QUANTITIES IN MASONRY PIERS. 



260 



FIG. 10. QUANTITIES IN MASONRY PIERS FOR DECK GIRDERS, ILLINOIS CENTRAL 



RAILROAD. 



FIG. n. QUANTITIES IN MASONRY PIERS FOR THROUGH SPANS, ILLINOIS CENTRAL 



RAILROAD. 



The bracing of piers shall be designed to take all the wind forces specified to come on the 

 bridge. Diaphragm webs are to be used up to well above high water for piers located in the 

 stream or where floating materials may find lodgment. Oblong piers shall be braced against 

 inside and outside pressure. Piers exposed to injury from floating logs and drift shall be pro- 

 tected. 



The tubes should be painted inside and out with two coats of red lead and linseed oil, or 

 other prescribed paint. 



