# Text-book of Modern Carpentry: Comprising a Treatise on Building-timber, with Rules and Tables for Calculating Its Strength, and the Strains to which Each Timber of a Structure is Subjected; Observations on Roofs, Trusses, Bridges, &c. and a Glossary, Explaining at Length the Technical Terms in Use Among Carpenters

Crosby, Nichols and Company, 1858 - Carpentry - 180 pages

### Contents

 CARPENTRY 1 99 29 Durability of Timber 38 Rules for determining its Tensile Strength 48 EQUILIBRIUM OF STRAINS ON TIMBER 65
 FLOORS 94 Observations on Roofs 103 Ironwork employed in Roofs 112 IRON 138 GLOSSARY 147

### Popular passages

Page 77 - Multiply the divisor, thus augmented, by the last figure of the root, and subtract the product from the dividend, and to the remainder bring down the next period for a new dividend.
Page 77 - Find the greatest square number in the first or left hand period, place the root of it at the right hand of the given number, (after the manner of a quotient in division) for the first figure of the root, and...
Page 70 - To find the area of a parallelogram (65), whether it be a square, a rectangle, a rhombus, or a rhomboid. RULE. — Multiply the length by the breadth, or perpendicular height, and the product will be the area.
Page 73 - Problem 14. — To find the area of a sector of a circle. Rule. — Multiply the arc of the sector by half the radius. Example. — How much tin is required to cover a 60° sector of a 10 foot circular deck?
Page 71 - Multiply the square of the side of the polygon by the number standing opposite to its name in the following table, and the product will be the area.
Page 74 - To find the solidity of a sphere or globe.. RULE.* "... Multiply the cube of the diameter by .5236, and the product will be the solidity.
Page 71 - To find the area of a regular polygon. RULE.* Multiply half the perimeter of the figure by the perpendicular falling from its centre upon one of the sides, and the product will be the area.
Page 73 - Multiply half the circumference by half the diameter, and the product will be the area.
Page 27 - ... method of barking the trees standing in the spring, and felling them about the end of October.:): Duhamel, whose extensive knowledge of the nature and qualities of woods is well known, recommends the same method; and Evelyn states, that " to make excellent boards and planks, it is the advice of some, you should bark your trees in a fit season, and so let them stand naked a full year before the felling.
Page 77 - II. Find the greatest square number in the first or left hand period, and place its root on the right of the number for the first figure in the root.