. The Bell System technical journal . F= 10 LBS/IN = 120 LBS/FT MOMENT DISTRIBUTION. M = -y(:^-SlNe)=ANALYTICAL MOMENT DISTRIBUTION = Mi = -g-h^E£i =EXPERIMENTAL MOMENT DlSTRlBUTlON=0 Fig. 4 — Analytical and momoiit distrihiition in a thin-walledtube under two-point load. 744 THE BELL SYSTEM TECHNICAL JOURNAL, MAY 1957 BEDDING EFFECT Based on the theoretical considerations illustrated in Figs. 5 and 6,comparison of Figs. 7 and 8 indicates a high load concentration at thebottom of the tube buried in a trench with clay backfill. For a verifica-tion of this assumption, a series of a
. The Bell System technical journal . F= 10 LBS/IN = 120 LBS/FT MOMENT DISTRIBUTION. M = -y(:^-SlNe)=ANALYTICAL MOMENT DISTRIBUTION = Mi = -g-h^E£i =EXPERIMENTAL MOMENT DlSTRlBUTlON=0 Fig. 4 — Analytical and momoiit distrihiition in a thin-walledtube under two-point load. 744 THE BELL SYSTEM TECHNICAL JOURNAL, MAY 1957 BEDDING EFFECT Based on the theoretical considerations illustrated in Figs. 5 and 6,comparison of Figs. 7 and 8 indicates a high load 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 t
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Keywords: ., bookcentury1900, bookdecade1920, booksubjecttechnology, bookyear1
