STEEL ROOF TRUSSES AND MILL BUILDINGS. 



CHAP. I. 



r , i i /*?Aa0WUi 



5f ^ ^U$e steel window posts only w/ten girts connect at s/cte-i 



\>n?it for Type A 



When steel window post is not i/sedj /? *Iz For Types A & B 



DATA FOR SPACING BETWEEN STEEL WINDOW POSTS- 

 For Fixed, Pivoted and Counterbalanced Windows 



Glass I0"orl2" n 



Muntins (each) %' tl 



Stiles (each) 2$ 



Sash Clearance " 



Jambs (each) /% 



Nailing Pieces (esch) Ij 



Frame Clearance 4 

 For Sliding Windows use above data except no Sash Clearance, and add 2$ for meeting rail 1 



FIG. 31. DATA FOR PIVOTED WINDOWS. AMERICAN BRIDGE COMPANY. 



