Project Type Archives

TechWorld

TechWorld

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Overview

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Location: Washington DC

Project Size: $7,194,157.60

Owner: TechWorld Owner’s Association

Engineer: Construction Insight DC LLC

Project Duration: 2 years

The TechWorld campus is located in downtown Washington DC right next to Chinatown and two blocks from the Capital One Arena. 4 different addresses span the city block that sits overtop of the 500,000 square foot garage. Repairs at this jobsite required coordination with the Renaissance Hotel, the DEA, several restaurants, a labor union, a post office, and a building undergoing a complete top to bottom renovation. Two years were spent working inside these spaces as well as the loading dock and large parking garage below. Water leaking from a large paver plaza above and heavy traffic inside the garage contributed to the deteriorating condition of the concrete surfaces on the property. In addition to water entering from above, water was also making its way into the garage from below the mat slab and through the foundation walls. Thousands of feet of horizontal and vertical grout injection were carefully performed and monitored over several months to ensure sub-terranean water was being directed elsewhere. While the source of the water infiltration was being addressed, hydro demolition was performed on the concrete surfaces to repair the large scale of delaminations. Once structural repairs were complete, expansion joints and waterproofing were installed to ensure the new slabs were protected from future movement and moisture.

Notable project work scope items included:

 ·         75,750 square feet of partial depth hydro demolition and install of new concrete slab

·         10,000 square feet of mat slab repair

·         500,000 square feet of corrosion inhibitor treatment and urethane traffic membrane install

·         Over 5,000 linear feet of grout injection at wall and deck cracks

·         Over 20,000 linear feet of new rebar

·         5,365 linear feet of expansion joint removal and replacement

·         600,000 sf of new paint on soffit, walls, and columns

·         New Elevator Lobby slip joints

·         390 linear feet of heavy-duty expansion joint and steel cover plate replacement at the properties loading dock

·         New trench drains and concrete islands at garage entrances

3 Bethesda Metro Center

3 Bethesda Metro Center

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Overview

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Location: Washington, D.C. 

Project Size: $7,053,075 

Owner: Brookfield Properties

Engineer: Smislova, Kehnemui & Associates (SK&A)

Project Duration: 2.5 years

3 Bethesda Metro Center is a 368,000 square foot office building located in the heart of Bethesda, Maryland. The 16-story building has balconies on the upper floors, a large brick plaza, and many great amenities including a fitness center and lounge. Located on the 7th Street retail corridor, 3 Bethesda Metro Center is within walking distance of restaurants, retail stores, museums, and more. Perhaps most notable is its proximity to the Bethesda metro station on the Red Line, which services over 9,000 passengers daily.


This project addressed repairs in the building’s expansive garage, Metro bus terminal, various stairwells, air shafts, and ramps. The garage exhibited visual spalling to the extent that prompted wall-to wall hydro on the entire 1st two levels of the garage. Once complete, all concrete surface in the garage were coated with a vehicular, urethane coating membrane. Concrete and waterproofing repairs on the Metro Bus loop were coordinated with WMATA to ensure the regularly scheduled bus routes were unaffected as work progressed over a 6-month period. All loading docks and ramps had complete removal and replacement of their concrete topping slabs and hot applied waterproofing.

This two and half year long project consisted of 164 different work items including the following notable repairs:

  • 121,000 square feet of wall-to-wall partial depth hydro demolition and install of new concrete slab
  • 39,000 square feet of full depth hydro demo
  • 22,000 square feet of hydro demo patch repair
  • 9,000 square feet of waffle slab repair
  • 356,000 square feet of urethane traffic coating system
  • 178,000 square feet of corrosion inhibitor application
  • 60 new drain install locations and 2,400 linear feet of new piping
  • 1,000 linear feet of new pipe rail fencing
  • 2,500 linear feet of expansion joint removal and re-installation
  • 12,000 square feet hot applied waterproofing
  • Over 500,000 square feet of new soffit, wall, and column paint with color banding

Poff Federal Building

Poff Federal Building

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Overview

Poff Federal Building Garage Rehabilitation

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Location: Roanoke, VA 

Owner: U.S. General Services Administration

General Contractor: Hoar Construction

Engineer: McMullan & Associates, Inc.

Project Duration: 14 months

Project Value: $2,114,682

The Poff Federal Building in Roanoke, Virginia, a 14-story high-rise, serves as a key government facility housing 400 to 500 federal employees, including offices for the General Services Administration (GSA) and the Circuit Court. Over 40 years of weathering had significantly deteriorated the adjacent parking garage, raising concerns about its structural integrity and long-term durability.

 

To address these issues, Concrete Protection & Restoration, Inc. (CPR) executed a comprehensive structural restoration, ensuring long-term stability, improved safety, and enhanced durability for the facility.

 

Scope of Work

 

The project required extensive structural rehabilitation, focusing on deteriorated concrete repair and reinforcement. Major restoration elements included:

Hydro-Demolition

  • Performed by Prepcon
  • Removed 32,000 square feet of deteriorated concrete via hydro-demolition.

Concrete Overlay

  • Installed a new concrete overlay to strengthen the structure and improve durability

Full-Depth Concrete Repairs

  • Performed 5,000 square feet of full-depth repairs to restore heavily damaged sections.

Structural Beam & Column Replacement

  • Replaced compromised beams and columns to reinforce the structural framework.

Vertical & Overhead Corrosion Protection

  • Applied a corrosion inhibitor treatment to prevent further steel reinforcement degradation.

New Stair Installation

  • Constructed new concrete stairs to enhance safety and accessibility.

Expansion Joint Replacement & Crack Repair

  • Replaced failed expansion joints to improve structural movement and prevent water intrusion.
  • Utilized chemical grout injection for crack repairs, ensuring long-term durability.

Traffic-Bearing Membrane Installation

  • Applied a protective membrane on the top deck to safeguard against moisture infiltration and extend surface life.

 

Project Impact & Results

 

The restoration of the Poff Federal Building parking structure significantly improved the structural integrity, longevity, and safety of the facility. By integrating advanced hydro-demolition techniques, high-performance concrete overlays, and protective treatments, CPR successfully extended the service life of the garage while minimizing future maintenance costs.

 

This project reinforces CPR’s commitment to preserving critical infrastructure, delivering solutions that enhance durability and protect structural investments for decades to come.

 

*Concrete Protection & Restoration, Inc. provides expert concrete restoration services throughout Florida, Maryland, Virginia, Pennsylvania, Washington D.C., and beyond.

Tyson’s Corner Marriott

Tyson’s Corner Marriott

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Overview

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Location: Vienna, VA  

Owner: MTC Hotel TRS LLC

Engineer: Construction Insights Inc.

Project Duration: 

The Tyson’s Corner Marriott property consists of a 15-story high hotel situated on five acres off Leesburg Pike in Virginia. Built in 1979, this hotel has 396 rooms, almost 10,000 square feet of meeting & event space, and a recreational pool. There a two-level parking garage which offers on-site parking. The first level of the garage is open air with a portion directly under the hotel’s meeting space. A ramp takes you down to the enclosed, on grade second level. The base contract consisted of the following repair items:

  • 5000 SF of Partial and Full Depth Hydro Demolition Patch Repairs
  • Full Depth Laundry Room Repairs
  • Overhead, Vertical, SOG concrete repairs
  • Expansion Joint Installation
  • 20,000 SF of coating removal and full system install
  • 30,000 SF of Re-coat

 

As the project progressed additional repairs were added to the scope due to the deteriorating conditions around the property:

  • Full Depth Kitchen Closet Repairs and new Epoxy Flooring
  • 2,000 SF of topping slab removal and replacement at hotel sidewalk
  • 2,000 SF of hot apply installation at sidewalk with WP turndown at foundation wall
  • Partial and Full depth repairs at Loading Dock
  • New Traffic Membrane at Loading Dock
  • Remove existing parging in Vent Shaft and apply new elastomeric coating on CMU walls