- What is the best base for concrete slab?
- How much is a 24×24 concrete slab?
- How many inches of gravel do you need for a concrete slab?
- What can be used instead of concrete?
- How do you estimate a concrete slab?
- Can I pour my own concrete slab?
- How many bags of concrete do I need for a 10×20 slab?
- Is gravel needed under concrete?
- How many 80lb bags of concrete make a yard?
- Is it cheaper to pour your own concrete?
- How much does 2 yards of concrete cost?
- Do you need rebar for 4 inch slab?
- How much is a bag of concrete at Home Depot?
- How thick should my concrete slab be?
- How much does it cost to pour a 20×20 concrete slab?
- What is the difference between a concrete slab and a cement slab?
- Is quikrete as good as concrete?
- How long should concrete cure before removing forms?
What is the best base for concrete slab?
The base course material, according to ACI 302, “Concrete Floor and Slab Construction,” should be “compactible, easy to trim, granular fill that will remain stable and support construction traffic.” ACI 302 recommends material with 10 to 30% fines (passing the No.
100 sieve) with no clay, silt, or organic materials..
How much is a 24×24 concrete slab?
A typical 24×24 garage slab costs between $3,057 and $5,944 with prices ranging from $5.31 to $8.31 per square foot for a 4” reinforced slab of concrete, and $6.83 to $10.32 per square foot for a 6” slab of reinforced concrete.
How many inches of gravel do you need for a concrete slab?
Excavate the slab area to a depth of about 7 inches, allowing 3 inches for a gravel base and 4 inches for concrete.
What can be used instead of concrete?
Concrete: Cement SubstitutesPulverised Fuel Ash (PFA), aka ‘Fly ash’ as a cement substitute. PFA is a by-product of coal-burning power stations. … Ground Granulated Blast-furnace Slag (GGBS) as a cement substitute. GGBS is a by-product of the iron and steel industry. … Silica fume. … Limestone fines. … Alternative fuels.
How do you estimate a concrete slab?
How to calculate concrete:Determine how thick you want the concrete.Measure the length and width that you’d like to cover.Multiply the length by the width to determine square footage.Convert the thickness from inches to feet.Multiply the thickness in feet by the square footage to determine cubic feet.More items…•
Can I pour my own concrete slab?
For most do-it-yourselfers, the best material for building a concrete slab is ready-mix crack-resistant concrete mix. The wet mix is poured into a prepared wood form, then left to cure. After the concrete has hardened, the sides of the form are knocked off and the slab is ready to use.
How many bags of concrete do I need for a 10×20 slab?
For a 10 x 10 slab, you would need 77 60-pound bags or 60 80-pound bags. If we add an extra 10%, that’s an extra 8 60-pound bags or 6 80-pound bags.
Is gravel needed under concrete?
Whether you pour concrete for a walkway or patio, a strong gravel base is required to prevent the concrete from cracking and shifting. Gravel is especially important in clay soil because it doesn’t drain well, which results in water pooling under the concrete slab and slowly eroding the soil as it finally drains.
How many 80lb bags of concrete make a yard?
If you have concrete delivered it issold by the yard (which is a cubic yard = 27 cubicfeet). Similarly, how many 80lb bags of concrete are on a pallet? SAKRETE 80LB CONCRETE MIX 42 BAGS PERSKID.
Is it cheaper to pour your own concrete?
One of the least expensive ways to get concrete is to mix your own. You can buy bags of the mix from a home improvement store. Typically, you only have to add water for it to be ready to pour. … Otherwise, you risk getting a weaker concrete once it cures, which could lead to cracks or crumbles within a couple of years.
How much does 2 yards of concrete cost?
According to the NRMCA – Ready Mixed Concrete Industry Data Survey, the average cost of concrete in 2018 was $120 per cubic yard, or $240 for the 2 cubic yards needed for a typical 10-by-10-foot patio….Bulk Concrete Prices.Cubic YardsPrice Range1*$140-$2002*$280-$4003*$420-$6004*$560-$8005 more rows
Do you need rebar for 4 inch slab?
No, you do not need rebar for a 4-inch slab of concrete on grade. A 4-inch-thick slab cast on the ground and in permanent contact with it will float and rebar is not required. Rebar is recommended on concrete measuring 5 – 6 inches thick.
How much is a bag of concrete at Home Depot?
Compare Similar Productscurrent productQuikreteSAKRETEQuikrete80 lb. Concrete Mix80 lb. Gray Concrete Mix50 lb. Fast-Setting Concrete Mix$410 Buy 42 or more $3.49$525 Buy 56 or more $4.73(3609)(1387)(1489)6 more rows
How thick should my concrete slab be?
4 inchesStandard concrete floor slab thickness in residential construction is 4 inches. Five to six inches is recommended if the concrete will receive occasional heavy loads, such as motor homes or garbage trucks. To prepare the base, cut the ground level to the proper depth to allow for the slab thickness.
How much does it cost to pour a 20×20 concrete slab?
Concrete Slab Cost CalculatorSize (in feet)Approximate Cost12x20$1,44020×20$2,40024×24$3,46020×30$3,60010 more rows
What is the difference between a concrete slab and a cement slab?
What is the difference between cement and concrete? Although the terms cement and concrete often are used interchangeably, cement is actually an ingredient of concrete. Concrete is a mixture of aggregates and paste. The aggregates are sand and gravel or crushed stone; the paste is water and portland cement.
Is quikrete as good as concrete?
Quikrete Fast-Setting Concrete Mix is easy to use — just add water — and it sets in 20 to 40 minutes. It’s the most efficient option for setting posts for things like mailboxes, fences and lamps. … That’s stronger than the concrete used for foundations on most homes.
How long should concrete cure before removing forms?
two daysRemoving forms before the concrete is truly dry. The forms or “molding” that holds the concrete in place until it dries should be left alone for at least two days to ensure that the concrete is completely dry.