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TO: Mayor Richard C. Irvin
FROM: Kurt Muth, P.E., Engineering Coordinator
DATE: August 28, 2018
SUBJECT:
Resolution authorizing the Director of Purchasing to execute the Contract Change Order Request Number 1 with Performance Construction & Engineering, LLC, 217 W. John Street, Plano, IL 60545 for the 77 S. Broadway Ave. Parking Structure & 65 Water St. Demolition Project.
PURPOSE:
To increase the Contract by $30,000.00 from the original value of $578,000.00 to a new Contract value of $608,000.00.
BACKGROUND:
This change order is necessary to increase the contract value to address two unforeseen work items encountered during construction, as discussed herein.
Per the bid documents, the existing brick walls on the north and south side of the parking structure were to remain in place with new brick installed in the locations where the parking deck was attached. After removal of the parking deck, it was determined that the outer layer of brick on each wall was not structurally sound and complete removal would be required. The remaining underlying walls were a mixture of limestone, various types of brick and sections of poured concrete with varied finishes. Not only were the walls in poor condition aesthetically, but also structurally, as extensive repairs to the mortar joints would be required. After analyzing various options to address the walls, the application of a spray on concrete product known as shotcrete was selected. Shotcrete was the most cost effective option to address the deteriorated joints, and the product also addressed the aesthetic issue by providing a uniform finish to the varying materials of the existing walls. The cost of the shotcrete was approximately $78,000 which was offset by other contract savings of approximately $81,000. Included in that savings was the cost for the originally planned brick wall repair and approximately $10,000 of new sidewalk that will now be installed at a later date when the site is completely ba...
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