154- The contractor must furnish the use of a testing 

 machine capable of testing- the above specimens at all mills 

 where the steel may be manufactured, free of cost. 



155. Full sized parts of the structure may be tested at 

 the option of the Engineer of the Railroad Company, but 

 if tested to destruction, such material shall be paid for at 

 cost, less its scrap value to the contractor, if it proves satis- 

 factory. If it does not stand the specified test, it will be 

 considered rejected material, and be solely at the cost of 

 the contractor. 



PAINTING. 



Painting. 156. All metal work (except 159) before leaving the 

 shop shall be thoroughly cleaned from all loose scale and 

 rust and oil, and be given one good coating of pure raw 

 linseed oil, well worked into all joints and open spaces. 



157. In riveted work the surfaces coming in contact shall 

 each be painted before being riveted together. Bottoms of 

 bed-plates, bearing-plates, tooled ends and joints of chords 

 and posts, and any parts which are not accessible for 

 painting after erection, shall have two coats of paint; the 

 paint shall be a good quality of iron ore paint, mixed 

 with pure linseed oil, unless otherwise directed. It will be 

 subject to approval of the Engineer. 



158. After the structure is erected, the metal work shall 

 be thoroughly and evenly painted with two additional coats 

 of paint, mixed with pure linseed oil. All recesses which 

 will retain water, or through which water can enter, must 

 be filled with thick paint or some waterproof cement before 

 receiving the final painting. 



159. Pins, bored pin-holes, screw threads and turned fric- 

 tion rollers shall be coated with white lead and tallow before 

 being shipped from the shop. 



ERECTION. 



Erection 160. The contractor, unless it be otherwise specified, shall 

 furnish all staging and false work, shall erect and adjust all 

 the metal work, and put in place all floor timbers, guards, 

 etc., complete, ready for the rails. 



