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Morabito Consultants
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Morabito Consultants Delivers Maryland's Tallest Tilt-Up!

MC, along with Powers Brown Architecture, designed Maryland’s first five-story, tilt-up constructed office building. Construction of the 126,283 SF office building was completed last year as part of the St. Johns Properties’ I-97 Business Park Phase III development, a 67-acre business community near the Baltimore-Washington International Thurgood Marshall Airport.

The building design utilized a 4+1 tilt-up construction method. The panels were cast and installed in two sets. The first set of panels are approximately 60’ tall by 30’ wide and serve to support all four levels of floor framing. The second set of panels are 18’ tall by 60’ wide and serve to complete the fifth floor. Because the crane’s capacity needed to be greater than the heaviest panel, the 4+1 method and the use of lightweight concrete allowed the concrete contractor (Precision Concrete Construction Company, Inc.) to use a more economical crane. And, since the top story is only supporting the roof, the required thickness of the top panels was 4” less than the four-story panels below.

The structural design of the top story panels presented a challenge. The architect designed a 55’ wide strip window within each 60’ wide panel. This meant that the concrete wall above the window would need to span 55’. MC introduced additional inconspicuous supports to keep the panel thin. The design solution employed (2) HSS tube columns for support along the 55’ span. These columns were field-welded to steel plates embedded in the 4-story panels. The top-story panels were then lifted into place and similarly connected to the HSS tube columns. The steel columns were hidden behind glazing to create the appearance of a 55’ wide, uninterrupted strip window.

Resistance to lateral loads on the building was provided using the perimeter tilt-up panels as shear walls. The building design also included large steel girders that were framed into pairs of panel legs to accommodate the large girder reactions. Connection of the panels to the joints is typically not done to avoid cracking due to shrinkage and thermal expansion and contraction. A horizontal “slip connection” was detailed to allow the panels to behave as individual elements while providing the required girder support.

The tilt-up construction design saved the owner nearly $10.00 per square foot—approximately $1.26 million in construction costs—over the cost of a standard steel-frame building. These savings were obtained through the elimination of perimeter steel, moment frames, and masonry shaft walls. The temporary shoring of panels with helical piers at the exterior of the building resulted in cost savings by aiding the steel contractor, Strait Steel, in the steel erection.
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MC is proud to be part of the design team with Ayers Saint Gross & The Whiting-Turner Contracting Company on the relocation of these three dormitories at Goucher College. Check the link below for more info!! http://www.baltimoresun.com/news/maryland/education/higher-ed/bs-md-goucher-move-20170619-story.html
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Two MC projects have received 2017 PTI Design Awards! GBMC Daffodil Garage Emergency Repairs & Waterproofing has been chosen for an Award of Merit, and Dolphin Tower Emergency Structural Repairs & Rehab has been chosen for the Award of Excellence in the Repair, Rehab, & Strengthening Category for the 2017 Post-Tensioning Institute Awards. Many thanks to Post-Tensioning Institute (PTI) and Concrete Protection & Restoration Inc. Congrats to all involved!
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4/17/17
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This past Sunday (8-21-16) The Baltimore Sun published the article linked below discussing the uptick of office construction in the Baltimore metro area. MC is proud to partner with many of the developers mentioned such as St. John Properties, Inc. and Caves Valley Partners, and we look forward to future collaborations! The featured photo shows the construction underway at the Annapolis Junction Office Building that MC designed alongside Powers Brown Architecture. Click the link below for more information. http://www.baltimoresun.com/business/bs-bz-office-market-update-20160819-story.html
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Morabito Consultants Inc. is pleased to be the structural engineer of record working with MGMA in the design of two new 1 story flexible retail buildings located in Prince George's County, MD at the Brandywine Retail Center. The structural design shall consist of a steel framed roof. The exterior of the building will consist of EIFS and glass curtain wall. Construction is set to begin in fall of 2016.
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Morabito Consultants Inc. is pleased to be the structural engineer of record with Brasher Design in the design of new 4 story 105,000 square foot office building in Maple Lawn, Maryland for St. John Properties, Inc. The structural design shall consist of a steel framed structure that will serve to support a composite metal deck and a reinforced framed concrete slab. The exterior of the building will consist of a dryvit and glass curtain wall. The design of the building will be completed in the Spring of 2016.
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Morabito Consultants is pleased to be the structural engineer of record working with Powers Brown Architecture on a new 5-story, 126,000 square foot concrete tilt-up office building in Anne Arundel County, Maryland for St. John Properties, Inc. The structural design shall consist of steel framed floor structure with composite metal deck & reinforced concrete slab supported by interior columns and exterior tilt-up concrete panels. The exterior of the building will consist of an extensive amount of glass along with the brick façade at the base and architectural finish tilt-up concrete panels. The design of the building will be complete in the Spring of 2016.
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Construction is now complete at the brand new US Lacrosse headquarters located in Sparks, MD (just down the street from our office)!! The facility, located on 12 acres, houses the US Lacrosse Headquarters and Hall of Fame Museum in addition to a state of the art Training Center and field for the national lacrosse team. MC would like to congratulate Rubeling & Associates, Inc. & Gilbane Building Company on another successful project.
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2016-05-20
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Construction is well underway at Little Patuxent Square with concrete work scheduled to wrap up in early summer 2016. Little Patuxent Square is a large mixed use facility located in Columbia, MD consisting of Apartments, Office space, Retail space, and 5 levels of garage parking. We look forward to continued success with DVA Architects, LLC and Costello Construction! See our initial post on April 10th, 2015 for additional project info and renderings!
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2016-04-15
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MC has partnered with Pruitt Corporation and WA Brown & Associates Architects to design a new 63,000 sq. ft. tilt-up warehouse known as Books International located in Dulles, VA.  For this project, MC designed the concrete tilt-up wall panels to resist all seismic and wind lateral forces in lieu of providing steel moment frames within the structure.  We look forward to continued success through the completion of the design and construction.  
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2016-03-18
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