Lin, Paulling, and Wehausen 



With regard to the unaesthetic aspect of our wavy forms we are pleased to 

 report the following. Since the forms from which the tested models were made 

 were computed, we have extended the computations from Mxp = 6x6 toMxp = 

 10x4, 12x4 and 15x4 for the symmetric model. The numerical evidence sug- 

 gests that the 15 x 4 form is already quite close to the limit with P = 4. The im- 

 provement in resistance is negligible. However, there is a quite noticeable 

 change in form as one proceeds from 6x4 to 15x4, and, although the latter form 

 is no longer wavy, it does not "smooth" the wavy lines of a 6x4 form, and it 

 would have been misleading, if not even somewhat dishonest, to have drawn 

 smooth curves through the wavy ones on this basis. It may be of interest to note 

 the following. In going from 6x4 to 10 x 4 the beam decreases, the middle sec- 

 tions become more U-shaped and the ends much bulbier. In going from 10x4 to 

 15x4 the middle sections remain practically the same, but the bulbiness con- 

 tinues to increase, although the difference between 12x4 and 15x4 is slight. If 

 one keeps M fixed at 10 and lets P be successively 2, 3, and 4, the section-area 

 curve hardly changes, the sections near the ends change little, but the middle 

 sections become more U-shaped. 



The authors thank the discussers for their interest in and comments on 

 their paper. 



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