For example, concrete poured for a foundation will be thicker around its edges to hold up the walls. Slabs that are 6 inches are used for residential and commercial building foundations, while 8-inch slabs cost about $7 per square foot and are commonly used on concrete driveways that need to withstand the weight of heavy vehicles.Ĭreating thicker edges is also an option to provide reinforcement. At 4 inches thick, you’re looking at an average cost of $5.35 per square foot, while at 6 inches thick, you’re looking at $6.20 per square foot. The average concrete slab is between 4 and 6 inches thick. That being said, thicker slabs are stronger and more durable, meaning they’ll last longer. The thicker the concrete slab, the more you should expect to pay, as thicker slabs require more materials and labor. We’ll discuss prices for various concrete projects in a later section. In general, the labor cost to pour concrete is about $45 per hour, or around $2.50 per square foot. Each job requires specialized expertise and equipment, from demolition work to prep reinforcement to edging. Slab flatwork, or pouring the concrete, is messy and complicated work. Next, we’re going to look at the variables that can affect the cost of concrete slabs: Remember that while the concrete slab itself may not require a permit, you may need one for the overall project. For example, there may be thickness and reinforcement requirements that could affect the total price. When you calculate what you’ll need for your project, multiply the length of your project by the width to find the square footage, and add 10% to account for spills and other losses.Īs you begin planning, check with your local and state building codes as different projects can have different requirements. Resource CenterĬoncrete slabs usually cost between $4 and $8 per square foot. Find hiring guides, material costs, expert advice, how-to's and more.
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