Civil Engineering - Surveying - Discussion
Discussion Forum : Surveying - Section 4 (Q.No. 4)
4.
To set out a parallel from a given inccessible point to a given line AB, the following observations and made
Distance AB and angle PAM = a and angle PBA = b are measured where Mis a point on the line BA produced. The perpendicular to the desired parallel line from A and B are :
Distance AB and angle PAM = a and angle PBA = b are measured where Mis a point on the line BA produced. The perpendicular to the desired parallel line from A and B are :
Discussion:
4 comments Page 1 of 1.
Prakriti said:
8 years ago
Let PC be the length of perpendicular.
AB = AC + CB = PCcot(180-a) + PCcotb,
Thus, PC = AB/(cotb - cota).
AB = AC + CB = PCcot(180-a) + PCcotb,
Thus, PC = AB/(cotb - cota).
(2)
Bhavesh said:
8 years ago
How? Please explain.
Padmavathi said:
6 years ago
Nice, thanks @Prakriti.
Gajendra Raj Joshi said:
2 years ago
Thanks for explaining @Prakriti.
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