USEFUL DATA 



0.17 



0.16 



0.14 



0.13 



0.12 



0.11 



0.10 



0.06 



0.07 



0.06 



0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 



Values of k 



Diagram 8a 



Bending and direct stress. 



Values of coeflScient F in formula for obtaining extreme fibre stress /c=-^;^ 



L 



23 



