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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
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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
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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
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Documentation is provided which shows that the structure meets or has been retrofitted to meet all the following as a minimum:
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Parapets, Chimneys, Cornices and other exterior architectural ornamentations are braced for out of plane loading
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Exterior walls are attached to all floors and roof levels
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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
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Exterior walls meet or exceed the following height to thickness ratios unless they have been retrofitted for out-of-plane loading
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| 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.