POS MS FS a1 EN

Method Statement for Field Survey POS-MS-FS-A1-EN Noi Bai-Lao Cai Highway Project Package A1: Civil Works CONTENTS General - Description of Field Survey - 3 Setting Out of Control Points - 4 Setting Out of Construction Points - Field Survey for Construction Works - 10 Topographic Survey - 25 Method of Field Survey and Apparatus - 33 Survey Points to be Used - 34 Standard References - 35 Appendixes I Network for Control Points II Reference Coordinates of Control Points 42 III Table of Topographic Survey Coordinates 36 - 46 _ Revision A1, 18th May 2009 Page Noi Bai-Lao Cai Highway Project Package A1: Civil Works IV Plan Drawing of Topographic Survey V Inspection Sheet for Topographic Survey VI Certificates of Survey Equipments 248 VII Photographs of Ceramic Survey Point Marker Method Statement for Field Survey POS-MS-FS-A1-EN 157 245 - 257 Total: 258 pages General This method statement describes the method of Field Survey for NOI BAI - LAO CAI Highway Project - Package A1 such as setting out control points, construction points, survey for construction and topographic survey Definition of Key Word is as follows Base Point(s) : point that will be used as a base, GPS Point, Control Point, Construction Point can be a Base Point Bench Mark(s) : point which has known data Control Point(s) : point that will be used for setting road centerline, pier centerline, and Construction Point Construction Point(s): point that will be used for construction works such as bored pile, substructure, superstructure, bridge surface, and embankment works This point will be set out from Control Points GPS Point(s) : point that is given by the Employer which are GPS01, GPS02, GPS03B, GPS04B, GPS06, GPS07, GPS08 and GPS09 Total Station : a surveying instrument that can measure azimuth angle and distance All the survey work shall follow general specifications of the contract, standard 22TCN-262-2000 and 22TCN-263-2000 Description of Field Survey The description of Field Survey include following 4-kinds of survey works 1) Setting Out Control Points _ Revision A1, 18th May 2009 Page Method Statement for Field Survey POS-MS-FS-A1-EN Noi Bai-Lao Cai Highway Project Package A1: Civil Works 2) Setting Out Construction Points 3) Field Survey for Construction Work 4) Topographic Survey The minimum surveying personnel per one team is as bellow: Surveyor: Survey Assistant: person persons Setting Out of Control Points 3.1 General Control Points will be used as Base Points for setting out center of road, center of piers, center of structure, and Construction Points Control Points will be set out using GPS Points given by the Employer And GPS Points themselves are used as Control Points Refer to Network of Control Points (See Appendix I) Control Points newly set will have data of coordinates (N, E) and elevation as well 3.2 Accuracy of Field Survey Accuracy of the survey work applied shall be accordance with the general specificatios of the contract by the following table: Construction Surveying and Staking Tolerances Horizont a (mm) Staking Phase Control points 1/10,000 Centerline points (a) - (PC), (PT), (POT), and (POC) including references thereto Other center line points Cross-section points, slope stakes, and Vetical (mm) ±6 1/5,000 ±15 ±60 ±90 ±60 ±90 _ Revision A1, 18th May 2009 Page Noi Bai-Lao Cai Highway Project Package A1: Civil Works slope Method Statement for Field Survey POS-MS-FS-A1-EN stake references (b Culverts, ditches, and minor drainage structures ±60 ±30 Retaining walls ±30 ±15 Railroad crossing structures 1/5,000 ±15 Bridge substructure 1/5,000 ±15 Bridge superstructure 1/5,000 Clearing and grubbing limits ±300 - ±60 ±15 ±60 ±0.03 Roadway subgrade finish stakes Roadway finish grade stakes Note: ±6 (a) Center line points are point of curve (PC), point of tangent (PT) and point on curve (POC) (b) Take the cross sections normal to the centerline within ±1 degree (0.02 rad) 3.3 Setting Out Work 3.3.1 Method Before setting out, firstly the given GPS point shall be checked coordinate by GPS with Surveyor of Consultant and/or Engineer Basically transverse survey method will be applied for the Control Points Network Especially triangulation will be applied to the structure portion for Control Points Network The plan of Control Points Network is shown in Appendix II Adjustment for coordinate and/or meridian shall be considered with Engineer’s instruction Method of adjustment shall be proposed in the report of Control Point Network Survey, if necessary Locations that satisfy the conditions listed below will be the Control Points a) where heavy machines will not work during construction works b) stiff ground c) good perspective _ Revision A1, 18th May 2009 Page Noi Bai-Lao Cai Highway Project Package A1: Civil Works Method Statement for Field Survey POS-MS-FS-A1-EN d) not to be submerged during rainy season In addition, Control Points will be set on top of each pier after the erection work was finished Basically, the structure of Control Points is in accordance with Highway Survey Codes 22TCN263-2000; however, types of structure as below will be adopted considering the ground condition or surroundings Type 1: Type 2: Type 3: Type 4: For Stiff Ground Position of which elevation will be same as water level, though it will not be submerged Position which will be submerged during rainy season, and bad perspective On the Pier and on the Surface of the structures _ Revision A1, 18th May 2009 Page Method Statement for Field Survey POS-MS-FS-A1-EN Noi Bai-Lao Cai Highway Project Package A1: Civil Works TYPE TYPE 300 300 200 200 300 200 CRUSHED STONE CONCRETE CERAMIC MARKER 200 300 CONCRETE GL CERAMIC MARKER 05-09 100 350 CERAMIC MARKER 450 GL 70 30 CONCRETE ADC-22 400 TOP VIEW BAMBOO TYPE 55 2000 75 2000 BRICKS 1750 20 90 65 50 40 75 40 GL 55 CONCRETE 200 10 CERAMIC MAKER BAMBOO Figure Control Points (Type 4) on top of piers and on the surface of the structures will be set on the center of it or on parallel line of that center line Each of the Control Points will be drawn by cross line using carpenter’s ink pad, and it will be protected by coating with lacquer Although some of the surface of structure will be roughed finishing, surfacing by steel trowel will be done only for the Control Point area, and chipping will be executed after it is not necessary Direction line will be also drawn as same way _ Revision A1, 18th May 2009 Page Noi Bai-Lao Cai Highway Project Package A1: Civil Works Method Statement for Field Survey POS-MS-FS-A1-EN 3.3.2 Procedure Procedure for setting out on land is as follows Reconnaissance, location selection for Control Points Setting out stakes made of wood Confirmation that the sight has no problem with using transit Setting out points (casting concrete or stage erection by block as shown in fig 1) Execute triangulation or traverse survey using Total Station Decision of coordinates for each Control Point Elevation survey Decision of elevation for each Control Point Procedure for setting out on pier is as follows Points on pier will be on the centerline of structure In case of the first Control Points setting on pier, or in case of no Control Points on pier are not available, new Control Points will be set out by using original Control Points In case that there is available Control Points on pier, new Control Points will be set by using that Control Points After that, set the Total Station on the new Control Point, the distance and angle of the Control Points on land will be used for checking and set the centerline of structure as base line In case that Control Points are set after completion of pier erection, it will be confirmed as follows a) Cross distance between the Control Points and a Control Points on pier of next line by Steel Measuring Tape b) Setting of the Total Station on a newly made Control Point, and looking at the most far Control Point on centerline of structure, then Control Points among these Control Points will be confirmed whether they are on structure centerline or not c) If the results of a) and b) is good enough, structure centerline will be drawn on the front and top of nearest pier Right angle direction will be drawn on the top of nearest pier as well If necessary, the offset points for control points shall be set in order to check them and relocated them _ Revision A1, 18th May 2009 Page Noi Bai-Lao Cai Highway Project Package A1: Civil Works Method Statement for Field Survey POS-MS-FS-A1-EN 3.3.3 Checking Control Points will be checked by periodically after these are set a) Checking by eyes Control Points will be checked once weeks by eyes The matters for checking are whether there is a wheel track or trace of excavation, and whether there is relaxation or not b) Checking by field survey Control Points will be checked at once per months or at the time of Engineer’s instruction by traverse survey and/or triangulation method The period is March and September after rainy season ends The method of survey is same as setting Control Points and Control Points on bridge structure will be checked as well Relaxation of foundation will be checked especially after rain season ends If there is a Control Point that cannot be utilized any more, new Control Point will be set out again Setting Out of Construction Points 4.1 General Construction Points are utilized for actual construction work such as bored pile, cofferdam, pile cap, pier, superstructure, embankment and work for roads and bridge surface Construction Points will be set out based from Control Points 4.2 Accuracy of Field Survey Accuracy for Construction Points is same as those of Control Points 4.3 Setting out Work 4.3.1 Method Construction Points will be set out from Control Points including GPS Points First of all, Base Line will be set using Control Points and field survey for setting out Construction Points will be executed based on the Base Line using Total Station During the setting out work for Construction Points, checking will be done as follows a) Confirmation will be done using other Base Line b) Construction Points will be set on parallel line of bridge and roads centerline Total Station will be set on this line, and setting out will be executed with confirming the straightness for each Construction Point c) Confirmation of the straightness will be checked when every group of Construction Points for a Base Line ends, and more than groups of Construction Points for Base Lines will be checked at a time 4.3.2 Location _ Revision A1, 18th May 2009 Page Noi Bai-Lao Cai Highway Project Package A1: Civil Works Method Statement for Field Survey POS-MS-FS-A1-EN Location of Construction Points will be selected as the following for each works: Substructure and Embankment a) Stiff Ground, and the points where no heavy equipment working during construction works Offset points those are used for check piling work, excavation, cofferdam work, pile cap construction, pier erection, and road works will be set out b) Superstructure Control Points on each pier top will be used as Construction Points These points are used for check superstructure works such as setting bearing, girder and so on c) Bridge Surface Work Construction Points will be set on the top of girder completed with checking from Control Points on the ground and on pier 4.3.3 Checking Construction Points will be checked when using Each Construction Points will be arranged on a line; therefore, straightness will be checked from any Construction Points If displacement is found, the Construction Point will not be used, and new Construction Point will be set out again 4.3.4 Protection Construction Points will not be come out from ground, and they will be protected by stakes with thin wooden plates as shown below The point number and coordinates will be written on the thin wooden plates _ Revision A1, 18th May 2009 Page 10 Noi Bai-Lao Cai Highway Project Package A1: Civil Works Method Statement for Field Survey POS-MS-FS-A1-EN Field Survey for Construction Works In this section, methods of field survey are stated for each construction works as shown below 5.1 Bridge works 5.1.1 Substructure 1) Bored Pile 2) Excavation 3) Pile Cap Pier (at Base) 4) Pier (at Top) 5) 5.1.2 Superstructure 1) Bearing Girder Setting 2) 5.2 Underpass works 5.2.1 Substructure 1) Excavation 2) Bottom Slap Retaining wall, Pier, Inlet 3) 5.2.2 Superstructure 5.3 Roadworks 1) Embankment 2) Road Profile, Curb and Gutter 3) Drainage & Culvert 5.1 Bridge works 5.1.1 Substructure 1) Bored Pile _ Revision A1, 18th May 2009 Page 11 Method Statement for Field Survey POS-MS-FS-A1-EN Noi Bai-Lao Cai Highway Project Package A1: Civil Works Co-ordinate N o Control points Northing Easting GPS01 2346395.679 580300.946 ADC01 2346613.995 580169.489 ADC02 2346836.741 580112.020 ADC03N 2347205.129 580031.221 ADC03A 2347112.565 580180.314 ADC04 2347535.378 580047.715 ADC052A 2347365.446 580180.816 ADC052N 2347691.323 580175.910 ADC60 2347909.365 580186.132 ADC61N 2348288.338 580171.031 ADC54N 2348505.836 580118.853 ADC62 2348620.243 579945.545 ADC55A 2348896.960 580063.178 ADC55N 2348832.452 579846.683 ADC63 2348994.140 579815.254 ADC64 2349255.822 579606.764 ADC65N 2349394.318 579381.752 ADC66 2349460.258 579119.495 ADC66N 2349788.036 579119.495 ADC67 2349670.051 578850.944 ADC68 2349829.923 578633.639 ADC69N 2349645.092 578420.263 ADC70 2349343.664 578289.397 1 1 2 _ Revision A1, 18th May 2009 Page 41 Method Statement for Field Survey POS-MS-FS-A1-EN Noi Bai-Lao Cai Highway Project Package A1: Civil Works GPS02 2349038.563 578151.641 ADC71 2350088.084 578480.647 ADC72N 2350179.924 578316.186 ADC73N 2350194.303 578049.189 ADC73A 2350127.045 577961.938 ADC73B 2350279.840 577926.241 ADC74 2350465.926 577853.786 ADC75 2350659.102 577583.697 ADC76 2350776.727 577266.528 ADC77 2351004.449 577032.557 ADC78N 2350990.257 576777.430 ADC79 2351270.686 576608.868 ADC79N 2351096.126 576392.354 ADC21A 2351327.624 576241.461 ADC21B 2351556.861 576008.198 ADC21C 2351594.998 575759.834 ADC21D 2351801.598 575541.228 ADC21E 2351505.415 575347.954 GPS03B 2351605.540 575244.572 3 3 3 4 _ Revision A1, 18th May 2009 Page 42 Method Statement for Field Survey POS-MS-FS-A1-EN Noi Bai-Lao Cai Highway Project Package A1: Civil Works ADC22 2351675.492 575187.302 ADC22A1 2351594.028 575041.975 ADC22A1N 2351453.977 574959.022 ADC22C 2351371.796 574818.765 ADC22C1 2351579.165 574908.971 ADC22AN 2351491.527 574667.747 ADC65A 2351314.099 574398.644 ADC65B 2351000.967 574671.475 ADC22BN 2351670.984 574289.145 ADC57N 2351632.001 574065.256 ADC23 2351527.887 573889.583 ADC23A 2351399.780 573432.010 ADC58N 2351523.873 573645.454 ADC23AN 2351374.523 573313.451 ADC23B 2351571.172 573178.869 ADC23CN 2351410.030 572897.945 ADC31 2351379.739 572751.060 ADC32 2351719.469 572652.794 ADC33N 2351694.905 572351.524 ADC34N 2351959.735 572244.016 4 5 5 5 5 6 _ Revision A1, 18th May 2009 Page 43 Method Statement for Field Survey POS-MS-FS-A1-EN Noi Bai-Lao Cai Highway Project Package A1: Civil Works ADC36A 2352080.471 572135.241 ADC36 2351929.342 571947.819 ADC36N 2352086.541 571973.914 ADC37 2352248.027 571731.509 GPS04B 2352342.095 571380.476 ADC38A 2352465.833 571612.123 ADC38 2352594.848 571747.956 ADC39 2352725.033 571620.452 ADC40N 2352977.844 571353.191 ADC40AN 2352957.038 571148.653 ADC41 2353165.619 570818.958 ADC42N 2353382.806 570599.881 ADC43N 2353618.597 570353.407 ADC44N 2353810.796 570049.737 ADC45N 2353877.400 569855.509 ADC45A 2353924.178 569705.146 ADC46N 2354111.335 569554.965 ADC46A 2353951.341 569427.960 ADC47A 2354141.045 569151.091 6 6 7 7 7 7 7 8 _ Revision A1, 18th May 2009 Page 44 Method Statement for Field Survey POS-MS-FS-A1-EN Noi Bai-Lao Cai Highway Project Package A1: Civil Works ADC47N 2354315.255 569253.971 ADC48N 2354437.294 569041.656 ADC48A 2354589.131 569192.009 ADC49 2354617.381 568824.660 ADC49A 2354749.283 568617.921 ADC50N 2354921.286 568699.441 ADC51N 2355071.380 568427.795 ADC51A 2355265.398 568387.352 GPS06 2355298.571 568236.326 GPS07 2355467.094 568513.546 F1 2355574.413 568272.026 BDC01 2355722.575 568159.949 BDC02 2356111.509 568047.629 BDC03N 2356330.099 567711.546 BDC04N 2356705.635 567655.040 BDC05N 2357067.646 567492.776 BDC06N 2357416.020 567312.590 BDC07 2357673.232 567316.818 BDC08N 2357991.402 567105.449 8 8 8 8 9 9 9 9 9 9 0 _ Revision A1, 18th May 2009 Page 45 Method Statement for Field Survey POS-MS-FS-A1-EN Noi Bai-Lao Cai Highway Project Package A1: Civil Works 1 BDC09N 2358314.801 566933.004 BDC09A 2358267.867 567112.263 BDC09B 2358409.900 567094.770 BDC10 2358435.511 566872.535 BDC10A 2358660.261 566687.343 BDC11N 2358881.224 566622.116 GPS08 2358937.627 566505.992 BDC13 2358920.737 566357.333 BDC14 2359123.317 566325.765 F9 2359222.711 566197.705 BDC16N 2359409.261 566202.542 BDC17 2359618.019 566126.081 BDC18 2359774.127 565789.442 1 1 1 1 _ Revision A1, 18th May 2009 Page 46 Method Statement for Field Survey POS-MS-FS-A1-EN Noi Bai-Lao Cai Highway Project Package A1: Civil Works 1 BDC18A 2359967.175 565764.029 BDC19 2359940.839 565634.695 BDC20 2360175.639 565601.200 BDC21 2360284.930 565619.589 BDC22 2360479.352 565422.336 BDC22A 2360435.337 565159.948 BDC23 2360701.863 565281.846 BDC24 2360906.925 565031.842 BDC24A 2360871.907 564779.771 BDC25 2361032.471 564862.624 BDC25A 2361048.822 564444.447 BDC26 2361271.643 564641.855 BDC27 2361281.268 564335.843 1 1 1 1 1 2 1 2 _ Revision A1, 18th May 2009 Page 47 Method Statement for Field Survey POS-MS-FS-A1-EN Noi Bai-Lao Cai Highway Project Package A1: Civil Works BDC28N 2361493.336 564254.667 BDC29 2361708.029 564031.765 BDC30 2361875.275 563868.468 BDC30A 2361982.092 563888.391 BDC31 2362126.763 563685.742 BDC32N 2362202.253 563390.044 BDC33N 2362164.006 563039.499 BCD33A 2362317.584 562915.883 BCD33B 2362421.273 562893.873 GPS09 2362225.486 562673.928 CDC1 2362548.960 562639.305 CDC02A 2362593.686 562464.028 CDC02N 2362520.257 562429.333 3 1 3 3 _ Revision A1, 18th May 2009 Page 48 Method Statement for Field Survey POS-MS-FS-A1-EN Noi Bai-Lao Cai Highway Project Package A1: Civil Works CDC03N 2362676.900 562202.830 CDC4 2362846.776 561892.252 CDC5 2362851.119 561590.033 CDC6 2362846.427 561260.230 1 4 (Remarks) Above data is only for reference After completion of setting each point, they will be revised _ Revision A1, 18th May 2009 Page 49 Noi Bai-Lao Cai Highway Project Package A1: Civil Works Method Statement for Field Survey POS-MS-FS-A1-EN Appendix III Table of Topographic Survey Coordinates _ Revision A1, 18th May 2009 Page 50 Appendix IV Plan Drawing of Topographic Survey Appendix V Inspection Sheet for Topographic Survey Appendix VI Certificates of Survey Equipments Appendix VII Photographs of Ceramic Survey Point Marker ... _ Revision A1, 18th May 2009 Page 32 Noi Bai-Lao Cai Highway Project Package A1: Civil Works Method Statement for Field Survey POS- MS- FS- A1- EN Location of Center Points of Embankment and Bridges... measuring tape Wooden Stakes X will be removed after No ends _ Revision A1, 18th May 2009 Page 14 Method Statement for Field Survey POS- MS- FS- A1- EN Noi Bai-Lao... _ Revision A1, 18th May 2009 Page 16 Method Statement for Field Survey POS- MS- FS- A1- EN Noi Bai-Lao Cai Highway Project Package A1: Civil Works 5.1.2 Superstructure 1) Bearing Position of bearing