Engineering Support
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      What does Solo require for a standard roofing engineering request?

      Solo Requires: 

      • Rafter Spacing

        • Rafter spacing is the horizontal distance between the parallel rafters measured from one rafter's center to the next one

        • The standard roof rafter spacings measured on-center are 12″, 16″, and 24″

        • Rafter spacing needs to depict attic space below the proposed panel placement

       

      Examples: 

       

      • Rafter Depth

        • Rafter depth is the vertical distance between the top and bottom edges of a roof rafter.

        • The most common available lumber sizes used in roof framing include 2″×4″, 2″×6″, 2″×8″, 2″×10″, and 2″×12″

        • Rafter depth needs to depict attic space below the proposed panel placement

       

      Examples: 

       

      • Overall Attic

        • Overall Attic is the space or room at the top of a building, under the roof, often used for storing things.

        • The most common attic/truss types used in roof framing include Simple Fink, Queen, Howe, and Fan. 

        • Overall attic needs to depict attic space below the proposed panel placement

      Examples: 

       

       

      Most homes are required to have attic access, in the rare occasion that attic access is not present access can be achieved through the below methods. 

      1. Pulling back the soffit under the overhang of the roof. 

      2. Removing the bathroom vent cavity and taking photos in the cavity spacing.

      For split level homes, these photos are required in all areas where panel installation is intended.

      After instillation, some cities require a post-install letter signed and sealed by the engineer. This letter states that the system was installed per the stamped planset. 

      Post Installation Letters will need to be requested as a CAD layout change revision to ensure the layout was followed correctly on the CAD plans.

      Before sending a request for a Post Installation Letter a detailed Post Install Letter Checklist must be completed and uploaded. 

      Redirect to post letter checklist!


      Examples of photos for the Post Install Letter Checklist:

       

       

      NOTE:

      Madison, Wisconsin, and Reno, Nevada require additional photo documentation in order to pass per city requirements:

      1. Rafter Spacing

      2. Rafter Depth

      3. Rafter Type/Overall Attic

      4. Measurements of the top cord and spacing between support beams 

        1.  Measurements of the top cord depicting spacing between support beams

        2. Top chord span from bottom to diagonal and diagonal to peak

      5. Wood grade stamp of top cord

        1.  Wood grade stamp of top cord, this is the rafter attached to the roof plywood

        2. ALL photos need to depict attic space below proposed panel placement

      6. If to be built: blueprints/building plans from the manufacturer

      Please do not hesitate to contact our Engineering and CAD support teams with any questions with your request or services. Listed below are our primary points of contact.

      Engineering Support:

      CAD Support: