Pumping machinery, a treatise on the history, design, construction and operation of various forms of pumps by Greene Arthur Maurice 1872-1953

Author:Greene, Arthur Maurice, 1872-1953
Language: eng
Format: epub
Tags: Pumping machinery
Publisher: New York, John Wiley & Sons, inc.; [etc., etc.]
Published: 1919-03-25T05:00:00+00:00

A formula recommended by Baker for bearing power of a pile is

P = ioo(>/l'FA-h(50ii)2-5orf),

where P = supporting pressure in tons, W = weight of ram in tons, A=height of fall in feet, rf=» penetration of pile in feet at last blow.

The piles should be of good quality, of sound white oak, not less than lo inches in diameter at the smaller end and 14 inches at the larger. They should be straight grained and have all bark removed. After driving they are cut off below the permanent water line, and then concrete is put around the end, making a solid bed.

Special Steam Piping and Valves.

The steam piping used on the engine should be designed so that the velocity of the steam is 6000 feet per minute. This is a simple method and gives good results. There is a method in which the pipe is designed to give a certain discharge when the drop in pressure is assumed. The formula developed by Prof. Carpenter for this (A. S. M. E., vol. xx, p. 342) is

Download

Copyright Disclaimer:
This site does not store any files on its server. We only index and link to content provided by other sites. Please contact the content providers to delete copyright contents if any and email us, we'll remove relevant links or contents immediately.