File:Twin Peaks Tunnel (double tube flat top section, east end)2.svg

Original file (SVG file, nominally 3,900 × 2,440 pixels, file size: 959 bytes)

Summary

Description
English: Cross-section view of the Twin Peaks Tunnel, eastern end. Redrawn from plans published in 1916. Scale 10px = 1"
Date
Source Own work, redrawn from Glick, L. (21 June 1916). "Method and Progress of Construction of the Twin Peaks Tunnel In San Francisco, Cal.". Building and Engineering News 16 (24): 5–13. Retrieved on 24 July 2018.
Author Mliu92
Other versions This file was derived from: B&EN v16 no 24 fig03 pg06 (1916-06-24) Double Tube - Flat Top Section.jpg

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25 July 2018

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Date/TimeThumbnailDimensionsUserComment
current14:40, 25 July 2018Thumbnail for version as of 14:40, 25 July 20183,900 × 2,440 (959 bytes)Mliu92User created page with UploadWizard

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