A practical treatise on ... land and engineering surveying, Τόμος 341863 |
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Σελίδα vi
... cross levels . . 166 Levelling through a town . 167 Staking out a line 168 Levels above and below datum 171 Part of a line of levels , and the mode of keeping the book 172 Check levels . 173 Level book , No. 1 • ib . 174 " " 3 ib ...
... cross levels . . 166 Levelling through a town . 167 Staking out a line 168 Levels above and below datum 171 Part of a line of levels , and the mode of keeping the book 172 Check levels . 173 Level book , No. 1 • ib . 174 " " 3 ib ...
Σελίδα 52
... cross with a dovetailed groove at right angles , in which two small pieces are made to run easily up and down each way , to which is a beam ( similar to a beam compass ) with sliding sockets , one for the pen , pencil , or point , the ...
... cross with a dovetailed groove at right angles , in which two small pieces are made to run easily up and down each way , to which is a beam ( similar to a beam compass ) with sliding sockets , one for the pen , pencil , or point , the ...
Σελίδα 83
... cross it , and the number entered in the field - book ; and against that number on the chain , in the offset column , a mark denoting that a line is in- tended to go from or through that line , and in the direction shown , as thus O ...
... cross it , and the number entered in the field - book ; and against that number on the chain , in the offset column , a mark denoting that a line is in- tended to go from or through that line , and in the direction shown , as thus O ...
Σελίδα 90
... crosses the fence , at 596 it closes at 300 in ( 1 ) , which completes the field work . ( 4 In plotting the chain lines , first draw line 1 , mark off the length and stations thereon as at 300 and 1325 ; then describe the two triangles ...
... crosses the fence , at 596 it closes at 300 in ( 1 ) , which completes the field work . ( 4 In plotting the chain lines , first draw line 1 , mark off the length and stations thereon as at 300 and 1325 ; then describe the two triangles ...
Σελίδα 98
... crosses nearly at right angles . From c measure back 400 links to a , and fix flags at both points ; raise a perpendicular at c , and set off 300 links at d and fix a flag ; at a raise another perpendicular and set off 600 links at b ...
... crosses nearly at right angles . From c measure back 400 links to a , and fix flags at both points ; raise a perpendicular at c , and set off 300 links at d and fix a flag ; at a raise another perpendicular and set off 600 links at b ...
Άλλες εκδόσεις - Προβολή όλων
A Practical Treatise on ... Land and Engineering Surveying Henry S. Merrett Δεν υπάρχει διαθέσιμη προεπισκόπηση - 2015 |
A Practical Treatise On ... Land and Engineering Surveying Henry S Merrett Δεν υπάρχει διαθέσιμη προεπισκόπηση - 2018 |
Συχνά εμφανιζόμενοι όροι και φράσεις
A B C acres adjustment base line bubble calculated centre chain lines chord circle circumference circumferentor collimation column compass correct cross sections cube yards curve datum line described diameter Diff difference Ditto divided divisions draw the line equal fence field-book fifth column figure find the area fixed flag fore sights frustrum given ground height horizontal inches and decimals inclosure instrument intersecting length line A B logarithm manner mark measure method minutes multiply needle object Offsets in inches parallel plate parallelogram pencil perpendicular plotted poles Problem protractor quantity quotient Radius in chains right angles roods Rule scale secant sector segment sextant side A B sine slopes spirit level square links staff station straight edge subtract surface survey surveyor TABLE take the angle tangent points telescope theodolite tie line tracing paper transverse distance trapezium triangle vernier vertical whole
Δημοφιλή αποσπάσματα
Σελίδα 102 - All the interior angles of any rectilineal figure, together with four right angles, are equal to twice as many right angles as the figure has sides.
Σελίδα 66 - ... the rail; multiply the length by the breadth and the product by the height; then divide the product by two, and you have the number of bushels of shelled corn in the crib.