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Won Door and pocket receiver for won door.

Discussion in 'Door & Hardware forum *Sponsored by Allegion' started by Builder Bob, Dec 12, 2018.

  1. Builder Bob

    Builder Bob Sawhorse

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    Currently reviewing a won door being installed as a three hour opening protective between wings of a school - Fire wall cut buildings in half for area limitations. The termination wall has a recessed pocket receiver that cuts the depth of the 8 inch blow down to 3 5/8" thickness if filled solid with grout - Calculated fire resistance of the IBC indicates that this is only good for 1 3/4 hr. rating at this point. The Evaluation report from ICC indicates that the door and related materials have been tested for the time periods listed - The fire door (won door) is slightly offset and terminates into a 8 inch block wall that will carry a 3 hour rating UL U904.

    upload_2018-12-12_17-50-1.png


    Am I really just overthinking this?

    Builder Bob
     
  2. cda

    cda Sawhorse

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    Good question!!!

    1. Does won door give any installation guidance, at that point??

    2. Does the door it self provide thevrating??? At that point
     
  3. cda

    cda Sawhorse

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    Builder Bob likes this.
  4. steveray

    steveray Sawhorse

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    Fatten out the masonry on the backside? If it doesn't terminate to the face of the assembly with a 3hr joint, I think you are absolutely on the right track to ensure that the rating is maintained at the "penetration"...
     
  5. Builder Bob

    Builder Bob Sawhorse

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    Thanks CDA - I couldn't find the information you provided initially..... The answer is in section 2.04(D).
     
  6. cda

    cda Sawhorse

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    I have not won-Doored in years

    And never thought about the rating where it stops

    Anyway have fun
     

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