What is the bulking factor of concrete?
The bulking factor is the ratio or percentage of the volume change of excavated material to the volume of the original in situ volume before excavation. The bulking factor is used to estimate the likely excavated volumes that will need to be stored on site or perhaps removed from site.
How do you calculate bulking factor?
To use a bulking factor number you have to multiply the bulking factor number by the excavated volume size. If your excavation was 15 m3. You must consider the bulking factor of the material you are digging to ensure you correctly plan for the removal costs and time to do it in.
How is fluff factor calculated?
Calculating the percentage change in height from the wet soil to the dry will give you a measure of the swell factor of the soil. For example, if the dry soil was 1 inch high and the wet soil is 1.54 inches high, divide 1 by 1.54 and multiply by 100 to get a 65 percent swell factor.
How do you calculate bulk excavation?
So, the formula is: Ab = Wb * Lb, where Wb and Lb are the width and length of the bottom of the excavation. At = Wt * Lt, where Wt and Lt are the width and length of the top of the excavation.
What is bulking factor of sand?
Soil and rock expansion – or swell – after mining.
| Material | Density at the Borrow 103 (kg/m3) | Bulking (Swell) Factor (%) |
|---|---|---|
| Sand, dry | 1.60 | 20 – 30 |
| Sand, wet | 1.95 | 20 – 30 |
| Sandstone | 2.1 – 2.4 | 75 – 80 |
| Slate | 2.6 – 3.3 | 85 – 90 |
What is the bulking factor of rock?
The bulking factor parameter is used to describe an increase in volume that may occur when a block of rock breaks up to form rubble or when a mass of soil is excavated.
What is bulking in construction?
It is the increase in volume of a given quantity of sand, a phenomenon that is not present in gravels. The bulking factor has to be taken very much into account at the time of calculating the excavation production and assessing transportation requirements.
Is swell factor the same as load factor?
The swell factor can be used to calculate the volume increase. The load factor can be used to calculate the weight of the material per cubic metre/yard from bank to loose state.
What is a swell factor?
The swell factor of soil is the amount of volume increase from the undisturbed (BCY) to the excavated (LCY) state due to the air pockets (fluff) created. Swelling pressure is the pressure that the expansive soil exerts if it is not allowed to swell or if the soil volume change is arrested.
What is a bulk excavation?
Excavation is often one of the most expedient ways to remove environmentally impacted soils. Once excavated, soils need to be removed from the site and transported to a MOECC licensed facility for disposal. The impacted soil must then be replaced with clean fill and restored.
How do you calculate rate per m3 for excavation?
of days required for 10m3 excavation = 10/242.4242 = 0.04125 days. Likewise, based on the capacity of other equipment, labors etc., their cost is calculated. Contractors profit is also added to the total cost of labors and machineries. Then grand total gives the rate of excavation per 10m3 of soil excavation.
What is bulking of sand in concrete?
The increase in the volume of sand due to increase in moisture content is known as bulking of sand . A film of water is created around the sand particles which forces the particles to get a side from each other and thus the volume is increased. The increase in moisture in sand increases the volume of sand.
What is a bulking and compaction factor chart?
Commonly-used bulking and compaction factor charts provide generic estimates, and don’t necessarily reflect the actual state of the material being excavated. Incorrectly estimated or misunderstood factors can add significant costs to a project due to material measurement inaccuracies.
What is bulking factor in construction?
EXCAVATION & EARTHWORK QUANTITY SURVEYING, UITM SHAH ALAM Bulking Factor Posted on April 26, 2017May 9, 2017bymegaconstructionwebinUncategorized Bulking factor is a ratio comparing the volume of a quantity of moist granular material to the volume of the same quantity when dry.
What are the bulking or swell factors for some materials?
Bulking or swell factors for some materials: Material Density at the Borrow 103 (kg/m3) Bulking (Swell) Factor (%) Basalt 2.4 – 3.1 75 – 80 Clay 1.8 – 2.6 20 – 40 Dolomite 2.8 50 – 60 Earth 20 – 30
How do you calculate bulking factor for earth moving projects?
When working on a large earth moving project it is even more critical to calculate this correctly. To use a bulking factor number you have to multiply the bulking factor number by the excavated volume size. For instance, a bulking factor for Clay and Gravel is typically 1.15