wikiHow is a “wiki,” similar to Wikipedia, which means that many of our articles are co-written by multiple authors. This Psi concrete used in wild damp construction. If I were pouring big yardage jobs that would play a part in my decision on who I use that day. Looking for opinions. "I want to enlarge my living room by taking up some of my porch space. (#'s are rounded off).25 MPa concrete is equivalent to a 3500 psi concrete mix. You can see how much water was added to the load of concrete when the concrete was batched, by looking at the ticket.The concrete ticket below shows a 3500 psi concrete mix for 10.5 yards of concrete. For instance a 3500# blend of basic portland cement, with sand and a 3/4 " granit agregate will be used for a different application than the similar mixture using 1 1/4" agregate. or more.For a complete list of extra charges, check out my page on The easiest way to determine how many yards of concrete you'll need is to use one of my I have calculators you can use to figure the yardage for floors, walls, slabs, cylinders, footings, and even for filling block walls.If you've got a really small project and are thinking of buying 80lb bags of Quikrete or Sakrete and mixing them yourself, it'll take 45 of them to equal a yard of concrete.A cubic yard of concrete weighs about 3600 pounds.

Suspended slabs, beams, and girders (as often found in bridges) require 3,500 to 5,000 psi.

Pavement and floor slabs in homes and business are made of concrete at 4,000 PSI and able to withstand traffic and support heavy loads. "Excellent for the do it yourself-er, weekend warrior type."

Per Square Meter - Depth (m), eg 0.125 meters deep = 0.125 m3 per square meter (m2) (for 120 m2 area at 0.125 m3 per m2 requires 15m3 of concrete).

So far, this site has been very helpful." The materials used in the blends serve many different purposes.

A cubic yard of concrete, whether it's 3000 psi or 4000 psi, weighs about 4000 pounds (when you include the weight of water).But, there's 511 pounds of cement used to make 1 yard of 3000 psi concrete and there's 624 pounds of cement used to make 1 yard of 4000 psi concrete.The ratio of cement to stone stays about the same but the ratio of cement to sand goes down with less sand being used as the strength of the concrete goes up.In simple terms, MORE CEMENT PER YARD = HIGHER PSI CONCRETEThe same is true for 20MPa concrete VS 30MPa concrete.I can't speak for everyone, but I can tell you what I use it for.Sometimes we'll substitute 3500 psi concrete for these applications but mostly use 3000 .In Maine, I use 4000 psi concrete for all my exterior projects and some interior floors. According to guidelines published by AsktheBuilder.com, a home foundation requires a thicker pour of 8-10 inches and a psi of 3,500-4,000. I wanted to understand the differences.

I own Day's Concrete Floors, Inc. My company pours concrete almost every day of the work week. A front discharge truck and a rear discharge truck.The front discharge truck can hold up to 15 yards of concrete and the rear discharge truck can hold 11 yards.The amounts will vary slightly depending on the manufacturer of the truck, but these amounts are generally the maximum capacity they can carry at one time.In Maine, because of weight restrictions on our paved roads, the maximum amount of concrete a front or rear discharge truck can deliver to our jobs is 10.5 yards per truck.For example, when I have a small job and order a truck with 5 yards or less from Auburn Concrete, they just charge me for what I order. It has more cement per yard than a 3000 mix which helps it set-up faster.Take a look at my invoices to see what I get charged for 3500 psi concrete.If you look closely at the invoices, you'll see I get charged $105.00 per yard for 3500 psi 3/4 aggregate mix and $114.50 for 3500 psi 3/8 aggregate mix.The smaller 3/8 aggregate mixes are always more $ per yard than the 3/4 aggregate mixes. 4.)

What causes a concrete driveway to develop hairline cracks during winter in the US midwest? In fact it is only allowed in the mildest exposure classification in Australia.

"I want to enlarge my living room by taking up some of my porch space. I use 3500 psi concrete mixes for garage slabs that are used for heavier vehicles than your standard car or pickup truck.

I'm reading everything I can before starting this project. told me 500psi and another said it doesn't exist.