54f 



STEEL ROOF TRUSSES AND MILL BUILDINGS. 



CHAP. I. 



designing engineer is concerned. Details of counterbalanced sash, are shown in (a) to (c) and 

 details of a horizontal sliding sash are shown in (d) and (e), Fig. 53. The details of the sections 

 used by the different firms may be determined by observing that in Fig. 53 (f) is " Lupton " (g) 

 is " United Steel Sash," and (h) is "Fenestra." Details of construction, and details of operating 



Continuous^ 3 I J, <// '**/ ^ttomof 

 .kJLJ. &}?/ / Storm Pane! 



(3) Vertical Section (b) Vertical Section (c)Yert.Sect. Fixed f3ne/.(d)5tormfene/ 



Top Hung Monitor Sash Continuous Sawtooth Sash Top Hung Monitor 5as/? 



= (Fixed Panel For standard s^sh, height ^4',5,'or 6'. Units are 



= / iJtormrane/ designed for ?0' truss spacing. The rar/m5cm/ts,h0ir- 

 erer, can be combined to fitany/enqth ofro/r. Sfanobrrf 

 mvnt/'n spacing = S3 '& 'if. 6/ass width =23$, he/ghc. = 



Horiz.5ect. Continuous Top Hung 5ash 



End Member, Storm 



^i "^ N 3" 

 Top Supporting i_ _ ^H< 76 



Member Interior Vertical fluntin Bottom Member, Storm Panel Endflember 



FIG. 54. DETAILS OF "UNITED STEEL SASH" VENTILATORS AND SKYLIGHTS. 



devices and hardware can be obtained from the various catalogs. Details of "United Steel Sash'' 

 monitor ventilators and skylights are shown in Fig. 54. Details of "Lupton" monitor ventilators 

 and skylights are shown in Fig. 55. The details shown in Fig. 54 and Fig. 55 are very complete. 

 For address of other companies manufacturing steel windows, see Sweet's "Architectural Catalog" 

 published by Sweet's Catalog Service, New York. 



STEEL DOORS. Steel doors built up out of special steel sections are made by several firms. 

 Details of "Lupton" tubular steel doors manufactured by David Lupton Sons Company, 



