2O2 



FRAMEWORK 



Details of Cast Iron Gutter 



FIG. 97. CROSS-SECTION OF THE SHOPS OF THE MATHIESSEN & HEGELER 

 ZINC WORKS, LASALLE, ILL. 



The original saw tooth roof shop built by this firm in 1874 is still 

 in use, and is one of the first, if not the first, saw tooth roofs built in 

 America. 



COLUMNS. The common forms of columns used in mill build- 

 ings are shown in Fig. 98. For side columns where the loads are not 

 excessive, column (g) composed of four angles laced is probably the 

 best. In this column a large radius of gyration about an axis at right 

 angles to the direction of the wind is obtained with a small amount 



