Selection of Design Alternative(s. The Consultant will identify and make rudimentary evaluations of potential design alternative concepts that would meet the Sponsor’s defined project objectives. These evaluations are not to be carried beyond the point of establishing the feasibility of each concept as a design alternative; only those significant environmental and geometric design constraints that bear on the feasibility should be identified. For each concept the Consultant will prepare rudimentary sketches of plan, profile, and typical section views which show: • On plan: proposed centerlines; pavement edges; curve radii and termini; and existing ROW limits. • On profile: theoretical grade lines; critical clearances; vertical curve data; grades; and touchdown points. • On typical section: lane, median, and shoulder widths; ditches; gutters; curbs; and side slopes. • Where necessary: important existing features. • Where pertaining to feasibility: significant environmental and geometric design constraints, labeled as such. These sketches will include only the minimum information needed to select design alternatives to be studied in further detail. The Consultant will meet with the Sponsor to discuss the concepts, using the sketches as discussion aids to describe the relative order-of-magnitude costs, advantages, disadvantages, and problem areas of each. From these concepts the Sponsor will select one, or in some cases more, design alternative(s) for further development.
Selection of Design Alternative(s. The Consultant will identify and make rudimentary evaluations of potential design alternative concepts that would meet the Sponsor’s defined project objectives. These evaluations are not to be carried beyond the point of establishing the feasibility of each concept as a design alternative; only those significant environmental and geometric design constraints that bear on the feasibility should be identified. For each concept the Consultant will prepare rudimentary sketches of plan, profile and typical section views which show: • On plan: proposed centerlines, pavement edges, curve radii and termini; and existing ROW limits. • On profile: theoretical grade lines; critical clearances; vertical curve data; grades; and touchdown points. • On typical section: lane and shoulder widths; ditches; gutters; curbs and side slopes. • Where necessary: important existing features. • Where pertaining to feasibility: significant environmental and geometric design constraints, labeled as such. These sketches will include only the minimum information needed to select design alternatives to be studied in further detail. The Consultant will meet with the Sponsor to discuss the concepts, using the sketches as discussion aids to describe the relative order-of-magnitude costs, advantages, disadvantages, and problem areas of each. From these concepts the Sponsor will select on, or in some cases more, design alternative(s) for further development.
