How Do I Prepare My Site for a Metal Building?

Good site prep means a level, compacted, well-drained pad a bit larger than the building, ground that sheds water away on every side, and a route a delivery truck can use. It makes install day smoother.

Key takeaways

• Drainage first: water must run away from the building on all sides.
• The pad should extend beyond the building footprint and be compacted in layers.
• Cut and fill carefully on slopes; fill must be compacted, not just pushed.
• Plan the driveway and turning room before you place the building.
• Locate utilities, septic and easements before any dirt moves.

Step 1: How do you choose the spot?

Before grading, confirm the site works legally and practically: setbacks, easements, well and septic clearances, HOA rules, and where power and water will come from. See where can I put a building on my land? and getting utilities to a detached building. Then think about:

• Water. Where do snowmelt and rain go today? Don't put the building in their path.
• Wind. Face roll-up doors away from the prevailing wind if you can.
• Sun and snow slide. North-facing eaves hold snow into spring, and doors under an eave can get buried by snow sliding off the roof.
• Access. A delivery truck carrying long steel members and panels needs a way in and a place to turn.

Step 2: How do you clear and strip the site?

Remove vegetation, roots and the topsoil layer across the pad area. Topsoil compresses and holds water; it isn't a base. Stockpile it for final landscaping.

Step 3: How should the site be graded and drained?

• Set the finished pad high enough above the surrounding ground that water always runs away.
• Slope the ground away from the building on all sides.
• Cut swales or add culverts to move water around the site, not through it.
• On the eastern plains and in the Arkansas Valley, think about irrigation runoff and neighbors' drainage, not just rain.

Step 4: How do you build the pad?

• Extend the pad a few feet beyond the building footprint on every side, and more where doors and driveways meet the building.
• Bring in road base or structural fill in thin layers, compacting each one.
• Give the pad surface a very slight slope so it doesn't puddle before the building goes up.
• On soft soils or soils that shrink and swell, a soils report and a heavier engineered base may be worth the cost.

Step 5: What about access and staging?

The manufacturer's install crew needs room to work, and the delivery truck needs room to unload. See how much room does a crew need on my property?. A firm, all-weather driveway to the pad matters most in spring, when everything else is mud.

Step 6: How do you mark utilities?

Call 811 for public utility locates before any digging. Mark your own private lines too: the run from the meter to the house, septic lines and irrigation. Show the well and septic on your site plan.

What about slopes, rock and high elevation?

Building on a hillside, into rock or in high country each changes the approach. See can you build on a slope or at high elevation?. In short: cut into the hill rather than filling out from it where you can, expect rock in the foothills, and plan around the season.

Who does what?

Many owners with a tractor or skid steer do their own clearing and rough grading. The pad requirements, including elevation, size and base, should match your building's foundation plan, so confirm them with us before you start. Close to home in the Penrose and Fremont County area, Rocky Mountain Metal can coordinate the project start to finish, including site work. Farther away, we supply and oversee the building itself, and we'll make sure your excavator knows what the pad needs.

What do we look at during the site visit?

At the site visit we look at where water goes, where the truck goes, where the doors will face, what the soil looks like, how far it is to power, and where the property lines and easements are. That visit is the first step toward your free quote anywhere in our service area.

Frequently asked questions

How level does the pad need to be?

Level across the footprint, with only a very slight fall for drainage until the building is up. The foundation has to match the building's anchor plan, so we'll walk you through the target before work starts.

Can I build on fill?

Only on properly compacted structural fill placed in layers. Loose or organic fill settles, which cracks slabs and throws doors out of alignment.

What about a septic leach field nearby?

You can't build over or drive on a leach field, and health rules set minimum separations. Locate it before you site the building.

Do I need a soils report?

Not always. On clay soils, questionable fill, or larger buildings with heavy slabs, it's inexpensive insurance. We'll tell you if your site might warrant one.