June in Knoxville has had the most rainfall on record, but when the rain stops the precast crews are eager to push forward.
TDOT rules for holiday traffic have also impacted movement of permitted “heavy loads.” This required early staging of precast to have materials onsite to complete the day before the 4th of July and to have stock available for an early start on Monday.
On the north end of the project, backfill for retaining wall # 1 progressed with the use of dense graded aggregate, as most soils in the area were too wet to use for structural fill. Concrete crews progressed with the first of two pours for retaining wall # 3. Crews also prepared for our first slab on grade for the parking deck. This small pour is required due to limited access for form removal after precast is erected.
Caisson crews were busy at the southern end of the project, but were delayed by rain and pentacle rock, which was not stable enough to support our foundations. Deeper than usual drilled piers were required.