189
TRUSSES
Influence lines for truss obtained by graphics, by R. C. Veit. Civil engineering, New York, July 1935, v. 5, p- 429-30.
The Application of photoelasticity to the study of indeterminate truss-stresses, by D.L.Pellett. S.A.E. journal, New York, Dec. 1932, v. 31, no. 6, p. 469-74. illus., tables. (Al5o Western flying, Los Angeles, Cal., Aug. 1932, v. 44-45) (Abstract Aircraft engineering, London, May 1932, v. 4,
p.128)
Cross* method applieci to secondary stresses (analysis of 150 ft. truss by determining fixed-end moments from Williet diagrams and adjusting these moments by method of H. Cross), by F.P. Witmer. Engineering news-record, New York, Jan. 28, 1932, v. 108, no. 4, p. 132-33. diagrs.
Analysis of shailow truss spars, by A.S. Miles. Airv;ay age,
New York, Aug. 1, Sep. 5, Oct. 3, 1931, v. 13, no. 5, 10,
14, p. 114-16; 199-201, 224; 267-70, 304. diagrs., illus.
Metal-truss wing spars (spars subjected to combined bending and compression stresses), by A. E. Sv/ickard. Washington,
1931. 31 p. diagrs. (N.A.C.A. Technical notes no. 383)
Knickfestigkeit der pfosten von K- fachwerken, von K. Girkmann. Zeitschrift des V.D.I., Berlin, Apr. 27, 1929, v. 73, no. 17, p. 573-74. diagrs.
Graphical design of trussed beams by the method of complex
curves, by G.M. Kovelman. Vestnik ingenerov supplement, Moscow, 1929, p. 1-5. diagrs. (in russian)
The Computation of truss deflections by the method of elastic
weights, by A.S. Niles. Washington, U.S. Govt. print. off., 1928. 16 p. illus., tables. (Air corps Information circu-
lar no. 620)
Design of trussed metal spars for single bay airplanes, by E.C. Friel. Washington, U.S. Govt. print. off., 1928. 40 p.
diagrs., illus., tables. (Air corps information cireular no. 621)
Trussed girders, by N. Tatę. Mechanical world, Manchester, England, Aug. 1926, v. 80, no. 2066, p. 99-100. illus.
Wing-spar stress charts and wing-truss proportions, by Edward P. Warner. Washington, U.S. Govt. print. off., 1925.
18 p. diagrs. (N.A.C.A. Report no. 214)
Die Knickkraft gegliederter stUbe, von P. Stephan. Zentralblatt der bauverwaltung, Berlin, Aug. 8, 1923, v. 43, no. 63-64, p. 378-80. illus.