Our Projects

Ellis Island Seawall Stabilization and Rehabilitation

Ellis Island Dive Inspection.jpg
Project Overview: 
The historic ferry building and connecting corridors were severely undermined by the seawall’s poor condition. The preliminary inspection of the seawall revealed varying degrees of deterioration. Mortar joints had eroded; large granite blocks were dislodged and fallen into the harbor. Furthermore, wooden relieving platforms and wooden piles had decayed and were voraciously attacked by marine bores, resulting in accelerated deterioration of the seawall itself and causing serious erosion from beneath and behind. Sinkholes had developed behind the seawall on all sides of the ferry slip.
McLaren's Role: 
McLaren provided underwater inspection of the seawall, as well as providing an inspection of the seawall’s face.Following the inspection, McLaren was tasked to prepare Class C, Class B and Class A Construction Cost Estimates. Our effort also included preparation of construction cost estimates for schematic and preferred alternatives as well as the final design. McLaren was also responsible for providing construction inspection services relative to the marine components of the seawall repair.
Service: 
Underwater Inspection
Service: 
Cost Estimates
Service: 
Construction Inspection
Location: 
Upper New York Bay, Jersey City, New Jersey
Client: 
National Park Service
Project Type: 
Marine Inspection
Role: 
Subconsultant
Contract Period: 
2009-2012
Construction Cost: 
N/A

Tarrytown Castle Expansion

Tarrytown Castle.JPG
Project Overview: 
McLaren provided various engineering services for the planned expansion at The Castle Hotel & Spa. The new buildings include a new spa building of approximately 8,000 square-feet, a new hotel entrance, and reconstruction of the entry courtyard. The Castle also received small building additions at the rear of the building and the entrance to the banquet hall, a new entry gate, as well as modification to the current parking along entrance road and overflow parking.
McLaren's Role: 
McLaren provided topographic and property surveys for this 10 acre property. We prepared site plan approval documents, which included existing conditions of the site, proposed plans for grading and utilities, sediment and erosion control plans, stormwater management drawing, sanitary sewer pumping station plans and report, as well as construction details. The site plan documents also included a full Environmental Assessment Form, as well as a Stormwater Pollution Prevention Plan. McLaren also developed a boring plan and specifications for exploratory work which was used by the drilling contractor on the site. We then supervised the borings in the field investigation, prepared field reports, and coordinated obtaining the boring logs and all laboratory testing results. McLaren was also retained to design and develop a new single-story spa building and accompanying courtyard. The additions also include a two-story castle elevator addition, as well new entryways to both the main and banquet entrances. These entrances include an architecturally exposed structural steel cantilevered canopy.
Service: 
Surveying Services
Service: 
Site/Civil Engineering
Service: 
Geotechnical Engineering
Service: 
Structural Engineering
Location: 
Tarrytown, New York
Client: 
KTGY Group, Inc.
Project Type: 
Reconstruction
Role: 
Prime
Contract Period: 
2011-2013
Construction Cost: 
$4,200,000

Walkway over the Hudson - Elevator Design

Walkway Over the Hudson Elevator.JPG
Project Overview: 
McLaren was retained to design a steel, braced-frame elevator tower; supported at the bottom by a caisson foundation and at the top by the existing railroad bridge that was repurposed for use as a recreational walkway. The elevator tower was constructed to make the Walkway over the Hudson (which stands over 200 feet above the river) accessible from the Hudson River shoreline. Before the addition of the elevator tower, visitors were required to access the walkway from east or west entrances and walk approximately one mile round trip to enjoy the views of the Hudson River. The elevator tower is 21 stories and utilizes weathering steel to match the existing bridge’s steel and to save future maintenance costs of painting. The elevator tower currently provides support for one (1) commercial grade rack and pinion exterior elevator, featuring large windows for views of the Hudson River while riding the elevator. The tower was designed for a second future elevator to be located on the opposite side of the tower, and for a future flight of steel framed stairs at the interior of the tower. The upper level is a concrete slab on metal decking with a removable center area of slab to accommodate the future stairs.
McLaren's Role: 
McLaren provided cost estimation services for the preliminary design and designed the steel elevator tower, concrete elevator pit and caisson foundations, the future flight of steel framed stairs and steel railings, and the upper level concrete slab and steel railings.
Service: 
Elevator Design Alternatives
Service: 
Steel Angles
Location: 
Poughkeepsie, New York
Client: 
Walkway Over the Hudson / Bergmann Associates
Project Type: 
Elevator Design
Role: 
Subconsultant
Contract Period: 
2009-2014
Construction Cost: 
$2,400,000 (Est)

Inmar's New Headquarters

New Headquarters for Inmar.jpg
Project Overview: 
Inmar’s New Headquarters is a LEED Platinum Certified 232,000 square foot adaptive reuse of two historic manufacturing buildings once owned by RJ Reyolds Tobacco Company east of downtown Winston-Salem, North Carolina. The project included retro-fitting the open warehouse space with two infill floor plates, modifying the existing structure to accommodate new atriums and skylights, repurposing a mechanical dunnage structure into a featured multi-level glazed conference tower, and designing the attachment for an architecturally significant wall façade on the north end which featured a glass curtain wall surrounding suspended masonry veneer.
McLaren's Role: 
Structural engineering services included field investigation and analysis of the existing channelcrete roof plank and truss system. McLaren assessed their condition and created remedial repair drawings, as well as the design of signature architectural features and exposed structural elements throughout the building. McLaren was called upon to devise an innovative solution, using traditional construction materials to the floor-to-floor height dilemma, presented by the preservation of the historic second floor warehouse slab. Geotechnical engineering services included in-situ subsurface investigation within the shell of the existing warehouse structure; which eliminated the need for mitigation of the existing foundations while adding gravity loads from two new floors at each column.
Service: 
Structural Engineering & Design
Service: 
Feasibility Study
Service: 
Adaptive Reuse
Service: 
Design Development
Service: 
Construction Documents
Service: 
Geotechnical Engineering
Location: 
Wake Forest Innovation Quarter, Winston-Salem, North Carolina
Client: 
Design Collective, Inc.
Project Type: 
Structural Engineering
Role: 
Subconsultant
Contract Period: 
2012-2013
Construction Cost: 
$32,000,000

National Aquarium In Baltimore Blacktip Reef Exhibit

National Aquarium In Baltimore NAIB - Wings on the Water Renovation - Black Tip Reef.JPG
Project Overview: 
McLaren performed structural investigation, design, and construction phase services as part of the A/E team for the complete restoration and renovation of a 260,000 gallon salt water tank. The crown jewel of the National Aquarium’s Pier 3 Building, the “Blacktip Reef Exhibit” includes a large curved acrylic viewing panel, cantilevered viewing gallery with glass handrails, and was constructed without disturbing everyday operations of the aquarium.
McLaren's Role: 
Challenged with performing the investigation and design of the renovated space while the exhibit area was full of water, McLaren utilized in house dive teams to gather information and extract core samples of the existing concrete. Using 3-D finite element structural modeling and historical investigations and analysis, McLaren prepared bid and construction documents for the renovations that were required to transform the exhibit into the new “Blacktip Reef Exhibit”. Significant renovations included the removal of an existing column and slab system to permit the construction of a new cantilevered viewing gallery and removal of large parts of the original tank to accommodate the 27’ x 8’ tall x 3" thick curved acrylic viewing panel. Due to the open nature of the Pier 3 Building, McLaren worked closely with a scaffolding company to enable a temporary “lid” to be installed over the exhibit to minimize noise, dust, and visibility to the rest of the building during the construction phase.
Service: 
Structural Engineering
Service: 
Underwater Investigation
Service: 
Construction Documents
Service: 
Construction Administration Phase Services
Location: 
Baltimore, Maryland
Client: 
National Aquarium in Baltimore
Project Type: 
Structural Engineering
Role: 
Subconsultant
Contract Period: 
2010-2013
Construction Cost: 
$14,000,000