{"id":null,"ids":[],"kind":"named in documents","name":"Golden Gate Bridge stiffening truss connections","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/C124899442:29/1",1962,1962,"","finding","study or report",null,"Golden Gate Bridge stiffening truss connections · finding: No fatigue advantage with higher strength steels at 2,000,000 or more cycles","unverified","C124899442",29,"https://archive.org/details/C124899442/page/n28",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/C124899442:29/2",1962,1962,"","finding","study or report",null,"Golden Gate Bridge stiffening truss connections · finding: Fatigue resistance at 2,000,000 or more cycles corresponds to a stress fluctuation of approximately 20,000 psi","unverified","C124899442",29,"https://archive.org/details/C124899442/page/n28",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/C124899442:29/3",1962,1962,"","finding","study or report",null,"Golden Gate Bridge stiffening truss connections · finding: Fatigue resistance at 100,000 cycles for silicon steel: total fluctuation approximately 30,000 to 35,000 psi","unverified","C124899442",29,"https://archive.org/details/C124899442/page/n28",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/C124899442:29/4",1962,1962,"","finding","study or report",null,"Golden Gate Bridge stiffening truss connections · finding: Fluctuations corresponding to less than about 15,000 psi for any cycle would have no influence on endurance","unverified","C124899442",29,"https://archive.org/details/C124899442/page/n28",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/C124899442:29/5",1962,1962,"","finding","study or report",null,"Golden Gate Bridge stiffening truss connections · finding: Stress fluctuations above 40,000 psi would occur rarely, possibly not as often as several times per year (rapid transit loading estimate)","unverified","C124899442",29,"https://archive.org/details/C124899442/page/n28",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/C124899442:29/6",1962,1962,"","finding","study or report",null,"Golden Gate Bridge stiffening truss connections · finding: Stress fluctuations of 25,000 to 30,000 psi might occur several times per month (rapid transit loading estimate)","unverified","C124899442",29,"https://archive.org/details/C124899442/page/n28",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/C124899442:29/7",1962,1962,"","finding","study or report",null,"Golden Gate Bridge stiffening truss connections · finding: Stress fluctuations of 20,000 to 25,000 psi might occur about ten times per day (rapid transit loading estimate)","unverified","C124899442",29,"https://archive.org/details/C124899442/page/n28",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/C124899442:29/8",1962,1962,"","finding","study or report",null,"Golden Gate Bridge stiffening truss connections · finding: Stress fluctuations of 10,000 to 20,000 psi might occur 100 to 200 times per day (rapid transit loading estimate)","unverified","C124899442",29,"https://archive.org/details/C124899442/page/n28",null,null,null,"Report on proposed installation of rapid transit trains on Golden Gate Bridge","n","a",0,-1.0]]}