AN ANALYSIS OF TESTS OF WATER-TIGHT BULKHEADS. 99 



The bars given in Table II are partly those manufactured by the 

 Carnegie Steel Company, partly the Standard British Sections. 



The use of the tables is simple. Corresponding to the given values of 

 /, h and s, the required section modulus is found from Table I, and the 

 most appropriate stiffener can then readily be selected from Table II. 



In Table I is also given the thickness of the bulkhead plating, the 

 figures referring to the upper and lower strakes. Intermediate strakes 

 should in general be increased one pound or ^ of an inch for each strake 

 going downward, depending of course on the width of the strakes. 



Plate 32 shows the application of the tables to some typical bulkheads. 



In concluding this paper I wish to acknowledge my indebtedness to 

 the successive Chief Constructors of the United States Navy : Rear- Admiral 

 F. T. Bowles, Rear-Admiral W. L. Capps, and Rear-Admiral R. M. Watt, 

 for having so generously placed at my disposal, during the last eight years, 

 the results of bulkhead tests carried out in the United States Navy, and 

 for having permitted their publication. 



To Mr. Henry H. W. Keith, S. B., and to Mr. K. T. Blood, S. B., of 

 the Massachusetts Institute of Technology, my thanks are due for their 

 assistance in the comprehensive numerical and graphical work involved in 

 the paper. 



