Construction Update for September 19

Here’s a look at progress since last week and upcoming construction activities.

Subgrade Remediation

Excavation of the existing subgrade is complete, and City staff anticipate all new subgrade material will be placed by early next week.

On Monday, the project team proof-rolled the base aggregate layer to ensure it will be strong enough to pave. A super solo dump truck hauling 10 yards of pea gravel and weighing approximately 35 tons total drove back and forth across the base while AESI assessed the impact. Only one small area needed to be strengthened after the proof roll, which is good news for the remediation work. DA Hogan inspected the base subgrade on Tuesday and approved moving forward with finishing the subgrade remediation.

Now FieldTurf is placing the final layers of rock material, which DA Hogan will inspect early next week.

New Perforated Drain Pipe for South Edge

As part of the new scope of work, FieldTurf is replacing an old drain pipe installed on the south border of the facility. The new pipe will catch groundwater draining off the hillside and help the Parks Operations team maintain the courts.

Upcoming Work: Paving and Planarity Test

Once the top subgrade layer is inspected and approved by DA Hogan, the project will move onto paving. Northwest Asphalt, the subcontractor handling paving, will install asphalt in two lifts. Following paving, the project team will conduct a flood test to confirm the planarity, or relative smoothness, of the court surface to ensure the asphalt install is consistent.

The best method for confirming court planarity is to conduct a flood test, which involves flooding the courts with 1” to 2” of water, then observing how the water drains/evaporates. If water pools in any areas, those areas are uneven and may be adjusted before construction is complete. This is a critical quality control step to ensure that the courts are constructed correctly and to avoid major repair or reconstruction needs in the future.

This project remains on track, and the courts are still anticipated to open for play in October. View construction photos here.