American engineer and railroad journal (1893) (14574288050)

Identifier: americanengine70newy (find matches)
Title: American engineer and railroad journal
Year: 1893 (1890s)
Authors:
Subjects: Railroad engineering Engineering Railroads Railroad cars
Publisher: New York : M.N. Forney
Contributing Library: Carnegie Library of Pittsburgh
Digitizing Sponsor: Lyrasis Members and Sloan Foundation

View Book Page: Book Viewer
About This Book: Catalog Entry
View All Images: All Images From Book
Click here to view book online to see this illustration in context in a browseable online version of this book.

Text Appearing Before Image:
UJ a oo X <111 0. < H(0 ■< < z >-w zz a zO XCO bl > I-O lUQ.lO ccwa. I O AND RAILROAD JOURNAL. 97
Text Appearing After Image:
I■<» ^ UJ zz HO z-< m 3CO z_l>- CO zzllJQ. CO zo HOiijCO a z< o cr z< o 98 AMERICAN ENGINEER, CAR BUILDER carried over the subway at Twenty-seventh, Twenty-eighth and Twenty-ninth streets. In Figs. 2, 3 and 4 are given sections that are each typical ofthe masonry work. The tunnel section we have already alludedto; the dimensions of the retaining walls are given in Fig. 4; ifat any point it is of greater height than shown the wall is carrieddown with steps of 18 inches every 4 feet as shown. The sectionof a bridge abutment is likewise typical. The section showingthe relation between the retaining wall and the foundation ofadjacent buildings that must be under-pinned during construc-tion is only one selection from many cases. In some instancesthe entire front of buildings must be removed and rebuilt. Theretaining walls are to be built in an open trench, and are to be ofrubble masonry laid in Portland cement (1 part cement to 3 partssand), with a coping

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.