Rudimentary treatise on mensuration and measuring |
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Página 7
... placed with its foot 14 feet from a wall , the top of the ladder just reaching to the top of the wall ; required the height of the wall . Here 14 feet is the base of the right angled triangle , and 50 feet , = length of the ladder is ...
... placed with its foot 14 feet from a wall , the top of the ladder just reaching to the top of the wall ; required the height of the wall . Here 14 feet is the base of the right angled triangle , and 50 feet , = length of the ladder is ...
Página 18
... placed above 36 = 6 , The sign or placed before a quantity , or represents the square root of that quantity ; thus √9 × 16 = 12 , and √a xb or ab signifies the square root of the product of a and b , & c . 3 The sign placed before a ...
... placed above 36 = 6 , The sign or placed before a quantity , or represents the square root of that quantity ; thus √9 × 16 = 12 , and √a xb or ab signifies the square root of the product of a and b , & c . 3 The sign placed before a ...
Página 20
... a right angled triangle , whose base A B is 56 , and the hypothenuse A C 65 feet ? 56 65 56 65 336 325 280 390 3136 4225 3136 = 1089 ( 33 feet perpendicular BC . 9 63 ) 189 189 3. A ladder is to be placed so as to 20 MENSURATION OF LINES .
... a right angled triangle , whose base A B is 56 , and the hypothenuse A C 65 feet ? 56 65 56 65 336 325 280 390 3136 4225 3136 = 1089 ( 33 feet perpendicular BC . 9 63 ) 189 189 3. A ladder is to be placed so as to 20 MENSURATION OF LINES .
Página 21
Thomas Baker (C.E.). 3. A ladder is to be placed so as to reach the top of a wall 333 feet high , and the foot of the ladder cannot be placed nearer the wall than 18 feet ; what must be the length of the ladder ? Ans . 38 feet . 4. The ...
Thomas Baker (C.E.). 3. A ladder is to be placed so as to reach the top of a wall 333 feet high , and the foot of the ladder cannot be placed nearer the wall than 18 feet ; what must be the length of the ladder ? Ans . 38 feet . 4. The ...
Página 80
... , deducting only the vacuity from the hearth to the mantle , on account of the trouble of them . All windows , doors , & c . , are to be deducted out of the contents of the wall in which they are placed , and 80 ARTIFICERS ' WORK .
... , deducting only the vacuity from the hearth to the mantle , on account of the trouble of them . All windows , doors , & c . , are to be deducted out of the contents of the wall in which they are placed , and 80 ARTIFICERS ' WORK .
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Términos y frases comunes
12 feet 20 feet A B C AMEN CORNER axis Baker's Land base bottom width centre chains Charles Tomlinson chord circle circular circumference content in cubic correction for curvature cubic feet cubic foot cubic yards curve decagon decimals depths diagonal diameter distance Duodecimals Engineering Surveying equal EXAMPLES feet 6 inches feet long figure find the area find the content find the solidity foot fore sights formula frustrum given ground half height instrument Land and Engineering length level book measured method miles multiply NOTE offsets parabola perpendicular polygon Prob PROBLEM pyramid quantity quarter girt radius railway cutting refraction required the area Required the content RULE RULE.-Multiply S. P. Woodward screws segment side slopes SLIDING RULE spirit level square feet square yards staves subtract Table tangent telescope trapezium VIRTUE BROTHERS W. D. Hamilton zone
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Página 5 - Is. 6d. 76. GEOMETRY, DESCRIPTIVE, with a Theory of Shadows and Perspective, and a Description of the Principles and Practice of Isometrical Projection, by JF Heather.
Página 51 - A sphere is a solid bounded by a curved surface, every point of which is equally distant from a point within called the center.
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Página 81 - Large and plain articles are usually measured by the square foot or yard, &c; but enriched mouldings, and some other articles, are often estimated by running or lineal measure •, and some things are rated by the piece. In measuring of Joists...
Página 86 - GLAZIERS' WORK. — Glaziers take their dimensions either in feet, inches, and parts ; or feet, tenths, and hundredths. And they compute their work in square feet. In taking the length and breadth of a window, the cross bars between the squares are included. Also, windows of round or oval forms are measured as square, measuring them to their greatest length and breadth, on account of the waste in cutting the glass.