Harbor View
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Structural Repair/Strengthening

Harbor View

Harbor View

Harbor View Condominium
Baltimore, MD

Building Usage: High Rise Condominium Building

Number of Stories: 20 plus stories

Type of Work: Complete replacement of severely deteriorated exterior steel stair cooling tower support framing. SRG performed an analysis and design of the new support framing as well as modifications to two (2) other mechanical support platforms as part of a mechanical renovation.

SRG’s Role: SRG was retained to perform a field survey of the as-built construction, review the original construction documents and devise a remedial plan to repair or replace the existing support framing. SRG then developed repair design documents for use in soliciting competitive bids. This project was also complicated by the height of the structure and how it is surrounded on three (3) sides by the Baltimore Harbor. This required that the design include provisions for the old framing to be removed and the new platform framing be erected by way of a helicopter.

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Four Winds
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Structural Repair/Strengthening

Four Winds

Four Winds

Four Winds Condominium
Arlington, VA

Building Usage: Eight (8) Occupied Condominium Buildings

Number of Stories: Three (3) to four (4) stories

Construction Contract Value: $3 Million

Type of Work: Complete replacement of severely deteriorated exterior steel stair structures and replacement of balcony structural steel corner columns.

SRG’s Role: SRG was retained to investigate the extensive deterioration to the existing steel stair steel structures and balcony steel corner columns. It was determined that the level of deterioration SRG encountered could not be repaired in a cost effective manner and therefore required replacement of the entire stair assembly at twelve stair tower locations. SRG developed a remedial design package for the replacement of these critical structures and the package was competitively bid. SRG assisted the Owner in the contract negotiation phase as well as performed the construction observation and contract administration services during the construction phase of work. SRG also served as the Structural Engineer of Record on this project.

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Fort Ellsworth
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Structural Repair/Strengthening

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Fort Ellsworth

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Fort Ellsworth Condominium

Foundation Underpinning and Building Envelope Evaluation and Repair

Fort Ellsworth Condominium:
Alexandria, Va.

Building Usage: Five (5) Stand-alone Occupied Residential Condominium Buildings

Number of Stories: 4 stories

Construction Contract Value: $1 Million (approximate)

Type of Work: The structural work included the installation of helical piers to underpin the existing foundations, installation of mechanical connections to develop a diaphragm at each floor line and the engagement of the floor system to the walls. The exterior and interior masonry bearing walls required reconstruction or repair at numerous locations throughout the building. Subsurface and grade level drainage amendments were also developed to help manage surface water at the building’s perimeter. Concrete caisson’s were augured into the embankment behind the building to stabilize the slope upon which the building was founded.

SRG’s Role: During the course of our engagement with this property which has spanned over 14 years, SRG has been involved on several projects at the property. The most significant involved the investigation and remedial design of a foundation stabilization program to prevent collapse of a four story structure. SRG was initially retained to investigate unstable masonry walls (displaced/bulged) visible in the rear of the building. The buildings utilize masonry bearing walls with pre-cast pre-stressed hollow core floor planks and metal and wood roof trusses. The services of a Geotechnical consultant were also required to perform a subsurface assessment while SRG performed a detailed investigation of the above ground portions of the structure. The findings from these two investigations revealed that the building was unstable and the foundations were experiencing both a slope failure as well as a marine clay related shrink-swell issue. These combined issues required that the residents of the subject building be relocated to other housing while the structural repairs were undertaken.  SRG provided bidding services and served as the Engineer of Record and Special Inspector as required by the City during the various construction phases.

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Parkfairfax
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Structural Repair/Strengthening

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Parkfairfax

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Parkfairfax

Parkfairfax Condominium HOA
Alexandria, VA

Building Usage: Occupied Condominium Buildings

Number of Stories: Three (3) stories

Number of Units: Varies per Building

Construction Contract Value: $150,000 to $350,000 (varies)

Type of Work: Structural stabilization including helical pier underpinning and subsurface drainage modifications. This work also involved foundation and masonry wall repairs and foundation waterproofing as well as crawl space ventilation and vapor barrier enhancements.  Subsurface drainage was also addressed as part of the remedial work.

SRG’s Role: SRG was retained initially to investigate the structural settlement and differential movement occurring at one (1) building where significant masonry wall distress was visible. A geotechnical consultant was retained to evaluate the subsurface conditions and provide recommendations for stabilization and water management. SRG developed a remedial design package for the subject building and the package was competitively bid. SRG assisted the Owner in the contract negotiation phase as well as performed the construction observation and contract administration services during the construction phase of work. SRG also served as the Structural Engineer of Record on this project.

Three (3) other buildings experienced differential foundation settlement over a period of several years that required stabilization as well. These buildings also required underpinning using helical piers and subsurface drainage systems. Masonry repairs to address various masonry issues were also included in each of these projects.

The project also included a property wide survey to identify and prioritize the buildings into three (3) categories as follows:

  1. What buildings require or may in the future required foundation stabilization;
  2. Which buildings require masonry façade maintenance/repair and should be surveyed periodically; and
  3. Which buildings are low priority and seem to not be impacted by shrink/swell sensitive clay soils.

This survey was used as the basis for future planning and budgeting in anticipation of the need for future foundation stabilization, masonry repair and periodic maintenance work.

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Worldgate Condominium
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Structural Repair/Strengthening

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Worldgate Condominium

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Worldgate Condominium


Worldgate Condominium
Herndon, VA

Building Usage: Occupied Condominium

Number of Stories: Four story wood framed buildings

Number of Units: 3 of 10 buildings comprising 508 units

Construction Contract Value: $1.7 million (approximate)

Type of Work: Roofing repairs, structural wood framing repairs, gypcrete sub-floor repairs, sheathing replacement and repairs, replacement of windows and doors at wood decks, installation of window, door, and deck flashings, replacement of multi-story wood decks, deck-to-wall flashing installation, weather resistive barrier replacement, chimney flashing and framing repairs and cladding/chimney cap replacement, replacement of siding with new cement board siding and synthetic PVC trim and minor site drainage modifications.

SRG’s Role: SRG was retained to investigate various leak conditions throughout three (3) of four (4) “Crescent” buildings that comprise a portion of the ten (10) building community.  During the investigation phase, significant structural deterioration was discovered by SRG and we subsequently provided services relative to emergency shoring that were required in one (1) of the three (3) subject buildings.  SRG developed a design package to address a lack of flashings and improperly installed flashings, deck framing deficiencies resulting in deck replacement, sheathing replacement, repair of structural members damaged and deteriorated as a result of water infiltration, roof repairs, window and door replacement, weather resistive barrier installation, as well as siding and trim replacement.  Services also included bidding, construction observation and contract administration.  The project was broken into two (2) phases with the first phase consisting of the one (1) building with significant structural damage which required that the repairs be expedited so that the temporary shoring installed in occupied units could be removed. This project required a high level of collaboration and coordination with the Owner, building occupants, SRG, and the Contractors given that the repair work required the occupants of each unit in the work zone to be temporarily relocated for several weeks.

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