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01-09-07 Agenda Workshop CITY COMMISSION CITY OF DELRAY BEACH, FLORIDA WORKSHOP - TUESDAY,]ANUARY 9,2007 6:00 P.M. FIRST FLOOR CONFERENCE ROOM DELRAY BEACH ~ AII-AnwIcaClly 11111! 1993 2001 ~ The City will furnish appropriate auxiliary aids and services where necessary to afford an individual with a disability an equal opportunity to participate in and enjoy the benefits of a service, program, or activity conducted by the City. Contact Doug Smith at 243-7010,24 hours prior to the program or activity in order for the City to reasonably accommodate your request. Adaptive listening devices are available for meetings in the Commission Chambers. WORKSHOP AGENDA 1. Joint Meeting with the Public Art Advisory Board 2. Alternative Construction Delivery Methods 3. Presentation on improving Police & Firefighters' Retirement Investment Performance - Bogdahn Consulting, LLC 4. Presentation regarding the redevelopment of the Sundy House - John Szerdi 5. Commission Comments ............................................................................... Please be advised that if a person decides to appeal any decision made by the City Commission with respect to any matter considered at this meeting, such person will need to ensure that a verbatim record includes the testimony and evidence upon which the appeal is based. The City neither provides nor prepares such record. City Of Delray Beach Department of Environmental Services M E M 0 RAN ~^ ~ D u M . www.mydelraybeach.com TO: David T. Harden, City Manager FROM: Richard C. Hasko, P.E., Environmental Services Director SUBJECT: CONSTRUCTION DELIVERY METHODS DATE: January 5,2007 As with many municipalities, our process for implementing capital infrastructure construction has traditionally been the Design/BidlBuild (DBB) method. The project is designed either in house or by a consultant, construction documents are published for solicitation of competitive bids, and a contractor is awarded the construction contract generally on a low bid basis. While this process has generally worked well in the implementation of our capital program, we do, on occasion, experience problems with contractors selected on the predominant basis of price. These issues usually relate to adequacy of resources to perform the work, experience in performing the work or financial condition of the firm. In view of this, and at the direction of Commission, we have investigated alternative methods of construction delivery. Two other methods currently in use by governmental agencies are Design/Build (DB) and Construction Manager (CM) at Risk. Under the Design/Build method, a design criteria package is prepared and advertised to solicit contractors to bid the work. The design criteria package basically describes the characteristics and parameters of the project, and the categories by which the contractor will be selected which are not limited to or predominantly based on price. There are no plans, specifications or bid documents prepared. Bidder responses are then reviewed by a selection committee similar to the process by which we select professional consultants. The successful contractor will be selected on the basis of qualifications to perform the work and not exclusively "low bid". Subsequent to contract award, the contractor is responsible for preparation of construction documents and , of course, the actual project construction activities. The CM at Risk method is similar to Design/Build in that the Construction Manager is selected on the basis of qualifications and not price. The successful contractor takes an active role in the preparation of construction documents, either working closely with the professional consultant, or performing value engineering activities if the plans are completed at the time of contracting. In addition to a negotiated contract administration fee, the CM enters into an agreement with the City to construct the project for a Guaranteed Maximum Price (GMP). The City pays only the actual construction cost of the project up to but not exceeding the GMP. If costs exceed the GMP, the contractor absorbs the overage. W5.;6 A comparison ofthese three common project delivery methods indicates the following: · The traditional Design/BidIBuild method in most cases will probably result in the lowest project cost. This is, however, totally dependent on the quality of the contractor winning the bid. Some contractors will intentionally or through lack of experience, underbid projects. While their bid will appear to represent the best value, they will submit change orders and extras over the course of the project which will inflate the final project cost and, sometimes amount to more than other bids originally submitted for the work. There can also be other problems as previously described with contractors that cannot dedicate adequate resources to the project to complete it in a timely manner or are not financially viable. To a large extent, these issues can be minimized or avoided through the use of a prequalification process which staff is currently working to develop. · The Design/Build option offers the benefit of time savings in that the City does not have to include the eight to ten week advertising and bidding components of the traditional Design/BidlBuild process. Project cost is not the deciding parameter in selecting the contractor. Contractor selection is based on additional criteria and qualifications. Projects constructed using the Design/Build method can be cost effective relative to the value of the construction, however, the City sacrifices a good deal of control over the project. As long as the contractor conforms to the parameters detailed in the design criteria package and meets all building code requirements, he is free to specify such materials and construction methods as will benefit his profit margin. There remains the potential for change orders using this method as well if the City requires modifications during plan preparation and review that were not addressed in the design criteria package. Proj ect costs may be maintained or reduced at the sacrifice of quality. · The CM at Risk option provides the best opportunity for the City to ensure a quality project by a quality contractor. Contractor selection is made exclusively on the basis of qualifications so there is no opportunity for underbidding to get the work. In addition, the participation by the CM in the design phase of the project has the effect of incorporating constructibility considerations into the planning process. This can ultimately result in cost savings when the construction project commences. This process has the benefit of providing the City with a guaranteed maximum cost for the project. Since the CM will be conservative in his estimating, this method can appear a bit more expensive, however, remember that the City will only pay the actual construction cost. There can also be a time savings realized using this option since the contractor solicitation process can occur simultaneously with plan preparation. Finally, because of the requirement for the CM to provide a GMP, the potential for change orders is greatly reduced. In conclusion, it may not be practical to implement alternate delivery methods for many of our underground infrastructure projects because of the nature of the work and relatively small magnitude of the projects. There may, however, be an application for the Design/Build or the CM at Risk methods in the context of vertical improvements such as the Old School Square Garage or those of the City's parks projects requiring a variety of trades for construction of the improvements. Cc: Susan Ruby, City Attorney Brian Shutt, Asst. 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