When calculating the dimensions of divisions loaded on one
                           side, using tables A 13-1 to
                           A 13-6, the following working stresses should be adopted:
                           
                        
                        
                        
                        
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For divisions of steel: 19.6 kN/cm2
                                 
                              
                              
                              
                            
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For divisions of wood: 1.57 kN/cm2
                                 
                              
                              
                              
                            
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(1 newton is equivalent to 0.102 kilograms).