Never heard E called external ordinate before. Had to google what it was for my assignment and I couldn't find anything online. Thanks so much for your help! I always heard it called "External Distance" in class...
If you don't want to memorize the formula for E and M you can find them with simple trig. Solve for E first by solving the length of the hypotenuse of the large left side triangle then just subtract the radius. So E= (R/cos(I/2)) - R
4 years later I noted this also, but it should be M=Ecos(I/2), using the previous calculation for the external ordinate distance (E) not (T) Tangent Distance. Otherwise and excellent video, Thank you!
i just want to ask question about getting the tangent distance which is 210.38 ft. Why you did not convert the angle to degrees as what you did in getting the length of curve.?
dear god I finally found someone explaining this who doesnt speak broken english
Thank you Scott! Your videos are awesome, truly appreciate them.
Very clear! thank you so much pls make more videos.
Never heard E called external ordinate before. Had to google what it was for my assignment and I couldn't find anything online. Thanks so much for your help! I always heard it called "External Distance" in class...
Thank you very much. it is very easy to understand. it is a wonderful lecture. thank you Sir.
How do you find the I?
If you don't want to memorize the formula for E and M you can find them with simple trig. Solve for E first by solving the length of the hypotenuse of the large left side triangle then just subtract the radius. So E= (R/cos(I/2)) - R
Thank you very much you are a lifesaver
really great video but can u explain further for the calculation of bearings coordinates using tangential angles
there is a mistake in the end example in the formula for "M" it is T cos(I/2) not T tan (I/2). anyways it is solved correctly though.
4 years later I noted this also, but it should be M=Ecos(I/2), using the previous calculation for the external ordinate distance (E) not (T) Tangent Distance.
Otherwise and excellent video, Thank you!
Great
i just want to ask question about getting the tangent distance which is 210.38 ft. Why you did not convert the angle to degrees as what you did in getting the length of curve.?
cuz it'd be lame
Thank you! Very helpful.
good explanation
hi i am surveyor i need your help how i can contact you ? i am from kurdistan
How do you find the "I" or "Delta" angle when only given the Tangent, Degree of Curve, and Radius?
Since T=Rtan(I/2)
Therefore I=2tan^-1(T/R)
how to calculate horizontal curve for railway tracks
durga Mukesh
It was helpfull for me!.
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Thank you sir!.
Thank u.i understand it well now
thanku sir.
Very clear, Thank you sir !!
i am at 5:07(all the terms definitions) 5:14 (Horizontal curve Formulas)
Thanks sir sin cos tan formula
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Calculation for M is wrong, and formula is also wrong