UNESCO-NIGERIA TECHNICAL & VOCATIONAL EDUCATION REVITALISATION PROJECT-PHASE IINATIONAL DIPLOMA IN CIVIL ENGINEERING TECHNOLOGY BASIC PRINCIPLES IN SURVEYING II COURSE CODE: SUG 102 YEAR I- SE MESTER 2 PRACTICALS/ Version 1: December 2008 3.0 TACHEOMETRIC SURVEY. 1. 3. WEEK 10-12. WEEK 7-9.0 SETTING OUT. WEEK 4-6. . 2.CIVIL ENGINEERING TECHNOLOGY BASIC PRINCIPLES IN SURVEYING II (SUG 102) PRACTICAL COURSE INDEX WEEK 1-3.0 TERTERIARY LEVELING.0 COMPASS TRAVERING.0 THEODOLITE TRAVERSE. 4. WEEK 13-15. produce the plan and make graphical adjustment. ink. Conduct a Field reconnaissance. . ranging pole. set squares. pencil. pegs. scale rule.PRACTICAL WORK FOR WEEK ONE – THREE. chain survey field book. drawing paper etc. EQUIPMENT : Prismatic compass. arrows. nails and bottle cork. protractor. steel tape. Figure 1. Set up the instrument. Run the compass survey round the figure. eraser. TITLE : Compass Traversing AIM : To Carry out compass traversing of a closed figure.1 : A steel measuring tape. Sketch a Reconnaissance diagram. linen tape. PROCEDURE (1) (2) (3) (4) (5) Select required instruments. 4 2 Figure 1.2 : Closed Traverse Network.(6) (7) (8) (9) (10) Read and book bearings. . Measure the distances and book. N 5 1 Start and end station. Reduce and compute the data Adjust the compass traverse by graphical method Plot the data on the drawing paper (using scale 1:500). 3 CONCLUSION: Draw the final network on the paper and check a diagonal using suitable scale. SIX.PRACTICAL WORK FOR WEEK FOUR . AIM : To carry out tertiary leveling. reduction to produce elevations of all permanent stations along a circuit of about 1km. ranging pole. (5) (6) (7) (8) Place a staff on the starting point and a staff where the interval terminates. leveling field book. pen. steel tape. read and note the readings. Observe the back staff. . nails and bottle cork. Set the level instrument and check the back sight and fore sight are approximately the same length. Reduce the readings. Observe the forward staff. TITLE : Tertiary Leveling. read and note the readings. EQUIPMENT: Level. etc. leveling staves. pegs. tripod. Procedure: (1) (2) (3) (4) Select instruments. arrows. linen tape. Conduct a Field reconnaissance Sketch a Reconnaissance diagram of the area. CONCLUSION: Summarize the final reduced levels in tabular from and comment on the closing error. foot plate. Horizontal distance P x = D = KS cos2 Ø + C cos Ø (i) . leveling staff. linen tape. arrows. TITLE : Tacheometric Surveying AIM : To Use theodolite along with staff to obtain distances and heights. With reference to the above figure. set squares.0 Inclined line of sight in stadia tacheometry. nails and bottle cork. drawing paper. scale rule. eraser etc. S Stadia lines M X RLx V θ hi P D Figure1. pen. pegs. tripod.PRACTICAL WORK FOR WEEK SEVEN – NINE. ranging pole. steel tape. EQUIPMENT: Theodolite. traverse survey field book. protractor. v = used if there is an angle of depression (ii) (iii) PROCEDURE: (1) (2) (3) (4) (5) (6) (7) (8) (9) (10) (11) Select instrument Conduct a Field reconnaissance Sketch the Reconnaissance diagram Set up the instrument at the instrument station Perform temporary adjustment Measure the height of instrument (hi) Set the telescope and the staff so that all the three stadia hairs intersect the staff Book the vertical circle reading and horizontal circle readings Read and book the three stadia hair readings Reduction of angles Compute the distances and reduced levels using the following formula. K = the multiplying constant of instrument. (ii) (iii) . Horizontal distance P x = D = KS cos2 Ø + C cos Ø (i) Vertical distance V = ½ K S sin 2Ø + C sin Ø Reduced level of X = RLX = RLP + hi ± V – m Where. usually 100 C = the additive constant of the instrument.Vertical distance V = ½ K S sin 2Ø + C sin Ø Reduced level of X = RLX = RLP + hi ± V – m Where. usually 0 S = the difference between the two stadia readings Ø = the vertical angle along the line of sight hi = the height of trunnion axis above point p m = the middle staff reading at X +v = used if there is an angle of elevation . using a suitable scale.v = used if there is an angle of depression CONCLUSION: Draw the plan on the paper.K = the multiplying constant of instrument. usually 100 C = the additive constant of the instrument. . usually 0 S = the difference between the two stadia readings Ø = the vertical angle along the line of sight hi = the height of trunnion axis above point p m = the middle staff reading at X +v = used if there is an angle of elevation . 2 : Wooden Pegs . eraser. protractor.1 Using the Theodolite. Compute and plot the traverse network on a drawing paper.TWELVE. tripod. linen tape. AIM : To carry out theodolite traversing of roads surrounding the school. scale rule. nails and bottle cork. pegs. EQUIPMENT : Theodolite. traverse field book. TITLE : Theodolite Traversing. ink. drawing paper etc. set squares pencil. FIGURE 2. pen. steel tape.PRACTICAL WORK FOR WEEK TEN . arrows. FIGURE 2. ranging pole. 3 : A measuring Tape.Figure 2. PROCEDURE : . Observe both face left and face right on the instrument. Compute the data and sketch the traverse.B D A A C Figure 2. (8) (9) (10) Measure the distances simultaneously along each traverse leg in turn. Sketch Reconnaissance diagram.4 : Open Travers. . (1) (2) (3) (4) (5) (6) (7) Select instruments Conduct a Field reconnaissance around the roads surrounding the school. Set up the instrument at the starting station. CONCLUSION: Draw the traverse network on the drawing paper and ink. Reduce the bearings. Perform temporary adjustment of the theodolite. Read and book the horizontal circle reading and vertical circle reading on both face left and face right of the instrument. nails and pen. steel tape. etc. tripod. TITLE : Sstting Out.building plan. EQUIPMENT: Theodolite. levelling staff. ranging pole. AIM : To set out a simple building plan (four corner) on the ground.profile board. 5000mm D 90⁰ 90⁰ C . scale rule. arrows .PRACTICAL WORK FOR WEEK THIRTEEN . pegs.FIFTEEN. Measure out the horizontal line DC from the plan and peg.DIAGONALS 5000mm 90⁰ A 90⁰ B BASE LINE PROCEDURE: (1) (2) (3) (4) (5) (6) (7) (8) (9) (10) (11) (12) (13) (14) (15) (16) (17) (18) Read and understand the drawings thoroughly. Align a ranging pole to the line of sight and place a ranging pole. Establish the two corners on the building Line (A and B). Transfer the equipment from D to point C and sight back to D. Adjust the horizontal circle bearing to read 00⁰ 00’ 00’’. Turn the instrument anticlockwise until angle 90⁰ 00’ 00’’ is obtained. Repeat steps (7-9) to give line CB. Transfer the equipment from A to point D and sight back to A. Turn the instrument anticlockwise until angle 90⁰ 00’ 00’’ is obtained. Align a ranging pole to the line of sight and place a ranging pole. Adjust the horizontal circle bearing to read 00⁰ 00’ 00’’. Measure out the horizontal line AD from the plan and peg. . Set up the Theodolite at the one corner (A) on the building line. Turn the instrument to sight a ranging pole at point (B). Join line AB and check the distance from the plan. Perform temporary adjustment of the Theodolite. Determine the base line/building by direct measurement. (20) Set up profile boards at each corner of the building. .(19) Check the diagonals. AC and BD. the exercise is accurate otherwise check work over for necessary corrections. if the same in lengths.
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