Common use of Topographic Surveying for Wallis Street and Intersecting Roadways Clause in Contracts

Topographic Surveying for Wallis Street and Intersecting Roadways. (Cat 6; Cond. II) a. Establish horizontal and vertical project control. Control shall be relative to the North American Datum of 1983 (NAD 83) and the North American Vertical Datum of 1988 (NAVD 88). b. For the roadway and ditches, obtain cross-sections at 100-foot intervals with grade breaks. Cross-sections shall extend 20 feet beyond the proposed right-of-way lines where accessible. Identify locations and elevations of physical features to include buildings, fences, walls, trees, sidewalks, driveways and driveway curbs, power poles, light poles, water meters, water wells, ponds, sprinklers, off-site drain pipe, etc. Horizontally and vertically locate existing utilities within, crossing, and adjoining project limits. Utilities will be located and tied based on visual evidence and utilities based on maps, plans, and marked by “One Call” within the project limits, flow line elevations, sizes, material types and directions of pipes will be obtained on storm sewer lines, sanitary sewer lines and culverts. The rim (top) and flow line elevations will be obtained on inlets, manholes, and drainage structures. c. The Surveyor will coordinate with pipeline companies, municipal utility districts (MUDs), homeowner’s associations (HOA’s), Fort Bend County, and private utility agencies to obtain locations of existing utilities and depths of existing pipelines and provide Level B Subsurface Utility Surveying. d. Prepare existing Topographic Survey Map of the Project certifying to a Cat. 6, Cond. II Topographic Survey to be delivered in PDF format. e. The 3D topographical survey base map and digital terrain model (DTM), surface triangular irregular network (TIN) will be created and delivered for the existing roadway using Geopak and Microstation.

Topographic Surveying for Wallis Street and Intersecting Roadways. (Cat 6; Cond. II) a. Establish horizontal and vertical project control. Control shall be relative to the North American Datum of 1983 (NAD 83) and the North American Vertical Datum of 1988 (NAVD 88). b. For the roadway and ditches, obtain cross-sections at 100-foot intervals with grade breaks. Cross-sections shall extend 20 feet beyond the proposed right-of-way lines where accessible. Identify locations and elevations of physical features to include buildings, fences, walls, trees, sidewalks, driveways and driveway curbs, power poles, light poles, water meters, water wells, ponds, sprinklers, off-site drain pipe, etc. Horizontally and vertically locate existing utilities within, crossing, and adjoining project limits. Utilities will be located and tied based on visual evidence and utilities based on maps, plans, and marked by “One Call” within the project limits, flow line elevations, sizes, material types and directions of pipes will be obtained on storm sewer lines, sanitary sewer lines and culverts. The rim (top) and flow line elevations will be obtained on inlets, manholes, and drainage structures. c. The Surveyor will coordinate with pipeline companies, municipal utility districts (MUDs), homeowner’s associations (HOA’s), Fort Bend County, and private utility agencies to obtain locations of existing utilities and depths of existing pipelines and provide Level B Subsurface Utility Surveying. d. Prepare existing Topographic Survey Map of the Project certifying to a Cat. 6, Cond. II Topographic Survey to be delivered in PDF format. e. The 3D topographical survey base map and digital terrain model (DTM), surface triangular irregular network (TIN) will be created and delivered for the existing roadway using Geopak and Microstation. f. Previous survey information collected by LJA will be utilized for reference and verification.