Rudimentary treatise on mensuration and measuring |
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Σελίδα 5
... turn the compasses twice on the arc , as at r and s : —again , with centres r and s , describe arcs inter- secting in C - draw CP , and it will be the perpendicular required . n NOTE . This problem and the following one are usually done ...
... turn the compasses twice on the arc , as at r and s : —again , with centres r and s , describe arcs inter- secting in C - draw CP , and it will be the perpendicular required . n NOTE . This problem and the following one are usually done ...
Σελίδα 21
... turning the ladder over , without removing the foot out of its place , it touched a moulding 36 feet high on the other side : required the breadth of the street . Ans . 76 123 feet . 7. The width of a house is 48 feet , and the height ...
... turning the ladder over , without removing the foot out of its place , it touched a moulding 36 feet high on the other side : required the breadth of the street . Ans . 76 123 feet . 7. The width of a house is 48 feet , and the height ...
Σελίδα 26
... turns round 500 times in travelling a mile . Ans . 3 ft . 4.32 in . 6. The driving wheel of a locomotive engine is 6 feet in diameter , how often does it turn in a second , when travelling at the rate of 60 miles in an hour ? Ans . 4 ...
... turns round 500 times in travelling a mile . Ans . 3 ft . 4.32 in . 6. The driving wheel of a locomotive engine is 6 feet in diameter , how often does it turn in a second , when travelling at the rate of 60 miles in an hour ? Ans . 4 ...
Σελίδα 96
... turns of fences , corners of fields , to which offsets are taken , are usually shewn by lines sketched in a similar situation to the middle column , as the fences , buildings , & c . , have to the chain line . Thus a re- presentation of ...
... turns of fences , corners of fields , to which offsets are taken , are usually shewn by lines sketched in a similar situation to the middle column , as the fences , buildings , & c . , have to the chain line . Thus a re- presentation of ...
Σελίδα 98
... turn it till the marks A and B can be seen through one of the grooves ; then look through the other groove , and if the mark at C can be seen through it , the cross is in the right place for the perpendicular ; if not , move the cross ...
... turn it till the marks A and B can be seen through one of the grooves ; then look through the other groove , and if the mark at C can be seen through it , the cross is in the right place for the perpendicular ; if not , move the cross ...
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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
Δημοφιλή αποσπάσματα
Σελίδα 3 - The circumference of every circle is supposed to be divided into 360 equal parts, called degrees ; and each degree into 60 equal parts, called minutes ; and each minute into 60 equal parts, called seconds ; and these into thirds, &c.
Σελίδα 51 - The sphere may be conceived to be formed by the revolution of a semicircle about its diameter, which remains fixed.
Σελίδα 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.
Σελίδα 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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Σελίδα 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...
Σελίδα 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.