Title
An Ordinance awarding the bid for Project No. 324-20/21 (Curb) to Phoenix Concrete & Underground LLC in the amount of $2,130,805.26, and authorizing the City Manager to execute an agreement of the same.
(Note: First reading by Council on July 7, 2020. Passed by unanimous vote.)
Body
Issue/Request:
An Ordinance awarding the bid for Project No. 324-20/21 (Curb) to Phoenix Concrete & Underground LLC in the amount of $2,130,805.26, and authorizing the City Manager to execute an agreement of the same.
Key Issues:
· The annual Curb Program replaces damaged and deteriorated curb on some of the streets scheduled for overlay in the following fiscal year.
· The annual Curb Program updates sidewalk approaches to current specifications required by Federal Americans with Disability Act (A.D.A.).
· Phoenix Concrete & Underground LLC was found to be the lowest and best responsible bidder.
Proposed Council Motion:
I move for adoption of an Ordinance awarding the bid for Project No. 324-20/21 (Curb) to Phoenix Concrete & Underground LLC in the amount of $2,130,805.26, and authorizing the City Manager to execute an agreement of the same.
Background:
Much of the curb and gutter placed in the KC Metro between 1985 and 2008 was installed using local limestone aggregate that was of poor quality because it was relatively soft compared to previous sources of limestone rock. The aggregate still met local specifications, and worked well for buildings, foundations and most structures. However, when used for paving, curb and sidewalks, the aggregate was prone to fail within 10 years.
The frequent and harsh freeze-thaw cycling, combined with wet conditions, accelerated the concrete failure process “D-cracking” that disintegrates concrete from the inside out. The soft limestone absorbs water. As the water freezes, it expands and cracks the aggregate and concrete from the inside out. This process took several years to surface, and then time for the concrete industr...
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