IN THI S AREA - 



OUTSIDE IN COMPRESSION 



INSIDE IN TENSION 



CENTERLINE 



DEFLECTED SHAPE' 

 EXAGGERATED 



PRESSURE LOADING 

 ON BOTTOM 



IN THIS AREA - 

 OUTSIDE IN TENSION 

 INSIDE IN COMPRESSION 



a. UNSTIFFENED 



IN THIS AREA - 



OUTSIDE IN COMPRESSION 



INSIDE IN TENSION 



IN THIS AREA . 

 OUTSIDE IN TENSION 

 INSIDE IN COMPRESSION 



DEFLECTED SHAPE 

 EXAGGERATED 



ORIGINAL SHAPE 



PRESSURE LOADING 

 ON BOTTOM 



b. STIFFENED 



Fig. 2-10. Tensile and compressive 

 stresses in a boat shell 



SECTION MODULUS AT THE INBOARD FACE 

 FOR 1" WIDTH OF LAMINATE - INCHES 3 



NOTE! COST BASED ON PRICES AS OF JUNE 1959. 



CURRENT FIGURES SHOULD BE USED FOR ACCURATE ESTIMATES. 



SECTION MODULUS AT THE INBOARD FACE 

 FOR 1" WIDTH OF LAMINATE - INCHES 3 



Fig. 2-11. Cost versus strength of contact Fig. 2-12. Weight versus strength of contact 

 molded fiberglass - polyester laminates molded fiberglass - polyester laminates 



2-10 



