What gets checked before a concrete pour? On every SwagerBuilds foundation, seven things get verified before the truck is allowed to back in: forms square and to dimension, footings below frost line, rebar sized and spaced to the plan, rebar up on chairs, anchor bolts and hold-downs set, sleeves in for every utility, and the inspection signed off. The pour itself is the easy part. Everything that can go wrong with a foundation goes wrong before the concrete shows up, and once it is poured, it is permanent.
I am Bryce Swager. SwagerBuilds builds custom homes in Teton Valley and Eastern Idaho, and this is the list my site supervisor runs on every pour, in the order we run it. If you are watching your own foundation go in, this is what to look for.
Why is the pour not the risky part?
Because concrete does exactly what the forms and the steel tell it to do. A crooked form gives you a crooked wall. Rebar lying in the dirt gives you a wall with no steel where it matters. A missed sleeve means a plumber cutting through a finished foundation with a core drill three months later. None of those are concrete problems. They are preparation problems, and every one of them is cheap to fix the morning before the pour and expensive to fix after.
Most homeowners show up for pour day because it is the exciting part. The day that actually decides whether your foundation is right is the day before.
What are the 7 things checked before a concrete pour?
- Forms square and to dimension. We pull diagonals on every rectangle. If the two diagonals do not match, the forms are not square, and the framers inherit the error on every wall above. Dimensions get checked against the foundation plan, not the framing plan, because the two are not always drawn by the same person.
- Footings below the frost line. Frost depth in Teton County is 48 inches. In Jefferson and Bonneville County it is less, but the rule is the same: the bottom of the footing sits below the depth the ground freezes to. Footings above frost line heave when the ground freezes and settle when it thaws, and the house moves with them.
- Rebar sized and spaced to plan. The engineer’s drawings call out bar size and spacing. We count bars and tape the spacing. A crew that is short on #5 and substitutes #4 has made your foundation weaker, and nobody will ever see it.
- Rebar up on chairs, not in the dirt. Steel only works when it is inside the concrete. Rebar lying on the ground ends up at the bottom edge of the footing with no cover, where it rusts and does nothing. Chairs hold it at the height the engineer designed for.
- Anchor bolts and hold-downs set. These tie the framed house to the foundation. They have to land in the right spots relative to the wall layout and the shear panels. Set them wet after the pour and you get bolts in the wrong place, in the wrong orientation, or leaning. We set them before.
- Sleeves for every utility. Water, sewer, power, gas, radon, and anything low-voltage that crosses the foundation goes through a sleeve that is placed before the pour. Every sleeve we forget becomes a core drill through finished concrete later.
- Inspection signed off. The county inspects footings and foundation walls before concrete goes in. The signature on that inspection is the last gate. No signature, no truck.
What is not on this list that people expect?
The concrete mix, the slump test and the cylinder breaks. Those matter, and we do them, but they are checks on the truck, not on the site. The seven items above are the things a homeowner can see with their own eyes the day before the pour. If any of them is wrong, the mix does not matter.
Also not on the list: the weather. In Teton Valley we pour from spring through early fall, and every home is dried in before winter, roof, windows and doors. We do not pour foundations in winter. Why that rule beats a winter pour, and what a winter pour would take, is in can you pour concrete in winter in Idaho.
Can I check these myself?
Yes, and I would rather you did. Walk the forms the afternoon before the pour. Pull a tape on two diagonals. Look at whether the rebar is sitting on chairs or on dirt. Count the sleeves against the plumbing plan. Ask to see the inspection sticker. A builder who does not want you walking the forms the day before the pour is telling you something.
On a SwagerBuilds build you get a photo of each of these in your daily log before the truck is scheduled. You can check them from Texas.
What happens after the pour?
Concrete reaches most of its strength in 7 days and its design strength at 28. Forms come off in 1 to 3 days depending on weather. Waterproofing, drain tile and backfill follow, and framing usually starts about two weeks after the foundation walls are poured. The full list of inspections a custom home goes through starts here and runs to final.
Questions about the pour
How deep do footings need to be in Idaho?
Below the local frost line. Teton County requires 48 inches. Eastern Idaho valley-floor counties run 30 to 36 inches. Your engineer’s foundation plan states the number for your lot, and the county inspector checks it before concrete goes in.
What does a foundation cost on a custom home?
Foundation and framing together run 18 to 22 percent of construction cost on a typical Eastern Idaho build. The foundation share rises on a sloped lot, a walkout basement, or a Teton Valley lot where frost depth and snow load add concrete and steel. The full breakdown is in what a custom home costs in Idaho.
Who inspects the footings before the pour?
The county building department. In Teton County, Idaho that is the building department in Driggs. The inspector checks footing depth, width, rebar and forms, and signs off before the pour is scheduled. Your builder handles the scheduling. You do not need to be there.
Building in Teton Valley or Eastern Idaho?
Every SwagerBuilds foundation runs this list, photographed, before the truck is called. If you want a builder who shows you the checks instead of asking you to trust them, book a 15-minute planning call.