Room: BDS Conf Room 6(g) 2:00 PM – 3:00 PM
Agenda
- Introductions
- Discuss possible recommendations for standards required for placarding of URM Buildings
Criteria under which building placards would not be required
Buildings have previously been retrofitted to Life Safety performance objective or better using FEMA-178, FEMA 310, ASCE 31, Life Safety performance level under BSE-1 and Collapse Prevention performance level under BSE-2 as defined in ASCE 41 or Oregon Structural Specialty Code, 1993 edition or later OR
An Engineer registered in Oregon can provide documentation showing that the structure meets or has been retrofitted to meet Life Safety performance level under BSE-1 and Collapse Prevention performance level under BSE-2 as defined in ASCE 41 OR
Documentation is provided which shows that the structure meets or has been retrofitted to meet all the following as a minimum:
Parapets, Chimneys, Cornices and other exterior architectural ornamentations are braced for out of plane loading
Exterior walls are attached to all floors and roof levels
The building has at-least a minimum of two lines of vertical elements of the lateral force
resisting system parallel to each axis. Masonry walls shall have piers with a height to width ratio that does not exceed 2:1. Wall piers shall occupy not less than 40 percent of the wall’s length for the wall to be considered as providing a line of resistance Exception: If a design professional registered in Oregon can demonstrate that the flexural, shear and compressive strength Demand/Capacity ratio are equal to 2.0 or less for all walls when evaluated using ASCE 41
Exterior walls meet or exceed the following height to thickness ratios unless they have been retrofitted for out-of-plane loading
Wall types | Height to Thickness ratios |
---|---|
Walls of one-story buildings | 13 |
First-story wall of multistory building | 15 |
Walls in top story of multistory building | 9 |
All other walls | 13 |
There are no minutes available for this meeting.