# A Practical Essay on the Strength of Cast Iron; Intended for the Assistance of Engineers, Iron Masters, Architects ... : Containing Practical Rules, Tables, and Examples, Also an Account of Some New Experiments ...

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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1822 edition. Excerpt: ...wheel-work, the breadth thus calculated should be at least doubled; therefore in the above given example the breadth should be 6% inches. 122. Case 5. When the pressure upon a beam increases as the distance from one of its points of support. Since the point of greatest strain is at 4/?! from the point A where the strain begins at, (see Fig. 20.) we 1,647 which differs so little from Case 3. that the same rule may serve for both cases. 123. Prop. 9. To determine a rule for the diagonal of a uniform square beam to support a given strain in the direction of that diagonal; when the strain does not. exceed the elastic force of cast iron. 124. Case 1. When the beam is supported at the ends and loaded in the middle, Yl= if;art. I00. and 80. or when l is in feet, and f= 15,300 lbs. 125. Rule. Multiply the length in feet by the weight in pounds, and divide the product by 219; the cube root of the quotient is the diagonal of the beam in inches. '.126. Case 1. When a beam is supported at the ends, and the strain is not in the middle of the length. 127. Rule. Multiply the weight in pounds by the distance-FB in feet, and multiply this product by the distance from the other end, or F'B in feet. (see Fig. 19.) Divide the last product by 58 times the length, and the cube root of the quotient will be the diagonal of the-beam in inches. I limit the rules to these cases only, because a beam is seldom placed in the position described in/this proposition. Examples are omitted for the same reason.. 128. Prop. 3. To determine a' rule to find the diameter of a solid cylinder, to support a given strain, when the strain does not exceed the elastic force of cast iron. If"the diameter be not uniform, the diameter de termined by the rule...show more

## Product details

• Paperback | 36 pages
• 189 x 246 x 2mm | 82g
• United States
• English
• black & white illustrations
• 123691886X
• 9781236918864