Building Started at Gastonia

Laser-guided Screed

Power Ride-on Trowel

Slab after pour & plastic sheets installed

During the time since our last post, multiple concrete pours were made as shown in the photos above. The process includes using a laser-guided automated screed and large ride-on power trowels. In the last photo, you can see the slab is covered with plastic to ensure that moisture is retained allowing the concrete to cure slowly, yielding the highest strength.

 

 

Utility work shown here

Preparation of the base for the filter tanks

Removal of Over Burden - Over 65k cubic yards have been removed so far

Site work continued with underground utilities, removal of overburden/trash and installation of the underground detention system.

 

 

Filter Tanks for Storm Water Discharge

The filter tanks shown above weigh nearly 90k lbs. each and have 52 filter cartridges each; these tanks will filter sediment and other environmental pollutants before storm water is discharged off-site.

 

 

Arch feature of the site installed

Grouting between the arches

A major feature of the site is the arches shown above. Crews attached the end caps to the arches and lay grouting to the keyway between the two, which bonds the structure and concrete foundation together.

 

 

Arches shown near new Duhart’s Creek location

The proposed location of Duhart’s Creek will run adjacent to the wall footing.  The crews have finished the sheet piles that act as scour protection for the basket style wall footing.

It’s Been A While…

It’s been a while since the weather has cooperated. Last week, things changed and we found ourselves able to take full advantage of some good weather and continued the work in both building and civil areas.

The arch bridge crew has used the good weather to their advantage as well as the bridge arch construction was started and we expect to complete the arches next week.

Cut and Fill operations continue in the parking field. Storm drain installation in the parking area of the site is now 90% complete.

 

The Building Pad Turns Over & Pile Driving Begins

With the turnover of the building pad this week, our crews have narrowed down the requirements for turn-over. Stone access road was installed around the building pad and in staging area. Our building superintendent is now on the job to start vertical construction.

We have now shifted the focus from the pad completion to the remainder of the site. Sixteen trucks cycled at a rate of 1.5 rounds an hour as we concentrate efforts to removing about 30,000 CY of overburden that overlays the fill needed to complete the balance of the grading operation.

Our work continues on the spine road through the site and this week we started driving steel H piles and as soon as they are complete we will form and pour reinforced concrete caps to support the double arch culvert bridge crossing Duharts Creek.

Taking Advantage of Sunny Days

The New Year brought more un-needed weather to the site.  The week started off with wet conditions.   Taking advantage of sunny day windows the crews are using blending and dying techniques to keep the schedule moving forward.

Durharts Creek bypass was put into place to allow for the bridge foundation crews and pipe crews to work without water running through their work areas.  The creek bypass will stay in place until the arch span bridge is erected.

Storm crew finished out the triple run of 72” pipe. Headwalls will be poured next week.  The bridge foundation crew is hoping to have all the sheet pile piles in by the beginning of next week and start driving “H” piles  that the foots will set on.

The waterline crews have started on the loop feed around the building that will provide both domestic and fire line.

Overburden removal and revealing good fill material underneath is still a huge factor in progress. Crews have hauled nearly 40,000cy offsite at this point.   The site contractor has been running to operations  to remove as much overburden as possible at the same time excavating good fill material to bring the pad and parking lot up to grade.

Fill Operations Continue

We were impacted somewhat by the weather events last week but overall had a decent week.  Our fill operation for the pad continued in coordination with overburden removal, which revealed additional good fill material.

The bulk amount of the fill needed for the building pad should be in place mid next week and we will then continue to the parking fields.

We also finished all the 60” CMP portion of the underground detention system. The filtration system is in fabrication and will be on site in January.

The double steel arch bridge, a part of the future Gaston Mall Drive, started this week with the mobilization of the foundation crew.  We have started driving sheet piles around the footing locations of the bridge before the “H” pile installation which will support the concrete footings of the bridge.

Taking Advantage of the Weather

On the job last week we faced low temperatures mixed with some freezing rain, sleet and snow but were able to take advantage of a few good days of weather in between the rain and sleet.

We have now completed the building pad undercut and are continuing the grading operations in this area  by using  earth material from two areas of the job site and then blended it to speed up the fill process.

Anticipating a problem with the weather conditions at the first of the week, we doubled the size of the storm sewer crew and were able to get about 1,000 lf of the 60” CMP completed by Saturday.

Building Pad and Underground work nearing completion

We made good progress this week and at week’s end we had achieved about 95% of the building pad undercut. We also completed the geo-grid and select back fill material installation along two sides of the pad, a design element to protect the building pad’s integrity along the Duhart’s Creek of the building.

Once the fabric and select back fill material was completed our fill operation then concentrated to bring this last remaining area up to grade. (About 15’ vertical)

Overall, a good week, although inclement weather continues to become a larger a factor as it is typically  during this time of the year.

On Monday, The underground detention system was started.  This system will have over 1,240 LF of 60” CMP and will be located underneath the parking lot area.  One of the design functions of this system includes a unique filter system to trap sediment and petroleum before rain runoff leaves the system.

Work Continues For Gastonia

The site grading contractor has been taking advantage of the great weather in late October to get a jump on the undercut for the future building pad. Multiple layers of grid and stone are being used to insure a stable building foundation.

Granular Material and Fabric Covering

Through the month of October, the site contractor has progressed with the installation of the triple 72”CMP (Corrugated Metal Pipe). This is being installed to relocate an existing storm stream under the future parking lot area.

Forming of 72" Pipe Collar

The relocation of the existing outfall sewer was a 24/7 operation after finding the condition of the existing VCP pipe. Crews worked round the clock for 7 days to install, test and cut over more than 1200lf of new 18” sewer line.

Sewer Crew Setting Up For Relocation Process

Night Work for Sewer Relocation

The site contractor was able to get the transition collar from CMP to RCP in on the triple 72” pipes before the Thanksgiving Holiday.