Concrete Report: 27'x18'x6"

Answer

Estimated Concrete Volume
9 cubic yards
243 cubic feet

Estimated Weight of Concrete

16.16 tons

Covering 486 sq. ft. at 6" depth
Change dimensions

Optional 10% extra concrete
for waste allowance

10% = 0.9 cubic yards
Total Concrete with 10% = 9.9 cubic yards

Order Size

This order size is considered
Large

How Many Concrete Bags?*

53960lb Concrete bags
40480lb Concrete bags
121.5Small wheelbarrow loads
60.8Large wheelbarrow loads
*Approximation Estimate

Concrete Truck for 27'x18' x6"

90%
0.9 Concrete Truck Loads (10 cu/yd Capacity)

Cost Estimate for 27'x18' x6"

Purchasing ready-mix concrete is by far the easiest way to mix concrete for medium to large projects and can even be used on smaller projects as well. We have provided a cost comparison between ready mix and DIY concrete premix bags to give you a rough ballpark estimate.

Bag Cost Estimate

Pre-mixed concrete bags cost on average $3.50 per 80lb bag. Using pre-mixed bags to cover 486 sq ft at a depth of 6", the estimated cost is $1,414.00
$1,414.00
for 404 x 80lb bags

Truck Cost Estimate

Ready-mixed concrete costs on average $108.22 per cubic yard delivered. Using a concrete truck to cover 486 sq ft at a depth of 6", the estimated cost is $973.98

Concrete trucks may also charge a "short load" fee for partially filled loads. Short load fees are charged at about $17 for every yard not used on the truck.

So for a 10 cu/yd Truck Load - 9 cu/yd concrete = 1
1 x $17.00 = $17.00
$973.98 + $17.00 = $990.98
$990.98

Pros Do Everything*

$2,430.00$5.00 sq ft Low End**
$2,916.00$6.00 sq ft
$3,402.00$7.00 sq ft
$3,888.00$8.00 sq ft
$5,103.00$10.50 sq ft High End***

*6 inch pours and under.
**Cost assumes subbase and general prep is done.

Concrete Extras

A well-compacted subbase provides a strong foundation for concrete to lay on. We recommend you contact your nearest concrete supplier for their recommendations on whether you need a subbase, base depth, and rock type.

With a brief look, a 27x18 area at 6 inches deep, you would need approximately 12.78 tons or 9 cubic yards of gravel.

Concrete reinforcing is also recommended in high traffic areas and medium to large areas. Wire mesh on average costs $0.56 per sq ft and fiber mesh costs $0.13 per sq ft.

So for your 486 sq ft area, this may roughly cost $272.16 for wire mesh, $1,458.00 for thicker wire rebar mesh and $63.18 for fiber mesh.

*Reinforcing for 10 inch pours and under.
How to Calculate Concrete Amount for 27x18 x6"
27 * 18 = 486 sq ft
6 / 12 = 0.5 ft depth
486 * 0.5 = 243 cu ft
243 / 27 = 9
= 9 cu/yd
How to Calculate Concrete Weight
9 * 3590 = 32310 lbs
Density of concrete used 2130 kg/m3or 133 lbs/ft3.

27 ft x 18 ft x 6" Concrete Summary

How much concrete do I need for an area of 27 ft x 18 ft x 6" depth? 9 cu. yds.
How many concrete bags would I need for a 27 ft x 18 ft x 6" slab? 404 x 80lb Concrete bags.
How much does it cost to pour a 27'x18' x6" slab? Ready-mix costs approx $990.98.
How much does it cost to hire a contractor to concrete a 27'x18' x6" slab? A pro costs between $2,430.00 and $5,103.00.
How do you calculate concrete volume? Formula ((width x length) x (depth in inches / 12)) / 27 = total cubic yards. See our how to here

This Page is Calculated for the Following: 27 ft x 18 ft x 6", 27x18x6, 486 sq. ft., 27 x 18, 27x18, 27x18 x6", 27'x18'x6", 27'x18' x6"
This Concrete calculator can be used for a slab, floor, garage, block, wall, driveway, patio, countertop, footings, foundation, pool or basement, and most rectangular areas.
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