2-1/2| 8 | 725 | 3 | 1.20 | 472 | 35.00| 587 | 45.00| 507 | 39.00 6 | 8 | 1943 | 5 | 2.60 | 880 | 61.00|1083 | 78.00| 938 | 68.00 8 | 8 | 2639 | 7 | 3.50 |1113 | 76.00|1363 | 97.00|1193 | 84.00 9 | 9 | 3825 | 8 | 5.20 | | |1770 |124.40|1539 |108.00 6 | 10 | 3093 | 5 | 4.30 | | |1458 |107.00|1266 | 91.00 8 | 10 | 4200 | 7 | 6.20 | | |1867 |131.00|1630 |113.00 10 | 10 | 5308 | 9 | 8.10 | | |2277 |155.00|1994 |135.00 12 | 10 | 6516 | 11 |10.00 | | |2653 |179.00|2323 |157.00 6 | 12 | 4494 | 5 | 6.30 | | |1930 |138.00|1685 |120.00 10 | 12 | 7714 | 9 |11.35 | | |2910 |200.00|2555 |174.00 12 | 12 | 9324 | 11 |14.00 | | |3393 |231.00|2984 |201.00 ======+=======+=========+=====+======+======+======+======+======+======+====== GALVANIZED IRON TANKS =====+========+==========+==========+========+======== | Height | Diameter | Capacity | Weight | No. | Ft. | Ft. | Bbl. | Lb. | Price -----+--------+----------+----------+--------+-------- 150 | 5 | 8 | 60 | 475 | $ 47.50 151 | 6 | 6 | 41 | 340 | 35.00 152 | 6 | 8 | 72 | 530 | 52.50 153 | 8 | 6 | 54 | 430 | 43.00 154 | 8 | 8 | 96 | 640 | 65.00 155 | 8 | 10 | 150 | 875 | 85.00 156 | 10 | 8 | 120 | 750 | 73.00 157 | 10 | 10 | 180 | 970 | 95.00 158 | 10 | 12 | 270 | 1400 | 128.00 159 | 12 | 12 | 324 | 1600 | 150.00 =====+========+==========+==========+========+======== There are many combinations and forms of these structures, and a detailed description of their characteristic construction and cost would occupy too much space for this present work. By referring to the pages of any agricultural, architectural, or engineering magazine, advertisements may be found of firms who build such towers and who may be depended upon for satisfactory work. [Illustration: FIG. 52.--Iron tank.] If the tank is to be placed inside a building, it may be built of steel or of wood, although a lining of lead, copper, or galvanized iron is of advantage in the latter case. If the tank is out of doors, protection against frost must be carefully attended to, both to prevent an ice cap forming in the tank--the cause of many failures of tanks--and to prevent standing water in the connecting pipes being frozen. If the tank is to be placed inside the building, care must be taken to have it water-tight and to have the supports of the tank ample for the excessive weight which will be thereby imposed. Wooden tanks are likely to rot, and if left standing empty, become leaky. They are, therefore, less worth while than iron tanks.