228 



CORRUGATED 



TABLE XVI. 



NUMBER OF BARBED ROOFING NAILS IN ONE POUND. 



The common methods of fastening corrugated steel directly to 

 the purlins and girts are shown in Fig. in. Nailing pieces should pref- 

 erably be used where anti-condensation roofing, Fig. 127, is used, or 

 where the sides are lined with corrugated steel. The clinch nail is prob- 



^ /?/i^f/j an etc //rich na//5 go 



'{hrougft top of corrugat/ens 

 ^-^ -*m_ 



Methods of Fastening 

 Corrugated Steel to PUrlins 



Table of Clinch Nails 



FIG. in. 



METHODS OF FASTENING CORRUGATED STEEL TO PURLINS 



AND GIRTS. 



ably the most satisfactory fastening for the usual conditions. The side 

 laps are fastened together by means of copper or galvanized iron clos- 



