432 



ESTIMATES OF STRUCTURAL STEEL. 



CHAP. XIII 



3rV to 4 in. 

 4tV to 4! 

 4ft to 5 

 5| to |J 



to 6 



to 65 



to 71 



TABLE III. Continued. 



STANDARD CLASSIFICATION OF EXTRAS ON IRON AND STEEL BARS. 

 Flat Bars and Heavy Bands. 



5 



6| 



6f 



Flat Bars and Heavy Bands. 



Light Bars and Bands. 



I* 



1^ 



I 



to 6 in. 

 to 6 in. 

 to 1 3^ in. 



in. 



in. 



in. 



in. 



in. 



in. 



in. 



I to 



H to 



Hand 



Hand 



H and 



T%and 



i^and 



* 



I 



o, 9 and ^ in. . . 

 , ii, 12 and i in. 

 8, 9 and ^g in. . . 



ii, 12 and | in. 

 3, 9 and ^ in. . . 



II, 12 and | in. 

 8, 9 and ^g in. . 

 , ii, 12 and | in. 

 8, 9 and tV m - 



n, 12 and | in. 

 3, 9 and tV m 



n, 12 and A 

 ', 9 and 3 



X Nos. 7, 

 X Nos. 10, 

 X Nos. 7, 1 

 X Nos. 10, 

 X Nos. 7, ! 

 X Nos. 10, 

 X Nos. 7, ; 

 X Nos. 10, 

 X Nos. 7, i 

 X Nos. 10, 

 X Nos. 7, i 

 X Nos. 10, 



X Nos. 10, ii, 12 and | in 

 X Nos. 7, 8, 9 and ^ in.. . 

 X Nos. 10, n, 12 and | in, 



in. 



m. 



.25 extra. 



30 

 .40 



50 



75 

 i.oo 



1-25 



Per 100 Lb. 

 Rates. 

 $0.20 extra. 



.40 



50 



50 



.70 



.90 



1. 10 

 I.OO 



1. 20 



1.50 



.10 

 .20 

 30 

 .40 



Per 100 Lb. 

 $0.40 extra. 



.60 



50 



.70 



.70 



.80 

 I.OO 

 1.20 

 1.20 

 1.30 

 1.30 

 1.50 

 1. 80 

 2.10 

 I.QO 

 2.40 



Mill Orders. In mill orders the following items should be borne in mind. Where beams butt 

 at each end against some other member, order the beams f in. shorter than the figured lengths 

 this will allow a clearance of \ in. if all beams come f in. too long. Where beams are to be built 

 into the wall, order them in full lengths, making no allowance for clearance. Order small plates 

 in multiple lengths. Irregular plates on which there will be considerable waste should be ordered 

 cut to templet. Mills will not make reentrant cuts in plates. Allow \ in. for each milling for 

 members that have to be faced. Order web plates for girders J to \ in. narrower than the distance 

 back to back of angles. Order as nearly as possible every thing cut to required length, except 

 where there is liable to be changes made, in which case order long lengths. 



It is often possible to reduce the cost of mill details by having the mills do only part of the 

 work, the rest being done in the field, or by sending out from the shop to be riveted on in the field 

 connection angles and other small details that would cause the work to take a very much higher 



