DS 2-8 Earthquake Protection for Water-Based Fire ... - FM Global
DS 2-8 Earthquake Protection for Water-Based Fire ... - FM Global
DS 2-8 Earthquake Protection for Water-Based Fire ... - FM Global
Create successful ePaper yourself
Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.
<strong>Earthquake</strong> <strong>Protection</strong> 2-8<br />
<strong>FM</strong> <strong>Global</strong> Property Loss Prevention Data Sheets Page 23<br />
Fig. 9. Configuration 1 Fasteners with one diagonal and one vertical brace-fasteners<br />
into underside of structural memeber<br />
2. For sway bracing configurations using two opposing tension and compression diagonal braces<br />
(Section 2.2.1.3.5[D][2]), distribute the larger of one-half the horizontal seismic load (H/2) or the<br />
load determined by proportional distribution of design load, H, to each fastener.<br />
3. For sway bracing configurations using two opposing tension-only diagonal braces (Section<br />
2.2.1.3.5[D][3]), distribute the full horizontal seismic load (H) to each fastener because neither brace<br />
is being considered as capable of resisting compression.<br />
4. When structural members do not meet minimum requirements defined elsewhere (such as when<br />
wood members are dimensionally inadequate) or whenever any doubt exists regarding their<br />
load-carrying capabilities, provide verification with the system design in<strong>for</strong>mation that the structural<br />
member and the attachment point <strong>for</strong> the sway bracing are able to carry the anticipated load. Where<br />
it is necessary to rein<strong>for</strong>ce the structural members, include a structural engineering analysis or<br />
verification with the system design in<strong>for</strong>mation.<br />
©2010 Factory Mutual Insurance Company. All rights reserved.
Change language