SHAPES AND PLATES MOST EASILY OBTAINED. 417 



Channels. Channels which can be most readily obtained from the mills. 



Depth. Weight. 



6" 8 Ib. 



8" II Jib. 18} Ib. 



10" 15 Ib. 20 Ib. 25 Ib. 



12" 2oi Ib. 25 Ib. 30 Ib. 



15" 33 Ib. 40 Ib. 50 Ib. 



Sizes which may be used but for which prompt deliveries cannot be expected. 



Depth. Weight. 



5" 6i Ib. 



7" 9l Ib. 



9" I3i Ib. 



Channels of weights different than those given above can always be obtained at the mills 

 but not so readily as those given. Channels of minimum section can always be obtained more 

 readily than heavier sections. 



Angles. Angles most easily obtained from the mill. 

 Even legs. 2j" X 2*"; 3" X 3": 3i" X 3*"; 4" X 4": 6" X 6". 

 Uneven legs. 2\" X 2"; 3" X 2j"; 3*" X 3": 4" X 3"; 5" X 3*"; 6" X 4"- 

 Angles which may be used but for which prompt deliveries cannot be expected. 

 Even legs. 2" X 2"; 2!" X 2j"; 5" X 5"; 8" X 8". 

 Uneven legs. 3" X 2"; 3 J" X aj": 4" X 3*"; 6" X 3*". 

 Angles 4" X 3i"; 5" X 4"; 7" X 3*" and 8" X 6" are very difficult to obtain. 

 To obtain prompt deliveries as few sizes and shapes as practicable should be used for any 

 contract. For example if 6" X 4" angles are used 6" X 3$" should be avoided, and vice versa. 

 Tees. If possible the use of Tees should be confined to 3" X 3" X f " and 2" X 2" X A"i 

 and even these sizes are uncertain of delivery. 



Zees. The delivery of zees is uncertain and will depend upon special rollings, which do not 

 occur frequently. The following sizes are the most used, and are therefore most easily obtained. 

 Web. Thickness. 



3" i", A" and |" 



4" i", A" and |" 



5" A", I" and \" 



6" f", i", f", |", I" and i" 



Stock Material. The Pennsylvania Steel Company carries the following material in stock 

 in 30 ft. lengths for use in its structural plant. 



Angles, Even Legs. Angles, Uneven Legs. 



6" X 6" X A" and \" 6" X 4" X |", A" and i" 



4" X 4" X |" and A" 5" X 3*" X f", A" and \" 



3*" X 3i" X |" and A" 4 " X 3 i" X A" and \" 



3" X 3" X A", I" and A" 3*" X 3" X A" and |" 



3" X 2i" X A" and |" 



Plates. Flats. 



20" XI" and J" 7"Xi" 



1 8" X I" and i" 6" X I" and i" 



16" X I" and i" 3$" X I", i" and f" 



15" X I" and i" 3" X f" and A" 



14" X |" and \" 2 J" X |" and A" 



13" X I" and i" 2i" X A" and |" 



12" X |", A" and V 2" X 1" and A" 



10" X i" and A" 

 9" X |" 

 28 



