. The Bell System technical journal . d concentration at thebottom of the tube buried in a trench with clay backfill. For a verifica-tion of this assumption, a series of additional tests were conducted. Thetest tube was placed upon (a) a flat steel plate and then covered withmoist clay, (b) a flat steel plate and then covered with dry sand, and(c) carefully distributed moist clay and then covered with clay. Theexternal load was then applied. The moment distributions obtained forcases (a), (b), and (c) are shown in Figs. 9, 10 and 11, respectively. A comparison of the data presented in Figs. 9
. The Bell System technical journal . d concentration at thebottom of the tube buried in a trench with clay backfill. For a verifica-tion of this assumption, a series of additional tests were conducted. Thetest tube was placed upon (a) a flat steel plate and then covered withmoist clay, (b) a flat steel plate and then covered with dry sand, and(c) carefully distributed moist clay and then covered with clay. Theexternal load was then applied. The moment distributions obtained forcases (a), (b), and (c) are shown in Figs. 9, 10 and 11, respectively. A comparison of the data presented in Figs. 9 and 11 shows the effectof the bedding condition on the moment distribution (steel plate versusclay bedding). These data, as well as theoretical considerations (Figs. 5and 6), indicate that the bedding condition affects mainly the bendingmoment at the bottom of the tube and only to a lesser degree the bend-ing moment at right angles to the vertical axis. Due to a change in 1 • M n r ! ! !! J LJ^ =. J J LOAD DISTRIBUTION P = PSI. ttnntttttttttttittt p-2-«ps. ? 6 X 4 m u 02O1-2 e> z5-4 2UJ <^-6 MOMENT DISTRIBUTION
Size: 1926px × 1298px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1920, booksubjecttechnology, bookyear1
