MANIPAL INSTITUTE OF TECHNOLOGY,(A Constituent Institute of MANIPAL UNIVERSITY)

Department of Civil EngineeringMANIPAL - 576 104, Karnataka, India.

Semester: III SEM

Subject (Name & code): SURVEYING-1 & CIE2104

Date of the Assignment: 26-08-2015

ASSIGNMENT- II…………………………………………………………………………………………………………………………………………………………………

1. Discuss briefly about the errors in offset. 2. A chain line AB is to be chained across an inaccessible land and building which just

intervenes to prevent chaining and ranging both. Chaining around is, however, possible. Explain how you do propose to solve the problem.

3. A river flowing from west to east. For determining the width of river, two points A and B are selected on the southern bank such that the distance AB = 100m. Point A is westwards. The bearings at a tree C on the northern bank are observed to be 40 and 340, respectively from A and B. Calculate the width of the river.

4. The bearings of the sides of a traverse ABCD are as follows. Compute the interior angles of the traverse.

line Fore bearing

AB N45°10’E

BC S60°40’E

CD S9°50’W

DA N80°40’W

a. Compute the interior angles of the traverse. b. Also convert the bearing from Quandrantal system to WCB system and find the

True bearings. Magnetic declination 5°W.5. The following bearings were taken in running a closed compass traverse while surveying

in Jhansi.

line Fore bearing Back bearing

AB 48°25’ 230°00’BC 177°45’ 356°0’

CD 104°15’ 284°55’DE 165°15’ 345°15’

EA 259°30’ 79°00’

i) State the stations which are affected by local attraction and by how much.ii) Determine the correct bearings.