requirements contracts for engineering design and related services ...

11. The Consultant shall prepare a technical supplement containing all recommendations of the Embankment
Protection Letter Report, including copies of all sketches, maps, analyses, minutes of meetings, correspondence, etc.,
generated in conjunction with the Embankment Protection Study. This supplement shall be incorporated as an Appendix
to the Design Report.
4.10 SCHEMATIC GEOMETRIC DESIGN
1. Under this task the Consultant shall prepare Schematic Geometric Design alternatives for the project street(s). The
Schematic Geometric Designs shall indicate the proposed geometry of the roadway(s) including roadway widths, traffic
lane(s), bike lane(s), bus lane(s), parking lane(s) and sidewalk width(s), pedestrian mall areas, mathematized alignment
data that is sufficient to define alignment and layout in field, and pedestrian crosswalk locations. The Schematic Geometric
Designs shall include the preliminary design of street grades and street drainage. The Schematic Geometric Designs shall
indicate all necessary provisions for the channelization of traffic including all necessary pavement markings for vehicular
lanes delineation and lane widths, pedestrian crossings and channelization and shall be developed within the limits of the
mapped right-of-way. The Schematic Geometric Design Alternatives shall include alternate roadway and sidewalk widths,
to accommodate traffic in the project street(s), and shall indicate any distinctive roadway and sidewalk treatments
proposed including, but not limited to special pavements, lighting, bollards, benches and landscaping.
The Consultant shall make a complete photographic record of the project area in order to illustrate the general
nature/character of the neighborhood, as well as to illustrate the typical conditions and specific problems/issues/impacts of
the proposed program and facilities. The photographs shall be either color or black and white, shall be presented in a four
inch (4”) by six inch (6”) format, and shall be suitably indexed, bound and annotated in accordance with the directions of
DDC. Photo log is not required if it is prepared under “Project Development/Identification” TASK 4.1-SECTION 4.
Prior to commencement of schematic geometric design, in order to illustrate the impact of the proposed geometrics on
surrounding properties, street elements, encroachments, etc., the Consultant shall visit the site and photograph project
streets in a manner approved by DDC. The Consultant shall prepare and submit to DDC a copy of the photo-log prior to
start of schematic design.
2. In preparing the Schematic Geometric Design alternatives the Consultant shall:
a) Study the traffic data that is available and/or collected under this Design program, including traffic counts,
accident data and level of service analyses for vehicles and pedestrians, and shall develop the design alternatives
to mitigate and or eliminate any adverse safety, operational or substandard conditions which can be identified
from the data analysis.
b) Coordinate the proposed schematic geometric design alternatives to meet the geometry and proposed
geometric configuration of intersecting streets.
c) Design preliminary grades and street drainage; including preliminary top of curb elevations, preliminary
roadway and sidewalk cross slopes, preliminary catch basin locations, and basin connections. Assess the impact
of proposed preliminary design grades on private property, street drainage, subway structures; and modify and
adjust the preliminary design grades to minimize adverse impacts identified.
d) Analyze the proposed schematic geometric designs and any other schematic geometric designs proposed by
the City for the project streets with respect to their impact on existing trees, existing property, landscaping,
access/egress of existing development, aesthetic treatments, acquisition needs, other City Agency's facilities and
private utility facilities. The Consultant shall give special attention to the impact of proposed grades on adjacent
property including, but not limited to, the drainage of such properties.
e) When a Consultant and/or DDC identify that the Project has a potential for use of the sustainable designs, as
described in Section 2.3 of these General Requirements, the Consultant shall incorporate sustainable designs
during development of the Schematic Geometric Design alternatives. The Consultant shall analyze the
environmental, social and economic benefits of each alternative. The Consultant shall include the results of its
studies, recommendations and the approved Sustainable Design alternative in the PDI report.
f) Prepare, graphically, an impact assessment plan (using a color-coded approved format) showing Right-of-
Way and Possession Lines, and items requiring removal for each alternative under consideration.
NYC Department of Design and Construction
Infrastructure, October 2012
GR-36