To meet code, every hole that runs vertically between floors must be sealed, as well as horizontal penetrations every four feet.
7 March 2002
Copyright © 2001-2005 by Bradley D. Mohr and Kathleen A. Whalen. All Rights Reserved.
![[index]](../../../images/up.gif){kind=small}
![[next]](../../../images/right.gif){kind=small}
![[previous]](../../../images/left.gif){kind=small}
![[mail]](../../../images/envelope_nomargin.gif){kind=small}