SAW TOOTH ROOFS 



i8 7 



The roof water is carried down 5-111. cast iron leaders attached to 

 alternate interior columns. 



The sash in the vertical leg are in two rows, the upper row being 

 hinged at their, centers, thus providing ample ventilation. Condensation 

 gutters are placed below the vertical leg to take the drip. The skylight 

 area is about 20 per cent of the roof area, the window area is about 

 45 per cent of the outside walls, while about 28 per cent of the entire 

 outside surface of the building is of glass. All glazing is of ^-in. 

 ribbed wire glass, with the ribs placed vertical. 



The skylight frames and moldings are made of No. 24 galvanized 

 iron, while the entire roof is flashed with i6-oz. copper sheets, 4 feet 

 wide, and counter flashed with sheet lead. 



Louisville & Nashville R. R. Shops. The saw tooth roof shown 

 in Fig. 84b was used in the South Louisville shops of the Louisville 

 & Nashville R. R. The roof covering is composed of composition 

 roofing on the pitched roof and asphalt and gravel roofing on the 

 flat portions laid on ij4" dressed and matched sheathing. 



FIG. 84b. SAW TOOTH ROOF, LOUISVILLE & NASHVILLE R. R. SHOPS. 



The short leg of the saw tooth is glazed with ribbed wire glass, 

 and the building is ventilated by means of 1 2-inch circular ventilators 

 placed in the peak of the saw teeth and spaced 30' 2". 



Saw Tooth Roof of the I nger soil-Sargent Drill Co. The design 

 of the saw tooth roof used on the Rock Drill building is shown in Fig. 

 &4C. The floors are of concrete and the roof is of reinforced concrete 

 covered with felt and slag. Ribbed glass is used in the glazed tooth. 

 It will be noticed that electric motors for driving the machinery are 



