TYPES OF ROOF TRUSSES. 



11 



^--Louvres 



Glass of Louvres 

 'Glass 



Glass or Louvres 



, , u c 



(a) MONITOR AND SKYLIGHTS 



(b) DOUBLE MONITOR 



(c) SKYLIGHTS 



Glass - </N> Glass 



*-G/ass or Louvres 

 >^ Glass 



ft) MONITOR AND SKYLIGHTS 



Glass - 



rGIass 



Circular Vent f labor 

 -Glass 



(e) SKYLIGHTS 



(f) SKYLIGHTS 



-Glass 



(k) SKYLIGHTS 



(I) ROOF WITH SAW TOOTH SKYLIGHT 



North End 

 Glass-* 



South End North End 



South End 



(m) SAW TOOTH ROOF (MAWS SHED) (n) KETCHUN'S MODIFIED SAW TOOTH ROOF 

 FIQ. 6. ROOF TRUSSES SHOWING METHODS OF LIGHTING AND VENTILATING. 



