Engineering Consultants

Atlantic Engineering has over 25 years of experience as Structural Consultants for Commercial, Residential, Institutional, Industrial, and More.

Licensed in SC, GA, FL, AL, MS, OK, CO.




Atlantic Engineering is a full service structural firm.  We are equipped to provide a full set of drawings for our clients designs whether that be a large Commercial building or a small Residential remodel.  Our number one priority is to make sure that our clients projects not only meet the current building codes, but also to provide comprehensive drawing plans.


Your home is your largest investment and we want to make sure you are getting what you pay for.  We work diligently with the architect and the contractor to make sure you project stays on schedule and money is not being wasted on unnecessary components.  The list below are some of the residential projects we have designed.

  • 2507 Cameron Blvd – View2507 cameron blvd
  • 323 W. Ashley St – View323 w. ashley st.
  • 2744 Rush Haven Dr – ViewRush Haven Dr.
  • #5 Morgan Place Dr – ViewMorgan Place
  • 24 Sand Dollar Dr. – View24 Sand Dollar
  • 455 Island Park Dr. –   ViewIMG_3907-EFFECTS
  • 123 Ocean Course Dr. – ViewIMG_3713.jpgIMG_3716
  • 7 Nashmor Dr. – Viewbetros
  • 2401 Palm Blvd – View2400 Palm
  • 87 Salt House Ln. – ViewSalt House
  • 1802 Ion Ave. – View1802 Ion Ave
  • Whitepointe Community – View.  Atlantic Engineering is responsible for all the homes in the Whitepointe Community.  Working with the North Beach Builders we designed all of North Beach Plantation including the Welcome Center.  white-big

The Team

Marc Caldwell, P.E.

Structural Engineer/Owner


B.S. Civil Engineering, Clemson University: 1994

Professional Registration:

Professional Engineer: SC, NC, GA, FL, MS, AL, LA, OK, CO,


Marc has 25+ year of experience in the construction industry. Marc is the Responsible Engineer in charge of daily operations for Atlantic Engineering. During his career Marc has been the E.O.R. for military, institutional, commercial, residential, educational and industrial projects. Executed structural designs including retaining walls, deep and shallow foundations, timber framing, light gage metal framing, heavy timber trusses, steel moment frames, steel trusses, masonry, and concrete.

Performed inspections of historical structures, naval and air facilities, commercial buildings, industrial facilities.

Prepared and administered construction documents, bid packages, and contract documents for structural repair projects including remediation for historical structures. Provide proposals, design services, field review, shop drawing and submittal review for regular client accounts.

Phone: (843) 906-1337

Deonne E. Long, P.E.

Principal Structural Engineer


B.S. Civil Engineering, University of South Carolina: 1993

Professional Registration:

Professional Engineer (PE): SC, VA, MD, GA

Professional Structural Engineer (SE): GA


Mr. Long brings Atlantic Engineering 27 years of broad ranging structural engineering expertise.  His background encompasses decades of structural consulting engineering along with experience in the large-scale structural steel fabrication industry. He specializes in new building design, facility renovations and forensic evaluations.  He has served as the lead structural engineer on a wide range of project types, from small to exceptionally large – including both new and rehabilitation/renovation of existing structures.  He works with clients to bring to life many varying, unique, and/or complex architectural visions. Mr. Long has comprehensive knowledge of current design standards and codes and is versed in design methods for a broad range of construction materials and methods including structural steel, cast-in-place concrete, precast concrete, masonry, light-gage steel framing, light frame wood, and heavy timber. In addition, Mr. Long has extensive experience with design of lateral force resisting systems for high-wind and high-seismic regions. 

Mr. Long currently serves Atlantic Engineering as a principal structural engineer, leading structural design efforts on a wide array of building types and other varying structures. Additionally, he provides forensic evaluation consulting for various properties and structures for the purposes of assessing distressed conditions for assessment and repair, as well as for determining renovation opportunities.

Phone: (803) 622-4758

Drew Davis

Structural Designer/Project Manager


A.A.S. Engineering Design Graphics, Trident Technical College: 2012


Drew has worked in the construction industry for over 15 years. Drew entered the construction industry building fences for new homes and working his way up to project manager and site supervisor for a local fence company. After getting his degree, Drew has worked for Atlantic Engineering and is the lead BIM coordinator, Cad Operator, and Project Manager.

Phone: (843) 906-1337