Question

1. Table overleaf (Q3) indicates a levelling survey carried out by students at the European University of Lefke.

1. Determine the reduced levels using the height of plane of collimation (HPC) method.
2. What is the misclosure?
3. Carry out the usual mathematical checks to determine if this misclosure is due to errors in computation.
4. Distribute the actual misclosure and obtain the corrected reduced levels.

Table Q3. Question 3

Back sight (m)	Intermediate sight (m)	Fore sight (m)	HPC (m)	Reducel Level (m)	Correction (m)	Corrected RL (m)	Remarks
1.506							TBM1 = 55.000 m
	1.747						Chainage point 0 m
	2.872	.					Chainage point 10 m
2.103		1.928					Change Point
	1.130						Chainage point 20 m
	0.511						Chainage point 30 m
	3.789						Chainage point 40 m
2.025		3.276					Change Point
	2.342						Chainage point 50 m
3.784		0.067					Change Point
	1.721						Chainage point 60 m
	0.681						Chainage point 70 m
	1.347						Chainage point 80 m
	0.756						Chainage point 90 m
	1.247						Chainage point 100 m
		1.871					TBM2

Answer 1