A Practical Treatise On Railway Curves And Location : for Young Engineers : Containing a Full Description of the Instruments, the Manner of Adjusting Them, And the Methods of Proceeding in the Field, New And Simple Formulae for Compound And Reverse Curvin
A Practical Treatise On Railway Curves And Location : for Young Engineers : Containing a Full Description of the Instruments, the Manner of Adjusting Them, And the Methods of Proceeding in the Field, New And Simple Formulae for Compound And Reverse Curvin
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In our eReader you can find the full English version of the book. Read A Practical Treatise On Railway Curves And Location : for Young Engineers : Containing a Full Description of the Instruments, the Manner of Adjusting Them, And the Methods of Proceeding in the Field, New And Simple Formulae for Compound And Reverse Curvin Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book A Practical Treatise On Railway Curves And Location : for Young Engineers : Containing a Full Description of the Instruments, the Manner of Adjusting Them, And the Methods of Proceeding in the Field, New And Simple Formulae for Compound And Reverse Curvin
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To quickly assess the difficulty of the text, read a short excerpt:
is likewise inaccessible.
ARTICLE XV.
TO AVOID OBSTACLES IN THE LINE 0? CUBVB.
Let bJehhe the curve. We can either follow the tan- gents hd, dby or trace a parallel curve, g a, within the first ; which tracing is effected thus : — Set the instrument at h, the P. C, and offset any distance h g, at right angles to the tangent h d. It will be observed that as the dis- tance h g increases^ the distance g a decreases^ whilst the angle subtended hjga remains equal to that subtended 44 RAILWAY CURVES ...AND LOCATION.
by A 6 ; i. e., our deflexions on the offset curve stand unchanged, but the corresponding chords^ g f, /e, &c., are less than their equivalents, h ^, i A;, &c., along h h.
To find their length, Af, ihy &c., being equal to 100 feet, we have the proportion, ch : eg :: hiix'y i. e., R : rad. — hg i\ 100 feet : a:, where x symbols the un- known chord. Now set the transit at g^ turn into tangent parallel to A c2, and with the shortened chord, fix/ e a.
Rectangularly to the tangents at these points, and distant h g^ will be », A, h of the curve proper.
What to read after A Practical Treatise On Railway Curves And Location : for Young Engineers : Containing a Full Description of the Instruments, the Manner of Adjusting Them, And the Methods of Proceeding in the Field, New And Simple Formulae for Compound And Reverse Curvin?
You can find similar books in the "Read Also" column, or choose other free books by William Findlay Shunk to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
is likewise inaccessible.
ARTICLE XV.
TO AVOID OBSTACLES IN THE LINE 0? CUBVB.
Let bJehhe the curve. We can either follow the tan- gents hd, dby or trace a parallel curve, g a, within the first ; which tracing is effected thus : — Set the instrument at h, the P. C, and offset any distance h g, at right angles to the tangent h d. It will be observed that as the dis- tance h g increases^ the distance g a decreases^ whilst the angle subtended hjga remains equal to that subtended 44 RAILWAY CURVES ...AND LOCATION.
by A 6 ; i. e., our deflexions on the offset curve stand unchanged, but the corresponding chords^ g f, /e, &c., are less than their equivalents, h ^, i A;, &c., along h h.
To find their length, Af, ihy &c., being equal to 100 feet, we have the proportion, ch : eg :: hiix'y i. e., R : rad. — hg i\ 100 feet : a:, where x symbols the un- known chord. Now set the transit at g^ turn into tangent parallel to A c2, and with the shortened chord, fix/ e a.
Rectangularly to the tangents at these points, and distant h g^ will be », A, h of the curve proper.
What to read after A Practical Treatise On Railway Curves And Location : for Young Engineers : Containing a Full Description of the Instruments, the Manner of Adjusting Them, And the Methods of Proceeding in the Field, New And Simple Formulae for Compound And Reverse Curvin?
You can find similar books in the "Read Also" column, or choose other free books by William Findlay Shunk to read onlineMoreLess
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