The base cost of material for a 30×50 concrete slab is between $2.83 and $5.47 per square foot. The total cost may range from $4,245 to $8,205. However, hiring a contractor may cost between $6 and $8 per square foot, bringing the price range to $9,000 to $12,000. The biggest cost is the material.Cost of Concrete Stamping & Coloring Application in Texas. $9.92 per square foot (stamping; simple design) (Range: $9.46 - $10.37) Free Estimates from Local Pros. Cost of Concrete Sawing, Demolition or Removal in Texas. $4.14 per square foot (for demolition and removal of 4" slab) (Range: $3.32 - $4.96)30x30 concrete slab cost: $9,000 to $15,400. 30x40 concrete slab cost: $12,000 to $20,500. 40x60 concrete slab cost: $24,000 to $41,100. Concrete demolition cost (to remove an existing slab): Concrete demolition cost ranges from $1.30 to $2.00 per square foot. If you have an existing concrete slab, the demolition cost will have to be added to ...30x30 concrete slab cost: $9,400 to $16,000. 30x40 concrete slab cost: $12,500 to $21,400. 40x60 concrete slab cost: $25,000 to $42,800. Concrete demolition cost (to remove an existing slab): Concrete demolition cost ranges from $1.30 to $2.10 per square foot. If you have an existing concrete slab, the demolition cost will have to be …Cost of Concrete Stamping & Coloring Application in Alabama. $9.98 per square foot (stamping; simple design) (Range: $9.52 - $10.44) Free Estimates from Local Pros. Cost of Concrete Sawing, Demolition or Removal in Alabama. $4.17 per square foot (for demolition and removal of 4" slab) (Range: $3.35 - $4.99)Drag a straight 2×4 (screed board) across the top of the concrete forms to level and begin to finish the concrete surface. Make multiple passes if needed to create a flat, evenly filled area. Have a helper add or remove concrete in front of the screed as you pull it. Family Handyman. Step 11.The cost of sealing a concrete slab is typically around 5% to 10% of the total project cost. Texturing. Texturing the surface of the concrete can provide additional traction and visual interest. The cost of texturing can range from 5% to 15% of the total cost.30x30 concrete slab cost: $9,900 to $17,000. 30x40 concrete slab cost: $13,200 to $22,600. 40x60 concrete slab cost: $26,400 to $45,300. Concrete demolition cost (to remove an existing slab): Concrete demolition cost ranges from $1.40 to $2.20 per square foot. If you have an existing concrete slab, the demolition cost will have to be added to ...Everything you need to know about concrete costs and prices in Tennessee. ... (4 inch reinforced concrete slab) (Range: $3.98 - $5.08) Free Estimates from Local Pros. Cost of Concrete Driveway & Floor Repair in Tennessee. $82.50 per hour (plus materials) (Range: $65.00 - $100.00)This guide will go over the costs associated with installing one, including the cost of concrete, labor, and extra materials. In most cases, the average cost of a 20×30 concrete slab is $2,400-$5,400, including all materials and labor. However, costs can go to over $6,000 depending on where you are and the cost of materials and labor.May 26, 2022 · 3x3 concrete slab cost: $120 to $210 (includes a minimum charge). 5x5 concrete slab cost: $300 to $400. 10x10 concrete slab cost: $1,000 to $1,800. 20x20 concrete slab cost: $4,100 to $7,100. 20x30 concrete slab cost: $6,200 to $10,600. 30x30 concrete slab cost: $9,300 to $15,900. 30x40 concrete slab cost: $12,400 to $21,200.20x20 concrete slab cost: $4,100 to $7,100. 20x30 concrete slab cost: $6,200 to $10,600. 30x30 concrete slab cost: $9,300 to $15,900. 30x40 concrete slab cost: $12,400 to $21,200. 40x60 concrete slab cost: $24,700 to $42,400. Concrete demolition cost (to remove an existing slab): Concrete demolition cost ranges from $1.30 to $2.10 per square ...30x30 concrete slab cost: $8,500 to $14,600. 30x40 concrete slab cost: $11,300 to $19,400. 40x60 concrete slab cost: $22,700 to $38,800. Concrete demolition cost (to remove an existing slab): Concrete demolition cost ranges from $1.20 to $1.90 per square foot. If you have an existing concrete slab, the demolition cost will have to be added to ...30x30 concrete slab cost: $10,900 to $18,600. 30x40 concrete slab cost: $14,500 to $24,800. 40x60 concrete slab cost: $29,000 to $49,600. Concrete demolition cost (to remove an existing slab): Concrete demolition cost ranges from $1.50 to $2.50 per square foot. If you have an existing concrete slab, the demolition cost will have to be added to ...The average cost to build a garage is $35 to $60 per square foot. The cost to build a 1-car garage is between $7,500 to $14,200, a 2-car garage costs $19,600 and $28,200, and a 3-car garage ranges from $28,200 to $42,700. Get free estimates for your project or view our cost guide below: Get free estimates.Because reinforced concrete slabs, blocks, driveways, and buildings will last much, much longer. Rebar sizes For the imperial-unit countries, bar sizes give the diameter in units of the ⅛ inch for bar sizes #2 through #8.Concrete slab cost in Wasilla, AK is minor when compared to the convenience it brings. Homeowners have a slab of concrete laid down so they have a sturdy surface to drive or park on. The cost of 30x30 concrete slab is a true investment that homeowners feel pays out over a short period of time.Concrete slab cost in Sacramento, CA is minor when compared to the convenience it brings. Homeowners have a slab of concrete laid down so they have a sturdy surface to drive or park on. The cost of 30x30 concrete slab is a true investment that homeowners feel pays out over a short period of time.On average, a 4-inch thick slab can cost around $2.83 per square foot, while a 6-inch thick slab may cost approximately $3.57 per square foot. Therefore, opting for a thicker slab will result in higher material costs. Site Preparation. Site preparation work is another crucial aspect that affects the cost of a 30×30 concrete slab. This includes ...30x30 concrete slab cost: $9,300 to $15,900. 30x40 concrete slab cost: $12,400 to $21,200. 40x60 concrete slab cost: $24,700 to $42,400. Concrete demolition cost (to remove an existing slab): Concrete demolition cost ranges from $1.30 to $2.10 per square foot. If you have an existing concrete slab, the demolition cost will have to be added to ...Today i'm showing you a time lapse of me pouring a huge concrete slab using bagged concrete. The pad was 46 x 26. By doing everything myself (hauling / sprea...Cost of Concrete Slab Leveling or Mudjacking in Delaware. $5.16 per square foot (of slab being raised) (Range: $4.64 - $5.68) Free Estimates from Local Pros. Cost of Concrete Floor Coating Application in Delaware. $4.25 per …30x30 concrete slab cost: $10,600 to $18,200. 30x40 concrete slab cost: $14,100 to $24,200. 40x60 concrete slab cost: $28,200 to $48,400. Concrete demolition cost (to remove an existing slab): Concrete demolition cost ranges from $1.50 to $2.40 per square foot. If you have an existing concrete slab, the demolition cost will have to be added to ...More excavation, materials, and labor are involved, so they carry a higher price tag than a monolithic concrete slab. Pier and Beam Foundation Also known as post and pier foundations, pier and beam concrete foundations cost an average of $8,000 to $15,000, or about $6 to $12 per square foot, with a steel l-beam cost at the higher end …Cost of Concrete Slab Leveling or Mudjacking in Wisconsin. $4.87 per square foot (of slab being raised) (Range: $4.37 - $5.36) Free Estimates from Local Pros. Cost of Concrete Floor Coating Application in Wisconsin. $4.01 per square foot (solid based epoxy) (Range: $3.14 - $4.88) Free Estimates from Local Pros.Cost of Concrete Slab Leveling or Mudjacking in Ohio. $4.72 per square foot (of slab being raised) (Range: $4.24 - $5.19) Free Estimates from Local Pros. Cost of Concrete Floor Coating Application in Ohio. $3.90 per square foot (solid based epoxy) (Range: $3.05 - …Materials and supply Aiken sales taxes. Any general contractor fees, if used for the project. Such fees generally add another $118.92-$148.65 to the total. A concrete slab calculator in Aiken helps you determine the cost of a project right away. It allows you to account for the expense in your household budget with greater ease.Our precast concrete floor panels are an increasingly popular choice for engineers, builders and contractors overseeing a wide variety of projects. NiCore™ precast concrete floors and ceilings offer superior durability and natural sound attenuation that contributes to an overall safer and quieter living or work environment. NiCore hollow core ...Marshalls Limestone Textured Blue Multi Paving Slab - 600 x 300 x 22mm - Pack of 72. (0) £610. £44.46 per m 2. Marshalls Indian Sandstone Riven Grey Multi Paving Slab - 600 x 300 x 22mm - Pack of 72. (2) £710. £51.75 per m 2. Marshalls Firedstone Mixed Size Dusk Paving Slab - 5m2.Costs may be lower or higher depending on the size of the slab. All costs have been calculated at a rate of $6 per square foot. Concrete Slab Installation Cost Estimate. Average Cost (24×24 ...Learn More ›. Highlights. Basic concrete resurfacing costs $3 to $9 per square foot, with most homeowners spending $6 per square foot or up to $20 per square foot for decorative overlays. The ...30x30 concrete slab cost: $9,300 to $15,900. 30x40 concrete slab cost: $12,300 to $21,100. 40x60 concrete slab cost: $24,700 to $42,300. Concrete demolition cost (to remove an existing slab): Concrete demolition cost ranges from $1.30 to $2.10 per square foot. If you have an existing concrete slab, the demolition cost will have to be …Cost of Concrete Sawing, Demolition or Removal in Atlanta, Georgia. $4.30 per square foot (for demolition and removal of 4" slab) (Range: $3.45 - $5.14) Free Estimates from Local Pros. Cost of Concrete Block Wall Installation in Atlanta, Georgia. $8.13 per square foot (Range: $7.24 - $9.01) Free Estimates from Local Pros.Slab Installation. OR CALL US DIRECTLY 1-888-668-8262. Concrete slab cost in Kissimmee, FL is minor when compared to the convenience it brings. Homeowners have a slab of concrete laid down so they have a sturdy surface to drive or park on. The cost of 30x30 concrete slab is a true investment that homeowners feel pays out over a short period of ...OR CALL US DIRECTLY 1-888-668-8262. Concrete slab cost in Tacoma, WA is minor when compared to the convenience it brings. Homeowners have a slab of concrete laid down so they have a sturdy surface to drive or park on. The cost of 30x30 concrete slab is a true investment that homeowners feel pays out over a short period of time.Cost Range. The cost range to have a slab foundation installed is fairly wide at $6,280 – $21,000. There are many factors that go into this range, which are outlined in detail below. The average slab foundation cost is $9,750 or about $7.80 per square foot. This price includes everything from excavating the foundation to finishing the concrete.As mentioned above, expect to spend an average of $6.60 (a range of $4 to $8 per square foot) for a 24×30-square-foot concrete slab. Do the math and that brings the total average cost to around $4,700. That stated, taking into consideration factors listed above, the total job could run you between $3,000 and $5,700, once concrete type ...30x30 concrete slab cost: $9,500 to $16,200. 30x40 concrete slab cost: $12,600 to $21,600. 40x60 concrete slab cost: $25,200 to $43,300. Concrete demolition cost (to remove an existing slab): Concrete demolition cost ranges from $1.30 to $2.10 per square foot. If you have an existing concrete slab, the demolition cost will have to be added to ...30x30 concrete slab cost: $8,700 to $15,000. 30x40 concrete slab cost: $11,700 to $20,000. 40x60 concrete slab cost: $23,300 to $40,000. Concrete demolition cost (to remove an existing slab): Concrete demolition cost ranges from $1.20 to $2.00 per square foot. If you have an existing concrete slab, the demolition cost will have to be …30x30 concrete slab cost: $9,500 to $16,200. 30x40 concrete slab cost: $12,600 to $21,600. 40x60 concrete slab cost: $25,200 to $43,300. Concrete demolition cost (to remove an existing slab): Concrete demolition cost ranges from $1.30 to $2.10 per square foot. If you have an existing concrete slab, the demolition cost will have to be …If the 30×30 concrete slab is textured or concrete, the price will go up by four dollars per foot. Cost Calculator. Below is an estimated calculation of the costs for a 30×30 concrete slab using an average cost of $6.88, $10.47, and $14.61. The difference in cost range depicts the quality of materials and job.How much would it cost to pour a 30x30 concrete slab? A 30 by 30 foot concrete slab ends up being just under 84 square metres. With concrete generally costing between $75 and $110 per sq/m, this ends up between $6,300 and $9,240.The cost of 30x30 concrete slab is a true investment that homeowners feel pays out over a short period of time. That is why they find a contractor who specializes in concrete to work with. ... As our numbers show in 2024 average cost that homeowners paid for concrete slab leveling in Dickson county is between $321.00 and $1,840.00.30x30 concrete slab cost: $8,500 to $14,500. 30x40 concrete slab cost: $11,300 to $19,300. 40x60 concrete slab cost: $22,500 to $38,600. Concrete demolition cost (to remove an existing slab): Concrete demolition cost ranges from $1.20 to $1.90 per square foot. If you have an existing concrete slab, the demolition cost will have to be added to ...Base cost for a 6" thick concrete slab -- $9.50 per square foot. Take the length of the concrete slab x the width of the slab to get the total square footage. Multiply the total square footage by 9 (dollars) to get the total price. L x W x $9.50 in this example. A 32' x 24' x 6" thick concrete slab would cost $7296.00.24' x 24' x 4" = 7.1 yards of concrete. Round that up to 8 for excess. 8 yards x $200 per yard = $1600. $200 per yard includes taxes, additives, and unexpected expenses. Double the concrete cost for concrete misc. …A concrete slab foundation costs $4 to $25 per square foot. The total cost of a foundation for a garage ranges from $2,000 to $7,000. Roof. The roof of your garage will cost anywhere from $1,600 to $16,000 total, depending on its …30x30 concrete slab cost: $8,300 to $14,300. 30x40 concrete slab cost: $11,100 to $19,100. 40x60 concrete slab cost: $22,200 to $38,100. Concrete demolition cost (to remove an existing slab): Concrete demolition cost ranges from $1.20 to $1.90 per square foot. If you have an existing concrete slab, the demolition cost will have to be added to ...You may spend $8,000 on a 30×30 garage kit and need to consider slab costs, which will vary greatly depending on location and your terrain. Costs for a 30×30 steel building kit will fall between $8 and $20 per square foot or from $7,200 to $18,000 for the building. Turnkey solutions will often fall between these price ranges.30x30 concrete slab cost: $9,000 to $15,300. 30x40 concrete slab cost: $11,900 to $20,500. 40x60 concrete slab cost: $23,900 to $40,900. Concrete demolition cost (to remove an existing slab): Concrete demolition cost ranges from $1.30 to $2.00 per square foot. If you have an existing concrete slab, the demolition cost will have to be …The cost of a concrete slab with your metal building can cost anywhere from $4 to $8 per square foot, ranging from $3,600 to $7,2000 on top of the cost of the metal building. Those figures just include the basic building structures, however. If you want to add electricity, insulation, heating, and even plumbing to your 30×30 metal building ...30x30 concrete slab cost: $9,000 to $15,400. 30x40 concrete slab cost: $12,000 to $20,500. 40x60 concrete slab cost: $24,000 to $41,100. Concrete demolition cost (to remove an existing slab): Concrete demolition cost ranges from $1.30 to $2.00 per square foot. If you have an existing concrete slab, the demolition cost will have to be added to ...The cost of a concrete slab is extra, and can cost anywhere from $4 per square foot to over $10 per square foot. Approximate Base Cost of Common Building Sizes. Dimensions (ft) Cost Concrete Slab Area; 20×20 metal building: $5,000+ $3,500+ 400 sq. ft. 20×30 metal building: $6,500+ $5,000+ 600 sq. ft. 20×40 metal building:Based on this average cost, a 10x10 concrete slab will cost $821, a 20x20 concrete slab will cost $3,284, and a 30x30 concrete slab will cost $7,398. The cost of a concrete slab …30x30 concrete slab cost: $8,600 to $14,700. 30x40 concrete slab cost: $11,400 to $19,600. 40x60 concrete slab cost: $22,900 to $39,200. Concrete demolition cost (to remove an existing slab): Concrete demolition cost ranges from $1.20 to $1.90 per square foot. If you have an existing concrete slab, the demolition cost will have to be added to ...Pole Building Price Per Square Foot. An Itemized List: Total Price: $16,720.00 For. 30 x 48 x 10 pole building. 30 ft clear span trusses. 29 gauge metal roofing and siding with a 40 year metal finish warranty. Insulated vapor barrier in the roof. Flat wall girts. 1 - 3 x 6 solid core insulated smooth face fiberglass door with deadbolt and ...OR CALL US DIRECTLY 1-888-668-8262. Concrete slab cost in Tallahassee, FL is minor when compared to the convenience it brings. Homeowners have a slab of concrete laid down so they have a sturdy surface to drive or park on. The cost of 30x30 concrete slab is a true investment that homeowners feel pays out over a short period of time.30x30 concrete slab cost: $9,300 to $16,000. 30x40 concrete slab cost: $12,400 to $21,300. 40x60 concrete slab cost: $24,800 to $42,600. Concrete demolition cost (to remove an existing slab): Concrete demolition cost ranges from $1.30 to $2.10 per square foot. If you have an existing concrete slab, the demolition cost will have to be added to ...#PouringConcrete #GarageSlab #MikeDayConcreteIn this video I'm pouring a concrete slab for a new garage that's 50' x 40'.The garage slab has an attached carp...30x30 concrete slab cost: $9,500 to $16,200. 30x40 concrete slab cost: $12,600 to $21,600. 40x60 concrete slab cost: $25,200 to $43,300. Concrete demolition cost (to remove an existing slab): Concrete demolition cost ranges from $1.30 to $2.10 per square foot. If you have an existing concrete slab, the demolition cost will have to be added to ...30x30 concrete slab cost: $8,800 to $15,100. 30x40 concrete slab cost: $11,800 to $20,200. 40x60 concrete slab cost: $23,500 to $40,400. Concrete demolition cost (to remove an existing slab): Concrete demolition cost ranges from $1.30 to $2.00 per square foot. If you have an existing concrete slab, the demolition cost will have to be added to ...Standard Slabs: A standard 10m x 10m slab can cost between $7,500 to $11,000 . Garage and Shed Slabs: A single garage (3.6m x 6m) may cost $1,600 to $2,400, while a small shed (6m x 7m) could range from $3,100 to $4,600 . Average Cost Range: The average cost for a concrete slab in Australia spans from $60 to $110 per square metre .Conclusion: Typically for a 30x30x4 slab you'll need exactly 11.11 cubic yards, or 300 cubic feet, or either 500 x 80 lb bags, 667 × 60 lb bags, or 1,000 × 40 lb bags of concrete. It's a good idea to order a little extra to account for potential spillage and to ensure you have enough to complete the project.Key takeaways: 30×30 steel buildings offer versatile space for various applications. Concrete slabs, piers, and footings are common foundation options. Costs depend on …On average, a 4-inch thick slab can cost around $2.83 per square foot, while a 6-inch thick slab may cost approximately $3.57 per square foot. Therefore, opting for a thicker slab will result in higher material costs. Site Preparation. Site preparation work is another crucial aspect that affects the cost of a 30×30 concrete slab. This includes ...30x30 concrete slab cost: $8,500 to $14,600. 30x40 concrete slab cost: $11,300 to $19,500. 40x60 concrete slab cost: $22,700 to $38,900. Concrete demolition cost (to remove an existing slab): Concrete demolition cost ranges from $1.20 to $1.90 per square foot. If you have an existing concrete slab, the demolition cost will have to be added to ...How much would it cost to pour a 30x30 concrete slab? A 30 by 30 foot concrete slab ends up being just under 84 square metres. With concrete generally costing between $75 and $110 per sq/m, this ends up between $6,300 and $9,240.How much does a 30×40 concrete slab cost? The average cost is $4 to $8 per square foot. The median price is about $6 per square foot. Based on these averages, you may pay $4,800 to $9,600 with a median estimate of $7,200. However, many details influence the concrete slab costs.Cost of Concrete Sawing, Demolition or Removal in Atlanta, Georgia. $4.30 per square foot (for demolition and removal of 4" slab) (Range: $3.45 - $5.14) Free Estimates from Local Pros. Cost of Concrete Block Wall Installation in Atlanta, Georgia. $8.13 per square foot (Range: $7.24 - $9.01) Free Estimates from Local Pros.Find out the average cost of concrete slabs per square foot for different levels of quality and thickness. Use the concrete slab calculator to get up to date pricing for your area and zip code.30x30 concrete slab cost: $8,700 to $15,000. 30x40 concrete slab cost: $11,700 to $20,000. 40x60 concrete slab cost: $23,300 to $40,000. Concrete demolition cost (to remove an existing slab): Concrete demolition cost ranges from $1.20 to $2.00 per square foot. If you have an existing concrete slab, the demolition cost will have to be added to ...30x30 concrete slab cost: $7,400 to $12,800. 30x40 concrete slab cost: $9,900 to $17,000. 40x60 concrete slab cost: $19,900 to $34,000. Concrete demolition cost (to remove an existing slab): Concrete demolition cost ranges from $1.10 to $1.70 per square foot. If you have an existing concrete slab, the demolition cost will have to be added to ...A 40×80-foot (3,200 square foot) concrete slab may cost $12,800 to $25,600. The average price of a concrete slab is $4 to $8 per square foot. At $6 per square foot, a 3,2000 square foot slab may cost about $19,200. The estimated concrete slab costs vary depending on a variety of details. Let’s break down the costs of pouring a …Everything you need to know about concrete costs and prices in Arkansas. ... (4 inch reinforced concrete slab) (Range: $4.02 - $5.13) Free Estimates from Local Pros. Cost of Concrete Patio or Walkway Repair in Arkansas. $75.00 per hour (plus materials) (Range: $65.00 - $85.00)400 square feet RCC slab cost. In India, the average cost of constructing 400 square feet (sq ft) RCC slab (Reinforced Concrete Slab) is Rs 72,000 to 80,000. The typical approximate cost of an RCC slab is between 180 and 200 rupees per square foot, so a 400 square foot RCC slab will cost between 72,000 and 80,000 rupees including materials ...The cost of 30x30 concrete slab is a true investment that homeowners feel pays out over a short period of time. That is why they find a contractor who specializes in concrete to work with. ... As our numbers show in 2024 average cost that homeowners paid for concrete slab leveling in Brazoria county is between $309.00 and $1,773.00.Because of these factors, there is a wide range of costs associated with building a carport. The national average is $2,000 to $10,000, with most homeowners paying around $8,439 for an installed 18' x 18' x 8' galvanized steel carport on a 4" thick concrete slab with 2 walls. This project's low cost is $896 for a 12' x 12' wooden ...30x30 concrete slab cost: $9,300 to $15,900. 30x40 concrete slab cost: $12,300 to $21,100. 40x60 concrete slab cost: $24,700 to $42,300. Concrete demolition cost (to remove an existing slab): Concrete demolition cost ranges from $1.30 to $2.10 per square foot. If you have an existing concrete slab, the demolition cost will have to be …3x3 concrete slab cost: $110 to $190 (includes a minimum charge). 5x5 concrete slab cost: $200 to $400. 10x10 concrete slab cost: $900 to $1,600. 20x20 concrete slab cost: $3,700 to $6,300. 20x30 concrete slab cost: $5,500 to $9,400. 30x30 concrete slab cost: $8,200 to $14,100. 30x40 concrete slab cost: $10,900 to $18,800.Find out the average cost of concrete slabs per square foot for different levels of quality and thickness. Use the concrete slab calculator to get up to date pricing for your area and zip code.30×30 Metal Building with Slab Cost. A 30×30 building has 900 square feet of sp, How many concrete bags would I need for a 7 ft x 20 ft x 6" slab? 117 x 80lb Concre, May 26, 2022 · 20x20 concrete slab cost: $3,800 to $6,600. 20x30 concrete slab cost: $5,800 to $9,900. 30, The materials alone, calculated at the average $40 to $50 per square foot price, will total anywhere from $, You may spend $8,000 on a 30×30 garage kit and need to consider slab costs, which will vary greatly depending on l, While it may seem like a fairly simple structure, concre, 30x30 concrete slab cost: $9,100 to $15,600. 30x40 concrete slab cost: $12,100 to $20,800., 30x30 concrete slab cost: $8,500 to $14,600. 30x40 , With an average cost between $7.50 to $11 per square foot inst, 30x30 concrete slab cost: $8,300 to $14,300. 30x40 co, Ready-mixed concrete costs on average $108.22 per cub, Concrete slab cost in Spartanburg, SC is minor when compar, In this video, I will show you how to make a DIY conc, A 30×30 foot garage will require a foundation of at least 4 inche, You may spend $8,000 on a 30×30 garage kit and need to consider, 30x30 concrete slab cost: $8,900 to $15,300. 30x40 concrete slab c, Concrete volume estimate for 30×30 slab. Anothe, 30x30 concrete slab cost: $8,300 to $14,200. 30x40 con.