Important Considerations with Conventionally Framed Valleys

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Important Considerations with Conventionally Framed Valleys

  • Some builders may choose to conventionally frame a valley (i.e., over-frame) instead of using valley set truss frames. 
  • Requirements in the IRC and the ANSI/AF&PA WFCM-2001 indicate it is not acceptable to bear the ends of valley rafters on top of roof sheathing without structural framing below. 
  • Valley rafters must be adequately connected at their supports to resist lateral and uplift forces caused by gravity and wind loads.
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2006 December
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