UToledo 2008 Campus Improvements

DGL was hired to provide design services for three bid packages for The University of Toledo, including roadway milling and resurfacing, parking lot resurfacing and landscape improvements, and loading dock drive and retaining wall repairs along with a new 40-spot parking lot. DGL prepared construction cost estimates for the proposed improvements, and defined the scopes of each project to best use the available funds. The projects were bid separately with aggressive schedules for completion during summer break. DGL was responsible for design, bid, and construction administration.

As part of bid package 3, the HEB Loading Dock project involved removing the existing sidewalk, retaining wall, curb, and approximately 3 inches of concrete overlay on the driveway. The concrete overlay was removed using a milling machine, with care taken to avoid damaging the underlying reinforced concrete slab. After removal of the overlay, the cleaned underlying slab was sounded and all unsound material was removed by use of hand chipping. ODOT’s Supplemental Spec 848 was referenced for cleaning and preparing repair areas. DGL’s design involved using temporary bracing on retaining wall during installation of low strength mortar backfill, installing dowels with 9-inch curb and retaining wall, low strength mortar backfill in 18-inch lifts (allowing mortar to cure between lifts), 6-inch deep sidewalk and 3 inches of Type S Concrete with synthetic macro fiber reinforcement as a bonded overlay.