3 2 4 



DOORS 



tical guides. This door was covered with corrugated steel with \ 1 /^ 

 inch corrugations as described in the cut. 



Details of a steel sliding door are shown in Fig. 165. This door is 

 made to slide inside the building and swing clear of the columns. 

 Where the columns are so close together that there is not room enough 

 for the door to slide the entire length of the opening, it should be 

 placed on the outside of the building. The track and hangers shown 



^L ock here from eutef&e \j^Jrt 



Steel Sliding Door 

 FIG. 165. 



make a very satisfactory arrangement ; however there is a tendency for 

 the wheels to jump the track unless the grooves in the wheels are 

 made very deep. 



There are quite a number of patented devices on the market for 

 hanging sliding doors. The Wilcox trolley door hanger, track and 



