2^2 ACTUAL COSTS AND CAPACITY OF GASWORKS. 



Hydraulic cup, similar to inner lift. 



One steel angle, 5 inches by inch section, and angle covers, 18 

 inches long, forming bottom curb. 



Twelve vertical stays, 7 inches by 2f inches, channel steel, secured 

 to dip channel, bottom curb, and, where possible, to spiral plates. 



Side sheets and spiral guides as inner lift. 



Six pairs of cast-iron carriages, and rollers working in turned steel 

 axles, fixed at equal distances around the dip channel. 



To each lift is attached a ladder, consisting of 2-inch 

 by f -inch flat sides and J-inch diameter rungs. The whole 

 of the sheet rivets are J-inch diameter, i-inch pitch, with 

 tape inserted in joints. The top curb rivets are f-inch 

 diameter, 2-inch pitch, and the bottom curb rivets 

 f-inch diameter, 4-inch pitch. Sheeting to dip and cup 

 channels, f-inch diameter, 2-inch pitch, and flats to skirting 

 plate, f-inch diameter, 6-inch pitch. The whole of the 

 tank plates received one coat of oil before leaving con- 

 tractor's yard, one coat of red oxide paint during erection, 

 and another on completion. To the top curb of tank 

 from the ground is fixed a ladder, formed of 2-inch by 

 J-inch flat sides, with J-inch rungs. 



The capacity of the gasholder is about 110,000 cubic 

 feet, or, taking the capacity required as twenty-four hours 

 maximum output, the equivalent of 22,000,000 cubic feet 

 per annum. With the greater regularity of load, however, 

 which is now experienced, through the extended use of gas 

 engines, cookers, etc., it would probably suffice for a much 

 larger output, particularly in a district devoid of factories. 

 With inner lift inflated, the pressure given is 3i-tenths; 

 and with outer lift inflated, 53-tenths. 



d. 



Cost of tank, gasholder and foundations . 1,094 

 Cost per thousand cubic feet capacity . . 1540 



Governor. The governor is of the compensating type, 

 size, 6 inches. A by-pass main is fixed, including the 

 necessary rack and pinion valves, three in number. Cost 

 of governor, including connections, $2. 



Office and showroom. This building is erected at the 

 entrance to the works. The office is 12 feet by 15 feet, 

 and the showroom, 28 feet by 15 feet. The foundations 







