Unclassified 



iGE(When Dala Enit 



20. Continued 



for thin-walled cylinders, where new data on 15 relatively large-scale specimens are 

 reported. Design guides for thin-walled cylinders show an increase in implosion strength 

 ranging from 0% to 35%, depending on the structures' t/D^ and L/Dq ratios, from that 

 reported previously. 



Library Card 



Civil Engineering Laboratory 



DESIGN FOR IMPLOSION OF CONCRETE CYLINDER 

 STRUCTURES UNDER HYDROSTATIC LOADING, 

 by Harvey H. Haynes 



TR-874 85 pp illus Aug 1979 Unclassified 



1. Concrete cylinders 2. Hydrostatic loadings I. 3.1610-1 



This report presents updated design guides for both thick- and thin-walled concrete 

 cylinder structures under hydrostatic loading. The design approach for thick-walled cylinders 

 has been changed from that described in previous work to a semi-empirical basis; improve- 

 ments in implosion strength on the order of 10% are found. A test on a thick-walled 10-ft- 

 diam (3.05-m) structure loaded to failure in the ocean is reported. A major change in the 

 guides is for thin-walled cylinders, where new data on 1 5 relatively large-scale specimens are 

 reported. Design guides for thin-walled cylinders show an increase in implosion strength rang- 

 ing from 0% to 35%, depending on the structures' t/D^ and L/D^ ratios, from that reported 

 previously. 



Unclassified 



CATION OF THIS PAGECH'/ien Da 



