing of wood boards 3/4 inch (19.1 mm) (net) minimum thick.
    - - - 2. Wood structural panels applied in accordance with the provisions of Table 2307.6B, Table 2309.3A and nailed in accordance with Table 2306.1.
    - - - 3. Fiberboard insulating roof deck not less than 1 inch nominal thickness.


    Jerry Peck, Construction / Litigation Consultant
    Construction Litigation Consultants, LLC ( www.ConstructionLitigationConsultants.com )
    www.AskCodeMan.com

  3. #3
    Join Date
    Mar 2007
    Location
    Beaches of South Walton, FL
    Posts
    55

    Default Re: 2001 FLA BLDG CODE QUESTION

    Thanks Jerry. I can confidently say that batten strips are NOT permitted under the 2001 code.

    Best regards -

    JD Johnson
    Beach To Bayou Property Inspections

  4. #4
    chris mcintyre's Avatar
    chris mcintyre Guest

    Default Re: 2001 FLA BLDG CODE QUESTION

    Quote Originally Posted by Jerry Peck View Post
    That section applies only to the HVHZ, i.e., Miami-Dade County and Broward County.

    You want 2309.3 Roof Sheathing.


    From the 2001 Florida Building Code
    - 2309.3 Roof sheathing
    - - 2309.3.1 All rafters and roof joists shall be covered with one of the following sheathing materials:
    - - - 1. Lumber, solid sheathing of wood boards 5/8 inch (15.9 mm) (net) minimum thick or spaced sheathing of wood boards 3/4 inch (19.1 mm) (net) minimum thick.
    - - - 2. Wood structural panels applied in accordance with the provisions of Table 2307.6B, Table 2309.3A and nailed in accordance with Table 2306.1.

    - - - 3. Fiberboard insulating roof deck not less than 1 inch nominal thickness.
    What is spaced sheathing of wood boards?


  5. #5
    Join Date
    Mar 2007
    Location
    Ormond Beach, Florida
    Posts
    26,248

    Default Re: 2001 FLA BLDG CODE QUESTION

    Quote Originally Posted by JD Johnson View Post
    Thanks Jerry. I can confidently say that batten strips are NOT permitted under the 2001 code.

    Best regards -

    JD,

    That's not what that says, review it again.

    Also, you need to define if the battens are "battens" or "purlins". The "purlins" are like 'spaced sheathing' and are only used with metal roofing which is rated as structural, such as is found on metal buildings.

    Typically, the metal roofing found on residences are "non-structural" metal roofing and are therefore not allowed on purlins.

    Now, as to the "battens" ... more information is needed to understand precisely what you are referring to and respond that they would be allowed or not.

    The code reference I posted shows that spaced sheathing IS allowed outside the HVHZ (outside Miami-Dade and Broward counties).

    Jerry Peck, Construction / Litigation Consultant
    Construction Litigation Consultants, LLC ( www.ConstructionLitigationConsultants.com )
    www.AskCodeMan.com

  6. #6
    Join Date
    Mar 2007
    Location
    Beaches of South Walton, FL
    Posts
    55

    Default Re: 2001 FLA BLDG CODE QUESTION

    OK - thanks...two things.

    A) The house is located across the street from the beach (Gulf of Mexico in Okaloosa county [panhandle]), so I thought that puts it in a high velocity zone..am I wrong about that?

    B) I guess I didn't understand the term spaced sheathing, so for clarification, I have attached a photo or what I am dealing with.

    So, your continued guidance is appreciated.

    ***IMPORTANT*** You Need To Register To View Images ***IMPORTANT*** You Need To Register To View Images
    JD Johnson
    Beach To Bayou Property Inspections

  7. #7
    Join Date
    Mar 2007
    Location
    Ormond Beach, Florida
    Posts
    26,248

    Default Re: 2001 FLA BLDG CODE QUESTION

    Quote Originally Posted by JD Johnson View Post
    A) The house is located across the street from the beach (Gulf of Mexico in Okaloosa county [panhandle]), so I thought that puts it in a high velocity zone..am I wrong about that?
    The HVHZ is *only* Miami-Dade and Broward county.

    Other coastal counties had the opportunity to join into the HVHZ when the 2001 Florida Building Code was being discussed and declined to be so included. Remember, that was BEFORE the hurricanes 2004/2005/2006 and they were still thinking that "Only South Florida gets hurricanes, so why do we need to be covered by the HVHZ and do all the things required by it?"

    B) I guess I didn't understand the term spaced sheathing, so for clarification, I have attached a photo or what I am dealing with.
    Those look more like purlins and that metal roofing would *most likely* need to be "structural rated" metal roofing instead of the regular metal roofing panels, however ... some ... metal roofing manufacturers allow their regular metal roofing to be installed on purlins, so you would need to check on that TO BE SURE.

    Jerry Peck, Construction / Litigation Consultant
    Construction Litigation Consultants, LLC ( www.ConstructionLitigationConsultants.com )
    www.AskCodeMan.com

  8. #8
    Join Date
    Mar 2007
    Location
    Beaches of South Walton, FL
    Posts
    55

    Default Re: 2001 FLA BLDG CODE QUESTION

    Jerry...as always, your knowledge is unsurpassed and your willingness to assist is appreciated. I recall now that it was the code AFTER the 2001 code that included high wind zones within a mile of the coastline.

    I still don't understand the difference between purlins and battens, but I suspect that it has something to do with the spacing and size of the lumber. I'll pass the info along to my client.

    Again, thanks for your assistance.

    Best regards

    JD Johnson
    Beach To Bayou Property Inspections

  9. #9
    Join Date
    Mar 2007
    Location
    Ormond Beach, Florida
    Posts
    26,248

    Default Re: 2001 FLA BLDG CODE QUESTION

    Quote Originally Posted by JD Johnson View Post
    I recall now that it was the code AFTER the 2001 code that included high wind zones within a mile of the coastline.
    This is, I think, what you are thinking of in the 2001 Florida Building Code:
    Wind-Borne Debris Region.
    - 1. Areas within one mile (1.6 km) of the coastal mean high water line where the basic wind speed is 110 mph (49 m/s) or greater.
    - 2. Areas where the basic wind speed is 120 mph (53 m/s) or greater except from the eastern border of Franklin County to the Florida-Alabama line where the region includes areas only within 1 mile of the coast.

    Note that 2. is where the Florida legislature, in their infinite wisdom, stated that wind borne debris does not happen at 120 mph or greater in the Panhandle, thanks to the legislators from that area and the paper company (you know which one) which owns so much of that area.

    That some how, Mother Nature KNOWS not to tread where the politics are stronger than anything else.

    That silly area was removed when the 2004 Florida Building Code came in and the legislators recognized that, indeed, hurricanes DO blow as mightily in the Panhandle as in other areas and therefore needed to be addressed in the code the same as for elsewhere.

    I still don't understand the difference between purlins and battens, but I suspect that it has something to do with the spacing and size of the lumber.
    Battens are typically smaller and are usually placed over other wood, whereas purlins are lateral roof framing which span from beam/rafter/truss/etc. to another beam/rafter/truss/etc. and the roofing is laid on the purlins.

    There is another "purlin" and that is what is placed under a rafter in the attic and is supported by a purlin support, with the purlin being used as an intermediate support for the rafter, reducing its bearing-to-bearing span, which allows for a smaller rafter (because its span is reduced). Some insist that this is the only meaning for "purlin", however, the other use and meaning predates this use and meaning (stated so this does not turn into a 'those are not purlins' argument ).

    Jerry Peck, Construction / Litigation Consultant
    Construction Litigation Consultants, LLC ( www.ConstructionLitigationConsultants.com )
    www.AskCodeMan.com

  10. #10
    Join Date
    Mar 2007
    Location
    Beaches of South Walton, FL
    Posts
    55

    Default Re: 2001 FLA BLDG CODE QUESTION

    Clarification appreciated. I was familiar with the term 'perlin' as it applied to lumber used under the roof framing, so thanks for this definition. I also am familiar with batten stips that are applied over the plywood...but those would not be visible from the attic, so understand the confusion of my use of the term.

    So, how would I know the difference between "spaced sheathing" as acceptable in the code, and the use of perlins, that are not acceptable? Is there a smaller spacing between the acceptable sheathing than the unacceptable perlins? Just wondering.

    Also, yes - you identified the Wind Bourne Debris Area, that I mistakenly referred to as the HVWZ.

    JD Johnson
    Beach To Bayou Property Inspections

  11. #11
    Join Date
    Mar 2007
    Location
    Ormond Beach, Florida
    Posts
    26,248

    Default Re: 2001 FLA BLDG CODE QUESTION

    Quote Originally Posted by JD Johnson View Post
    So, how would I know the difference between "spaced sheathing" as acceptable in the code, and the use of perlins, that are not acceptable? Is there a smaller spacing between the acceptable sheathing than the unacceptable perlins? Just wondering.

    "Spaced sheathing" would be much closer together, typically about 6" to 10" apart, maybe slightly more, depending on what type of roofing was being installed over the spaced sheathing. The spaced sheathing board would be that ... "boards" ... which typically designate wood which is nominally 1x in thickness. Here is an example: http://www.cedarbureau.org/installat...oof-manual.pdf scroll down to the top of page 4.

    Typically, if you see 2x lumber or planking you are looking at "purlins", and with metal roofing the roofing panels would be heavier gage (thicker) so the metal roofing panels safely span the gap between the purlins, which may be as far apart as the engineer specifies them to be (which depends on the type of construction, the type of roof covering, and the loading placed on the structure).

    Jerry Peck, Construction / Litigation Consultant
    Construction Litigation Consultants, LLC ( www.ConstructionLitigationConsultants.com )
    www.AskCodeMan.com

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •