A Treatise on the Principles and Practice of Levelling: Showing Its Application to Purposes of Railway Engineering and the Construction of Roads, &cVan Nostrand, 1870 - 157 pages |
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Page 3
... TABLE OF DITTO FOR DISTANCES IN CHAINS . LOGARITHMIC RULE FOR COMPUTING DITTO .. LEVELLING INSTRUMENTS . The Y Level , Troughton's Improved Level , Dumpy Level . Levelling Staves , 10 TABLE OF THE DIFFERENCE OF THE APPARENT AND TRUE ...
... TABLE OF DITTO FOR DISTANCES IN CHAINS . LOGARITHMIC RULE FOR COMPUTING DITTO .. LEVELLING INSTRUMENTS . The Y Level , Troughton's Improved Level , Dumpy Level . Levelling Staves , 10 TABLE OF THE DIFFERENCE OF THE APPARENT AND TRUE ...
Page 4
... TABLES - CUTTINGS AND EMBANKMENTS . . SLOPES , ETC ...... 91 95 DESCRIPTION OF THE CLINOMETER 96 TABLE OF SLOPES CORRESPONDING TO GIVEN ANGLES 98 ON SELECTING A LINE OF COUNTRY FOR A ROAD OR RAILWAY . 100 MR . TELFORD'S RULES FOR MAKING ...
... TABLES - CUTTINGS AND EMBANKMENTS . . SLOPES , ETC ...... 91 95 DESCRIPTION OF THE CLINOMETER 96 TABLE OF SLOPES CORRESPONDING TO GIVEN ANGLES 98 ON SELECTING A LINE OF COUNTRY FOR A ROAD OR RAILWAY . 100 MR . TELFORD'S RULES FOR MAKING ...
Page 12
... Tables show the reduction of the ap- parent to the true level , both for the curvature of the earth only , and also ... Table of the Difference of the Apparent and True Level for Distances in Miles . CORRECTION . Distance in Miles ...
... Tables show the reduction of the ap- parent to the true level , both for the curvature of the earth only , and also ... Table of the Difference of the Apparent and True Level for Distances in Miles . CORRECTION . Distance in Miles ...
Page 13
... Table of the Difference of the Apparent and True Level for Distances in Chains . CORRECTION . Distance in Chains . Curvature in decimals of feet . Curvature and Refraction in decimals of feet . 1234567 .000104 .000089 .000417 .0003.8 ...
... Table of the Difference of the Apparent and True Level for Distances in Chains . CORRECTION . Distance in Chains . Curvature in decimals of feet . Curvature and Refraction in decimals of feet . 1234567 .000104 .000089 .000417 .0003.8 ...
Page 14
... Table may be computed by the following rule , the same by which the Table itself was com- puted : Rule . To the arithmetical complement of the logarithm of the diameter of the earth , or 2.3788603 , add double the logarithm of the ...
... Table may be computed by the following rule , the same by which the Table itself was com- puted : Rule . To the arithmetical complement of the logarithm of the diameter of the earth , or 2.3788603 , add double the logarithm of the ...
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Common terms and phrases
a₁ adjustment application approximate point b₁ back sight back staff bench mark Bridge calculations centre line centre stake chain Civil Engineer clinometer Cloth column computed half width construction correct cross wires curvature curve cuttings and embankments datum line depth of cutting determined diagram difference of level direction distance Dover Castle Drawing Dumpy Level earth edition engravings equal example feet Folkstone foot fore sight formula forward reading forward station give ground Guns Gunter's chain horizontal line hypothenuse Hypsometry Illustrated inches inclination inclined plane instrument Iron J. P. WHITNEY John Macneill length line A B lines of railway mean height measured method middle area miles object glass observation obtain parallax perpendicular placed quantity radius reduced levels represent result road side slope spirit-level Steam stones STRENGTH OF MATERIALS subtracted superelevation Survey surveyor Tables tangent telescope theodolite tion U. S. Navy Water wood-cuts
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