09-26-16-R - Laserfiche WebLink

Home Browse Search

2 3. CROSS-SECTION DATA Provide cross-section point data at 50 foot intervals, all driveway locations and where the topography changes between 50 foot stations. At a minimum the cross section data should extend 10 feet beyond the right-of-way. As necessary due to the topography changes beyond the right of way, additional shots may be necessary. At driveway locations the cross sectional data should extend a minimum of 25 feet back. Included in the cross sectional data should be existing street centerline, roadway edges (top and bottom curb shots), top and bottom of retaining walls and every change in grade of the cross section. Enough shots must be taken to provide an accurate and complete TIN. 4. TOPOGRAPHIC FEATURES Provide shot data for all topographic features including but not limited to trees (within 25 feet of the edge of the roadway), treeline, mailboxes, driveway edges, landscape edges, private and public utility locations, house corners adjacent to street reconstruction, roadway edges, street signs, property corners, light poles, flag poles, bridges, water surfaces, and retaining walls. Locate and provide shot data for all property corners adjacent to the street construction. Utilizing CAD software that is compatible with the latest version of AutoCAD, create the base map for the project. The base map should be created to show all topographic features from the field data. Create a TIN model for the project area and create an AutoCAD layer for contours. The consultant may use their standard linetypes and symbols. Upon completion of the project, electronic files shall be provided to the City, along with plot files or other supporting data. 5. PRELIMINARY LAYOUT Utilizing CAD software that is compatible with the latest version of AutoCAD, create the proposed project layout. The trail is expected to be a minimum of 8 feet wide with a bituminous surface. The trail design should meet state aid design standards as well as MnDNR design standards. Along with the preliminary layout an estimate of construction costs will be provided to city staff. Additionally, an opinion on potential phasing of the project and if there are any options to accelerate the construction schedule to allow for all or a portion of the trail to be constructed in 2017 should be provided 6. WETLAND DELINEATION / WETLAND PERMITING Wetlands exist along the proposed route. The construction may impact some wetlands and therefore a complete delineation along the route needs to be prepared. Additionally, any wetland impacts as a result of the preliminary design needs to be permitted through the Wetland Conservation Act (WCA) and possibly by the Army Corps of Engineers. A complete permit application for any permits needs must be prepared and processed as part of this item. 7. FLOODPLAIN / FLOOD FRINGE DETERMINATION There are potentially Floodplain / Flood Fringe issues related to this trail as well. These impacts need to be quantified and permitted if applicable. 8. PROJECT MEETINGS / CITY COUNCIL MEETINGS The project will require a number of meetings to engage the public in the design, coordinate with various agencies, coordinate with city staff, and obtain approval from the City Council. The engineer is expected to conduct and participate in all necessary meetings to see the project thru to a successful completion.