FAQ

Clearing Up Your Concrete Doubts in Eugene, Springfield, OR

Concrete Questions? We're Here to Help.

  • What size rock do you use?

    We use 3/4″ round rock. Due to the gradation of the rock, some of the stones are as small as 1/4″.

  • Do you provide wheelbarrows?

    We do not carry wheelbarrows on the truck! Sorry! =(

  • How long does it take for the concrete to set up?

    It depends on several different factors, but normally you can walk on it CAREFULLY (No twisting!) in about 12 hours. After 48 hours, you can remove the forms, but it's better to leave them on for a whole week if possible. In 2 weeks, you can park a car on your concrete. After 28 days, the concrete reaches its full strength.

  • How thick should my concrete be?

    We recommend at least 4 inches on driveways, patios, sidewalks, and most slabs that we pour.

  • Do I need to use rebar or fiber mesh?

    It depends on the application, but usually, for driveways or other heavy-use areas, yes, using rebar and/or mesh helps to reduce cracking.

  • If so, how deep?

    We highly recommend a sturdy gravel base. A base that is compacted and 2-3 inches deep is best.

  • What tools do I need? Where can I get them?

    You should have at least a bull float edger and hand trowel. You can buy these tools at any of the building supply stores, or you can rent them at most rental shops.

  • What strength of concrete should I pour?

    Here are some guidelines:

    Footings and Foundations 3000-3500 PSI

    Sidewalks 3000 PSI

    City Sidewalks 3500 PSI

    Hot Tub Pads 3500 PSI

    Driveways 3500 PSI

    Patios 3000 PSI

    Shops 3500-4000 PSI

    Garages 3500 PSI

    Fence Posts 2500 PSI

  • How many pier blocks does 1 yard fill?

    One cubic yard will fill about 10-12 pier blocks.

  • Do you finish the concrete work?

    No, we are primarily a supply and delivery company, but we do have a sister company that can help you. Natco Development, LLC specializes in finishing concrete work.

  • What does "air entrapment" do?

    Air entrapment means the induction of very small air bubbles into fresh concrete. When the concrete hardens, the air bubbles form small voids, and these voids give concrete additional durability in freezing or thawing conditions.

  • How much air is in your concrete?

    Again, here are some guidelines:

    2500 PSI 3% – 4%

    3500 PSI 4.5% – 5.5%

    4500 PSI 5% – 5.5%


  • How many yards does it take to fill an underground tank?

    Here are some approximate values for underground tanks:

    1,000 gallons, 5-6 yards

    675 gallons, 3 – 4 yards

    500 gallons, 2.5 – 3 yards


  • It's likely to freeze. What should I do?

    To best protect your newly poured concrete, keeping it covered with hay or straw for two weeks should help.

  • How many wheelbarrows do I need for 1 yard?

    It takes about 10-12 wheelbarrows full of concrete to make up a cubic yard.

  • How much does a cubic yard weigh?

    One yard weighs approximately 3,800 lbs. (nearly two tons).

  • How many yards does it take to fill cement blocks?

    It takes one (1) cubic yard of concrete to fill eighty (80) 8-inch blocks. One cubic yard will also fill fifty (50) 12-inch blocks.

  • How high can our chute be without clogging?

    Your pour can be five (5) feet high without a chute. With all chutes on, your pour can be 2 1/2 feet high.

Do you have more questions about our concrete delivery services or need specific information? We're here to help! Feel free to get in touch with us at 541-686-3031, and our knowledgeable team will provide you with the answers and guidance you need.

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