PURLIN DETAILS FOR CORRUGATED STEEL ROOF. 



27 



fStf 



MM >-" 



T l 



Note 'Make due allowance in P and H for angles which overrun 



ANGLE PUPLJNS 



Leg 

 H 



Clip 



Angle- 



*2 



CHANNEL PURL/MS 



Purlin Clip Angle 



Channel pur/ins over 7" 

 deep to have Flange g/so 

 attached to rafters- 



ir 



4*5 

 4*5 

 4*5 



2" 



H 



3 

 3 



3 

 3| 

 31 



1 Beam purlins over 7" deep are usually bolted dfrect to rafter- 



l&EAM PUQL1N5 



4*5 

 4*3 

 5*% 



A /? 



/ 



-t -f 



Win Clip Angk 



T ^T 



Zee Bar purlins over 5" to have flange punched for connection to rafter- 



I BAR PURLINS 



4*3 



P 



Purfms or gfrts should extend, v/heris possible, over two or more bays with joints 

 staggered- Where pur/ins act as struts, use c/fp with four holes 



Where purlins are punched for nai/fng scrips, space holes about 5'0* apart - Bolt 

 purlins to clips and clips to trusses unless otherwise specified- 



FIG. 22. DETAILS OF PURLINS FOR CORRUGATED STEEL ROOF. AMERICAN BRIDGE COMPANY. 



