Stamp Milling a Treatise On Practical Stamp Milling And Stamp Mill Construction
The book Stamp Milling a Treatise On Practical Stamp Milling And Stamp Mill Construction was written by author Algernon Del Mar Here you can read free online of Stamp Milling a Treatise On Practical Stamp Milling And Stamp Mill Construction book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Stamp Milling a Treatise On Practical Stamp Milling And Stamp Mill Construction a good or bad book?
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Per square inch. When the weight on a foundation is excessive, or subject to sudden changes, the concrete must be at its highest efficiency; therefore a rich mixture such as 1:1. 5: 2 must be used, but the less the strain on the foundation the poorer the mixture may be, leaving always a safe allowance for the unforeseen, which always happens. Good concrete made with a mixture somewhat richer than that found by calculation will stand a strain of from 2100 to 2800 Ib. Per square inch. Under tensi...on, concrete will stand from a sixth to a tenth of this, or 200 to 300 Ib. A stamp- mill foundation figures out thus: The base of a mortar for concrete foundation is usually 32 by 60 in. , or 1920 sq. In. ; the weight of mortar, stamps, dies, ore, etc. , about 14, 000 Ib. , or about 7 Ib. To the square inch. Two 86 STAMP MILLING battery-posts 12 by 28 by 21 ft. With cam-shaft, bull-wheel, cams, etc. , will weigh about 14, 000 Ib. The base with sole- plates occupies about 720 sq. In. , giving 20 Ib.
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