46 STANDARD SPECIFICATIONS 



steel differing f in. and more in thickness is rolled from one melt 

 a test shall be made from the thickest and thinnest material 

 rolled. 



185. Finish. Finished material shall be free from injurious 

 seams, flaws, cracks, defective edges, or other defects, and have 

 a smooth, uniform, and workmanlike finish. Plates 36 in. in 

 width and under shall have rolled edges. 



1 86. Stamping. Every finished piece of steel shall have 

 the melt number and the name of the manufacturer stamped 

 or rolled upon it. Steel for pins and rollers shall be stamped 

 on the end. Rivet and lattice steel and other small parts 

 may be bundled with the above marks on an attached metal 

 tag. 



187. Defective Material. Material which, subsequent to the 

 above tests at the mills, and its acceptance there, develops weak 

 spots, brittleness, cracks or other imperfections, or is found to 

 have injurious defects, will be rejected at the shop and shall be 

 replaced by the manufacturer at his own cost. 



1 88. Allowable Variation in Weight (when ordered to weight). 

 A variation in cross-section or weight of each piece of steel of 

 more than 2J per cent from that specified will be sufficient cause 

 for rejection, except in case of sheared plates, which will be 

 covered by the following permissible variations applying to single 

 plates only: Plates under 12 Ibs. per sq.ft. 



(a) Up to 75 in. wide, 2 per cent above and below the pre- 

 scribed w r eight. 



(6) 75 in. and up to 100 in. wide, 5 per cent above or 3 per 

 cent below. 



(c) 100 in. wide and over, 10 per cent above or 3 per cent 



below. 

 Plates 12^ Ibs. per sq.ft. or heavier. 



(d) Up to 100 in., 2J per cent above or below. 



(e) 100 in. wide and over, 5 per cent above or below. 



189. Allowable Variation in Weight (when ordered to gauge). 

 Plates will be accepted if they do not measure more than 0.01 

 in. below the ordered thickness. 



An excess over the nominal weight, corresponding to the 

 dimensions on the order, will be allowed for each plate, if not 

 more than that shown in the following table, one cubic inch of 

 rolled steel being assumed to weigh 0.2833 Ib. 



