entering Swell and also Yield Factors

Use swell and also yield factors to estimate how much dust swells as soon as it is excavated native its herbal state top top a job site, and also how lot dirt you will require when you compact the on a task site.

You are watching: Bank cubic yards to loose cubic yards

ProContractor considers organic dirt in terms of bank Cubic Yards (BCY) or bank Cubic meters (BM3). When you excavate or remove the dirt from its normal state, that swells and becomes loose Cubic Yards (LCY) or loose Cubic meter (LM3). Once you replace and also compact the dirt, it i do not care Compacted Cubic Yards (CCY) or Compacted Cubic meters (CM3).

One that the many important concepts to understand is the you must always work v the same units of measurement. One cubic yard the is in the floor of a job site (BCY) will certainly be more than one cubic yard once you dig deep into it out of the floor (LCY). Once you relocate this dirt to another location top top the task site and also compact that in the soil (CCY), that will commonly be much less than a cubic yard.

For example, if you dig deep into 1.0 BCY of dust from the ground, it might swell 25%. To recognize the volume of dirt you will need to haul to another location ~ above the website or off the site, you would certainly multiply the cubic garden by a swollen Factor, i m sorry in this case would be 1.25. This would convert the 1.0 bank Cubic garden (BCY) to 1.25 loosened Cubic Yards (LCY).

According to the calculation of the job, you now recognize you will certainly actually need to haul this 1.25 LCY to one more location top top the project site to usage as compacted to fill material. This way that the loosened Cubic Yards will become Compacted Cubic Yards (CCY). To calculation this, you multiply the loosened Cubic Yard worth by the yield Factor. For example, the 1.25 LCY us calculated in the ahead example might need to it is in compacted by 10% once filled into the ground to transform the unit come Compacted Cubic Yards. To calculate this, you would multiply 1.25 LCY through 1.1, which equates to 1.38 loosened Cubic Yards to equal one Compacted Cubic Yard.

If girlfriend don"t know the yield element for the dirt on a job site, use the yield calculator in ProContractor to determine what the productivity factor based upon the puffy factor, initial density, and also design density. The straightforward equation is:

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Swell factors range between 0.5 and 4.00, and also yield determinants can selection from 1.00 come 4.00. Girlfriend can use swell and yield determinants to every layer of the job.


To collection default swell and yield factors, choose the appropriate boring attributes. See personalizing Boring features for an ext information.

If you change the swell or yield variable for a material, the aspect is updated almost everywhere the product is used.

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To open a project in the control Earthwork estimates screen, click Estimating > Earthwork > manage Earthwork estimates in the All jobs pane. Click open up Existing Job. Then pick the project you desire to open, and also click OK.
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To use swell/yield factors…
open up a task in the manage Earthwork estimates screen. select the an overview tab, if that is not currently active. Click information
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on the speedbar. Choose the factor you want to adjust in the Swell/Yield columns. Girlfriend can change both the swell and also yield for the selected material. In the swell field, click to rise or diminish the swell element for the material. In the yield field, click to boost or to decrease the yield variable for the material. If needed, you deserve to calculate the yield based upon the swell, by law the following:Click Calc.In the Swell aspect field, click to increase or decrease the swell factor for the material.In the Original density field, click to boost or diminish the density percentage because that the initial material.In the architecture Density field, click to boost or to decrease the thickness percentage because that the final material.Click OK. Click OK. The amounts are recalculated based upon the new swell/yield factor and also appear in the changed Quantity column.