Before proceeding to the calculation of the cubature of different types of boards and answer the question: “How many boards are in a cube?” - you should consider what the concept of “cubic meter of lumber” means, and what the construction market offers.
Varieties of lumber and their sizes
Boards are obtained by longitudinal cutting of logs. As a standard, they have a length of 4 to 6 meters. The width is different. The thinnest ones belong to the class of lining - up to two and a half centimeters, then comes a shale-board, the thickness of which is basically equal to two centimeters (but it happens also 2.5, 4, and 5 cm). More expensive - edged construction board, the dimensions of which are fairly standardized: the width is always greater than its double height, and the length is 4 (less often 4.5) and 6 meters. Thicker boards are called timber. For convenience, sawn wood is sold in cubes, and for construction it is important to know how many boards in 1 cube.
We will not consider the lining, due to the fact that this type of lumber is used mainly for finishing work and is calculated separately.
First of all, at a construction site, you need a shale-board, which is several times cheaper than edged and is needed for formwork, roofing, lathing, installation of rough floors, construction of utility rooms.
The width of such a board can be 10-15 centimeters, in length they are standard or cut into two or three meters. Knowing the perimeter of the future foundation and the shape of the shale, it is easy to calculate how many boards in a cube and how many cubic meters you need to buy for formwork. For more accurate calculations, you can use online calculators, which are located on the website of most lumber sellers.
What is cubature considered for?
If you directly answer the question: "How many boards are in a cube?" - then there will be one option - a cubic meter. We need more specific data. For example, what area can be sheathed with one cube of sawn timber of a certain thickness?
We arbitrarily denote the width of the board - W, thickness - T, length - D. The result will depend on the thickness (T). The formula of the square (P) is known from the school bench:
- P (m 2 ) = WxD / T (1 mx 1 m / 0.02 m = 50 m 2 ).
That is, if we take a cubic meter of boards 2 cm thick, then they will cover 50 m 2 .
Sometimes you need to find out the total length (D) of a tree in 1 m 3 .
We consider the formula:
And finally, the answer to the question: “How many pieces of board in a cube (bars, round blanks, etc.)?”. If the parameters of lumber are known, then the result can be obtained by applying the formula:
According to this principle, the cubature of one board is also calculated, but do not forget to translate all sizes into meters.
Examples of calculating edged board volumes
The most popular edged board, which is used to arrange walls, floors, ceilings, partitions, rafters and stairs. Each size even has its own "name": inch, forty, five, timber (it is immediately clear what kind of width of the board we are talking about).
To calculate, for example, how many boards in a cube of an inch you can, knowing its width. So, with a width of 10 cm - this is 66 pieces, and with a width of 15 cm - 44 pieces. One cubic meter is enough to cover 40 m 2 .
An example of calculating the cubature of one six-inch inch 15 cm wide:
- 0.15 mx 0.025 mx 6 m = 0.0225 m 3 .
If necessary, calculate the volume of, for example, floorboards (with spikes) in the formula, only the working width of the board (without a spike) is substituted. If a blockhouse is calculated (a board imitating a log), then the thickness is indicated at the highest point.