A self storage developer with a site under contract usually has an architect sketching the unit mix within weeks. The structural engineer often joins later, and that gap is where many redesigns start. Good self storage building design comes from the architect and the structural engineer working out the layout and the structure together, from the first concept onward. This guide from Metal Engineers LLC, a structural engineering firm for steel buildings and multi-story self storage based in Georgia, explains who does what on a self storage design team, where the architect's and the structural engineer's work overlap, and how to keep the self storage building plans coordinated from concept to permit.
Who Is on a Self Storage Building Design Team
Most self storage projects bring together the same core roles, whether the building is one story or five:
The developer or owner. Sets the program: number of units, unit mix, climate control, number of stories, and budget.
The self storage architect. Lays out the building and the units, corridors, offices, stairs, and elevators, and leads the overall drawing set.
The structural engineer. Designs the frame, floors, lateral system, and foundations, and produces the sealed structural drawings and calculations.
The civil engineer. Handles the site: grading, drainage, paving, and utilities.
The geotechnical engineer. Tests the soil and writes the report the foundation design depends on.
The metal building manufacturer, when a pre-engineered system is used. Designs its own frames, girts, and panels.
The general contractor. Prices and builds the project from the finished drawings.
Each role owns its own drawings, but the drawings have to agree. Most permit delays on self storage come from places where they do not.
Where the Architect's and Structural Engineer's Work Overlap
Self storage building design looks simple on paper: long rows of units off a corridor. In practice, the architectural layout and the structure shape each other at several points:
The column grid. Column spacing has to fit the unit sizes and corridor widths on every floor. A grid that works for the unit mix but not the steel, or the other way around, forces one side to redesign.
Bracing and wall lines. Braced frames need wall lines where doors and corridors cannot go. The architect and structural engineer place them together so they fall between units or around stair and elevator cores.
Floor depth and building height. The depth of each floor system adds to the building's total height, which can run into zoning height limits the architect is working under.
Openings. Elevator shafts, stairs, loading areas, and large roll-up doors all interrupt the structure and need framing designed around them.
Roof and exterior. Roof slope, parapets, canopies, and exterior wall systems all carry loads back to the frame.
On multi-story self storage, these overlaps multiply, because every decision repeats on every level. The guide to structural steel engineering for multi-story self storage covers the frame side of these choices in more detail.
When the Structural Engineer Should Join
The most expensive time to bring in a structural engineer is after the architect's layout is finished. At that point the column grid, wall lines, and building height are locked, and any structural problem means redrawing the plan. The best time is at concept, while the unit mix, number of stories, and framing system are still open.
Early structural input usually covers a few questions: whether the building should be pre-engineered, conventional steel, or a combination; what column grid fits both the units and an efficient frame; where the lateral system can go; and what the foundations are likely to need once the geotechnical report is in. The guide to the cost to build multi-story self storage explains how those early choices affect the cost to build a self storage facility.
Keeping Self Storage Building Plans Coordinated
A coordinated drawing set moves through plan review faster. A few habits help keep the architectural and structural self storage building plans in step:
Share one grid. The architect and structural engineer work from the same column grid and level datums from the first sketch.
Assign every piece. Decide early who designs the foundations, elevated floors, stairs, canopies, and anything outside a pre-engineered metal building package.
Get the geotechnical report early. Foundation design waits on it, and a late report holds up the whole structural set.
Coordinate before each submittal. Overlay the architectural and structural plans to catch columns in corridors, braces across doors, and openings that were never framed.
Answer review comments together. A comment on one set often touches the other.
The guide to structural calculations and drawings for self storage permits lists the most common reasons structural review gets held up.
What the Structural Engineer Delivers
On a self storage project, the structural engineer's part of the design typically includes:
Design loads for the site, including stored contents, cart traffic, roof, and wind
The framing system and column grid, coordinated with the architect's layout
The lateral system and its locations
Foundations designed from the geotechnical report
Elevated floors, elevator framing, and stair framing on multi-story buildings
Sealed structural drawings and structural calculations for the permit
Responses to plan review comments on the structural package
Working With Metal Engineers LLC
Metal Engineers LLC provides structural engineering for steel buildings and self storage, with multi-story self storage as its lead service, working alongside the developer's architect and contractor. The firm's licensed structural engineers each bring 12 to 27 years of experience. Based in Georgia, Metal Engineers LLC is registered in 34 states, including Georgia, Florida, Texas, North Carolina, and Tennessee.
Metal Engineers LLC designs the structure; construction is handled by the developer's chosen contractor. To talk through a project, contact Metal Engineers LLC, call 404-338-0473, or email contact@metalengineers.com.
Frequently Asked Questions
Do I need an architect and a structural engineer for a self storage building?
Most commercial self storage projects use both. The architect lays out the building and leads the drawing set, while the structural engineer designs the frame and foundations and seals the structural drawings.
When should a structural engineer get involved in self storage building design?
At the concept stage, while the unit mix, number of stories, and framing system are still flexible. Bringing the engineer in after the layout is finished often leads to redesign.
What goes into self storage building plans?
Typically architectural plans for the layout, units, and exterior; structural drawings and calculations for the frame and foundations; and civil drawings for the site. When a pre-engineered metal building is used, the manufacturer's drawings are included too.
Who designs the foundations for a pre-engineered self storage building?
Usually the project's structural engineer, using the forces the manufacturer's frames put on the foundation and the site's geotechnical report. Settling this at the start keeps the drawing set complete.
Where is Metal Engineers LLC registered?
Metal Engineers LLC is based in Georgia and registered in 34 states. Contact the firm to confirm a specific project location.