Weight of construction waste: table, calculation, density per 1 cubic meter

What is it for and where can it be useful?

During the renovation or construction of a facility, a large amount of waste is generated. To dispose of unwanted materials, you need to use the services of waste removal companies. The weight of the waste will help you calculate the approximate number of vehicles needed to remove construction waste. And also estimate the cost of services.

Before construction and repair work begins, an estimate is drawn up and a certain amount of waste disposal costs is included in the budget.

To simplify calculations, the weight of construction waste is converted from cubic meters to tons. You can calculate the approximate volume and weight of recyclable materials with the help of a specialist or yourself.

Waste density in 1 cubic meter

You need to understand that different types of materials are used during renovation and construction.
Wood, concrete, bricks. They all have different densities. It shows us the ratio of body mass to its volume. When comparing 1 m3 of wooden waste with 1 m3 of concrete products, the mass of the second will be much greater than the first. Consequently, the density of concrete structures is greater than that of wood.

The density indicator is one of the fundamental factors when drawing up an approximate estimate for construction waste removal services.

Special machines have limited load capacity. And, if 5 tons of wood fit into a car, this does not mean that it can carry 5 tons of concrete.

Below is a list of average densities of various materials:

concrete waste and reinforced concrete structures - 2.4 t/m3;
remains of stone and brickwork, tiles, tiles - 1.8 t/m3;
wooden waste, including wooden structures - 0.6 t/m3;
other mixed type waste (except for engineering, technological and metal structures) - 1.2 t/m3.

The list shows the densities of the materials in their unassembled state. After directly dividing the object into its components, waste can be grouped. In such a disassembled state, the density indicators will have slightly different data.

Approximate values of the density of materials in the disassembled state:

mixed type of waste during demolition of a building - 1.6 t/m3;
broken brick - 1.9 t/m3;
removed road asphalt surface - 1.1 t/m3;
steel products - 0.8 t/m3;
wood waste - 0.6 t/m3.

Knowing the approximate density of a particular material is necessary to determine the mass and volume of construction waste.

Table

Garbage type	Package	Volumetric weight, tons/m3		Specific gravity, m3/ton
Oscillation limits	Average calculated value	Oscillation limits	Average calculated value
Construction waste	in bulk	1,10 – 1,40	1,20	0,91 – 0,71	0,83
Household and street garbage	in bulk	0,30 – 0,65	0,55	3,33 – 1,54	1,82
Wooden scraps	in bulk	0,35 – 0,55	0,40	2,86 – 1,82	2,86 – 1,82
Fabric scraps	in bulk	0,30 – 0,37	0,35	3,33 – 2,70	2,86
Wood sawdust	in bulk	0,20 – 0,30	0,25	5,00 – 3,33	4,00
Snow wet	in bulk	0,70 – 0,92	0,80	1,43 – 1,09	1,25
Snow wet	in bulk	0,40 – 0,55	0,45	2,50 – 1,82	2,22
Snow is dry	in bulk	0,10 – 0,16	0,12	10,00 – 6,25	8,33
Boiler slag	in bulk	0,70 – 1,00	0,75	1,43 – 1,00	1,33
Crushed brick	in bulk	1,20 – 1,35	1,27	0,83 – 0,74	0,79
Wood chips	in bulk	0,15 – 0,30	0,25	6,68 – 3,33	4,00
Electrical fittings	in bulk	0,37 – 0,63	0,50	2,70 – 1,59	2,00
Asphalt, bitumen, crushed tar	in bulk	1,15 – 1,50	1,30	0,87 – 0,67	0,77
Various fights, glass, faience	in bulk	2,00 – 2,80	2,50	0,50 – 0,36	0,40
Paper	rolls	0,40 – 0,55	0,50	2,50 – 1,82	2,00
Paper	bales	0,65 – 0,77	0,70	1,54 – 1,30	1,43
Paper	ligaments	0,50 – 0,65	0,55	2,00 – 1,54	1,82
Old pressed paper - waste paper	bales	0,35 – 0,60	0,53	2,86 – 1,67	1,89
Bottles are empty	in bulk	0,35 – 0,42	0,40	2,86 – 2,38	2,50
Rags	bales	0,15 – 0,20	0,18	6,68 – 5,00	5,56
Large metal products, pipe parts	0,40 – 0,70	0,60	2,50 – 1,43	1,67
Plastic products	without packaging	0,40 – 0,65	0,50	2,50 – 1,54	2,00
Glass products other than sheet glass	0,26 – 0,50	0,40	3,85 – 2,00	3,85 – 2,00
Cardboard	bales	0,59 – 1,00	0,70	1,70 – 1,00	1,43
Cardboard	ligaments	0,42 – 0,45	0,43	2,38 – 2,22	2,33
Scrap steel, cast iron, copper and brass	in bulk	2,00 – 2,50	2,10	0,50 – 0,40	0,48
Aluminum scrap	in bulk	0,60 – 0,75	0,70	1,67 – 1,33	1,43
Oversized household scrap	in bulk	0,30 – 0,45	0,40	3,33 – 2,22	2,50
Various small machine parts	in bulk	0,42 – 0,70	0,50	2,38 — 1,43	2,00
Various furniture	0,25 – 0,40	0,30	4,00 – 2,50	3,33

By the way, a special vacuum cleaner is very suitable for cleaning small construction debris.

Calculation of the weight and volume of construction waste

Accounting for construction waste and return of materials from dismantling is provided in the estimate documentation. Payment for the services provided for placement and processing at the sites of a specialized organization of construction waste and materials from dismantling that are unsuitable for further use is taken into account in the estimate documentation as other costs.

The volumes of construction waste and other construction waste and their hazard class are taken according to the regulations for the management of construction waste, which should be part of the project documentation.

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Garbage removal. Select a service. Calculation of the weight and volume of construction waste In the process of dismantling, dismantling buildings or structures or individual structural elements, as well as during construction, installation and repair work, returnable materials are generated, returnable materials with a residual value - scrap metal and firewood or construction waste.

Construction waste is also generated during construction, installation or repair work: From the dismantling of buildings and structures, their individual structural elements or engineering and technological equipment; From punching openings and holes; From that part of the materials that cannot be used in the process of work, concrete mixture or mortar hardened in vehicles, fragments of bricks, small blocks and other wall materials, etc.

Concepts of specific and volumetric gravity

Density is often confused with the concepts of specific and volumetric gravity. The specific gravity of a material is the ratio of the weight of a substance to the volume it occupies .
This value is measured in N/m3. The concepts of weight and mass from a physical point of view have a significant difference between themselves. However, on Earth, in everyday use, the weight of a substance is neglected. Therefore, the specific gravity of construction waste is measured by the ratio kg/m3.

Volumetric weight, which is also called overall weight, is a calculated value that reflects the density of the cargo. Given the same weight of an object, a less dense one will take up more space than a more dense one. Volumetric weight is compared with actual weight. The export documentation will indicate the highest of these indicators. Volumetric weight is calculated using the formula: (width*length*height)/5000.

Calculation methods

Before you start dismantling a building, thoughts arise about where to put the garbage. There is only one solution - order pickup. Everyone wants to know in advance how much it will cost financially. To do this, first calculate how much waste can be generated from a building that has not yet been dismantled. Main stages:

Determine the dimensions of the building. Measurements are taken starting from the lowest point of the foundation and ending at the ridge. Multiply the height by the width and the length. The result is volume.
The next step is to determine the exact volume of expected waste. Calculations are performed using the formula: the volume of the building is divided by the loosening index, which according to all regulations varies from 2 to 3. At its core, the number takes into account the spread of the resulting loosening after dismantling the structure. More accurate calculations will be when using a coefficient from 2 to 2.65. The volume of waste includes not only the structure, but also the occupancy of the room. The result is a volume in a dense body, that is, in an undisassembled form.
In conclusion, all that remains is to determine the weight of construction waste for disposal. This is easy to do: you need to multiply the resulting volume by the MOB coefficient. It is individual for each type of material. All data is presented in the table above.

We recommend: Proper disposal of fluorescent fluorescent lamps

How much does 1m3 weigh and how to calculate?

To determine the weight of construction waste that was generated during the work, it is necessary to determine the density of the material included in the remains. Density indicators can be determined using special tables or calculated using simple mathematical formulas.

After determining the density, the specific gravity or mass of one cubic meter is determined. Residues of building materials formed during construction or demolition are counted in m3. And companies involved in the removal of construction waste determine it in tons. To roughly calculate the cost of waste disposal, you need to convert cubic meters to tons.

Calculation algorithm

In order to find out the indicators - the mass and volume of generated waste, you can use tabular calculation data. To determine the weight of one cubic meter of a substance, you need to use the average density indicator.

If such data is not provided, then it will be enough to multiply the volume by the density. Using indicators of average volumetric mass, you can calculate how many tons a particular type of material weighs.

Example

For clarity, let’s calculate the weight of construction waste.
For example, we have 5 m3 of brickwork. We use the average density of 1800 kg/m3 to calculate the mass. 1800×5=9000 kg=9 tons. Using the average density value, you can determine the mass of waste of a given volume without resorting to calculations. For example, the mass of 1 m3 of wood waste is 600 kg, since the average density of wood waste is 0.6 t/m3.

How to calculate the weight of 1 m3 of building material?

To calculate the tonnage of garbage generated during work, it is necessary to determine the density of the residues. Determination of parameters is available by solving mathematical examples or applying average values.

Scrap resulting from construction or dismantling is indicated in m3, and during transportation - in tons. Qualified solid waste transport companies carry out translations to determine costs during the provision of services.

Algorithm of actions

In the process of calculating the basic parameters of the material, you can use tabular averaged information. Indicators of the properties of raw material components are interrelated.

In the absence of such data, it is necessary to multiply the digital characteristics.

Example

During the demolition of the construction base, 3 cubic meters of component materials and another 1.5 cubic meters of concrete and brick were formed. We calculate the carrying capacity by converting the unit of measurement to ton.

We use a table sign for compaction of a substance:
building material during disassembly – 1600 kg/m3;
concrete – 2400 kg/m3;
brick remains - 1800 kg/m3.
Determination of mass:
1600*3=4800 kg = 4.8 tons of construction waste;
2400*1.5=3600 kg = 3.6 tons of concrete;
1800 * 1.5 = 2700 kg = 2.7 tons of bricks.

If one cubic meter of raw material is formed, there is no need to apply calculations. It is enough to convert kilograms to tons or vice versa.

Calculation of waste during building dismantling

When dismantling a building, the amount of construction waste is large. But still, the preliminary amount of construction waste can be counted. To do this, we will use the following algorithm of actions:

Determine the volume of the building. We multiply the width, length and height of the house, taking into account the roof and foundation.
The actual volume of construction waste can be determined by multiplying the volume of the building by the loosening coefficient. The coefficient has a value of 2.0.
We calculate the mass of waste removed by multiplying the volume of the building by the density of the type of waste.

Using this algorithm, you can find the approximate value of the mass of exported raw materials. This will help calculate the number of containers or vehicles for transporting waste for recycling.

If the waste is of small mass, ordinary containers are used; if the construction waste is heavy, such as fragments of bricks or concrete slabs, heavy vehicles and dump trucks are used.