Question

Site Surveying

 

Learning outcomes:

You will be able to analyse and synthesise by the provision of a critical review, a specified problem and synthesise a possible solution, organise, interpreting published material and draw out conclusions

 

Assignment – Final Assessment

 

INSTRUCTIONS TO CANDIDATES

 

• You Should Attempt all four questions.

 

• Answers to be written in separate sections. There is no need to produce a professional report for this final assessment.

 

• All Surveying sheets (Height of Collimation, Rise and Fall and FL/FR) are on excel (attached also).

 

• Please make it clear which questions you are answering.

 

• Create a front sheet which gives the module title, module number, your student number, title of the document (Final Assessment) and name of the Module leader.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

The following readings were taken (in sequence) by a survey team (all values in metres)

 

 

OBM on Stafford Bridge (AOD 146.332) Gas Cover A Gulley A	1.254 2.362 2.101
Manhole Cover A in road Change Point 1	1.655
Manhole Cover A in road Change Point 1	1.821
Manhole Cover B Bridge Soffit Centre of bridge (in road)	1.556 +3.108 1.688
Manhole Cover C	1.742
Manhole Cover D	1.476
Gas Cover B Change Point 2	1.664
Gas Cover B Change Point 2	1.451
Manhole Cover E	1.915
Manhole Cover F Change Point 3 Manhole Cover F Change Point 3 OBM on Stafford Bridge	1.711 1.764 1.360

 

(a)

On the Booking Sheet provided book all the readings and calculate the Reduced Levels for all of the given points. (Use either Height of Collimation method or Rise and Fall, but no requirement to use both methods).

40%

 

 

(b)

 

Provide information how you could check your work.

20%

 

 

(c)

 

 

(d)

 

Please state if the Levelling work is of sufficient accuracy, and why.

 

Explain what use the above level survey would be used for within the Civil Engineering industry.

20%

 

 

20%

 

 

 

 

 

 

2

(a)

The Two peg test should always be carried out regularly.

 

Explain what this test is and how it is carried out.

30%

 

 

 

 

 

(b)

Traversing is the traditional method of carrying out a plan control survey.  There are basically three types of traverse.

 

Describe the three methods and give an example in which you would use each method.

30%

 

 

 

(c)

 

Angle and distance measurements are now normally made with total stations when carrying out a field survey.

 

Explain how you would complete a field survey using a Total Station for a section of the University. State the procedure you would use and how you would record your readings

 

 

 

 

 

 

40%

 

 

 

3

Note FL = Face Left,   FR = Face Right

 

 

(a)

Calculate the following angles from the table of FL/FR readings below

1          YWX =

2          ZWY =

3          XWZ =

 

Station W
Horizontal circle
Point	Face left			Face right			Mean			Reduced angle
X	65	21	08	245	20	42
Y	155	04	59	335	05	15
Z	221	30	39	41	30	29

 

 

 

 

 

 

 

 

 

20%

 

 

(b)

Calculate the following angles from the table of FL/FR readings below

1          YWX =

2          ZWY =

3          XWZ =

 

Station W
Horizontal circle
Point	Face left			Face right			Mean			Reduced angle
X	256	00	10	75	59	42
Y	21	45	31	201	45	01
Z	131	18	51	311	19	18

 

 

20%

 

 

(c)

 

 

 

 

 

 

 

 

 

 

(d)

Calculate the Eastings and Northings from the following bearings and distances with all corrections.

 

Line AB = 65.914m; Bearing = S13⁰ 14’ 08”E

Line BC = 53.099m; Bearing = S22⁰ 59’ 34”W

Line CD = 28.222m; Bearing = S83⁰ 13’ 29”W

Line DE = 77.318m; Bearing = N33⁰ 04’ 31”W

Line EF = 85.771m; Bearing = N47⁰ 22’ 56”E

Line FA =  14.248m; Bearing = S62⁰ 55’ 25”E

 

 

Explain why it is necessary for a surveyor to carry out a traverse using the Face Left/Face Right method.

 

 

 

 

 

 

 

40%

 

 

 

20%

 

 

 

4

Calculate the Whole Circle Bearings and Quadrant Bearings for all stations on the traverse below.

100%