Clarksville is the anchor of Middle Tennessee's North / Northwest submarket, northwest of Nashville on I-24 and near Fort Campbell. With roughly 167,000 people at the 2020 census it is a major city in its own right, and its industrial base is built around manufacturing rather than pure distribution: the LG Electronics washer plant and the Hankook Tire plant are both here, along with the suppliers, logistics providers and warehouses that grow up around large plants. Racking in Clarksville differs from racking in La Vergne or Mt. Juliet in three ways: the commodities are harder, the seismic values are higher, and the December 2023 tornadoes are a recent reminder that post-storm inspection is not hypothetical. This guide covers all three.
Plant-Driven Warehousing: Flow Changes the Geometry Before It Changes the System
The modern buildings serving Clarksville's plants are, in rack terms, often a familiar Class A problem -- tall clear, ESFR sprinklers, large floor plates -- with one important difference. They exist to serve a production schedule.
In a supplier or plant-support building, the receiving face and the shipping face are set by where material comes from and where the line is, not by a generic dock plan. Inbound components have to land where they can be put away fastest, and outbound sequencing has to flow toward the trucks feeding the plant. Get that backwards and you have built a system that makes every pallet travel the length of the building twice.
Within that geometry the density decision is the normal one, driven by SKU velocity and pallet count: tall selective where the profile is broad, push-back or pallet flow where a handful of part numbers carry the volume, drive-in where the product is genuinely homogeneous. With ESFR protection overhead, flue space, rack depth and maximum storage height are set by the sprinkler design, and clearance from the top of storage to the sprinkler deflector -- not the deck height -- is what actually caps the top beam level.
Seismic Is Not a Formality Here
Middle Tennessee is typically ASCE 7 Seismic Design Category B or C, depending on soil site class and location, and the values rise as you move northwest toward Clarksville and West Tennessee, closer to the New Madrid Seismic Zone. Of the markets we serve, Clarksville is where seismic design is most likely to shape the rack.
- Anchors and base plates are calculated, not catalog defaults. Under ANSI/RMI MH16.1, base-plate size, anchor count and frame bracing are checked against the site's seismic values. A tall, heavily loaded frame can need more anchorage than the same frame in a lower-seismic market.
- Used rack needs re-checking. Rack moved from a lower-seismic market may have base plates, bracing or anchor patterns that were adequate there and are not adequate here.
- Field substitutions are not allowed. If an anchor cannot be installed as designed -- a thin slab, a rebar conflict, a post-tension tendon -- the fix is an engineered alternative, not a smaller anchor and optimism.
Drawings are sealed by a Tennessee-licensed PE and the seismic basis is part of the permit submittal. We never quote seismic coefficients from a table; they come from the site's location and soil class.
Tires, Appliances and the 6-Foot Trigger
Clarksville's two best-known plants make products whose storage gets the fire marshal's attention, and the same is true of much of what moves through the buildings that support them.
Under IFC Chapter 32, high-piled combustible storage requirements generally apply where the top of storage exceeds 12 feet -- but the threshold drops to 6 feet for high-hazard commodities, and both rubber tires and Group A plastics are in that group. Tire storage also carries its own specific provisions in the fire and sprinkler codes. On the appliance side, classification depends on the specific product and its packaging rather than on the industry: cartoned goods with significant expanded foam or plastic content can move a Class III or IV commodity into the high-hazard band.
The practical effect is that a rack system which would be unremarkable holding cartoned dry goods becomes a full high-piled storage installation once it is holding tires, plastic-heavy components or foam-packed finished goods -- with a defined sprinkler design, required flue spacing, aisle widths and fire department access all in scope at design time. Under the model code, the operational permit is required above 500 square feet of high-piled storage area; confirm any local amendment. Classify the commodity before laying out the rack. Retrofitting flue space and sprinkler capacity into an installed system is far more expensive than designing them in.
City, County and Who Reviews It
Tennessee adopts building and fire codes statewide through the State Fire Marshal's Office, and cities and counties that enforce their own codes do their own plan review. Clarksville is not part of Metro Nashville, and none of the Metro Codes process applies here.
- Inside Clarksville city limits, the city's building codes department reviews the building permit and the city fire department or fire marshal handles the high-piled review.
- Unincorporated Montgomery County parcels go through the county building codes office. In some unincorporated areas, plan review routes through the State Fire Marshal's Office -- confirm which applies to your parcel.
- Up the road, Springfield is in Robertson County with its own city and county offices, so a project there is a different submittal again.
Confirm the reviewing office from the parcel at the very start of a project rather than discovering it at submittal. We ask the office for its current requirements directly rather than assuming a metro-wide answer. Our Greater Nashville permit guide covers the full sequence.
After the Storm: Post-Tornado Rack Inspection
The December 9, 2023 tornadoes struck Clarksville, along with Madison and Hendersonville closer to Nashville. Severe weather is part of operating in Middle Tennessee, and rack is one of the building systems most likely to be overlooked once the roof and the doors are fixed.
After a storm, treat every affected rack row as uninspected until a qualified person has checked it:
- Anchors and base plates -- wind loading on the building, debris and shifted loads can loosen anchors or crack base plates.
- Plumb and alignment -- shoot elevations across whole rows; a row that moved will show it as a pattern.
- Beams, connectors and safety clips -- impact from falling or shifted loads can dislodge clips or deform connectors without obvious damage at eye level.
- Water -- roof breaches wet the slab and the bottom of the rack; corrosion at base plates shows up months later, not the next day.
A written post-event inspection report also gives you the documentation your insurer and safety program will ask for. Humidity is a quieter version of the same problem: hot, humid summers bring slab sweating and condensation, and base plates near dock doors corrode first.
The Slab: Verify It, Do Not Assume It
Anchoring rack to an unverified slab is the most common serious mistake in warehouse racking anywhere, and in a market where anchors are doing seismic work it matters more. Base plate punch-through, anchor pull-out and failed inspections all trace back to the same root cause: someone assumed a slab thickness instead of confirming it.
The standard workflow on any Clarksville project is:
- Get the documents first. Slab drawings and the geotechnical report, where they exist, are the best input we can have.
- Core in multiple locations, not one, where the documents are missing or the building is older. A single reading is a data point, not a slab profile, and the thin spot governs the anchor design.
- Check for post-tensioning before drilling anything. Ground-penetrating radar maps the tendons, the anchor pattern is set to clear them, and the scan record is kept.
- Engineer a remedy where the pour cannot carry the load. A footing detail or slab-repair pad engineered into the package -- not a larger anchor and optimism.
Heavy Loads and Mixed Storage
Not everything in a plant-support building is uniform palletized product. Dies, tooling, machine components and maintenance spares routinely exceed what a selective system rated for a nominal pallet load can carry, so heavy-beam selective with an engineered anchor package is common. Long goods belong on cantilever rather than being forced onto pallets, and tire storage may call for purpose-built tire rack rather than standard pallet positions.
Where a facility handles flammable liquids, solvents or other regulated materials, storage areas typically require physical separation from general commodity storage under NFPA 30 and IFC requirements, containment decking rather than standard wire decking, and in some configurations a separate sprinkler zone. We design that segregation into the primary layout before drawings are produced; retrofitting it almost always costs more than building it in.
Practical Steps for a Clarksville-Area Racking Project
- Settle the jurisdiction first. City of Clarksville or unincorporated Montgomery County, and for county land whether review is local or through the State Fire Marshal's Office. The parcel decides, not the mailing address.
- Classify the commodity before the layout. Tires and Group A plastics drop the high-piled trigger from 12 ft to 6 ft, and on this corridor that is routine rather than exceptional.
- Get the seismic basis right. Site class and location set the values; base plates, anchors and bracing follow from them.
- Verify the slab from drawings, the geotechnical report and cores, and scan for post-tension tendons before anchoring.
- Lay out from the flow. In a plant-support building, receiving and shipping faces follow the production schedule.
- Put a post-storm inspection plan in writing before the next severe weather season, not after it.
Nashville Pallet Rack serves Clarksville and the I-24 Northwest corridor. Call (615) 551-3677 to start a project.