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Look Ahead - Week of May 20 to May 26, 2018

Executive Summary

The project continues to track on-schedule and within budget. The three (3) key activities on site this week remain geothermal piping, building foundation, and utility construction.

Utility Construction

Underground electric (Pepco) work will continue along Grandview Avenue heading north towards Ennalls Avenue this upcoming week.

The underground electric work will include installation of conduits and electric circuits for Pepco’s power distribution. The underground electric distribution system, once installed, will replace the existing overhead Pepco electric lines. All overhead power and communication lines along Grandview Avenue and Reedie Drive will be placed underground as part of this project. The underground work is expected to be completed in mid-May.

This work is best characterized as disruptive in nature as it will require daily set-up of traffic controls, pavement cuts, excavation, backfill, and patching. Grandview Avenue will remain open to two-way traffic at all times. However, several parking meters will be bagged along the west curb lane (parking lane) of Grandview Avenue as this lane will be used as a through lane during the periods between 7am and 5pm.

Foundation Construction

Construction of the building foundation will continue this upcoming week. The northernmost area of the jobsite is receiving mud mat, waterproofing, and foundation slab (referred to as hydrostatic slab). All geothermal piping in the northernmost area of the footprint is complete and backfilled. This opens up the area for foundation construction.

Geothermal System

Plumbing of the geothermal wells in the southernmost area of the jobsite will continue this week. As with all geothermal wells, the wells in the southernmost part of the jobsite are being flushed, pressure tested, and circuited in 15-well circuits. This work is expected to continue over the next 2-3 weeks.

Site Dewatering

Foundation construction requires continuous site dewatering through 16-deep wells. This clean groundwater is discharged into the storm drain system as designed. All water discharged from the site is tested and treated for proper pH levels, if necessary, per the Maryland Department of Environment (MDE) requirements.

Follow Project Progress via the Project Camera

A camera has been installed to view construction on the site. Click here to access the camera.

Upcoming Activities:

  • Horizontal piping for Geothermal System
  • Geothermal flow testing
  • Geothermal 48-hour pressure testing
  • Backfilling of the geothermal system
  • Placement of stone as the foundation base
  • Placement of concrete mud mat
  • Waterproofing atop concrete mud mat
  • Placement of 18-inch thick bottom slab
  • Monitoring Inclinometer stations for embankment movement
  • Monitoring 3-D survey points on Support of Excavation system
  • Testing and monitoring of groundwater discharge water
Project photo
Utility work along Grandview Avenue
Project photo
Waterproofing placed in advance of footers and hydrostatic slab
Project photo
Final phase of geothermal work underway
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