2O2 



ACTUAL COSTS AND CAPACITY OF GASWORKS. 



each end for cart traffic, each 9 feet wide by 6 feet, to spring 

 of semi-circular arch. These openings are finished off with 

 bull-nosed bricks. 



Pre 



o 



v5//e 



Leve/ 



Fig. 3. Retort House : Longitudinal Elevation. 





Fig. 4. Retort House : Plan. 



Retort house roof. The roof consists of five steel princi- 

 pals, each set at 7 feet 6-inch centres. At the apex of 

 the roof, an opening is left, and a ventilator, of steel plate, 



