Straight Line Engineering Diagrams (Classic Reprint) - Softcover

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Excerpt from Straight Line Engineering Diagrams

This diagram indicates the safe load in tons that may be carried by either a timber or concrete pile, consid ered either as__a column resting on a hard stratum or as being supported by the friction of the earth on its sides. It is assumed that the pile is driven by a ham mer of known Weight and fall which gives a measured penetration under the last or test blow which does not bounce. This blow should be on sound wood while the preceding penetrations have been decreasing at an approximately constant rate. The result is not re liable ii there has been any crushing of the head, body or foot of the pile. The diagram consists of three scales, the first is laid off proportionately to the ham mer weight and its fall,'the second to the safe load in tons and the third to the penetration in inches under the last blow. A typical problem is solved on the dia gram. The calculations are based on the generally 2 W h.

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