Golden Gate Bridge towers
Named in the records1962–1990
23 records of San Francisco tie this place, 1962–1990: 0 decisions of the Board of Supervisors and 23 facts read from city reports. Open the full list, with filters for years, kind and outcome.
- Kind
- Named in the records
- Records
- 23: 0 Board decisions, 23 facts from city reports
- Years
- 1962–1990
What the records say
All 23 records, in date order. The one-line summaries were written by a language model from the printed page; open the page to check the wording.
| When | What the record says | Outcome | Source |
|---|---|---|---|
| 1962 | Golden Gate Bridge towers · other: static wind pressure 50 lbs. per sq. ft. on exposed area of towers | project | City report: Report on proposed installation of rapid transit trains on Golden Gate Bridge scanned page ↗ |
| 1962 | Golden Gate Bridge tower shafts · finding: Gronquist concludes the towers will require no reinforcing for the addition of rapid transit | finding | City report: Report on proposed installation of rapid transit trains on Golden Gate Bridge scanned page ↗ |
| 1962 | Golden Gate Bridge tower shafts · finding: Reinforcing of tower shafts to bring stresses within permissible limits would be impracticable | finding | City report: Report on proposed installation of rapid transit trains on Golden Gate Bridge scanned page ↗ |
| 1962 | Golden Gate Bridge roadway profile · finding: appreciable and objectionable changes in roadway profile with sharp kinks at the towers | finding | City report: Report on proposed installation of rapid transit trains on Golden Gate Bridge scanned page ↗ |
| 1982 | Abdel-Ghaffar and Scanlan vibration measurements · other: identified 12 vibration modes in each tower | finding | City report: Golden Gate Bridge seismic evaluation scanned page ↗ |
| 1990 | Golden Gate Bridge towers · finding: earthquake effect equivalent to static horizontal force of 3.75% of tower weight | finding | City report: Golden Gate Bridge seismic evaluation scanned page ↗ |
| 1990 | Golden Gate Bridge towers · finding: flexibility of steel towers reduces initial acceleration to about half | finding | City report: Golden Gate Bridge seismic evaluation scanned page ↗ |
| 1990 | Golden Gate Bridge towers · finding: towers firmly anchored to piers; no danger of movement of tower bases | finding | City report: Golden Gate Bridge seismic evaluation scanned page ↗ |
| 1990 | Golden Gate Bridge towers · finding: outer cells of towers would buckle in compression and yield or fracture at splice plates in tension | finding | City report: Golden Gate Bridge seismic evaluation scanned page ↗ |
| 1990 | Golden Gate Bridge towers · finding: review found misinterpretations in Baron's buckling strength assumptions and stress calculations | finding | City report: Golden Gate Bridge seismic evaluation scanned page ↗ |
| 1990 | Golden Gate Bridge towers · finding: tower stresses would be considerably below those reported by Baron, within acceptable levels | finding | City report: Golden Gate Bridge seismic evaluation scanned page ↗ |
| 1990 | Golden Gate Bridge towers · recommendation: no structural modifications of the towers be considered and no further action be taken | recommendation | City report: Golden Gate Bridge seismic evaluation scanned page ↗ |
| 1990 | Golden Gate Bridge towers · other: horizontal riveted splice joints at about SO ft intervals over tower height | building | City report: Golden Gate Bridge seismic evaluation scanned page ↗ |
| 1990 | Golden Gate Bridge towers · finding: horizontal splice rivets designed to resist one half the yield capacity of the joined plates | finding | City report: Golden Gate Bridge seismic evaluation scanned page ↗ |
| 1990 | Golden Gate Bridge towers · finding: compression failure mode is buckling, potentially non-ductile | finding | City report: Golden Gate Bridge seismic evaluation scanned page ↗ |
| 1990 | Golden Gate Bridge towers · other: total stress not greater than 12 Ee (tension in plates, failure by fracture of rivets at splices) | recommendation | City report: Golden Gate Bridge seismic evaluation scanned page ↗ |
| 1990 | Golden Gate Bridge towers · other: total stress not greater than the calculated buckling stress or Fy, whichever is less (compression in plates) | recommendation | City report: Golden Gate Bridge seismic evaluation scanned page ↗ |
| 1990 | Golden Gate Bridge towers · other: nominal stress in a rivet shall not exceed its yield stress Fy (riveted connections) | recommendation | City report: Golden Gate Bridge seismic evaluation scanned page ↗ |
| 1990 | Golden Gate Bridge towers · finding: maximum transverse displacements in both towers were very similar | finding | City report: Golden Gate Bridge seismic evaluation scanned page ↗ |
| 1990 | Golden Gate Bridge towers · other: maximum longitudinal shear through cable saddle, north tower | building | City report: Golden Gate Bridge seismic evaluation scanned page ↗ |
| 1990 | Golden Gate Bridge towers · other: total longitudinal inertia force of the side span | finding | City report: Golden Gate Bridge seismic evaluation scanned page ↗ |
| 1990 | Golden Gate Bridge towers · other: yield stress level of the plate 50.5 ksi | finding | City report: Golden Gate Bridge seismic evaluation scanned page ↗ |
| 1990 | Golden Gate Bridge towers · recommendation: evaluate both towers based on the worst case | recommendation | City report: Golden Gate Bridge seismic evaluation scanned page ↗ |
All 23 records, with filters · this place's data as JSON · release v0.7.1 · CC0 1.0