When a third-generation family garage outside Marion called us about adding an auto lift for their restoration bay, the first question wasn’t which lift they wanted — it was whether their 1970s-era slab could actually handle one. Their grandfather poured that floor for oil changes and brake jobs, not for a two-post lift swinging a rust-eaten fendered classic six feet in the air. That’s the reality for a lot of family-owned shops doing metal work and frame-off restorations: the equipment list is the easy part. The site survey is where projects get delayed, or done right. We’ve been through this exact conversation more times than we can count, and it always starts with a tape measure.
Browse the two-post and four-post models we install across Iowa, then let us run the site survey before you buy anything.
Why Restoration Shops Need a Different Auto Lift Survey Than a Tire Shop
A quick-lube bay and a restoration bay ask completely different things of an auto lift. Tire shops need throughput — cars in, cars out, drive-on ramps if possible. Restoration and metal work bays need reach, stability, and clearance for a car that might sit up in the air for weeks while a quarter panel gets replaced or a frame gets straightened. That changes what we look at on a survey. We’re not just checking bolt spacing; we’re checking ceiling height with the vehicle’s hood open and doors swung wide, because a shop pulling fenders and doors off a classic needs working room the manufacturer’s spec sheet doesn’t account for.
We also ask what’s actually going up on the auto lift. A rust-repair Bronco is a different animal than a modern unibody sedan — jack points can be compromised, floor pans thin, and frame contact pads may need repositioning mid-job. For family shops doing this kind of work generation after generation, we usually steer toward a two-post with adjustable arms and enough lifting capacity to handle a heavier frame or a vehicle loaded with extra steel during fabrication. It’s not just about picking a model off a page; it’s about matching the auto lift to the actual work that bay does every week.
Concrete Thickness and Anchor Depth: The Numbers That Actually Matter
Every site survey starts underground. For most two-post lifts we install, we want a minimum of 4 inches of structurally sound concrete, though we’ll often ask for closer to 4.5 to 5 inches on higher-capacity units or older slabs with unknown rebar. We’re not guessing at this — we core-check or reference original pour records when a shop has them, because a slab poured decades ago for a family garage may not match today’s anchor bolt embedment requirements. Anchor bolts typically need several inches of clean embedment into solid concrete, not into a crack, a control joint, or a patch someone poured over a old post hole.
We’ve walked into more than one restoration shop where the floor looked fine to the eye but had hairline cracking radiating from an old lift footprint, or a seam from a repair pour that wouldn’t hold anchors reliably. In those cases we talk through options — sometimes it’s a small localized pour, sometimes it’s relocating the auto lift a few feet to land on cleaner slab. It’s a lot cheaper to find this out during the survey than after the lift arrives on a truck and there’s no way to safely set it.
Ceiling Height, Bay Width, and Column Spacing
Once we know the floor will hold it, we measure the room. For a typical two-post asymmetric lift, we’re looking at roughly 10 to 12 feet of clear ceiling height as a baseline for full-rise lifting, and more if the shop wants to run a taller lift or work under a raised vehicle without ducking. Bay width matters just as much — most two-post columns need somewhere in the 10 to 12 foot range between them to give enough drive-through clearance and door-swing room, and restoration bays often want extra because they’re rolling in fenders, engine stands, and body carts alongside the vehicle.
Column spacing isn’t one-size-fits-all either. Wheelbase on the vehicles a shop services determines how far apart the columns can sit while still balancing the car properly on the arms. A family shop that works on everything from 1960s trucks to modern crew cabs needs us to check the widest and longest vehicles they expect to lift, not just the average one. We’ve seen shops order a lift based on a brochure photo and then find out their column spacing doesn’t leave room for a full-size crew cab door to swing open once it’s up. That’s a conversation we’d rather have on survey day than install day.
Power, Air Lines, and What’s Already Running to That Bay
Most two-post and four-post auto lift installs need dedicated electrical service — commonly 220 volt single phase for the power unit — and we always confirm what’s already run to the bay before we quote anything. Older family shops sometimes have outdated panels or shared circuits that were fine for a compressor and lights but weren’t sized for a lift’s hydraulic power unit. We’d rather flag an electrical upgrade during the survey than show up on install day and find out the breaker panel can’t support it.
We also check where the power unit itself needs to sit. On most two-post configurations, the power unit has to mount to one of the columns so its cables and hoses can reach — there’s no getting around that with rubber isolation or creative routing, the hydraulic lines simply need to reach the cylinders. That decision also affects where the control switch lives, which is usually the front driver’s side or rear passenger side column depending on shop preference and door-swing patterns. None of this is complicated, but it does need to be planned before conduit gets run or concrete gets patched.
Drainage, Drips, and Protecting a Restoration Floor
Restoration and metal work bays tend to have cleaner floors than a general repair shop — no oil changes happening under the lift, less daily fluid traffic — but that doesn’t mean the site survey skips this step. We look at whether the bay has a floor drain nearby, how the slab is pitched, and whether a rust-repair project dripping degreaser or a media-blasting setup nearby could create a slip hazard around the auto lift’s base plates. For shops running fabrication work in the same building, we also flag dust and metal shavings, which can work into base plate hardware over time if the bay isn’t swept regularly.
We’ll sometimes recommend rubber or coated base plate covers to protect a coated or epoxy floor from chipping, especially in shops that take pride in a showroom-clean bay. There’s no factory rubber pad standard on most column bottoms, so this is an add-on conversation, not an assumption. It’s a small detail, but for a family shop that’s kept its floor looking sharp for decades, it matters.
Freight, Forklift Access, and Delivery Day Logistics
The auto lift itself is heavy — crated two-post units commonly run into the thousands of pounds — and getting it off the truck matters as much as the concrete underneath it. During the survey we always ask whether the shop has a forklift on site or whether we need to arrange lift-gate delivery and a pallet jack plan. Rural shops around Marion and similar communities sometimes have gravel or uneven approach areas that make standard freight delivery harder than a shop right off a highway exit, so we plan around that too.
We also talk through the bay door dimensions the crate needs to clear, and whether the install crew needs to bring the unit in disassembled versus rolling it through in one piece. For a family garage where the bay might also be storing a partially disassembled restoration project the week the lift arrives, we coordinate timing so nothing’s in the way. Getting this wrong on delivery day means paying a crew to stand around, which nobody wants.
What a Completed Survey Gets a Restoration Shop
By the time we finish a site survey, a family shop has a real answer to the question they called us with — not a guess. They know whether their existing slab works, what needs to change if it doesn’t, what the electrical situation requires, and exactly which auto lift model fits their bay dimensions and their typical vehicle mix. For shops doing restoration and metal work, that last part matters more than most people expect, because the wrong arm reach or column spacing turns a great lift into a daily frustration.
We also use the survey to set expectations on install day itself — how long it’ll take, what needs to be cleared out of the bay, and whether any concrete work needs to cure before the auto lift can be loaded. For a third-generation shop that’s planning to run this equipment for the next twenty or thirty years, that upfront diligence is what makes the investment pay off instead of becoming a headache six months in.
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