22 



STEEL ROOF TRUSSES AND MILL BUILDINGS. 



CHAP. I. 



Order two rivets to each lineal foot of purlin or girt to which the corrugated steel is to be 

 fastened and add 10 per cent for waste. 



Clips and Bolts. These are used for fastening corrugated steel to steel purlins or girts. Clips 

 ace made of No. 16, 13 in. steel, about 2\ in. long, and are slightly crimped at one end, to go over 



Corrugated Roof Steel 

 Side Lap 2 Corrugations 



CoversZ/f- *i* - Covers / " 



i . .__**_ 



"iTO 



~>re corrugating 

 after " 



(a) 



Special Cor- Roof Steel 

 Side Lap \k Corrugations 

 Covers 24*- {< - Covers Z4" 



i* 2k "-1 I* -30 "w/tfe he fore corrugating 

 ~- y7 ~ " - affer 



End Lap for Roof 6" 

 (b) 



Corrugated Siding Steel 

 Side Lap I Corrugation 

 Covers 24"-^*- Covers 24 " - - * 



|* d "w/tfe before corrugaffng 

 **Z6" " after 

 End Lap forS/'afes -4 " 



(CJ 

 FIG. 17. DETAILS OF CORRUGATED STEEL. 



= Tofal safe load. 



Working stress* 12000 /fa. 

 h'Depfh of corrugation, ins. 



* b/ictfh of sheet t ins. 

 t-Th left ness of sheet ; ins. . 

 I Clear pon, in 5. 



50an,L>in ft. 

 FIG. 1 8. SAFE LOADS FOR CORRUGATED STEEL. 



