MPP Engineers, LLC

Commercial and Office

Metrotop II is a new 10 story office building in Woodbridge, NJ.  The total square footage of the building is approximately 320,000 ft^2 with a total height of approximately 155'-0" above grade.  The facade consists of precast panels with granite infill and a ribbon window system.   The building also consists of a new four story connecting link to an existing building and is enclosed with a glass curtainwall.  The top of the building consists of a mechanical penthouse and an event space.  

The building was designed on a 30 x 45 grid for the exterior bays with the center bay 30 x 30.   The floor framing consists of a composite slab on metal deck supported on steel framing.  The lateral load resisting system consists of steel bracing in both directions.  The foundations consist of a mat below the center bracing core and isolated spread footings around the perimeter.  

 

 

 

Metrotop II

Woodbridge, NJ

This new four story, 200,000 ft^2 office building is located in Bridgewater, NJ.  The design consists of a typical 30 x 30 grid with a lightweight concrete slab on metal deck supported on steel framing system.  The building also consists of a four story connecting link to the existing building.  The exterior wall consists of a curtainwall supported for gravity loads at the foundation level and laterally supported at each floor.  The site grading is such that the first floor on one side of the building is below grade.  In order to balance the unbalanced lateral earth pressure loads, the building was designed with a retaining wall on one side.   The lateral load resisting system consists of steel bracing and the foundations consist of isolated spread footings. 

 

 

 

55 Corp

Bridgewater, NJ

 A new two story medical office building located in Madison, NJ.  The exterior facade consists of a brick veneer with light gage stud back-up.  The second floor framing consists of a concrete slab on metal deck system supported on steel framing. 

 

345 Madison

Madison, NJ

Based on the height of the building, the lateral load resisting system was subjected to high net uplift forces.  The uplift was resisted by using rock anchors with a capacity of 135 kips and a bond length equal to 27 feet.  

 

One of the challenging aspects of the project was the corner columns were outboard of the edge of slab.  One axis of the column is unbraced for the full height of the building and was analyzed based on bracing provided by the weak axis bending of the beam in the perpendicular direction. 

The roof profile consists of a gable with a central flat portion and enclosure for rooftop mechanical equipment.  The framing for the flat portion consists of a metal roof deck on steel framing.  The balance of the roof framing consists of light gage stick framing.  The lateral load resisting system consists of a steel moment frame supported on a shallow foundation system.