A Treatise of Practical Surveying, ... |
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Página
The fifth section contains a new , and much more concise method of determining
the areas of surveys from the field - notes ... and I venture to assert that it is
impossible ( from the nature of right - lined figures ) that any method or methods
more ...
The fifth section contains a new , and much more concise method of determining
the areas of surveys from the field - notes ... and I venture to assert that it is
impossible ( from the nature of right - lined figures ) that any method or methods
more ...
Página
Truth calls upon me to acknowledge , that the methods by calculation , herein set
forth , got their rise from those of the late Thomas Burgh , esq . who first
discovered an universal method for determining the areas of right lined figures ,
and for ...
Truth calls upon me to acknowledge , that the methods by calculation , herein set
forth , got their rise from those of the late Thomas Burgh , esq . who first
discovered an universal method for determining the areas of right lined figures ,
and for ...
Página 236
From what has been said it is plain , that from this method any fault committed in
a survey can be readily determined , and therefore must be much preferable to
the present method of taking diagonals , or the bearings and lengths of lines ...
From what has been said it is plain , that from this method any fault committed in
a survey can be readily determined , and therefore must be much preferable to
the present method of taking diagonals , or the bearings and lengths of lines ...
Página 242
By the methods here laid down I have reduced a map from a scale of 40 to one of
20 perches to an inch , which ... a parallelogram . proportional compasses , or
any other method I ever met with , though the figures to be reduced were ever so
...
By the methods here laid down I have reduced a map from a scale of 40 to one of
20 perches to an inch , which ... a parallelogram . proportional compasses , or
any other method I ever met with , though the figures to be reduced were ever so
...
Página 260
... and when you have gone round that field or di . vision , insert the station you
close at , and so through the whole : a little practice can only render this
sufficiently familiar , and the method of protraction must be evident from the field -
notes .
... and when you have gone round that field or di . vision , insert the station you
close at , and so through the whole : a little practice can only render this
sufficiently familiar , and the method of protraction must be evident from the field -
notes .
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Términos y frases comunes
acres angle Answer base bearing called centre chains chord circle Co-fine Co-ſecant Co-tang column contained decimal difference Dift direct Diſt distance divided draw drawn east edge equal EXAMPLE feet field field-book figures four four-pole give given greater ground half height Hence inches laid land length less logarithm manner measure meridian method multiplied needle object observe off-sets opposite parallel parallelogram perches perpendicular plane Plate pole PROB proportion quantity quotient radius reduce remainder right angles right line root scale Secant sect side sights sine square station stationary suppose survey taken tangent theo third triangle triangle ABC true turn variation whence whole
Pasajes populares
Página 32 - The angle in a semicircle is a right angle ; the angle in a segment greater than a semicircle is less than a right angle ; and the angle in a segment less than a semicircle is greater than a right angle.
Página 199 - ... that triangles on the same base and between the same parallels are equal...
Página 94 - C' (89) (90) (91) (92) (93) 112. In any plane triangle, the sum of any two sides is to their difference as the tangent of half the sum of the opposite angles is to the tangent of half their difference.
Página 23 - Four quantities are said to be in proportion when the product of the extremes is equal to that of the means : thus if A multiplied by D, be equal to B multiplied by C, then A is said to be to B as C is to D.
Página 95 - TO THEIR DIFFERENCE ; So IS THE TANGENT OF HALF THE SUM OF THE OPPOSITE ANGLES', To THE TANGENT OF HALF THEIR DIFFERENCE.
Página 37 - ABDE+ACGF the sum of the squares —BKLH-\-KCML, the sum of the two parallelograms or square BCMH; therefore the sum of the squares on AB and AC is equal to the square on BC.
Página 24 - Things that are equal to one and the same thing, are equal to each other. 2. Every whole is greater than its part. % 3. Every whole is equal to all its parts taken together. 4 If to equal things, equal things be added, the whole will be equal. 5. If from equal things, equal things be deducted the remainders will be equal.
Página 36 - XIII. •All parallelograms on the same or equal bases and between the same parallels...
Página 182 - VI. To find the content of a triangular piece of ground, Multiply the base by half the perpendicular, or the perpendicular by half the base ; or take half the product of the base into the perpendicular. The reason hereof is plain, from cor.
Página 35 - Triangles upon equal bases, and between the same parallels, are equal to one another.
Información bibliográfica
| Título | A Treatise of Practical Surveying, ... |
| Autor | Robert Gibson |
| Publicado | 1808 |
| Procedencia del original | Universidad de Michigan |
| Digitalizado | 29 Mayo 2007 |
| Largo | 440 páginas |
| Exportar cita | BiBTeX EndNote RefMan |