We often get many of the same questions asked over and over again, so we thought this would be a good place to have as a reference for the most commonly asked questions.
We use 3/4″ round rock. Due to the gradation of the rock, some of the stones are as small as 1/4″.
One of our trucks is equipped with a wheelbarrow.
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.
We recommend at least 4 inches on driveways, patios, sidewalks, and most slabs that we pour.
It depends on the application, but usually for driveways or other heavy-use areas, yes, using rebar and/or mesh helps to reduce cracking.
We highly recommend a sturdy gravel base. A base that is compacted and 2-3 inches deep is best.
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.
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 |
One cubic yard will fill about 10-12 pier blocks.
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 finish concrete work.
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.
Again, here are some guidelines:
| 2500 PSI | 3% – 4% |
| 3500 PSI | 4.5% – 5.5% |
| 4500 PSI | 5% – 5.5% |
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 |
To best protect your newly poured concrete, keeping it covered with hay or straw for two weeks should help.
It takes about 10-12 wheelbarrow full of concrete to make up a cubic yard.
One yard weights approximately 3,800 lbs. (nearly two tons).
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.
Your pour can be five (5) feet high without a chute. With all chutes on, your pour can be 2 1/2 feet high.
