PROCEEDINGS 



OF THE 



Delaware County Institute of Science 



Volume VIII Number 4 



STRESS LINES IX BEAMS OF UXSYMMETRICAL 

 CROSS SECTION. 



BY C. M. BROOM ALL. 



Following up the method already made use of in treating 

 of Stress and Strain in beams of symmetrical cross section,-'' 

 it is proposed in the present article to extend the same meth- 

 ods to beams of uns3'mmetrical cross section. As a typical 

 beam of this character, the Channel with web vertical will be 

 first considered. 



As a preliminary to the treatment of the Channel Beam, a 

 brief resume of a few of the facts brought out in the articles 

 mentioned may be useful. These facts may be summarized 

 as follows : — 



1. The horizontal unit shear at any point of the beam 

 is always accompanied by an equal right-angled vertical (or 

 transverse ) unit shear. 



2. The total horizontal shear at any point is equal to the 

 diiJerence between the horizontal forces acting on the two 



*" Stress and Strain." Proc. DeL Co. Inst. Sci. VoL VIII, No. i, 

 ^lay, 1916. 



"Stress and Deformation in the I Beam." Proc. Del. Co. Inst. Sci. 

 VoL VIII, No. 2, December, 1916. 



