Every trailer that backs into a warehouse ends up on a few square feet of steel and rubber: the dock leveler, the bumpers and the seal. When that package is wrong, the trailer sits too high or too low, the forklift bounces over a lip and the door will not close tight. When it is right, nobody notices. We plan the dock wall before the slab is poured so that the equipment goes into the building the way it was meant to.
Dock equipment is the point where building construction and equipment supply meet. The pit is formed in concrete, the leveler frame is cast in or set in a blockout, the door frame mounts on the tilt panel and the electrical drops land at the right spot. A miss of an inch at any of those can mean a field cut or a change order. We coordinate each trade so the dock wall goes in once, and we keep a shop-drawing log so the leveler schedule, door schedule and embed plates all match the pit dimensions on the structural drawings.
The package covers dock levelers, vehicle restraints, bumpers, seals or shelters, overhead sectional doors and the lighting and signals that run the traffic.
What the dock package includes
Our dock scope starts with the pits. We form and pour them to the leveler manufacturer's dimensions, with drains where the pit may collect water, and we set the frames to the finished floor elevation so the lip meets the trailer bed. Mechanical, air-powered and hydraulic levelers all need slightly different pit details, and we confirm the model before forming.
Around the leveler, we install bumpers, seals or shelters, vehicle restraints and overhead doors. Wind-rated door tracks and reinforced panels are specified where the design calls for them, and dock lights and communication signals tie into the owner's traffic plan. Our work on cross-dock layouts often involves dense dock walls with doors every 12 feet, which tightens every tolerance.
Dock height, capacity and weather
The first question is trailer height. Standard trailers run around 48 inches at the bed, but tanker, reefer and container chassis do not, and the leveler range must accommodate what will back in. We ask operators which trailers they run and design to the extremes, not the average. Capacity is the second question: a leveler rated for 30,000 pounds will not satisfy an operation moving heavy loads with large forklifts.
Weather is the third. Oklahoma averages about 59 tornadoes a year according to the National Weather Service Norman office, and a 1999 outbreak destroyed a foodservice distribution center in Stroud that was never rebuilt. That history is why we specify wind-rated overhead doors and detail the connections to the panels with care. A dock door is the largest opening in the wall, and in a wind event a large opening is among the first places a building gets tested.
Coordination with the slab and the shell
We schedule the dock package to the slab pour. Pit forms are set and surveyed before the pour, frames are installed before the placement, and the finished floor elevation is verified at the dock wall. If the equipment ships late, we can pour the slab around blockouts, but the cost and risk rise, so we put the order on the long-lead list at the start.
Our approach to truck courts and trailer yards matters here as well. The approach slab, drainage and slope in front of the dock decide how trailers sit at the leveler. If the court slopes the wrong way, water runs into the pit and the leveler works against gravity. We coordinate grading with the dock design so the geometry works at both ends.
Where we install dock packages
Dock packages vary by building. A truck terminal wants dozens of closely spaced doors and heavy-duty levelers, while a cold storage facility wants insulated seals and vestibules that keep outside air out. A distribution building lies between those, with a mix of dock-high doors and a drive-in door or two.
Rail changes the picture. A site such as the 15-acre industrial parcel in Shawnee bordered by a BNSF rail spur could include both truck docks and a rail unloading position, and the Tulsa Port of Catoosa added a 720-foot dock with a rail line and multiple cranes in 2016. Rail-served buildings use different door types and floor details, and we plan them separately. See our pages on Shawnee and Catoosa and the port.
What changes the dock budget
Door count and leveler type account for most of the cost. A hydraulic leveler costs more than a mechanical one but is easier on an operator who works all day, and vehicle restraints add cost but reduce trailer creep, which is a safety item. Seals and shelters vary with exposure, and insulated or energy-saving options add to the package.
Installation and electrical add to the equipment price. We get the electrical designer to size the drops early, because retrofitting a power feed to a finished wall is expensive. We also advise owners to choose a single supplier for the package where possible, since warranty and service become simpler. If you are comparing a speculative shell and a custom build, we can show how the dock budget differs. High-volume users such as retail distribution networks tend to want more doors and heavier levelers than a low-turn storage tenant, and the budget should show that choice on its own line.
Give us the trailer mix and the door count
Tell us the trailers you run, the door count and the site, and we will draw the dock wall, order the equipment early and keep the pour on schedule.
Common Questions
Mechanical, air or hydraulic levelers?
Mechanical levelers are simple and low cost, air-powered models are smooth and need little maintenance, and hydraulic levelers are the most common for heavy use. The right type depends on traffic, budget and maintenance staff. We help owners weigh those factors and install whichever one fits.
Do we need vehicle restraints?
Restraints reduce the risk of trailer creep or early departure while a forklift is inside the trailer, and many operators now treat them as standard. Some insurers and safety programs ask for them. We price them as an option so owners can decide.
How many dock doors should we install?
A common starting point is one door for each 10,000 square feet in a warehouse, with cross-dock buildings going much denser. Your shipping profile decides the number. We lay out the dock wall for your trailer counts and leave knockouts for future doors.
Can the dock package be added after the slab is poured?
Yes, but it costs more. Cutting pits into a finished slab damages the floor and slows the schedule. We strongly prefer to form the pits with the slab and, if equipment is not final, set blockouts that can be filled.
What wind rating should dock doors have?
The structural engineer sets the design wind pressure for the building, and the doors must meet it. In Oklahoma, where tornado activity peaks in spring, we choose doors rated for the wind load and reinforce the connections to the panels.