Modern Gasworks Practice

THE STORAGE OF GAS 623 be carried up to suit. For this reason the spirally guided holder, having no distinet guide-framing, lends itself more readily to extension, although prior to the insertion of the extra lift the tank will be subjected to additional stressing o wing to the in-creased “ overhang ” of the guide roller carriages. Needless to say, the eflect Frø. 378.—Telescopic Holder with Flyixg Lift. of this loading should be carefully considered when the tank is being designed. The addition of an extra lift cannot be contemplated if the holder represents the principal storage unit, for the time required to complete the alteration would be at least from five to six weeks, and might amount to three or four months.