Arnold (1913) pg 268 - Typical cross-sections of tunnel (Fig 67).jpg
From Underfoot
Size of this preview: 690 × 600 pixels. Other resolutions: 276 × 240 pixels | 552 × 480 pixels | 858 × 746 pixels.
Original file (858 × 746 pixels, file size: 94 KB, MIME type: image/jpeg)
Summary
| Description |
English: Figure 67 - Typical cross-section of Mission-Sunset Tunnel. For construction through earth, in two stages if desired. Total width of bore, 42 feet; 30 feet roadway.
Figure 68 - Typical cross-section of combined traffic-transit tunnel. With provision for both surface and subway transit lines. Total width of bore, 60 feet; 24 ft. roadway. Corresponding to the design already submitted for the Broadway tunnel, except that the subway project is added. |
|||
| Date | ||||
| Source | Arnold, Bion J. (March 1913) "11. Market Street extension tunnel under Twin Peaks" in Report on the Improvement and Development of the Transportation Facilities of San Francisco, pp. 225–270 Retrieved on 17 April 2018. | |||
| Author | Uncredited illustrator(s), drafter(s), and photographer(s). First published by and generally credited to Bion Arnold | |||
| Other versions |
|
_pg_268_-_Typical_cross-sections_of_tunnel.jpg)
_pg_268_-_Typical_cross-sections_of_tunnel_(Fig_67).jpg){kind=link}
Licensing
|
This work is in the public domain in the United States because it was published (or registered with the U.S. Copyright Office) before January 1, 1930.
 Public domain works must be out of copyright in both the United States and in the source country of the work in order to be hosted on the Commons. If the work is not a U.S. work, the file must have an additional copyright tag indicating the copyright status in the source country.
|
File history
Click on a date/time to view the file as it appeared at that time.
| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 15:06, 27 July 2018 | | 858 × 746 (94 KB) | wikimediacommons>Mliu92 | File:Arnold (1913) pg 268 - Typical cross-sections of tunnel.jpg cropped 35 % horizontally, 66 % vertically using CropTool with precise mode. |
_pg_268_-_Typical_cross-sections_of_tunnel.jpg){kind=link}
File usage
There are no pages that use this file.
_pg_268_-_Typical_cross-sections_of_tunnel_(Fig_67).jpg){kind=link}