(Ennsnlifcateb lExpantoii Urtal 



PITTSBURGH NEW YORK 



REGISTERED 



NEW YORK, May 1, 19 



We are herewith enclosing additional tables for stone 

 concrete, showing the safe working loads for * * Steelcrete" Expanded 

 Metal, based on the following stresses :- 



Concrete 650 Ibs . per sq. in. 

 Steel 16,000 " " " 



The Building Department of the Borough of Manhattan at present 



allows the above stresses in stone concrete, using a bending 



Wl Wl 



moment of for continuous spans and for simple spans. While 

 J.U o 



you will notice the enclosed tables are figured on a bending moment 



Wl Wl Wl 



of Yo > the safe loads figured on a bending moment of - or 



L<I y 10 



O ]A 



may be found by taking or of the loads given in the tables, 



J-<< \-(*j 



after adding the weight of the slab. 



43 



