7-26 - RFP RFI Consultant Response.pdf

Luddington Road Sidewalk Panel Replacement Project Understanding From our review of the RFP and a site visit, it is understood that the project scope includes the engineering design for the replacement of the drainage culvert top slab panels acting as a sidewalk along the north side of Luddington Road, which will include the following: 1. Survey of the project site and preparation of base mapping. 2. Structural design of the replacement culvert top slab. 3. Preparation of contract drawings and specifications. 4. Preparation of detour plans. 5. Up to four (4) meetings with the Township. 6. Preparation of a Bid Package in accordance with public bidding laws. 7. Providing Construction Administration services, including review of submittals and shop drawings, and part-time construction inspection. The existing drainage culvert and sidewalk panels were originally constructed in the 1930s as part of the Luddington Road Outlet Tunnel, which provides a sewer connection between the First and Second Mountains within West Orange Township. From a review of the construction plans provided by the Township, the drainage culvert within the project area is a ramp portal that provides access to the eastern entrance of the Luddington Road tunnel. As such, the existing concrete sidewalk slabs were constructed as movable slabs that could be removed to access the ramp into the tunnel. Coordination with the Township will be required to determine the need to maintain access to the tunnel ramp. The ramp portal consists of a cast-in-place concrete culvert varying in height from 6” to 8’-11 ½” with a clear span of 6’-0”. The sidewalls have a minimum width of 1’-0” with steel angle top slab seats supporting a 5” thick concrete top slab. The original top slab detail provided on the As-Built plans included two (2) lifting rings on each slab. However, based on our site visit, it appears the original sidewalk slabs have been replaced since the original construction, as no rings or evidence of grouting are currently present. It is anticipated that an in- depth evaluation of the condition of the culvert sidewalls, top slab seats, and bottom slab is not included in the scope of this project; however, standard substructure repair details can be provided as an if and where quantity on the construction drawings. Per the RFP, GPI will coordinate and attend

cluded in the scope of this project; however, standard substructure repair details can be provided as an if and where quantity on the construction drawings. Per the RFP, GPI will coordinate and attend an on-site Preliminary Design meeting with Township representatives following completion of the survey base mapping to discuss the project scope. This meeting will be followed by the preparation of the preliminary slab design and construction drawings. Construction drawings will include demolition plans, framing plans, concrete slab details, and, if and where directed, substructure repair details. During the Preliminary Design phase, GPI will also coordinate and attend a meeting with the Township’s WOPD Traffic Bureau to discuss traffic control and detour plans. A Preliminary Design package will be submitted to the Township, which will include construction drawings, detour plans, specifications, and a preliminary cost estimate for review. Following the Township review, a Final Design Meeting will be held to discuss the Township’s comments and final edits to be incorporated into the final contract documents. GPI will prepare the final contract documents, including final plans, specifications, and the engineer’s estimate for submission to the Township for approval. Upon approval of the Final Contract Documents, GPI will prepare the Bid Package, including construction plans and technical specifications suitable for public bidding. Deliverables for this project consist of twenty (20) copies each of the Bid Package (construction plans, engineer’s estimate and specifications). GPI will also provide digital copies (AutoCadd and Adobe formats) of the contract documents. Following bidding, GPI will also provide Construction Administration Services to assist the Township throughout the construction phase. GPI will review bid results and prepare a bid recommendation summary for Township review, coordinate and attend a pre-construction meeting, and review submittals and shop drawings for conformance with the Contract Documents. During construction, we will provide part-time construction inspection services at major project milestones, including the installation of detour signage, demolition of the culvert top slab, and installation of replacement panels.

ge, demolition of the culvert top slab, and installation of replacement panels. Page | 1