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San Francisco Bridge Company
Excavating Irrigation Canal
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San Francisco Bridge Company; New York Dredging Company. San Francisco Bridge Company - Excavating Irrigation Canal. 1898. Kenneth Franzheim II Rare Books Room, William R. Jenkins Architecture and Art Library, University of Houston Libraries. University of Houston Digital Library. Web. October 19, 2021. https://digital.lib.uh.edu/collection/aapamphlets/item/1443/show/1403.

Disclaimer: This is a general citation for reference purposes. Please consult the most recent edition of your style manual for the proper formatting of the type of source you are citing. If the date given in the citation does not match the date on the digital item, use the more accurate date below the digital item.

San Francisco Bridge Company; New York Dredging Company. (1898). San Francisco Bridge Company - Excavating Irrigation Canal. Architectural Retail Catalog Collection. Kenneth Franzheim II Rare Books Room, William R. Jenkins Architecture and Art Library, University of Houston Libraries. Retrieved from https://digital.lib.uh.edu/collection/aapamphlets/item/1443/show/1403

Disclaimer: This is a general citation for reference purposes. Please consult the most recent edition of your style manual for the proper formatting of the type of source you are citing. If the date given in the citation does not match the date on the digital item, use the more accurate date below the digital item.

San Francisco Bridge Company; New York Dredging Company, San Francisco Bridge Company - Excavating Irrigation Canal, 1898, Architectural Retail Catalog Collection, Kenneth Franzheim II Rare Books Room, William R. Jenkins Architecture and Art Library, University of Houston Libraries, accessed October 19, 2021, https://digital.lib.uh.edu/collection/aapamphlets/item/1443/show/1403.

Disclaimer: This is a general citation for reference purposes. Please consult the most recent edition of your style manual for the proper formatting of the type of source you are citing. If the date given in the citation does not match the date on the digital item, use the more accurate date below the digital item.

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Compound Item Description
Title San Francisco Bridge Company
Alternative Title San Francisco Bridge Company: New York Dredging Company: civil engineers and contractors for railway and highway bridges, piers, docks, dredging and harbor improvement,flumes, dams, pipe lines, coal bunkers, structural iron and steel work: [prospectus].
Creator (LCNAF)
  • San Francisco Bridge Company
  • New York Dredging Company
Publisher Chasmar-Winchell Press
Date 1898
Description A 56-page booklet published in 1898 called “Civil Engineers and Contractors for Railway and Highway Bridges, Piers, Docks, Dredging and Harbor Improvement, Flumes, Dams, Pipe Lines, Coal Bunkers, Structural Iron and Steel Work” by the San Francisco Bridge Company and New York Dredging Company based out of its namesake company titles. Content includes texts and accompanying images on specific lighthouses, piers, bridges, canals, hydraulic dredges, irrigation canals, coal-handling plants, ports, and flumes.
Subject.Topical (LCSH)
  • Bridges
  • Dredges
Subject.Topical (Local)
  • civil engineers
  • dams
  • engineering
  • ports
  • canals
  • piers
  • bridges
Subject.Name (LCNAF)
  • San Francisco Bridge Company
  • New York Dredging Company
Genre (AAT)
  • pamphlets
  • catalogs (documents)
Language English
Type (DCMI)
  • Text
  • Image
Original Item Location TG157 .S35 1898
Original Item URL http://library.uh.edu/record=b5707192~S11
Digital Collection Architecture Retail Catalog Collection
Digital Collection URL http://digital.lib.uh.edu/collection/aapamphlets
Repository Kenneth Franzheim II Rare Books Room, William R. Jenkins Architecture and Art Library, University of Houston Libraries
Repository URL http://info.lib.uh.edu/about/campus-libraries-collections/william-r-jenkins-architecture-art-library
Use and Reproduction This image is in the public domain and may be used freely. If publishing in print, electronically, or on a website, please cite the item using the citation button.
File Name index.cpd
Item Description
Title Excavating Irrigation Canal
Format (IMT)
  • image/jpeg
File Name aapam_201301_009_018.jpg
Transcript Excavating Irrigation Canal The cut on the opposite page represents our Patent Canal Excavator at work on the main canal of the Central Irrigation District in Colusa County, California. The section of this canal constructed by this Company with this machine was about six miles long, sixty feet wide on the bottom, and one hundred feet wide on the top, and from ten to twenty feet deep, averaging about fifteen feet deep. This canal was through the table land of the Sacramento Valley, and is to take water from the Sacramento River at low water to irrigate about 156,000 acres of land in Glenn and Colusa counties. From the bottom of the canal to the top of the spoil bank on either side, in some sections, it was thirty-five feet. On top the material was loam, and the bottom and middle strata were hard, cemented gravel and hardpan. The water table of the country for most of the year lay some two feet above the bottom of this canal, rendering it impossible to drain the bed of the canal; this led to the designing of this machine, which is supported on the banks on either side on a railroad track, as, owing to the presence of water in the canal, it was impossible to support it on the bottom of the ditch. This machine has a capacity of about 4,000 cubic yards per day. It will be noticed that the spoil banks are placed away from the ditch, leaving a clean berme about twelve feet wide, thus avoiding the loading of the immediate canal banks, and enabling them to be economically designed for a steeper angle of slope. The spoil in this case was delivered on both sides, but it can be arranged so as to deliver the spoil all on one side. From the cut it will be seen that the Excavator travels transverse the ditch on a car, supported by the bridge which spans the canal, and the material is carried on either side by a belt conveyor—first on one side and then on the other; as the machine passes the center a tilting bottom in the hopper delivers the excavated material first to one conveyor and then to the other, while the whole machine is carried forward longitudinally with the ditch by means of the cars on which it rests on either bank. All these movements of the machine are controlled by one leverman, who may be seen in the cut standing on the platform on the left of the bucket; he has control of five separate levers, one for raising and lowering the bucket chain, one for moving the car to the right, and another for moving the car to the left, and another for moving it forward on the side tracks, and the fifth controls the engine. The rapidity and facility with which all these movements are made is surprising, especially when you take into consideration the momentum and immense weight of the car and bridge and the Excavator's machinery, which is about 300 tons. As the machine excavates the ditch the track is taken up behind and relaid in front. This machine is a wonderfully successful and economical machine for the excavation of canals.