xii TABLE OF CONTENTS 



Roebling 293 



" Buckeye " Fireproof 294 



Multiplex Steel 295 



Ferroinclave 295 



Corrugated 295 



Buckled Plates 296 



Steel Plate 297 



Thickness of Timber Flooring 297 



CHAPTER XXIII. WINDOWS AND SKYLIGHTS. 



Glazing 298 



Glass ! 298 



Diffusion of Light 299 



Relative Value of Different Kinds of Glass 301 



Kind of Glass to Use 301 



Placing the Glass 302 



Use of Window Shades 303 



Size and Cost of Glass 304 



Cost of Windows 305 



Translucent Fabric 306 



Cost of Translucent Fabric 307 



Double Glazing 307 



Details of Windows and Skylights 307 



Amount of Light Required 310 



Skylights for Trainsheds 315 



CHAPTER XXIV. VENTILATORS. 



Ventilators 317 



Monitor Ventilators 317 



Cost of Monitor Ventilators 320 



Circular Ventilators 320 



CHAPTER XXV. DOORS. 



Paneled Doors 322 



Wooden Doors 322 



Steel Doors 323 



Cost of Doors 325 



