Aircraft Hangar Slabs in Polk County

Airport land, a private strip and who signs off first

Before anyone talks thickness, find out who owns the ground. Lakeland Linder belongs to the City of Lakeland, Winter Haven Regional to the City of Winter Haven, Bartow Executive to the Bartow Municipal Airport Development Authority and Lake Wales Municipal to the Lake Wales Airport Authority. A hangar on any of them answers to that owner and its lease terms as well as the building department, so ask the airport office what it wants to review before your drawings are final.

On your own acreage the owner question goes away, but the permit doesn't. Polk County's building page says any building needs a permit regardless of size, and inside Lakeland, Winter Haven, Bartow or Lake Wales city limits the city's own office takes the application. Our Bartow and Lake Wales pages cover the local permit desks.

What each Polk airfield means for trucks, pumps and pour dates

A hangar slab is a lot of concrete arriving at a place built for airplanes. Each field raises its own logistics question.

• Lakeland Linder International (LAL). An 8,500 by 150 foot runway, a control tower and hangar parking, with 298 based aircraft in FDOT's 2023 count. It also hosts SUN 'n FUN, which runs April 6 to 11, 2027 and draws over 2,000 aircraft. Don't plan ready-mix trucks for that week; ask the airport how gate access changes and book around it.
• Winter Haven Regional (GIF). City owned, 3 miles northwest of town, with a 5,005 foot runway, hangars and tiedowns. If you're building near Winter Haven, ask where trucks stage and how they cross the field.
• Bartow Executive (BOW). FAA remarks flag overhead power lines in the T-hangar area with about 20 feet of vertical clearance. A pump boom has to work under that, so we look at where the truck can set up before we price a pump.
• Lake Wales Municipal (X07). A 5,400 foot runway with tiedowns, owned by the airport authority, 2 miles west of town.

The National Weather Service dates the rainy season here from late May into October, so a big summer floor gets an early start and a backup date.

Bi-fold, hydraulic or sliding: the door sets the front footing

Pick the hangar door before the slab drawing is finished. A bi-fold, a hydraulic single panel and a sliding door each come with their own drawing, and that drawing tells the engineer whether there is a floor track, where the embeds go, and how deep and level the concrete under the opening has to be.

A track that drifts out of line gives you a door that binds, so the strip under it gets more attention than the middle of the floor. We clear the organics, compact the base under the full door width, and form, reinforce and pour the door-track footing with the floor rather than as a second job. Our price basis includes that footing.

Three numbers from the door supplier save a change order later: the clear opening width, the door height, and the track or pocket detail. If the door hangs from the frame and never touches the floor, its weight still comes down through the columns beside the opening, and the engineer sizes those column footings on the foundation sheet.

Some owners also want a ramp or a concrete apron out to the taxiway. Ask the airport owner first, since that concrete sits on their ground, and add it to the drawings so it gets priced with the floor. If a loading door is part of a mixed hangar and shop, our warehouse and commercial slab page covers dock leveler pits and thickened door edges.

Floor thickness: where our price basis starts and the engineer takes over

Our hangar pricing assumes a reinforced slab 6 to 8 inches thick. That's a starting basis, not a design. The 3-1/2 inch minimum in the Florida Building Code's residential volume is written for house floors and doesn't set a hangar slab. Aircraft weight, wheel spacing, tow tugs and jack stands do, and your engineer puts the answer on the sheet. Our hangar slab thickness guide walks through how the engineer gets there and what each extra inch costs.

Two things on the drawing change the bid as much as thickness. One is fill: if the footings will bear on compacted fill deeper than 12 inches, the Florida Building Code calls for a geotechnical investigation that sets lift thickness and density testing. The other is the joint plan. NRMCA caps contraction joint spacing at 24 to 36 times the slab thickness and never over 15 feet, so on a 6 or 8 inch floor the 15 foot cap governs, with panels close to square. On a 60 foot wide hangar that means at least four panels across.

Wind design sits on the same sheet. The engineer picks the risk category and design wind speed under the Florida Building Code, and the anchors and hold-downs at each column follow from it. If the hangar is a steel kit, our metal building foundation page covers the anchor-bolt side.

Epoxy-ready finish, floor slope and a drain line

A hangar slab gets looked at more closely than a barn floor. Oil drips show, tires squeak on a slick trowel finish, and a coating is only as good as the surface under it. Our hangar range includes an epoxy-ready finish. The coating is a separate trade and a separate bill.

Tell us about the coating before the pour, because the finish is chosen while the concrete is placed. Then ask your coating installer two questions and write the answers on the schedule: how long they want the slab to age before they start, and whether they want a moisture test first. NRMCA's curing guidance puts the curing period at 3 to 7 days, but a coating can call for longer.

What goes under the slab matters to the coating too. The residential code lets garages and other unheated accessory buildings skip the vapor retarder, but that's a house-code rule, Florida's termite rule still calls for poly over treated soil, and a hangar slab that will be coated is worth a conversation between your engineer and the installer before the sheet goes down or doesn't.

Slope and drains are drawing items. If you want the floor pitched toward the door so wash water runs out, or a trench drain across the opening, put it on the plan with the fall shown. We set forms and screed rails to the slope you draw, so it has to be on paper before pour day, not decided on the truck.

T-hangar rows and multi-unit floors

A T-hangar slab carries several hangars on one long floor, with nested units facing alternate sides. The concrete questions change with that shape.

• Placements. A long row rarely goes in as one truck sequence. We plan where each day's pour stops so the construction joint lands on a unit line, not in the middle of someone's floor.
• Door footings for every unit. Each door opening gets its own track or edge detail. On a row of eight, that's eight openings the door supplier has to detail.
• Joints and walls. Partition walls between units want a joint or a thickened strip under them, per the engineer, so a crack doesn't wander across a wall line.
• Access during the job. At an airport the neighbors are taxiing airplanes. Ask the owner which taxilanes stay open while trucks are on site.

The Bartow Executive power-line remark is a good example of why we walk the site before pricing. A boom that can't swing over the row means a different setup, more hose, or a chute pour from the other side. For a single box hangar on your own land in Lakeland or Haines City, none of that applies and the job is simpler.

$10 to $18 a foot: what puts a hangar floor at either end

Our range for a hangar slab is $10 to $18 per sq ft, and hangar projects run $36,000 to $120,000 or more. That basis is a 6 to 8 inch reinforced slab, the door-track footing and an epoxy-ready finish. A 60x60 hangar slab is 3,600 sq ft, which puts it at about $36,000 to $65,000.

What moves a hangar slab inside that range:

• Thickness and steel. An 8 inch floor with bar both ways is a different pour than a 6 inch floor.
• Fill. Footings on more than 12 inches of compacted fill bring imported fill, lifts and density tests.
• The door. A wide opening means a long track footing and more embeds.
• Access. Pump setup, power lines, gate rules and taxilane closures add time.
• Finish and slope. A coating-grade finish, pitched floor or trench drain adds labor.

The table shows the square-foot math for common sizes. Your number comes from a free written estimate after we see the site and read your drawings.