Chapter 2: Chain Surveying

pg-56, pb-1

In [1]:
from __future__ import division

import math

ag=5;
giv=0.03;

L=20;
l=(giv*L/(math.sin(ag*math.pi/180)));


AB=l;

BC=AB*(math.sin(ag*(math.pi/180)));
BC=BC/20;

print('max length of offset should be',l,'meters');

('max length of offset should be', 6.8842279474019135, 'meters')

ch-2 page-56, pb-2

In [2]:
from __future__ import division

import math


AD=AB=15;
ag=3;
AC=15*(math.cos(ag*(math.pi/180)))

CD=AB-AC
sc=10;

CD=CD/sc;

print('required displacement perpendicular to chain is',CD,'meters');


BC=AB*(math.sin(ag*(math.pi/180)));

BC=BC/sc;
print('displacement parallel ot chain is',BC,'meters');

('required displacement perpendicular to chain is', 0.0020556978681392835, 'meters')
('displacement parallel ot chain is', 0.07850393436441575, 'meters')