A few nice construction images I found:
Image from page 284 of “Handbook of railroad construction; for the use of American engineers. Containing the necessary rules, tables, and formulæ for the location, construction, equipment, and management of railroads, as built in the United States ..” (18
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Identifier: handbookofrailro00vose
Title: Handbook of railroad construction; for the use of American engineers. Containing the necessary rules, tables, and formulæ for the location, construction, equipment, and management of railroads, as built in the United States ..
Year: 1857 (1850s)
Authors: Vose, George L. (George Leonard), 1831-1910
Subjects: Railroads — Design and construction Railroads — Equipment and supplies Railroads — United States Equipment
Publisher: Boston, Cambridge : J. Munroe and Company
Contributing Library: University of Illinois Urbana-Champaign
Digitizing Sponsor: University of Illinois Urbana-Champaign
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Text Appearing Before Image:
260 HANDBOOK OF RAILROAD CONSTRUCTION. Fig. 135.
Text Appearing After Image:
277. The wei^rht of the different earths and stones are shown in the following table. Name of material. Brick, common Brick, stock Brickwork, (average,) Chalk, Granite, Marble, Mortar, (hair,) dry Puzzolano, Slate, Stone, (average,) Clay, (common,) Clay and gravel. Earth, common. Gravel, Quick-lirae, Quartz sand. Common sand. Shingle, Earth, loose Stone work, (hewn,) in wall, Stone work, (unhewn,) in wall, Weight per cubic foot. 97 to 125115 to 135 90 to 95144 to 166164 to 187111 to 117 80 to 86160 to 178157 to 180140 to 150110 to 125150 to 170 95 to 126100 to 110 50 to 55170 to 175 88 to 93 88 to 92 90 to 95160 to 175125 to 140 CHAPTER XII. FOUNDATIONS. 278. Foundations may be divided into four classes. Those on firm dry land. Those on unfirm dry land. Those on solid bottom, under water. Those on unfirm bottom, under water. Foundations upon firm dry land require only to be placedat a sufficient depth to be out of the way of frost; varyingfrom one foot in the Southern, to two and thre
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Image from page 169 of “Handbook of railroad construction; for the use of American engineers. Containing the necessary rules, tables, and formulæ for the location, construction, equipment, and management of railroads, as built in the United States ..” (18
I sit next to my sleeping buying this levitra prescription dog, close my eyes and pet the sleeping dog.
Image by Internet Archive Book Images
Identifier: handbookofrailro00vose
Title: Handbook of railroad construction; for the use of American engineers. Containing the necessary rules, tables, and formulæ for the location, construction, equipment, and management of railroads, as built in the United States ..
Year: 1857 (1850s)
Authors: Vose, George L. (George Leonard), 1831-1910
Subjects: Railroads — Design and construction Railroads — Equipment and supplies Railroads — United States Equipment
Publisher: Boston, Cambridge : J. Munroe and Company
Contributing Library: University of Illinois Urbana-Champaign
Digitizing Sponsor: University of Illinois Urbana-Champaign
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About This Book: Catalog Entry
View All Images: All Images From Book
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Text Appearing Before Image:
WOODEN BRIDGES. 145
Text Appearing After Image:
either very long, or ^^ ^• very large, from thesmall angle of in-clination; evilswhich are reme-died as before, bysupporting the postc B, fig. 64, fromthe foot of the first rod, fig, 64, and commencing againfrom c. To prevent the motion of the triangle c B G, fig. 64,about the angle B, we must introduce either the upperchord c c\ or the counter rod c A. If the lower chord isomitted the rod D B must be of the same size as E B. Inthis truss, either the top or the lower chord simply maytheoretically be omitted, due allowance being made in thesize of the rods. In practice it is never advisable to omiteither, as both are required for lateral bracing, and for sup-port of the road-way. Having said thus much of the general ideas that applyto all bridges, let us now look at some of the plans most inuse; and to become familiar with the subject, work out thedimensions of an example of each kind, 178. As rods, nuts, and washers are used in all bridges,the following table may not be out of place
Note About Images
Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability – coloration and appearance of these illustrations may not perfectly resemble the original work.