Common use of Conceptual Design Clause in Contracts

Conceptual Design. The goal of this task will be to develop a design that is approved by the CITY to develop a 50- percent design suitable for WSDOT approval at the end of July 2020. CONSULTANT will develop a conceptual design of the new sidewalk placement and curb extensions for the project limits. A horizontal alignment plan and typical roadway sections will be provided to comply with established design parameters and project goals for travel lane widths, pedestrian amenities, and intersection control and circulation. Any deviations from the parameters, goals, or design standards will be presented to and discussed with the CITY to provide clear direction for the design. CONSULTANT will prepare up to three conceptual designs for a pedestrian overlook for the project. A conceptual construction cost estimate will be developed for each design to determine the impact of the cost on the total project funding cost. The designs will be presented to the CITY for their preference at the conceptual design submittal. Develop a planning level construction cost estimate at this stage to compare against project funding. Submit conceptual design and planning level estimate to CITY for review and attend workshop. Assumption(s) • Landscape submittal will not be required. • Stormwater will not be shown with the concept. Deliverable(s) • Conceptual design sheets; electronically submitted in pdf format • Planning level construction cost estimate; electronically submitted in pdf format Subtask 7.2 50-Percent Design The 50-percent design will include the preparation of an engineering plan set that contains horizontal alignment plans and typical roadway sections based upon the approved concept design. Layout of the pedestrian overlook will be established. Temporary sediment and erosion control, demolition, and stormwater design plans will be included. Existing inlets that will be impacted by the proposed design will be removed and new inlets will be added to replace the existing. All new stormwater structures will connect into the existing stormwater drainage system. CONSULTANT will coordinate with private utilities to determine if any relocations are needed. The design will include the analysis and design of a structure to provide a pedestrian overlook adjacent to the new sidewalk. The design will incorporate retaining walls , if needed. Any deviations from WSDOT design standards will be listed in a design deviation memorandum. A construction cost estimate will be prepared based upon the 50-percent plans for the CITY to review and to compare against project funding. An outline of the construction specifications will be provided to the CITY. The 50-percent plans will be composed of the following plan sheets. • Cover Sheet, Vicinity Map, Drawing Index • General Notes, Legend, and Abbreviations • Right-of-Way and Survey Control • Demolition and Temporary Erosion and Sediment Control • Temporary Erosion and Sediment Control Details • Typical Roadway Sections • Roadway and Stormwater Plans • Preliminary Signing and Striping Plans • Preliminary Pedestrian Overlook Plan • Preliminary Landscape Plans and Plant List • Preliminary Temporary Traffic Control Plans • Illumination Site Plan Assumption(s) • Landscape design will be for the curb extensions only. • Stormwater report is not required. • Stormwater treatment is not required. • Stormwater detention/retention is not required • Hydrologic and hydraulic modeling is not required. Deliverable(s) • 50-percent plans; electronically submitted in pdf format • Preliminary construction cost estimate; electronically submitted in pdf format • Specifications outline; electronically submitted in pdf format Subtask 7.3 75-Percent Design CONSULTANT will incorporate comments from WSDOT and the CITY from the 50-percent submittal and develop plans to 75-percent level with complete construction details and notes. The design will include the structural detailing of the pedestrian overlook adjacent to the new sidewalk. The 75-percent plan set will be comprised of the following drawings. • Cover Sheet, Vicinity Map, Drawing Index • General Notes, Legend, and Abbreviations • Right-of-Way and Survey Control • Demolition and Temporary Erosion and Sedimentation Control • Temporary Erosion and Sedimentation Control Details • Typical Roadway Sections • Roadway and Stormwater Plan and Profiles • Roadway and Stormwater Details • Signing and Striping Plans • Pedestrian Overlook Plan • Structural Details for Pedestrian Overlook • Landscape Plans, Plant List, and Details • Temporary Traffic Control Plans • Illumination Plans and Details CONSULTANT will develop project-specific specifications in WSDOT format and perform a referential review of the plans and project cost estimate, checking for consistency, completeness, and accuracy of the documents. Perform a final independent QA/QC review by a senior engineer who has not been involved in the design. Compile and submit 75-percent plans to CITY for review and attend workshop. Deliverable(s) • 75 percent plans; electronically submitted in pdf format • Project construction estimate; electronically submitted in pdf format • One copy of specifications; electronically submitted in pdf format