ISLAMIC UNIVERSITY

Faculty Of EngineeringCivil Engineering DepartmentSurveying (1)

Report(6)Mapping a Longitudinal Section of Street : :

12009 2157 12009 1456 2477 12009 12009 1056 12009 2654

Supervisor : Eng. Ahmed El Hallaq

Day: Sunday. Date: 21-Nov-2010.Mapping a Longitudinal Section of StreetTools:

1) The level.2) Staff2) Measuring Tape.

Methodology:1. Marking the points on the street as we need to mapping a longitudinal section .2. We work to setting up the level in the suitable place where we can see many points. 3. We adjust the horizontality of the level.

4. Take the read staff held vertically on the first point back sight (BS). 5. Take the staff reading held vertically at points we can see of the level intermediate sight (IS). 6. When we cannot see the other point ,we consider the last point of intermediate sight (IS) to be foresight (FS). 7.We move the level to the place where we can see other point, and adjust the horizontality of the level again. 8. Take the staff reading on the first point after moving the level back sight (BS).9. Take the staff reading of other point Intermediate Sight (I S) .

10. Take the staff reading of the end point foresight (FS).Calculation:NotesDistance

(m)Elevation

(m)Fall

(m)Rise

(m)F.S (m)I.S (m)B.S (m)St

Bench Mark191.31B.M

Start Point018.890.111.420

1018.880.011.431

2018.820.061.492

3018.680.141.633

4018.550.131.764

5018.440.111.875

Interning Point6018.400.041.911.436

7018.330.071.507

8018.280.051.558

9018.250.031.589

10018.210.041.6210

11018.130.081.7011

12017.980.151.8512

End Point13017.890.091.9413

1.113.8519.392.74Sum

Rise & Fall Check :1) Number of BS reading = Number of FS reading = 2. OK.2) BS - FS = Elevation of last point Elevation of first point = Rise - Fall BS - FS = 2.74 3.85 = - 1.11 m.

Elevation of last point Elevation of first point = 17.89 19 = - 1.11 m.

Rise - Fall = 0 1.11 = - 1.11 m. OK.Result:

Comment:

The experiment too long and take along time .On this experiment we adjust the level easily .

17

_1354853829.xls1

18.89

18.88

18.82

18.68

18.55

18.44

18.4

18.33

18.28

18.25

18.21

18.13

17.98

17.89

1

Distance (m).

Elevation (m).

1

3 121

018.89

1018.88

2018.82

3018.68

4018.55

5018.44

6018.4 .

7018.33

8018.28

9018.25

10018.21

11018.13

12017.98

13017.89

140

2

3