{"id":null,"ids":[],"kind":"named in documents","name":"Golden Gate Bridge towers","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/C124899442:16/8",1962,1962,"","project","study or report",null,"Golden Gate Bridge towers · other: static wind pressure 50 lbs. per sq. ft. on exposed area of towers","unverified","C124899442",16,"https://archive.org/details/C124899442/page/n15",null,null,null,"Report on proposed installation of rapid transit trains on Golden Gate Bridge","n","a",0,-1.0],["f","dl-sf-facts-v1.1-haiku55-2026-10/C124899442:22/1",1962,1962,"","finding","study or report",null,"Golden Gate Bridge tower shafts · finding: Gronquist concludes the towers will require no reinforcing for the addition of rapid transit","unverified","C124899442",22,"https://archive.org/details/C124899442/page/n21",null,null,null,"Report on proposed installation of rapid transit trains on Golden Gate Bridge","n","a",0,-1.0],["f","dl-sf-facts-v1.1-haiku55-2026-10/C124899442:22/2",1962,1962,"","finding","study or report",null,"Golden Gate Bridge tower shafts · finding: Reinforcing of tower shafts to bring stresses within permissible limits would be impracticable","unverified","C124899442",22,"https://archive.org/details/C124899442/page/n21",null,null,null,"Report on proposed installation of rapid transit trains on Golden Gate Bridge","n","a",0,-1.0],["f","dl-sf-facts-v1.1-haiku55-2026-10/C124899442:24/5",1962,1962,"","finding","study or report",null,"Golden Gate Bridge roadway profile · finding: appreciable and objectionable changes in roadway profile with sharp kinks at the towers","unverified","C124899442",24,"https://archive.org/details/C124899442/page/n23",null,null,null,"Report on proposed installation of rapid transit trains on Golden Gate Bridge","n","a",0,-1.0],["f","dl-sf-facts-v1.1-haiku55-2026-10/C123303273:26/5",1990,1982,"1982","finding","study or report",null,"Abdel-Ghaffar and Scanlan vibration measurements · other: identified 12 vibration modes in each tower","unverified","C123303273",26,"https://archive.org/details/C123303273/page/n25",null,null,null,"Golden Gate Bridge seismic evaluation","n","a",0,-1.0],["f","dl-sf-facts-v1.1-haiku55-2026-10/C123303273:23/2",1990,1990,"","finding","study or report",null,"Golden Gate Bridge towers · finding: earthquake effect equivalent to static horizontal force of 3.75% of tower weight","unverified","C123303273",23,"https://archive.org/details/C123303273/page/n22",null,null,null,"Golden Gate Bridge seismic evaluation","n","a",0,3.0],["f","dl-sf-facts-v1.1-haiku55-2026-10/C123303273:23/3",1990,1990,"","finding","study or report",null,"Golden Gate Bridge towers · finding: flexibility of steel towers reduces initial acceleration to about half","unverified","C123303273",23,"https://archive.org/details/C123303273/page/n22",null,null,null,"Golden Gate Bridge seismic evaluation","n","a",0,-1.0],["f","dl-sf-facts-v1.1-haiku55-2026-10/C123303273:23/5",1990,1990,"","finding","study or report",null,"Golden Gate Bridge towers · finding: towers firmly anchored to piers; no danger of movement of tower bases","unverified","C123303273",23,"https://archive.org/details/C123303273/page/n22",null,null,null,"Golden Gate Bridge seismic evaluation","n","a",0,-1.0],["f","dl-sf-facts-v1.1-haiku55-2026-10/C123303273:29/5",1990,1990,"","finding","study or report",null,"Golden Gate Bridge towers · finding: outer cells of towers would buckle in compression and yield or fracture at splice plates in tension","unverified","C123303273",29,"https://archive.org/details/C123303273/page/n28",null,null,null,"Golden Gate Bridge seismic evaluation","n","a",0,-1.0],["f","dl-sf-facts-v1.1-haiku55-2026-10/C123303273:31/2",1990,1990,"","finding","study or report",null,"Golden Gate Bridge towers · finding: review found misinterpretations in Baron's buckling strength assumptions and stress calculations","unverified","C123303273",31,"https://archive.org/details/C123303273/page/n30",null,null,null,"Golden Gate Bridge seismic evaluation","n","a",0,-1.0],["f","dl-sf-facts-v1.1-haiku55-2026-10/C123303273:31/4",1990,1990,"","finding","study or report",null,"Golden Gate Bridge towers · finding: tower stresses would be considerably below those reported by Baron, within acceptable levels","unverified","C123303273",31,"https://archive.org/details/C123303273/page/n30",null,null,null,"Golden Gate Bridge seismic evaluation","n","a",0,-1.0],["f","dl-sf-facts-v1.1-haiku55-2026-10/C123303273:31/5",1990,1990,"","recommendation","study or report",null,"Golden Gate Bridge towers · recommendation: no structural modifications of the towers be considered and no further action be taken","unverified","C123303273",31,"https://archive.org/details/C123303273/page/n30",null,null,null,"Golden Gate Bridge seismic evaluation","n","a",0,-1.0],["f","dl-sf-facts-v1.1-haiku55-2026-10/C123303273:57/1",1990,1990,"","building","study or report",null,"Golden Gate Bridge towers · other: horizontal riveted splice joints at about SO ft intervals over tower height","unverified","C123303273",57,"https://archive.org/details/C123303273/page/n56",null,null,null,"Golden Gate Bridge seismic evaluation","n","a",0,-1.0],["f","dl-sf-facts-v1.1-haiku55-2026-10/C123303273:57/2",1990,1990,"","finding","study or report",null,"Golden Gate Bridge towers · finding: horizontal splice rivets designed to resist one half the yield capacity of the joined plates","unverified","C123303273",57,"https://archive.org/details/C123303273/page/n56",null,null,null,"Golden Gate Bridge seismic evaluation","n","a",0,-1.0],["f","dl-sf-facts-v1.1-haiku55-2026-10/C123303273:57/3",1990,1990,"","finding","study or report",null,"Golden Gate Bridge towers · finding: compression failure mode is buckling, potentially non-ductile","unverified","C123303273",57,"https://archive.org/details/C123303273/page/n56",null,null,null,"Golden Gate Bridge seismic evaluation","n","a",0,-1.0],["f","dl-sf-facts-v1.1-haiku55-2026-10/C123303273:58/1",1990,1990,"","recommendation","study or report",null,"Golden Gate Bridge towers · other: total stress not greater than 12 Ee (tension in plates, failure by fracture of rivets at splices)","unverified","C123303273",58,"https://archive.org/details/C123303273/page/n57",null,null,null,"Golden Gate Bridge seismic evaluation","n","a",0,-1.0],["f","dl-sf-facts-v1.1-haiku55-2026-10/C123303273:58/2",1990,1990,"","recommendation","study or report",null,"Golden Gate Bridge towers · other: total stress not greater than the calculated buckling stress or Fy, whichever is less (compression in plates)","unverified","C123303273",58,"https://archive.org/details/C123303273/page/n57",null,null,null,"Golden Gate Bridge seismic evaluation","n","a",0,-1.0],["f","dl-sf-facts-v1.1-haiku55-2026-10/C123303273:58/3",1990,1990,"","recommendation","study or report",null,"Golden Gate Bridge towers · other: nominal stress in a rivet shall not exceed its yield stress Fy (riveted connections)","unverified","C123303273",58,"https://archive.org/details/C123303273/page/n57",null,null,null,"Golden Gate Bridge seismic evaluation","n","a",0,-1.0],["f","dl-sf-facts-v1.1-haiku55-2026-10/C123303273:76/6",1990,1990,"","finding","study or report",null,"Golden Gate Bridge towers · finding: maximum transverse displacements in both towers were very similar","unverified","C123303273",76,"https://archive.org/details/C123303273/page/n75",null,null,null,"Golden Gate Bridge seismic evaluation","n","a",0,-1.0],["f","dl-sf-facts-v1.1-haiku55-2026-10/C123303273:81/1",1990,1990,"","building","study or report",null,"Golden Gate Bridge towers · other: maximum longitudinal shear through cable saddle, north tower","unverified","C123303273",81,"https://archive.org/details/C123303273/page/n80",null,null,null,"Golden Gate Bridge seismic evaluation","n","a",0,-1.0],["f","dl-sf-facts-v1.1-haiku55-2026-10/C123303273:81/2",1990,1990,"","finding","study or report",null,"Golden Gate Bridge towers · other: total longitudinal inertia force of the side span","unverified","C123303273",81,"https://archive.org/details/C123303273/page/n80",null,null,null,"Golden Gate Bridge seismic evaluation","n","a",0,-1.0],["f","dl-sf-facts-v1.1-haiku55-2026-10/C123303273:81/6",1990,1990,"","finding","study or report",null,"Golden Gate Bridge towers · other: yield stress level of the plate 50.5 ksi","unverified","C123303273",81,"https://archive.org/details/C123303273/page/n80",null,null,null,"Golden Gate Bridge seismic evaluation","n","a",0,-1.0],["f","dl-sf-facts-v1.1-haiku55-2026-10/C123303273:88/4",1990,1990,"","recommendation","study or report",null,"Golden Gate Bridge towers · recommendation: evaluate both towers based on the worst case","unverified","C123303273",88,"https://archive.org/details/C123303273/page/n87",null,null,null,"Golden Gate Bridge seismic evaluation","n","a",0,-1.0]]}