ELEMENTARY SURVEYING FIELDMANUAL FIELD WORK NO. 7 PROFILE LEVELING CE120-0F / A1 SUBMITTED BY: NAME: STUDENT NO.: GROUP NO. 4 DATE OF FIELD WORK: AUGUST 12, 2014 DATE OF SUBMITTION: AUGUST 19, 2014 SUBMITTED TO: PROFESSOR: ENGR. CERVANTES GRADE 535 99. GROUP NO.54 99.51 101.56 1.345 1.37 1.2 1.35 1.45 101.125 1.575 99.55 99.64 99.235 1.52 1.625 99.535 99.96 TP 1 99. 2014 TIME: 8:30AM – 10:30AM WEATHER: SUNNY A.515 99.535 1.35 101.495 1.54 1.4 1. CERVANTES PROFILE LEVELING STATION BM-1 0+010 0+020 0+030 0+040 0+050 0+060 0+070 0+080 0+090 0+100 0+110 0+120 0+130 0+140 0+150 0+160 0+170 0+180 0+190 0+200 0+210 0+220 0+230 0+240 0+250 BS 1.905 99.675 TP 2 99.58 1.285 1.575 1.575 1.18 ELEVATION REMARKS 100 100.305 FS IFS 1.87 99.675 99. 7 PROFILE LEVELING FINAL DATE SHEET FIELD WORK 7 PROFILE LEVELING DATE: AUGUST 12.705 TP 5 99.555 99.57 1.505 99.48 101.035 1.4 1.305 HI 101.025 100.02 99.765 99.5 lowest (TP 4) 99.385 1.FIELD WORK NO.5 1.5 1.: 4 LOCATION: INTRAMUROS GROUND PROFESSOR: ENGR.265 1.725 Page | 2 .905 1.715 99.55 1.55 TP 3 99.475 99.955 99.43 100.49 1.58 1.28 1.255 1. 47 1.455 1.FIELD WORK NO.665 1.73 99.545 1.385 1.42 ELEVATION REMARKS 99.955 99.1 TP 8 100.455 1. 100.48 1.53 101.075 100.455 1.41 1.445 1.57 101.255 100.135 100.985 TP 7 99.37 1.46 1.38 1.535 1.49 101.025 100.155 100.115 100.21 100.505 1.455 1.345 1.525 101.485 1.53 1.855 99. 7 PROFILE LEVELING STATION 0+260 0+270 0+280 0+290 0+300 0+310 0+320 0+330 0+340 0+350 0+360 0+370 0+380 0+390 0+400 0+410 0+420 0+430 0+440 0+450 0+460 0+470 0+480 0+490 BM-2 BS HI FS 1.32 Page | 3 .54 1.485 1.74 1.995 100.51 1.21 TP 9 100.2 100.55 1.295 highest elev.005 100.78 99.5 1.91 99.92 99.54 1.46 1.885 99.2 100.865 TP 6 99.14 100.35 IFS 1. 025 m Elev.905 m + 1. 7 PROFILE LEVELING B.305 m Elev.0+010 = HIBM-1 – IFS0+010 Elev.28 m Elev. of TP1 = 101. of the Point + BS HIBM-1 = 100 m + 1.905 m HITP1 = Elev. of TP1 = 99.305 m – 1.35 m HITP1 = 101.4 m Elev.0+010 = 101.0+010 = 100. of TP1 = HIBM-1 – FSTP1 Elev. of the PointTP1 + BSTP1 HITP1 = 99.255 m Page | 4 .305 m HIBM-1 = 101.305 m – 1. COMPUTATIONS: HIBM-1 = Elev.FIELD WORK NO. Page | 5 . SKETCH This picture was taken when the instrument man together with the recorder took the measurement of the elevation of ground points from the rod man. 7 PROFILE LEVELING C.FIELD WORK NO. Page | 6 . 7 PROFILE LEVELING This photo was taken when the tape man measured a total distance of 500m using pace factor.FIELD WORK NO. you find the elevations of points placed at short measured intervals along a known line. a broken line. Many different types of surveys can be used depending on the desired results. highway or canal. The operations involved in determining the elevation of ground surface at small spatial interval along a line is called profile leveling. For planning purposes they are used to provide the information needed to develop the maps. such as the centre-line of a water supply canal or the lengthwise axis of a valley.1). The purpose of profile leveling is to determine the changes in the elevation of the ground surface along a definite line. and thus to obtain the accurate outline of the surface of the ground. charts. and elevation for the construction of those structures. Layout is used to establish the boundaries. You find elevations for cross-sections with a similar kind of survey. or a series of straight lines connected by curves. above or below the surface of the earth. The instrument is to be Page | 7 . and drawings necessary to lay out buildings. as in the case of a transmission line or sewer. as in case of a railroad. Profile leveling is the operation in which the object is to determine the elevation of points at known distance apart along a given line. Profile leveling is a method of surveying that has been carried out along the central line of a track of land on which a linear engineering work is to be constructed/ laid. They can also be used for layout. In profile leveling. The route along which a profile is run may be single straight line. roads. In carrying out profile leveling. It is called the longitudinal leveling or sectioning.FIELD WORK NO. drains. a level is placed at a convenient location (say I1) not necessarily along the line of observation (Figure 14. 7 PROFILE LEVELING DISCUSSION Leveling is the process of determining the elevation of points on. Differential and profile leveling rank next to the measurement of distance in importance as a surveying technique. Differential and profile leveling are two surveying methods that are very useful for agricultural and horticultural projects. They are both useful for planning and layout of projects. as in case of a short sidewalk. etc. lines. observations are started from TP1 and then at regular intervals (say at 5. such as that at X. The distances as well as direction of lines are also measured. 2. The instrument is then repositioned to some other convenient location (say I2). After proper adjustment of the instrument. observations are taken at regular intervals (say at 1. say TP2.M. Profile leveling Page | 8 .FIELD WORK NO. 3. 6 etc) terminating at another turning point. Staff readings are also taken at salient points where marked changes in slope occur. 7 PROFILE LEVELING positioned in such a way that first back sight can be taken clearly on a B. Then. 4) along the central line and foresight to a properly selected turning point (say TP1). Also check first if the precise level is completely perpendicular to the ground before recording the measurement to lessen the error that might be acquired. human errors and instrumental errors. 7 PROFILE LEVELING CONCLUSION On this field work. is/are defective. The elevation of ground points were then graphed or plotted to a millimeter graph for illustrative purposes. Based on the data gathered.FIELD WORK NO. Team work is also required for this experiment because everyone has their assigned task to do to finish the field work on time. Using a plumb bob is also recommended to see if the leveling rod is perpendicular to the ground. While instrumental errors include if the instrument/s used for getting the data in the field work. It is recommended to have patience in doing the field work because this field work has so much part and a lot to be done. Follow the instructions on the manual carefully to avoid errors. According from the lecture being discussed. if a roadway is totally elevated evenly. Human errors include the reading of measurements of the leveling rod even if it was not completely perpendicular from the ground and measuring the distance inaccurately by using our own pace factor to measure. and also we tried plotting the profile along the center line of the road using precise level and leveling rod. the elevation measurements should all be equal from each other. which is precise level for this field work. we tried to determine the elevation of ground points on the center of the roadway at equal intervals. Page | 9 . the elevation of ground points measurement taken were not far from assumed elevation of BM-1 from sea level horizontal which was 100m. The common sources of error on this field work are the inaccurate reading of measurements. FIELD WORK NO. you can use profile leveling also in bridges for balancing and centering and lastly you can use it in railroads to obtain a balanced surface. How can you show the data gathered from a profile survey is correct and accurate? Show it in tabulated or graphed manner because you will see the elevation properly. Page | 10 . first for the targeted roads to acquire non sloping roads and as much as possible to the horizon. Enumerate the different use of the profile roadway. And also when measuring the ground use break the tape method and be sure that the poles are in horizontal position. Second. Uses of profile leveling are. 7 PROFILE LEVELING QUESTIONS AND PROBLEMS: 1. Always use the plumb bobs and level the bubble in the precise level. And give some points that this area has a higher elevation. 2.