Backfill for Figure 3.1:
- Backfill volume = excavation volume – footing volume – wall volume.
- (Note that only the portion of the wall that is in the trench is deducted, so the height of wall in the trench is the average trench depth minus 2′-0” for the footing: 6′-0” – 2′-0” is 4′-0”)
- Backfill volume = 207.4 cubic yards.
In this post
How do you calculate trenches?
Calculate the volume of the trench by using this formula: Volume = Width x Length x Depth. As an example, a trench 12 feet long with an average width of 2.3 feet and an average depth of 5 feet has a volume equal to (12 x 2.3 x 5), or 138 cubic feet.
How do you figure cubic yards of backfill?
Length in feet x Width in feet x Depth in feet (inches divided by 12). Take the total and divide by 27 (the amount of cubic feet in a yard). The final figure will be the estimated amount of cubic yards required.
How do you calculate cubic yards in a trench?
The formula: Number of Cubic Yards = Length (in feet) Width (in feet) Depth (in feet) ÷ 27. Simply multiply the three dimensions together to find the number of cubic feet, then divide by 27 to find the number of cubic yards.
How much rock do I need to fill a trench?
Determine the depth of the excavation. Let’s say it’s d = 2 yd . Multiply the area and depth of the excavation to obtain its volume in cubic yards: 18 * 2 = 36 yd³ . The volume of gravel required is equal to the volume of excavation.
How do you calculate excavation and backfill costs?
The cost of excavation is generally estimated by multiplying the total excavation volume to the excavation price per unit. For ex : Let us assume that you want to excavate a pit of size : 2 x 2 x 2 meter. The market price for excavation is 10$/cu. m.
How do you calculate filling quantity?
Suppose we need to fill the plot by 3’5” = 3.41 feet. So, the depth of the plot = 3.41 feet. Volume of plot to be filled = 1200 x 3.41 = 4092 cft.
How do you calculate fill?
You can calculate fill rate by counting the number of orders that you were able to fulfill at one time. Then divide the number by the total number of orders you received and multiply the sum by 100.
How do you calculate the area of a filling?
Calculation Procedure of sand filling/soil filling for filling plot: Plot’s length (L) = 50 feet. Breadth/width of the plot (B) = 40 feet. Plot’s area (A) = Length x Width = 50 x 40 = 2000 ft2.
Why do you divide by 27 to get cubic yards?
You must divide by 27 because 1 cubic yard equals 27 cubic feet. The answer is the total cubic yards of your area. Using the same example, divide 7,000 cubic feet by 27 to get 259.3 cubic yards.
How do you calculate the volume of a ditch?
Find the volume of your ditch by multiplying the length times the width times the height. Your answer will be measured in cubic yards. If your ditch turns or curves, break it down into rectangular cross sections to find the volume of each rectangle separately. Then, add the volumes together to find your total volume.
How many square feet does a ton of rock cover?
Product Coverage Chart
| Material | Amount | Coverage *(3” depth) |
|---|---|---|
| Decorative Rock | 1 ton covers | 75-85 sq. ft. * |
| (45-60 sq. ft. for 1 1/2″ – 3″ rock) | ||
| Lava Rock | 1 ton covers | 200 – 210 sq. ft.* |
| Driveway and Paver Base (Class 2, Class 5) | 1 ton covers | 65-75 sq. ft. * |
How do you calculate rock coverage?
To calculate the size, measure the length and the width of your project area. Multiply those two numbers to come up with the square footage of your coverage area. So if your project is 18 feet long by 20 feet wide, your coverage area is 360 square feet. Next decide how deep you want your coverage.
How do you price backfill?
The total price for labor per linear foot is $4.57, coming in between $1.60 to $7.54. A typical 50 linear foot project costs $228.34, with a range of $79.89 to $376.79.
Backfill a Trench: national average cost.
| cost to backfill a trench | |
|---|---|
| National Cost Range (labor) for 50 linear foot | $79.89 – $376.79 |
How much does it cost to trench per foot?
Labor costs around $5.75 per linear foot. So if your home project requires a trench that is 200 linear feet, then you’re looking at spending around $1,150 in labor costs.
How do you calculate earthwork in a filling?
Every section is an area formed by the subgrade, the sideslopes, and the original ground surface. Volumes are computed from cross-section measurements by the average end area method. These formulas are used to compute earthwork quantities because the Specifications require this calculation.
What is the formula for calculating the depth of earthwork in cutting?
Example 2 (Both Cutting and Filling) :
| Summary of Various Methods | |
|---|---|
| Methods | Methods / Formula |
| Average Method | Volume=Depth of cutting/filling* area |
| Block Method | Volume=Sum of (Depth of cutting/filling* area of each block) |
| Section Method | Area to be found out using Trapezoidal Method Nett area Method Volume = Lx1/2(A1+ A2) |
How do you calculate the amount of filling in a soil?
You can do it in the following way:
- Determine the length and width of the area you want to cover with soil.
- Calculate the area, multiplying the length by width.
- Establish the depth – thickness of the topsoil layer.
- Multiply the area and dirt layer thickness to obtain its volume: 56 * 0.5 = 28 yd³ .
How do you calculate earthwork in excavation?
To calculate the earthwork estimate requires multiplying the area by the difference between the average of two sets of levels. Formula: Volume = Area * Difference between the average of two sets of levels.
How many cubic yards is a pickup truck?
Full Size Pickup Truck
The bed of a full size standard pickup has dimensions of: 8′ long X 5.33′ wide X 1.5′ high. When loaded level full, a truck of this size will hold 2.5 cubic yards of material. The following chart outlines some additional common capacities of the full-sized pickup truck.
How many sq ft is in a cubic ft?
Cubic feet to Square feet Calculator
| 1 cubic feet = | 1 ft2 | 1 cubic feet |
|---|---|---|
| 2 cubic feet = | 1.5874 ft2 | 2.8284 cubic feet |
| 3 cubic feet = | 2.0801 ft2 | 5.1962 cubic feet |
| 4 cubic feet = | 2.5198 ft2 | 8 cubic feet |
| 5 cubic feet = | 2.924 ft2 | 11.1803 cubic feet |