TASKS TO BE COMPLETED. The State will request design surveys on an as needed basis. After the survey is complete and prior to design work commencing, the State will need to approve the topographic survey and the geometry of the existing centerline as per the as-builts and existing ROW maps. The Engineer’s Surveyor shall perform tasks including, but not limited to the following: 1. DESIGN SURVEYS a. Obtain or collect data to create cross-sections and digital terrain models to supplement the aerial mapping and voids caused by tree cover. b. Establish existing roadway centerline c. Locate and tie existing visible utilities. d. Locate and tie topographical features and existing improvements. e. Locate and tie all existing ROW markers, cross drainage structures, roadway centerline, bridge structures, etc. from 1000 feet prior to the beginning of the project to 1000 feet outside/past the DocuSign Envelope ID: 6DA01770-719C-4EFF-A344-425189FAC6FB end of the project limits and submit data to the State for review. If no ROW markers of drainage/bridge structures exist within 1000 feet outside the limits of the project, the Engineer shall contact the State for guidance. f. Provide details of existing drainage features, (e.g., culverts, manholes, etc.) including structure size and type, railing, erosion control measures, upstream and downstream flowlines. g. Include digital photographs of each structure including upstream and downstream ends of the structure, and upstream and downstream images just off the existing ROW. h. Locate wetlands up to 20 identified by the Environmental Task Leader i. Establish additional and verify existing control points Horizontal and Vertical control ties must be made and tabulated, to other control points in the vicinity, which were established by other sources such as, the National Geodetic Survey (NGS), and the Federal Emergency Management Agency (FEMA), and any other local entities as directed by the State. j. Locate and tie existing right-of-ways. k. Review right-of-way maps. l. Coordinate and locate up to 70 bore holes with the Engineer m. Update existing control data and prepare survey control data sheets (11” X 17”), as directed by the State for inclusion into a construction plan set. n. Use the existing Virtual Reference System in the State’s Paris District to facilitate surveying provided sufficient cellular coverage is available. In the event cellular coverage is not available, datum shall be based on static observations meeting the specifications for State Level 3 control points. Establish a minimum of one (1) GPS primary control point at one (1) mile intervals throughout the entire project limits up to a total of 42 GPS primary control points that includes 7 GPS primary control points for CSJ 0000-00-000, 16 GPS primary control points for CSJ 0045- 12-086, 2 GPS primary control points for CSJ 0000-00-000, and 17 GPS primary control points for CSJ 0000-00-000.. Preliminary locations are to be submitted to the State for review and approval before setting. Develop, submit for review, revise, seal and sign control point data sheets and plats. The proposed location of these additional GPS control points shall be coordinated with the State prior to establishing. o. Establish additional intervisible secondary project control points (capped iron rods) based on the GPS primary control points. The Surveyor shall set each control point outside the work area near the ROW line in an effort to protect the control points from being disturbed during construction. The Surveyor shall obtain and provide to the State, the XYZ coordinate data for the control points. The Surveyor shall set these additional control points on both side of the highway at PC and PT centerline points. The Surveyor shall ensure separation of control points do not exceed 1500 feet. p. The Engineer’s Surveyor shall also prepare a Survey Control Index Sheet and a Horizontal and Vertical Control Sheet(s), signed, sealed and dated by the professional Engineer in direct responsible charge of the surveying and the responsible RPLS for insertion into the plan set. The Survey Control Index Sheet shows an overall view of the project control and the relationship or primary monumentation and control used in the preparation of the project; whereas, the Horizontal and Vertical Control sheet(s) identifies the primary survey control and the survey control monumentation used in the preparation of the project. Both the Survey DocuSign Envelope ID: 6DA01770-719C-4EFF-A344-425189FAC6FB Control Index Sheet and the Horizontal and Vertical Control Sheet(s) must be used in conjunction with each other as a set. The State’s forms for these sheets can be downloaded from the State’s website. Overall view of the project and primary control monuments set for control of the project Identification of the control points Baseline or centerline Graphic (Bar) Scale North Arrow Placement of note “The survey control information has been accepted and incorporated into this PS&E” which shall be signed, sealed and dated by a Texas Professional Engineer employed by the State RPLS signature, seal, and date The State’s title block containing District Name, County, Highway, and CSJ The following information shall be shown on all Horizontal and Vertical Control Sheets: Location for each control point, showing baseline or centerline alignment and North arrow. Station and offset (with respect to the baseline or centerline alignments) of each identified control point. Basis of Datum for horizontal control (base control monument/benchmark name, number, datum). Basis of Datum for the vertical control (base control monument, benchmark name, number, datum). Date of current adjustment of the datum. Monumentation set for Control (Description, District name/number and Location ties). Surface Adjustment Factor and unit of measurement. Coordinates (State Plan Coordinates [SPC] Zone and surface or grid). Relevant metadata. Graphic (Bar) Scale. Placement of note “The survey control information has been accepted and incorporated into this PS&E” which shall be signed, sealed and dated by a Texas Professional Engineer employed by the State. RPLS signature, seal and date. DocuSign Envelope ID: 6DA01770-719C-4EFF-A344-425189FAC6FB The State’s title block containing District Name, County, Highway, and CSJ. 2. AERIAL MAPPING AND PHOTOGRAMMETRY a. The Engineer’s Surveyor shall set up to a total of 141 panel points that includes 19 panel points for CSJ 0000-00-000, 45 panel points for CSJ 0000-00-000, 17 panel points for CSJ 0046-10- 003, and 60 panel points for CSJ 0000-00-000 for the low altitude photogrammetry, and shall establish the horizontal and vertical coordinate geometry for each of the panel points. b. The Engineer’s Surveyor shall provide low altitude aerial mapping services necessary to produce photogrammetric mapping and Digital Terrain Model (DTM). The aerial mapping shall extend 500’ each side of the centerline and extend 1000’ west of West Division St in Blossom, TX, and 1000’ east of the Bowie County line. Surveys shall include color aerial photography, airborne GPS, analytical aerial triangulation, digital planimetric mapping (1”=50’ scale standard, 1’ contour interval), and color digital orthophotos (1”=50’ scale standard, 3” pixel resolution). Map data shall be delivered in both 2D and 3D MicroStation format and the TIN will be delivered in Geopak format. The services to be provided are based on providing data and imagery that will meet or exceed ASPRS Class 1 Accuracy Standards. The contours will have an RMSE not to exceed 0.33’, spot elevations and DTM points will have an RMSE not to exceed 0.17’, and planimetric features will have an RMSE not to exceed 0.5’ horizontally. c. The Engineer’s Surveyor shall acquire aerial LiDAR data using a full waveform laser scanner with an approximate acquisition density of 30 points per square meter. All aerial mapping work shall conform to the State Standards and Specifications of the National Map Accuracy Standards (NMAS) for a one (1.0) foot contour. Bare Earth LAS files will be provided to the State immediately after acquisition and processing.
Appears in 1 contract
Samples: Contract for Engineering Services
TASKS TO BE COMPLETED. After the survey is complete and prior to design work commencing, the State will need to approve the topographic survey and the geometry of the existing centerline established by the Engineer’s Surveyor as per as-built plans, existing ROW maps, and field survey information of existing roadway features. The Engineer’s Surveyor shall perform tasks including, but not limited to the following: The State will request design surveys on an as needed basis. After the survey is complete and prior to design work commencing, the State will need to approve the topographic survey and the geometry of the existing centerline as per the as-builts and existing ROW maps. The Engineer’s Surveyor shall perform tasks including, but not limited to the following:
1. DESIGN SURVEYS
a. Obtain or collect data to create cross-sections and digital terrain models utilizing conventional field survey to supplement the aerial mapping LiDAR and voids caused by tree cover.
b. Establish existing roadway centerlinecenterline DocuSign Envelope ID: D0894D65-6FF6-4E21-BE5E-BEEA53479086
c. Locate and tie existing visible utilities.
d. Locate and tie topographical features and existing improvements.
e. Locate and tie all existing ROW markers, cross drainage structures, roadway centerline, bridge structures, etc. from 1000 feet prior to the beginning of the project to 1000 feet outside/past the DocuSign Envelope ID: 6DA01770-719C-4EFF-A344-425189FAC6FB end of the project limits and submit data to the State for review. If no ROW markers of drainage/bridge structures exist within 1000 feet outside the limits of the project, the Engineer shall contact the State for guidance.
f. Provide details of existing drainage features, (e.g., culverts, manholes, etc.) including structure size and type, railing, erosion control measures, upstream and downstream flowlines, and photo documentation of each culvert end treatment.
g. Include digital photographs of each structure including upstream and downstream ends of the structure, and upstream and downstream images just off the existing ROW.
h. Locate Stake and survey wetlands up to 20 identified by the Environmental Task Leader
i. Establish additional and verify existing control points Horizontal and Vertical control ties must be made and tabulated, to other control points in the vicinity, which were established by other sources such as, the National Geodetic Survey (NGS), and the Federal Emergency Management Agency (FEMA), and any other local entities as directed by the State. Vertical control ties must be tied using differential leveling methods as described in the TxDOT Survey Manual.
j. Locate and tie existing right-of-ways.
k. Review right-of-way maps.
l. Coordinate and locate up to 70 bore holes with the Engineer before and after drilling operations as directed by the Engineer.
m. Perform hydrographic surveys as necessary on drainage ways, and as directed by the Engineer.
n. Update existing control data and prepare survey control data sheets (11” X 17”), as directed by the State for inclusion into a construction plan set.
n. o. Use the existing Virtual Reference System in the State’s Paris District to facilitate surveying provided sufficient cellular coverage is available. In the event cellular coverage is not available, datum shall be based on static observations meeting the specifications for State Level 3 control points. Establish a minimum of one seventeen (117) GPS primary control point at one (1) mile intervals throughout the entire project limits up to a total of 42 GPS primary control points that includes 7 GPS primary control points for CSJ 0000this project at approximate one-00-000, 16 GPS primary control points for CSJ 0045- 12-086, 2 GPS primary control points for CSJ 0000-00-000, and 17 GPS primary control points for CSJ 0000-00-000.. mile intervals. Preliminary locations are to be submitted to the State for review and approval before setting. Develop, submit for review, revise, seal and sign control point data sheets and plats. DocuSign Envelope ID: D0894D65-6FF6-4E21-BE5E-BEEA53479086 The proposed location of these additional GPS control points shall be coordinated with the State prior to establishing, requiring three site visits by the Engineer’s surveyor with the State to efficiently complete the locations. Prior to establishing these control points, Texas811 will be notified to line locate at the proposed monument location.
o. p. Establish additional intervisible secondary project control points (capped iron rods) based on the GPS primary control points. The Surveyor shall set each control point outside the work area near the ROW line in an effort to protect the control points from being disturbed during construction. The Surveyor shall obtain and provide to the State, the XYZ coordinate data for the control points. The Surveyor shall set these additional control points on both side of the highway at PC and PT centerline points. The Surveyor shall ensure separation of control points do not exceed 1500 feet. Elevations for these points shall be adjusted with a differential level loop. Prior to establishing these control points, Texas811 will be notified to line locate at the proposed monument location.
p. q. The Engineer’s Surveyor Engineer shall also prepare a Survey Control Index Sheet and a Horizontal and Vertical Control Sheet(s), signed, sealed and dated by the professional Engineer engineer in direct responsible charge of the surveying and the responsible RPLS for insertion into the plan set. The Survey Control Index Sheet shows an overall view of the project control and the relationship or primary monumentation and control used in the preparation of the project; whereas, the Horizontal and Vertical Control sheet(s) identifies the primary survey control and the survey control monumentation used in the preparation of the project. Both the Survey DocuSign Envelope ID: 6DA01770-719C-4EFF-A344-425189FAC6FB Control Index Sheet and the Horizontal and Vertical Control Sheet(s) must be used in conjunction with each other as a set. The State’s forms for these sheets can be downloaded from the State’s website. • Overall view of the project and primary control monuments set for control of the project project. • Identification of the control points points. • Baseline or centerline centerline. • Graphic (Bar) Scale Scale. • North Arrow Placement of note “The survey control information has been accepted and incorporated into this PS&E” which shall be signed, sealed and dated by a Texas Professional Engineer employed by the State • RPLS signature, seal, and date date. • The State’s title block containing District Name, County, Highway, and CSJ CSJ. DocuSign Envelope ID: D0894D65-6FF6-4E21-BE5E-BEEA53479086 The following information shall be shown on all Horizontal and Vertical Control Sheets: • Location for each control point, showing baseline or centerline alignment and North arrow. • Station and offset (with respect to the baseline or centerline alignments) of each identified control point. • Basis of Datum for horizontal control (base control monument/benchmark name, number, datum). • Basis of Datum for the vertical control (base control monument, benchmark name, number, datum). • Date of current adjustment of the datum. • Monumentation set for Control (Description, District name/number and Location ties). • Surface Adjustment Factor and unit of measurement. • Coordinates (State Plan Coordinates [SPC] Zone and surface or grid). • Relevant metadata. • Graphic (Bar) Scale. • Placement of note “The survey control information has been accepted and incorporated into this PS&E” which shall be signed, sealed and dated by a Texas Professional Engineer employed by the State. • RPLS signature, seal and date. DocuSign Envelope ID: 6DA01770-719C-4EFF-A344-425189FAC6FB • The State’s title block containing District Name, County, Highway, and CSJ.
2. AERIAL MAPPING AND PHOTOGRAMMETRYLiDAR
a. The Engineer’s Surveyor shall set up to a total of 141 panel points that includes 19 approximately 25 panel points for CSJ 0000-00-000, 45 panel points for CSJ 0000-00-000, 17 panel points for CSJ 0046-10- 003, the LiDAR and 60 panel points for CSJ 0000-00-000 for the low altitude photogrammetryimagery acquisition, and shall establish the horizontal and vertical coordinate geometry for each of the panel points.
b. The Engineer’s Surveyor shall provide low altitude aerial LiDAR mapping services necessary to produce photogrammetric mapping 2D Planimetric and Digital Terrain Model (DTM). The aerial LiDAR mapping shall extend 500’ each side of the centerline and extend 1000’ west east of Loop 286 West Division St in Blossom, TX, of Paris and 1000’ east west of the Bowie Xxxxx / Xxxxxx County line. Surveys shall include color aerial photography, airborne GPS, analytical aerial triangulationdirect imagery georeferencing, digital planimetric mapping (1”=50’ scale standard, 1’ contour interval), and color DocuSign Envelope ID: D0894D65-6FF6-4E21-BE5E-BEEA53479086 digital orthophotos (1”=50’ scale standard, 3” pixel resolution). Map data shall be delivered in both 2D and 3D MicroStation V8i format and the TIN will be delivered in Geopak GEOPAK format. The services to be provided are based on providing data and imagery that will meet or exceed ASPRS Class 1 Accuracy Standards. The contours will have an RMSE not to exceed 0.33’, spot elevations and DTM points will have an RMSE not to exceed 0.17’, and planimetric features will have an RMSE not to exceed 0.5’ horizontally.
c. The Engineer’s Surveyor shall acquire aerial LiDAR data using a full waveform laser scanner with an approximate acquisition density of 30 points per square meter. All aerial mapping work shall conform to the State Standards and Specifications of the National Map Accuracy Standards (NMAS) for a one (1.0) foot contour. Bare Earth LAS files will be provided to the State immediately after acquisition and processing.
Appears in 1 contract
Samples: Contract for Engineering Services
TASKS TO BE COMPLETED. The State will request design surveys on an as needed basis. After the survey is complete and prior to design work commencing, the State will need to approve the topographic survey and the geometry of the existing centerline as per the as-builts and existing ROW maps. The Engineer’s Surveyor shall perform tasks including, but not limited to the following: The State will request design surveys on an as needed basis. After the survey is complete and prior to design work commencing, the State will need to approve the topographic survey and the geometry of the existing centerline as per the as-builts and existing ROW maps. The Engineer’s Surveyor shall perform tasks including, but not limited to the following:
1. DESIGN SURVEYS
a. Obtain or collect data to create cross-sections and digital terrain models to supplement the aerial mapping and voids caused by tree cover.
b. Establish existing roadway centerline, graphically only.
c. Locate and tie existing visible utilities.
d. Locate and tie topographical features and existing improvementsimprovements within the project limits and the additional 3000’ on either end of the project.
e. Locate and tie all existing ROW markers, cross drainage structures, roadway centerlinecenterline (every 500’), bridge structures, etc. from 1000 feet 3000’ prior to the beginning Beginning of the project to 1000 feet 3000’ outside/past the DocuSign Envelope ID: 6DA01770-719C-4EFF-A344-425189FAC6FB end End of the project limits and submit data to the State state for review. If no ROW markers of or drainage/bridge structures exist within 1000 feet 3000’ outside the limits of the project, the Engineer shall contact the State for guidance.. The above requirements also apply to all State roads/highways a distance of 3000’ each way from the intersection of the project centerline on the following roadways XX 000, XX 000,XX 726, FM 1844 and FM 2275..
f. Provide details of existing drainage features, (e.g., culverts, manholes, etc.) including structure size and type, railing, erosion control measures, upstream and downstream flowlinesflowlines of 27 cross culverts and ± 140 driveway culverts.
g. Include digital photographs of each structure including upstream and downstream ends of the structure, and upstream and downstream images just off the existing ROW.
h. Locate wetlands up to 20 identified by the Environmental Task Leader
i. Establish additional and verify existing control points Horizontal and Vertical control ties must be made and tabulated, to other control points in the vicinity, which were established by other sources such as, the National Geodetic Survey (NGS), and the Federal Emergency Management Agency (FEMA), and any other local entities as directed by the State.
j. Locate and tie existing right-of-ways.
j. Create a 3D model of the substructure from the terrestrial scan of the existing bridge at Quail Drive.
k. Review right-of-way maps. Provided by the State.
l. Establish 70 aerial mapping targets.
m. Shall prepare the Right of Entry letters (XXX Letters sent under FC 130) for the collection of the cross culvert HEC-RAS channel sections, for the property owners along drainage channels only.
n. Coordinate and locate up to 70 bore holes with the EngineerEngineer up to 30 holes. DocuSign Envelope ID: F43CDC74-DA27-4A02-AC2A-90D8CB2811D6
m. o. Update existing control data and prepare survey control data sheets (11” X 17”), as directed by the State for inclusion into a construction plan set.
n. p. Use the existing Virtual Reference System in the State’s Paris Atlanta District to facilitate surveying provided sufficient cellular coverage is available. In the event cellular coverage is not available, datum shall be based on static observations meeting the specifications for State Level 3 control points. Note that most of the Atlanta District is located in the Verizon cellular network.
q. Establish a minimum of one four (14) GPS primary control point at one (1) mile intervals throughout the entire project limits up to a total of 42 GPS primary control points that includes 7 GPS primary control points for CSJ 0000-00-000, 16 GPS primary control points for CSJ 0045- 12-086, 2 GPS primary control points for CSJ 0000-00-000, and 17 GPS primary control points for CSJ 0000-00-000.. each project. Preliminary locations are to be submitted to the State for review and approval before setting. Develop, submit for review, revise, seal and sign control point data sheets and plats. The proposed location of these additional GPS control points shall be coordinated with the State prior to establishing.
o. r. Establish a minimum of eighteen (18) additional intervisible secondary project control points (capped iron rods) based on the GPS primary control pointspoints outside of final construction limits and verify six (6) existing GPS monuments for the project. The Surveyor shall set minimum/maximum distance outside of the project limits for the closest GPS primary control monument on each end of the project is 500’/1000’ respectively. Preliminary locations are to be submitted to the State for review and approval before setting Develop, submit for review, revise, seal and sign control point outside the work area near the ROW line in an effort to protect the data sheets and plats. The proposed location of these additional GPS control points from being disturbed during constructionshall be coordinated with the State prior to establishing. The Surveyor Digital levels shall obtain and provide to the State, the XYZ coordinate data for the control points. The Surveyor shall set these additional run through all control points on both side of along the highway at PC and PT centerline points. The Surveyor shall ensure separation of control points do not exceed 1500 feetcorridor.
p. s. The Engineer’s Surveyor Engineer shall also prepare a Survey Control Index Sheet and a Horizontal and Vertical Control Sheet(s), signed, sealed and dated by the professional Engineer engineer in direct responsible charge of the surveying and the responsible RPLS for insertion into the plan set. The Survey Control Index Sheet shows an overall view of the project control and the relationship or primary monumentation and control used in the preparation of the project; whereas, the Horizontal and Vertical Control sheet(s) identifies the primary survey control and the survey control monumentation used in the preparation of the project. Both the Survey DocuSign Envelope ID: 6DA01770-719C-4EFF-A344-425189FAC6FB Control Index Sheet and the Horizontal and Vertical Control Sheet(s) must be used in conjunction with each other as a set. The State’s forms for these sheets can be downloaded from the State’s websitewebsite.
t. Obtain or collect additional elevation data every 100’ at the centerline and 14’ either side of centerline throughout the limits of the project, including additional elevations at grade breaks, bridges and 50’ intervals along vertical curves. Provide additional elevations every 50’ including 400’ along the tangent at each end of the curves for all curves within these same limits.
u. Obtain and collect additional information along FM 726 and FM 1844. Limits of survey will extend 1500’ east along FM 726 and FM 1844. Data collection will include same information required along US 271. • Overall view of the project and primary control monuments set for control of the project • Identification of the control points • Baseline or centerline • Graphic (Bar) Scale • North Arrow DocuSign Envelope ID: F43CDC74-DA27-4A02-AC2A-90D8CB2811D6 • Placement of note “The survey control information has been accepted and incorporated into this PS&E” which shall be signed, sealed and dated by a Texas Professional Engineer employed by the State • RPLS signature, seal, and date • The State’s title block containing District Name, County, Highway, and CSJ The following information shall be shown on all Horizontal and Vertical Control Sheets: • Location for each control point, showing baseline or centerline alignment and North arrow. • Station and offset (with respect to the baseline or centerline alignments) of each identified control point. • Basis of Datum for horizontal control (base control monument/benchmark name, number, datum). • Basis of Datum for the vertical control (base control monument, benchmark name, number, datum). • Date of current adjustment of the datum. • Monumentation set for Control (Description, District name/number and Location ties). • Surface Adjustment Factor and unit of measurement. • Coordinates (State Plan Coordinates [SPC] Zone and surface or grid). • Relevant metadata. • Graphic (Bar) Scale. • Placement of note “The survey control information has been accepted and incorporated into this PS&E” which shall be signed, sealed and dated by a Texas Professional Engineer employed by the State. • RPLS signature, seal and date. DocuSign Envelope ID: 6DA01770-719C-4EFF-A344-425189FAC6FB • The State’s title block containing District Name, County, Highway, and CSJ. After the survey is complete and prior to design work commencing, the State will need to approve the topographic survey and the geometry of the existing centerline as per the as-builts and existing ROW maps. At that time the Engineer shall need to submit:
1. TxDOT GPS Control Point Data Sheets. (We have the Plats).
2. Copy of level loop through all primary and secondary control points.
3. Horizontal alignment reports for all existing survey centerlines within the project limits.
4. GPK file containing all field points tied, all chains, and calculated ROW breaks within the project limits.
5. Station offset report from the existing survey centerline chains to the found boundary/row monumentation, centerline of drainage structures, end of bridges, and intersecting State Highways/Farm Roads, etc.
6. Station offset report from the existing survey centerline chains to the centerline of road and edge of pavement. DocuSign Envelope ID: F43CDC74-DA27-4A02-AC2A-90D8CB2811D6
2. AERIAL MAPPING AND PHOTOGRAMMETRY
a. The Engineer’s Surveyor Engineer shall set up to a total of 141 approximately 70 panel points that includes 19 panel points for CSJ 0000-00-000, 45 panel points for CSJ 0000-00-000, 17 panel points for CSJ 0046-10- 003, and 60 panel points for CSJ 0000-00-000 for the low altitude photogrammetry, and shall establish the horizontal and vertical coordinate geometry for each of the panel points.
b. The Engineer’s Surveyor Engineer shall provide low altitude aerial mapping services necessary to produce photogrammetric mapping and Digital Terrain Model (DTM). The aerial mapping shall extend 500’ each side of the centerline and extend 1000’ west north of West Division St in Blossom, TX, SH 300 and 1000’ east south of the Bowie Uphsur/Xxxxx County line. Surveys shall include color aerial photography, airborne GPS, analytical aerial triangulation, digital planimetric mapping (1”=50’ scale standard, 1’ contour interval), and color digital orthophotos (1”=50’ scale standard, 3” pixel resolution). Map data shall be delivered in both 2D and 3D MicroStation V8i format and the TIN will be delivered in Geopak format. The services to be provided are based on providing data and imagery that will meet or exceed ASPRS Class 1 Accuracy Standards. The contours will have an RMSE not to exceed 0.33’, spot elevations and DTM points will have an RMSE not to exceed 0.17’, and planimetric features will have an RMSE not to exceed 0.5’ horizontally.
c. The Engineer’s Surveyor shall acquire Acquire aerial LiDAR data using a full waveform laser scanner with an approximate acquisition density of 30 points per square meter. All aerial mapping work shall conform to the State TxDOT Standards and Specifications of the National Map Accuracy Standards (NMAS) for a one (1.0) foot contour. Bare Earth LAS files will be provided to the State immediately after acquisition and processing.
Appears in 1 contract
Samples: Contract for Engineering Services
TASKS TO BE COMPLETED. The State will request design surveys on an as needed basis. After the survey is complete and prior to design work commencing, the State will need to approve the topographic survey and the geometry of the existing centerline established by the Engineers Surveyor as per the as-builts and built plans, existing ROW maps, and field survey information of existing roadway features. The Engineer’s Surveyor shall perform tasks including, but not limited to the following:
1. DESIGN SURVEYS
a. Obtain or collect data to create cross-sections and digital terrain models to supplement the aerial mapping extend 50LF beyond existing or anticipated proposed ROW limits utilizing a combination of conventional field survey and voids caused by tree covermobile LiDAR data collection.
b. Establish existing roadway centerline
c. Locate and tie existing visible utilities.
d. c. Locate and tie topographical features and existing improvements.
e. d. Locate and tie all existing ROW markers, cross drainage structures, roadway centerline, bridge structures, etc. from 1000 feet 1000’ prior to the beginning Beginning of the project to 1000 feet 1000’ outside/past the DocuSign Envelope ID: 6DA01770-719C-4EFF-A344-425189FAC6FB end End of the project limits and submit data to the State state for review. If no ROW markers of drainage/or drainage / bridge structures exist within 1000 feet 1000’ outside the limits of the project, the Engineer shall will contact the State for guidance.
e. Provide details of existing bridge structures.
f. Provide details of existing drainage features, (e.g., culverts, manholes, etc.) including structure size pipe size, pipe material, flow line elevations, flow direction, and type, railing, erosion control measures, upstream and downstream flowlinesphoto documentation of each culvert end treatment.
g. Include digital photographs of each structure including upstream The wetland areas are to be staked by the Engineer and downstream ends of the structure, and upstream and downstream images just off delineation surveyed by the existing ROWEngineer’s Surveyor.
h. Locate wetlands up to 20 identified by the Environmental Task Leader
i. Establish additional and verify existing control points points. Horizontal and Vertical control ties must be made and tabulated, to other control points in the vicinity, which were established by other sources such as, the National Geodetic Survey (NGS), and the Federal Emergency Management Agency (FEMA), and any other local entities as directed by the State.
j. i. Locate and tie existing right-of-ways.
k. j. Review right-of-way mapsmaps as provided by the State.
k. Locate boreholes before and after drilling operations as directed by the Engineer.
l. Coordinate Perform hydrographic surveys as necessary on drainage ways, and locate up as directed by the Engineer as to 70 bore holes with the Engineerlocation, length, and number of channel cross-sections. Said activity may require Right of Entry.
m. Update existing control data and prepare survey control data sheets (11” X x 17”), ) as directed by the State for inclusion into a the ROW map and construction plan set.
n. Use the existing TxDOT Virtual Reference Station (VRS) System in the State’s Paris Atlanta District to facilitate surveying provided sufficient cellular coverage is available. In the event cellular coverage is not available, datum shall be based on static observations meeting the specifications for State Level 3 control points. Note that most of the Atlanta District is located in the Verizon cellular network.
o. Establish a minimum of one four (14) GPS primary control point at one (1) mile intervals throughout the entire project limits up to a total of 42 GPS primary control points that includes 7 GPS primary control points for CSJ 0000-00-000, 16 GPS primary control points for CSJ 0045- 12-086, 2 GPS primary control points for CSJ 0000-00-000, and 17 GPS primary control points for CSJ 0000-00-000.. the project. Preliminary locations are to be submitted to the State for review and approval before setting. Develop, submit for review, revise, seal and sign control point data sheets and plats. The proposed DocuSign Envelope ID: D0E29F2F-2A8C-4E32-A9B8-8EFA82530B8F WAs Used PeopleSoft Contract No. 7032 Legacy Contract No. 19-6SDP5001 location of these additional GPS control points shall be coordinated with the State prior to establishing, requiring three site visits by the Engineer’s surveyor with the State to efficiently complete the locations. Prior to establishing these control points, Digtess will be notified to line locate at the proposed monument location.
o. p. Establish additional intervisible secondary project control points (capped iron rods) based on the GPS primary control points. The Surveyor shall set each control point outside the work area near the ROW line in an effort to protect the control points from being disturbed during construction. The Surveyor shall obtain and provide to the State, the XYZ coordinate data for the control points. The Surveyor shall set these additional control points on both side of the highway at PC and PT centerline points. The Surveyor shall ensure separation of control points do not exceed 1500 feet1500-ft. Elevations for these points shall be adjusted with a differential level loop. Prior to establishing these control points, Digtess will be notified to line locate at the proposed monument location.
p. q. The Engineer’s Surveyor Surveyors shall also prepare a Survey Control Index Sheet and a Horizontal and Vertical Control Sheet(s), ) for all additional control to be established. These sheets shall be signed, sealed and dated by the professional Engineer engineer in direct responsible charge of the surveying and the responsible RPLS for insertion into the plan set. The Survey Control Index Sheet shows an overall view of the project control and the relationship or of primary monumentation and control used in the preparation of the project; whereas, the Horizontal and Vertical Control sheet(s) identifies the primary survey control and the survey control monumentation used in the preparation of the project. Both the Survey DocuSign Envelope ID: 6DA01770-719C-4EFF-A344-425189FAC6FB Control Index Sheet and the Horizontal and Vertical Control Sheet(s) must be used in conjunction with each other as a set. The State’s forms for these sheets can be downloaded from the State’s website. The following information shall be shown on the Survey Control Index Sheet: • Overall view of the project and primary control monuments set for control of the project • Identification of the control points • Baseline or centerline • Graphic (Bar) Scale • North Arrow • Placement of note “The survey control information has been accepted and incorporated into this PS&E” which shall be signed, sealed and dated by a Texas Professional Engineer employed by the State • RPLS signature, seal, and date • The State’s title block containing District Name, County, Highway, and CSJ The following information shall be shown on all Horizontal and Vertical Control Sheets: • Location for each control point, showing baseline or centerline alignment and North arrow. • Station and offset (with respect to the baseline or centerline alignments) of each identified control point. • Basis of Datum for horizontal control (base control monument/benchmark name, number, datum). • Basis of Datum for the vertical control (base control monument, benchmark name, number, datum). • Date of current adjustment of the datum. • Monumentation set for Control (Description, District name/number and Location ties). • Surface Adjustment Factor and unit of measurement. DocuSign Envelope ID: D0E29F2F-2A8C-4E32-A9B8-8EFA82530B8F • Coordinates (State Plan Coordinates [SPC] Zone and surface or grid). • Relevant metadata. • Graphic (Bar) Scale. • Placement of note “The survey control information has been accepted and incorporated into this PS&E” which shall be signed, sealed and dated by a Texas Professional Engineer employed by the State. • RPLS signature, seal and date. DocuSign Envelope ID: 6DA01770-719C-4EFF-A344-425189FAC6FB • The State’s title block containing District Name, County, Highway, and CSJ.
2. AERIAL MAPPING AND PHOTOGRAMMETRY
a. The Engineer’s Deliverables • Digital Terrain Models (DTM) and the Triangular Irregular Network (TIN) files in a format acceptable by the State including updates to the DTM provided by the State and as per the State review • Maps, plans, or sketches prepared by the Surveyor showing the results of field surveys. • Computer printouts or other tabulations summarizing the results of field surveys. • Digital files or media acceptable by the State containing field survey data (ASCII Data files). • Maps, plats, plans, sketches, or other documents acquired from utility companies, private corporations, or other public agencies, the contents of which are relevant to the survey. • Field survey notes, as electronic and/or hard copies. • An 8 ½” X 11” survey control data sheet for each control point which shall set up to include, but need not be limited to, a total location sketch, a physical description of 141 panel points that includes 19 panel points for CSJ 0000-00-000the point including a minimum of two reference ties, 45 panel points for CSJ 0000-00-000surface coordinates, 17 panel points for CSJ 0046-10- 003a surface adjustment factor, elevation, and 60 panel points for CSJ 0000-00-000 for the low altitude photogrammetry, and shall establish the horizontal and vertical coordinate geometry for each of the panel points.
b. The Engineer’s Surveyor shall provide low altitude aerial mapping services necessary to produce photogrammetric mapping and Digital Terrain Model (DTM)datum used. The aerial mapping shall extend 500’ each side of the centerline and extend 1000’ west of West Division St A pre-formatted survey control data sheet form in Blossom, TX, and 1000’ east of the Bowie County line. Surveys shall include color aerial photography, airborne GPS, analytical aerial triangulation, digital planimetric mapping (1”=50’ scale standard, 1’ contour interval), and color digital orthophotos (1”=50’ scale standard, 3” pixel resolution). Map data shall be delivered in both 2D and 3D MicroStation Microsoft Office Excel 2010 format and the TIN will be delivered in Geopak format. The services to be provided are based on providing data and imagery that will meet or exceed ASPRS Class 1 Accuracy Standards. The contours will have an RMSE not to exceed 0.33’, spot elevations and DTM points will have an RMSE not to exceed 0.17’, and planimetric features will have an RMSE not to exceed 0.5’ horizontally.
c. The Engineer’s Surveyor shall acquire aerial LiDAR data using a full waveform laser scanner with an approximate acquisition density of 30 points per square meter. All aerial mapping work shall conform to the State Standards and Specifications of the National Map Accuracy Standards (NMAS) for a one (1.0) foot contour. Bare Earth LAS files will be provided to by the State immediately after acquisition State. • A digital or hard copy of all computer printouts of horizontal and processingvertical conventional traverses, GPS analysis and results, data including property descriptions with field notes and plats, ROW maps, and survey control data sheets. • Updated previous Geopak TIN and DAT files with new survey data obtained under this contract. • ASCII format file of all data points including point number, descriptions and XYZ coordinates. • A copy of all raw data files collected for this project. • Survey reports in a format requested by the State.
Appears in 1 contract
Samples: Contract for Engineering Services