16 

 15 



PT75 MAX CH3 



> 1 • 1 • 1 1 





14 



~ f 





13 



-1 





12 



-^^-^^^^ 





t 11 



^"'""""■^.^,.,^^ 





g 10 



^^^^^-^^^^^ 





1- 



^ . — -^ 





? 9 



UJ 



-1 Q 



LU O 



7 



t > 





6 

 5 

 4 

 3 



16 

 15 



k 



I.I.I. 





PT75 MAX CH4 



I 1 1 1 1 1 < 





14 



" r 





13 



- / 





12 



-t 





t: 11 



- 1 H 





g 10 



_ *^--._^.^^ 





? 9 



UJ 



UJ 8 



_^S^^^ : 





7 



4^ 





6 

 5 



: : 





4 

 3 



I.I.I. 







5 20 40 60 80 





PRESSURE, PSI 





INSTANTANEOUS WAVE PRESSURE DISTRIBUTION 





NORTHEASTER PT75 





SWL = +7.0 FT 





MAXIMUM PRESSURES ON CHANNELS 3 AND 4 



PLATE 14 



