

Table II. 



Time Required to 



Assemble Ram 



System 





Threade 



d Connections 



Pinned Joint 



Diver 



Assembly 

 Time (Min) 



Inches Short of 

 60-Inch Span 



Assembly 

 Time (Min) 



Inches Short of 

 60-Inch Span 



1 



2.5 



4 



3.4 



2 



2 



1.0 



4 



2.1 



5 



3 



3.7 



5 



7.6 



6 



4 



2.3 



5 



2.9 



6 



Mean 



2.2 



4.5 



4.0 



4.8 



The times for the divers to extend the 10-inch stroke ram against 

 various loads are shown in Table III. These times are for ram extensions 

 with the pull stroke hydraulic pump (Figure 6) and do not include any 

 assembly time. 



Table III. Times Required for Divers to Extend Ram 



Load on 

 Ram (Tons) 



Hydraulic 

 Pressure at 

 Ram (psi) 



Mean Time for 10" 

 Ram Extension (Min) 



Range of 

 Extension 

 Times (Min) 



1 



900 



3.2 



2.5 to 3.6 



2 



1800 



3.6 



2.9 to 4.3 



3 



2700 



3.8 



3.5 to 4.1 



4 



3600 



4.0 



2.9 to 4.5 



The three ram end connections in Figure 15 were tested underwater 

 to determine the maximum loads they would support without slipping. A 

 diver placed the ram assembly between the two ends of the load cell. 

 One end of the load cell was always vertical. The other end was varied 

 from a parallel position to a slope of 30 from parallel (see Figure 16) . 



15 



