218 STEEL RAILWAY BRIDGES. CHAP. IV 



spector, through an oversight or otherwise, has accepted material or work which is defective 01 

 contrary to the specifications, this material, no matter in what stage of completion, may b< 

 rejected by the purchaser. 



1 60. Shop Plans. The purchaser shall be furnished complete shop plans. 



161. Shipping Invoices. Complete copies of shipping invoices shall be furnished to tnt 

 purchaser with each shipment. These shall show the scale weights of individual pieces. 



X. FULL-SIZED TESTS. 



162. Eye-Bar Tests. Full-sized tests on eye- bars and similar members, to prove the work- 

 manship, shall be made at the manufacturer's expense, and shall be paid for by the purchaser al 

 contract price, if the tests are satisfactory. If the tests are not satisfactory, the members repre- 

 sented by them will be rejected. 



163. In eye-bar tests, the minimum ultimate strength shall be 55,000 Ib. per sq. in. The 

 elongation in 10 ft., including fracture, shall be not less than 15 per cent. Bars shall generally 

 break in the body and the fracture shall be silky or fine granular, and the elastic limit as indicated 

 by the drop of the mercury shall be recorded. Should a bar break in the head and develop the 

 specified elongation, ultimate strength and character of fracture, it shall not be cause for rejection, 

 provided not more than one-third of the total number of bars break in the head (see 136). 



ADDENDUM TO GENERAL SPECIFICATIONS FOR STEEL RAILWAY BRIDGES. 



POINTS TO BE SPECIFICALLY DETERMINED BY BUYERS WHEN SOLICITING PROPOSALS FOR STEEL 



RAILWAY BRIDGES. 



When general detail drawings are not furnished for the use of bidders specific answers shoulc 

 be given to questions a, b and c, below. 



Specific answers should also be given to questions d, e and f if the class of work described ir 

 any of the paragraphs there referred to is desired. If these features are not specifically demanded 

 the unbracketed paragraphs will be construed to define the kind of work desired. 



(a) What class of live load shall be used? (Pars. 7 and 8.) 



(b) Shall linseed oil or paint be used? If paint, what kind? (Par. 151.) 



(c) Shall contractor furnish floor bolts? 



Sd) Shall general reaming be done? (Par. 121.) 

 e) Shall field connections be assembled at the shop? (Par. 135.) 

 f) Shall floor connection angles be milled after riveting? (Par. 129.) 



