{"id":null,"ids":[],"kind":"named in documents","name":"San Francisco approach viaduct","tied_by":"name","block":null,"release":"v0.7.1","rows_columns":["t","id","year","y","date","kind","topic","outcome","summary","tier","source","leaf","scan","addr","quote","note","title","how","g","rec","sc"],"rows":[["f","dl-sf-facts-v1.1-haiku55-2026-10/C123303273:108/1",1990,1990,"","recommendation","study or report",null,"San Francisco Viaduct · recommendation: Expansion joint movement capacities must be increased by at least a factor of three","unverified","C123303273",108,"https://archive.org/details/C123303273/page/n107",null,null,null,"Golden Gate Bridge seismic evaluation","n","a",0,-1.0],["f","dl-sf-facts-v1.1-haiku55-2026-10/C123303273:108/2",1990,1990,"","finding","study or report",null,"San Francisco Viaduct · finding: Strength improvements are required for viaduct components to meet seismic performance criteria under maximum credible earthquake (summarized in Table 6.1)","unverified","C123303273",108,"https://archive.org/details/C123303273/page/n107",null,null,null,"Golden Gate Bridge seismic evaluation","n","a",0,3.0],["f","dl-sf-facts-v1.1-haiku55-2026-10/C123303273:107/1",1990,1990,"1990","building","study or report",null,"San Francisco approach viaduct · other: three steel girder spans and three steel truss spans on a horizontally-curved alignment","unverified","C123303273",107,"https://archive.org/details/C123303273/page/n106",null,null,null,"Golden Gate Bridge seismic evaluation","n","a",0,-1.0],["f","dl-sf-facts-v1.1-haiku55-2026-10/C123303273:107/2",1990,1990,"1990","building","study or report",null,"San Francisco approach viaduct · other: spans from the vicinity of the toll plaza to the south to reinforced concrete San Francisco pylon S2 to the north","unverified","C123303273",107,"https://archive.org/details/C123303273/page/n106",null,null,null,"Golden Gate Bridge seismic evaluation","n","a",0,-1.0],["f","dl-sf-facts-v1.1-haiku55-2026-10/C123303273:107/3",1990,1990,"1990","finding","study or report",null,"San Francisco approach viaduct · finding: members not in compliance with design criteria need seismic upgrade (illustrated in Fig. 6.4)","unverified","C123303273",107,"https://archive.org/details/C123303273/page/n106",null,null,null,"Golden Gate Bridge seismic evaluation","n","a",0,-1.0],["f","dl-sf-facts-v1.1-haiku55-2026-10/C123303273:107/4",1990,1990,"1990","finding","study or report",null,"San Francisco approach viaduct · finding: members in compliance with design criteria need no upgrade (illustrated in Fig. 6.5)","unverified","C123303273",107,"https://archive.org/details/C123303273/page/n106",null,null,null,"Golden Gate Bridge seismic evaluation","n","a",0,-1.0]]}