JimCunningham
Structural
- Feb 5, 2016
- 2
I need a clarification on the definition of Substantial Structural Damage as defined in the 2009 IEBC. See excerpt below:
SUBSTANTIAL STRUCTURAL DAMAGE. A condition where:
1. In any story, the vertical elements of the lateral-force-resisting system have suffered damage such that the lateral load-carrying capacity of the structure in any horizontal direction has been reduced by more than 20 percent from its predamaged condition; or
2. The capacity of any vertical gravity load-carrying component, or any group of such components, that supports more than 30 percent of the total area of the structure's floor(s) and roof(s) has been reduced more than 20 percent from its predamaged condition and the remaining capacity of such affected elements, with respect to all dead and live loads, is less than 75 percent of that required by the International Building Code for new buildings of similar structure, purpose and location.
In number 2 above, are they referring to vertical components that carry gravity loads (i.e. walls and columns), or are they referring to gravity load carrying components (i.e. walls, columns, beams, joists, rafters) that carry vertical gravity loads?
SUBSTANTIAL STRUCTURAL DAMAGE. A condition where:
1. In any story, the vertical elements of the lateral-force-resisting system have suffered damage such that the lateral load-carrying capacity of the structure in any horizontal direction has been reduced by more than 20 percent from its predamaged condition; or
2. The capacity of any vertical gravity load-carrying component, or any group of such components, that supports more than 30 percent of the total area of the structure's floor(s) and roof(s) has been reduced more than 20 percent from its predamaged condition and the remaining capacity of such affected elements, with respect to all dead and live loads, is less than 75 percent of that required by the International Building Code for new buildings of similar structure, purpose and location.
In number 2 above, are they referring to vertical components that carry gravity loads (i.e. walls and columns), or are they referring to gravity load carrying components (i.e. walls, columns, beams, joists, rafters) that carry vertical gravity loads?
