Synopses & Reviews
Synopsis
Excerpt from Erecting Work
AN engine, to be properly set, must be set rigidly. It is necessary to have the foundation of ample size, rightly proportioned, of good material, and skilfully built. The nature of the ground must be carefully considered and provision made, in preparing it for the foundation, to reduce the liability of settling to a minimum.
Concrete foundations for engines have come into general use throughout the country, owing to their cheapness and durability, and some points on the building of these will be of service. Material for the foundations should be the best of its kind. The stone (if stone is used) should be broken clean and dry. The sand should be coarse and gritty.
Wet a small quantity of cement, and mold it in the hands; then put the sample away and see how long it takes it to set After it has set, see how much pound ing will be required to break it up. By these simple means, bearing in mind that good cement should set in twenty-four hours, or less, the quality of the cement can be readily determined.
The length of time it takes a foundation to set before weight may be safely placed on it can be ascertained.
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