and
can be found by elimination. In conclusion, the writer believes that he has offered a satisfactory and comprehensive theory of earth pressure, for earth endowed with both cohesion and friction. The results are not on as satisfactory a basis for pressures on tunnels, but the formulas derived are submitted in the hope that engineers will subject them to the test of both experience and experiment.
The writer returns sincere thanks to Messrs. Worcester and Meem for their helpful and stimulating discussion.
[Footnote 21:] [Page 426.]] [Return to text]
[Footnote 22:] “The Bracing of Tunnels and Trenches, with Practical Formulas for Earth Pressures,” Transactions, Am. Soc. C. E., Vol. LX, p. 1; and “Pressure, Resistance, and Stability of Earth,” Transactions, Am. Soc. C. E., Vol. LXX, p. 352.] [Return to text]
[Footnote 23:] Transactions, Am. Soc. C. E., Vol. LX, p. 1.] [Return to text]
[Footnote 24:] Transactions, Am. Soc. C. E., Vol. LXX, p. 352.] [Return to text]
[Footnote 25:] See the writer’s “Retaining Walls,” sixth edition, p. 132.] [Return to text]