Log cubature: how to calculate the volume of rounded logs. Wooden houses and baths to order How many diameters is a log 6 meters long

Rounded logs are an ideal material for building a bath or country house. Such products are distinguished by environmental friendliness and safety, attractive appearance and fast installation, ease of installation and processing. Due to a special manufacturing technology, the logs acquire a perfectly even cylindrical shape and a smooth surface, the same diameters and dimensions.

Thanks to these parameters, the products are stacked closely, which eliminates the appearance of cracks in the log house. In addition, the construction of a house or a bath is easy and fast. The log structure will look elegant and neat.

10 reasons to build a house from logs

• Natural and environmentally friendly wood does not emit toxic substances and is safe for humans. Moreover, the tree has healing properties and favorably affects the well-being and sleep of a person;
• Wood contributes to rapid air exchange and renews oxygen up to 30% per day. Therefore, in wooden house always comfortable and easy to breathe;
• Attractive and aesthetic appearance. The log house looks elegant and natural. It will harmoniously fit into any landscape and will stand out against the background of other buildings;
• Due to the special processing of the material on the machines, the logs get a flat and smooth surface. Therefore, the products fit snugly against each other and exclude the appearance of gaps in the walls;
• The same diameters and dimensions of logs speed up and simplify installation. Depending on the complexity of the project, the installation of a log house will take only from 3-5 days to 3-4 weeks!;
• The light weight of wood does not require a massive and expensive foundation;
• The rounded log does not require decorative finishes either inside or outside the building. By the way, finishing “under zero” in a log house looks harmonious and impressive;
• Wood has high heat and sound insulation performance. The log house is warm, quiet and calm;
• With the correct caulking of the log house, a second procedure is not required. Whereas at home from a bar, repeated caulking is required after shrinkage;
• Logs are easy to process, which allows you to create interesting designs (houses with a bay window, carved balconies, verandas in the form of a rotunda, etc.). In addition, a log house can be built in any style!

How to calculate the volumes of materials

For those who decide to build a log house, it is important to correctly calculate required amount building materials. Since the logs are characterized by a cylindrical shape, the calculation must be based on this parameter. You cannot calculate the volume by simply multiplying the thickness of the walls by the height. To properly do it yourself, use a special cube of rounded logs.

The simplest calculation is carried out according to the formula = P * R2 * N, where

P = 3,14;
R2- the radius of the rounded log squared;
H- the length of the rounded log.

We multiply the result by the number of logs needed to build a house or a bath. Do not forget to add 7%, which is allocated for the shrinkage of the log cabin. To facilitate the calculation, the results for different log diameters are presented in the table of log cubature.

Table of cubic capacity of rounded logs 6 meters long

Diameter, mm	Height, mm	volume, m3	Area, m2	Quantity in m3, pcs
140	130,6	0,09	1,453	11,1
160	149,2	0,12	1,662	8,29
180	167,9	0,15	1,869	6,55
200	186,6	0,19	2,078	5,31
220	205,2	0,23	2,286	4,39
240	223,9	0,27	2,493	3,69
260	242,5	0,32	2,701	3,14
280	261,2	0,37	2,908	2,71
300	279,9	0,42	3,117	2,36
320	298,5	0,48	3,325	2,07
340	317,2	0,54	3,532	1,84
360	335,8	0,61	3,74	1,64

The volume and cost of materials is affected not only by the type of wood, but also by the diameters of the log. If you are planning to build a house for permanent residence, choose sizes of at least 240 mm, and for the northern regions - more than 260 mm. If it's summer country house for seasonal living and recreation, logs with a diameter of 220 mm are suitable. For a gazebo, you can take the minimum size.

The table is not the only way to calculate the required amount of building materials. There is a special online calculator that will quickly and accurately calculate the quantity and cost of materials, taking into account shrinkage, internal partitions and other factors.

In addition, the calculator will calculate the usable area of ​​the room, the number of crowns and the load on the foundation. As a rule, on the websites of construction companies, each typical project accompanies its own calculator.

If you do not know how to correctly calculate the cubic capacity of logs, MariSrub specialists will help you! Experienced craftsmen select and calculate the volume of materials. Experts recommend choosing rounded pine logs, as this is the best price-quality ratio.

Pine is an affordable strong wood, which is distinguished by strength and durability, a pleasant coniferous aroma and beautiful texture. Choose the option you like log house or order individual project! Specialists will prepare a free estimate of the future home or cottage, calculate the volume of materials and the cost of construction.

This question is the most relevant when it comes to building a house from a log. How to calculate the cubic capacity of the house yourself? How to check the declared forest cubes in the estimate from the developer?

Here is a table that shows the cubic capacity roundwood depending on the diameter of the log. These calculations are given in accordance with GOST 2708-75, which is valid in the territory Russian Federation since 1975. The table allows you to calculate how many cubes of roundwood it will take to build a house from a log from a manufacturer.

The standard length of logs that are used for the construction of log cabins is 6 meters. Blanks of this length are most often used. Logs with a length of more than 6 meters are used very rarely for the production of hand-cut houses.

Most often, the architect optimizes the log house according to the cutting map in such a way as to avoid (or minimize) the use of long lengths. It is technically impossible to produce a rounded log over 6 meters at all.

The table below shows the volume of round timber, and for your convenience, we have highlighted the column of 6-meter blanks.

Table for calculating the cubic capacity of roundwood with a diameter of 10 to 100 cm and a length of 3 to 8 meters
		3.5 m	4 m	4.5 m	5 m	5.5 m	6 m	6.5 m	7 m	7.5 m	8 m
	0,026	0,031	0,037	0,044	0,051	0,058	0,065	0,075	0,082	0,09	0,1
D 11 cm	0,032	0,037	0,045	0,053	0,062	0,07	0,08	0,09	0,098	0,108	0,12
D 12 cm	0,038	0,046	0,053	0,063	0,073	0,083	0,093	0,103	0,114	0,125	0,138
D 13 cm	0,045	0,053	0,062	0,075	0,085	0,097	0,108	0,12	0,132	0,144	0,158
D 14 cm	0,052	0,061	0,073	0,084	0,097	0,11	0,123	0,135	0,15	0,164	0,179
D 15 cm	0,06	0,071	0,084	0,097	0,11	0,125	0,139	0,153	0,169	0,182	0,199
D 16 cm	0,069	0,082	0,095	0,11	0,124	0,14	0,155	0,172	0,189	0,2	0,22
D 17 cm	0,077	0,092	0,107	0,124	0,14	0,157	0,174	0,191	0,209	0,225	0,25
D 18 cm	0,086	0,103	0,12	0,138	0,156	0,175	0,194	0,21	0,23	0,25	0,28
D 19 cm	0,097	0,115	0,134	0,154	0,173	0,193	0,212	0,235	0,255	0,275	0,305
	3.0 m	3.5 m	4.0 m	4.5 m	5.0 m	5.5 m	6.0 m	6.5 m	7.0 m	7.5 m	8.0 m
D 20 cm	0,107	0,126	0,147	0,17	0,19	0,21	0,23	0,26	0,28	0,3	0,33
D 21 cm	0,119	0,14	0,163	0,185	0,21	0,23	0,255	0,285	0,31	0,335	0,365
D 22 cm	0,134	0,154	0,178	0,2	0,23	0,25	0,28	0,31	0,34	0,37	0,4
D 23 cm	0,114	0,169	0,194	0,22	0,25	0,275	0,305	0,335	0,37	0,4	0,435
D 24 cm	0,157	0,184	0,21	0,24	0,27	0,3	0,33	0,36	0,4	0,43	0,47
D 25 cm	0,171	0,197	0,23	0,26	0,295	0,325	0,36	0,395	0,43	0,465	0,505
D 26 cm	0,185	0,21	0,25	0,28	0,32	0,35	0,39	0,43	0,46	0,5	0,54
D 27 cm	0,203	0,23	0,27	0,305	0,345	0,38	0,42	0,46	0,495	0,54	0,585
D 28 cm	0,22	0,25	0,29	0,33	0,37	0,41	0,45	0,49	0,53	0,58	0,63
D 29 cm	0,235	0,27	0,31	0,355	0,395	0,44	0,485	0,525	0,57	0,62	0,675
	3m	3.5 m	4 m	4.5 m	5 m	5.5 m	6 m	6.5 m	7 m	7.5 m	8 m
D 30 cm	0,25	0,29	0,33	0,38	0,42	0,47	0,52	0,56	0,61	0,66	0,72
D 31 mm	0,265	0,31	0,355	0,405	0,45	0,5	0,555	0,6	0,655	0,72	0,77
D 32 cm	0,28	0,33	0,38	0,43	0,48	0,53	0,59	0,64	0,7	0,76	0,82
D 33 cm	0,3	0,35	0,405	0,46	0,51	0,565	0,625	0,68	0,74	0,805	0,87
D 34 cm	0,32	0,37	0,43	0,49	0,54	0,6	0,66	0,72	0,78	0,85	0,92
D 35 cm	0,34	0,395	0,455	0,515	0,57	0,635	0,7	0,76	0,83	0,9	0,97
D 36 cm	0,36	0,42	0,48	0,54	0,6	0,67	0,74	0,8	0,88	0,95	1,02
	0,375	0,44	0,505	0,57	0,635	0,705	0,78	0,85	0,925	1,0	1,075
D 38 cm	0,39	0,46	0,53	0,6	0,67	0,74	0,82	0,9	0,97	1,05	1,13
D 39 cm	0,41	0,48	0,555	0,63	0,705	0,78	0,86	0,945	1,02	1,105	1,19
	3m	3.5 m	4 m	4.5 m	5 m	5.5 m	6 m	6.5 m	7 m	7.5 m	8 m
	0,43	0,5	0,58	0,66	0,74	0,82	0,9	0,99	1,07	1,16	1,25
D 41 cm	0,45	0,53	0,61	0,695	0,775	0,86	0,95	1,035	1,125	1,22	1,315
D 42 cm	0,47	0,56	0,64	0,73	0,81	0,9	1,0	1,08	1,18	1,28	1,38
D 43 cm	0,495	0,585	0,67	0,765	0,85	0,945	1,045	1,14	1,24	1,34	1,34
D 44 cm	0,515	0,61	0,7	0,8	0,89	0,89	1,09	1,2	1,3	1,4	1,51
D 45 cm	0,543	0,64	0,735	0,835	0,935	1,035	1,14	1,25	1,355	1,465	1,48
D 46 cm	0,57	0,67	0,77	0,87	0,98	1,08	1,19	1,3	1,41	1,53	1,65
D 47 cm	0,595	0,7	0,805	0,91	1,02	1,13	1,245	1,355	1,475	1,6	1,725
D 48 cm	0,62	0,73	0,84	0,95	1,06	1,18	1,3	1,41	1,54	1,167	1,8
D 49 cm	0,645	0,76	0,875	0,99	1,105	1,23	1,355	1,475	1,605	1,74	1,875
	3m	3.5 m	4 m	4.5 m	5 m	5.5 m	6 m	6.5 m	7 m	7.5 m	8 m
D 50 cm	0,67	0,79	0,91	1,03	1,15	1,28	1,41	1,54	1,67	1,81	1,95
D 51 cm	0,7	0,825	0,95	1,075	1,2	1,335	1,47	1,605	1,74	1,89	2,035
D 52 cm	0,73	0,86	0,99	1,12	1,25	1,39	1,53	1,67	1,81	1,97	2,12
D 53 cm	0,765	0,895	1,03	1,165	1,3	1,445	1,59	1,735	1,885	2,045	2,205
D 54 cm	0,8	0,93	1,07	1,21	1,35	1,5	1,65	1,8	1,96	2,12	2,29
D 55 cm	0,83	0,97	1,115	1,26	1,405	1,56	1,715	1,875	2,035	2,2	2,375
D 56 cm	0,86	1,01	1,16	1,31	1,46	1,62	1,78	1,95	2,11	2,28	2,46
D 57 cm	0,89	1,045	1,205	1,36	1,515	1,68	1,875	2,015	2,19	2,365	2,545
D 58 cm	0,92	1,08	1,25	1,41	1,57	1,74	1,91	2,08	2,27	2,45	2,63
D 59 cm	0,955	1,12	1,29	1,46	1,625	1,8	1,98	2,155	2,345	2,535	2,72
	3m	3.5 m	4 m	4.5 m	5 m	5.5 m	6 m	6.5 m	7 m	7.5 m	8 m
D 60 cm	0,99	1,16	1,33	1,151	1,151	1,86	2,05	2,23	2,42	2,62	2,81
D 61 cm	1,025	1,2	1,38	1,565	1,74	1,925	2,115	2,3	2,495	2,7	2,9
D 62 cm	1,06	1,24	1,43	1,62	1,8	1,99	2,18	2,37	2,57	2,78	2,99
D 63 cm	1,095	1,285	1,475	1,67	1,855	2,05	2,25	2,445	2,65	2,865	3,08
D 64 cm	1,13	1,33	1,52	1,72	1,61	2,11	2,32	2,52	2,73	2,95	3,17
D 65 cm	1,165	1,365	1,565	1,77	1,965	2,17	2,38	2,59	2,805	3,03	3,275
D 66 cm	1,2	1,4	1,61	1,82	2,02	2,23	2,44	2,66	2,88	3,11	3,38
D 67 cm	1,235	1,445	1,655	1,87	2,075	2,29	2,505	2,735	2,965	3,21	3,485
D 68 cm	1,27	1,49	1,7	1,92	2,13	2,35	2,57	2,81	3,05	3,31	3,59
D 69 cm	1,305	1,53	1,75	1,97	2,19	2,415	2,645	2,89	3,14	3,41	3,695
	3m	3.5 m	4 m	4.5 m	5 m	5.5 m	6 m	6.5 m	7 m	7.5 m	8 m
D 70 cm	1,34	1,57	1,8	2,02	2,25	2,48	2,72	2,97	3,23	3,51	3,8
D 71 cm	1,375	1,615	1,85	2,08	2,315	2,55	2,795	3,055	3,325	3,615	3,91
D 72 cm	1,41	1,66	1,9	2,14	2,38	2,62	2,87	3,14	3,42	3,72	4,02
D 73 cm	1,45	1,705	1,955	2,2	2,45	2,695	2,95	3,23	3,52	3,82	4,135
D 74 cm	1,49	1,75	2,01	2,26	2,52	2,77	3,03	3,32	3,62	3,92	4,25
D 75 cm	1,53	1,8	2,065	2,325	2,595	2,845	3,115	3,415	3,715	4,03	4,365
D 76 cm	1,57	1,85	2,12	2,39	2,67	2,92	3,2	3,51	3,81	4,14	4,48
D 77 cm	1,615	1,9	2,18	2,455	2,745	3,0	3,29	3,605	3,925	4,255	4,6
D 78 cm	1,66	1,95	2,24	2,52	2,82	3,08	3,38	3,7	4,04	4,37	4,72
D 79 cm	1,7	2,0	2,295	2,59	2,895	3,16	3,475	3,8	4,15	4,485	4,835
	3m	3.5 m	4 m	4.5 m	5 m	5.5 m	6 m	6.5 m	7 m	7.5 m	8 m
D 80 cm	1,74	2,05	2,35	2,66	2,97	3,24	3,57	3,9	4,26	4,6	4,95
D 81 cm	1,785	2,1	2,41	2,73	3,05	3,325	3,66	4,005	4,365	4,51	5,085
D 82 cm	1,83	2,15	2,47	2,8	3,13	3,41	3,75	4,11	4,47	4,82	5,22
D 83 cm	1,875	2,205	2,53	2,87	3,205	3,495	3,845	4,215	4,585	4,495	5,345
D 84 cm	1,92	2,26	2,59	2,94	3,28	3,58	3,94	4,32	4,7	5,07	5,47
D 85 cm	1,965	2,315	2,65	2,985	3,34	3,675	4,035	4,43	4,82	5,195	5,595
D 86 cm	2,01	2,37	2,71	3,03	3,4	3,77	4,13	4,54	4,94	5,32	5,72
D 87 cm	2,06	2,425	2,78	3,13	3,5	3,86	4,235	4,655	5,06	5,445	5,86
D 88 cm	2,11	2,48	2,85	3,23	3,6	3,95	4,34	4,77	5,18	5,57	6,0
D 89 cm	2,16	2,535	2,915	3,3	3,685	4,045	4,45	4,88	5,3	5,7	6,135
	3m	3.5 m	4 m	4.5 m	5 m	5.5 m	6 m	6.5 m	7 m	7.5 m	8 m
D 90 cm	2,21	2,59	2,98	3,37	3,77	4,145	4,56	4,99	5,42	5,83	6,27
D 91 cm	2,255	2,65	3,045	3,45	3,45	4,24	4,67	5,105	5,545	5,96	6,41
D 92 cm	2,3	2,71	3,11	3,53	3,94	4,34	4,78	5,22	5,67	6,09	6,55
D 93 cm	2,355	2,77	3,18	3,605	4,025	4,43	4,89	5,345	5,795	6,225	6,69
D 94 cm	2,41	2,83	3,25	3,68	4,11	4,52	5,0	5,47	5,92	6,36	6,83
D 95 cm	2,46	2,89	3,32	3,76	4,2	4,625	5,11	5,58	6,045	6,495	6,975
D 96 cm	2,51	2,95	3,39	3,84	4,29	4,73	5,22	5,69	6,17	6,63	7,12
D 97 cm	2,565	3,01	3,46	3,92	4,38	4,83	5,335	5,81	6,3	6,77	7,28
D 98 cm	2,62	3,07	3,53	4,0	4,47	4,93	5,45	5,93	6,43	6,91	7,44
D 99 cm	2,67	3,135	3,6	4,085	4,56	5,035	5,565	6,06	6,565	7,055	7,585
D 100 cm	2,72	3,2	3,67	4,17	4,65	5,14	5,68	6,19	6,7	7,2	7,73

How is the cubic capacity of a wooden house calculated in a preliminary calculation?

First you need to calculate how many blanks are needed to build a house from a log. IN finished projects from "AZBUKA FOREST" this information is contained in the "Nesting charts" section. The photo below provides a summary for construction by.

This data is for a rounded log with a diameter of 240 mm and a length of 6 meters. We see from the cutting map that we need 547 blanks for construction, when converted to Cubic Meters according to the table above, 146.71 m3 is obtained. These data are automatically calculated by the AT-VENTSY program.

The program, in which our architects design wooden houses, gives the exact cubic capacity without window and door openings, taking into account all design features wooden house. It is almost impossible to achieve such accuracy with manual calculation.

547*0.33= 180.51 m3.

Thus, we got the result taking into account the lunar groove - the log, relatively speaking, is calculated as a cylinder, and the program calculates it minus the lunar groove.

This calculation once again proves the importance of a professional project and the availability of cutting charts, which allow you to very accurately calculate the number of logs and lumber and rationally use the construction budget. But for approximate calculations, in order to understand the order of prices, this method is very informative.

Mathematical method for calculating the cubature of a wooden house (with a practical example)

What to do if you like the house in the picture, and you do not have a complete project, and even more so a cutting chart? In this case, you need to be patient and manually calculate the length of all logs according to the plan. It must be understood that in this case the error with the real result can be significant, and in both directions.

The task is to calculate how many blanks are needed to build a house from a log. The standard log length, as we have previously told you, often does not exceed 6 meters. It is very important at this stage to determine the height of the floors! And according to this, calculate the number of crowns.

To do this, we need a table of log profile heights depending on the diameter. It is presented below. We consider the length of all crowns (logs), including gables, and divide the resulting number by 6.

Round log profile height

Log diameter, mm	Crown height, m	Crown height, mm
220	0,1905	190,5
240	0,2078	207,8
260	0,2252	225,2
280	0,2425	242,5
300	0,2598	259,8
320	0,2771	277,1
340	0,2944	294,4
360	0,3225	322,5
380	0,3399	339,9
400	0,3572	357,2

EXAMPLE:

Suppose we want to build a house from a chopped log with a diameter of 320 mm. One full floor, second floor - attic. The desired height of the first floor after shrinkage is 3100 mm, the desired height of the attic against the wall is 1500 mm. The height of one crown with a diameter of 320 mm is 0.2771 mm.

Important! The average height of the first floor of any log house before shrinkage is 3.2 m, the height of the attic wall in the attic is on average 1.5-1.7 m. After shrinkage, the height of the walls will decrease by about 7-10%, so this must be taken into account in the initial calculations . It is also necessary to take into account the composition of the floor of the first and second floors. A competent architect will always tell you how to do it right.

So in our example:

• First floor before shrinkage: 12 crowns, which will be equal to 3.33 m.
• Attic wall in the attic before shrinkage: 6 crowns, which is equal to 1.66 m.

Now we need the length of the walls of each floor. To do this, it is necessary to calculate the perimeter of all walls (bearing and internal) according to the plan.

Suppose that the length of the first floor is 100 linear meters, and the length attic floor amounted to 85 m.p.This is the result without subtracting window and door openings. If you need a more accurate number, then you need to calculate all the openings in length and height and subtract from the total number.

We will consider a more simplified version of calculating the cubic capacity of a log house from a manufacturer.

So,

• First floor 100 m * 12 crowns = 1200 m.p
• Attic floor 85 m * 6 crowns = 510 r.m.

So, the total length of the walls: 1200+510=1710 r.m.

Thus, we got the total length of the walls only, excluding gables, balconies, terraces, vertical support pillars, chopped trusses and other elements that may be included in the design of the house.

Important! To the result of the cubature, you need to add 5%, which will fall on figured releases of logs and ridge logs. The exact number depends on the diameter of the log, cutting method. For approximate calculations, we will limit ourselves to 5%.

So, we divide the resulting length by 6 meters and get 1718/6 = 286.33 pcs. Thus, for the construction of walls in our log house, 287 blanks will be required. We multiply this number by 0.59 (data from the "Table for calculating the cubic capacity of roundwood") and get169.33 m3.

We need to add pediments to the resulting cubature. There are 2 of them in the simplest case, they are triangular. The area of ​​2 triangles will be approximately equal to the area of ​​the rectangle. Therefore, we consider the length of one wall, where the pediment is. We multiply by the number of crowns and get the length of the log in both gables. We divide the result by 6.

Important! The sum of the attic crowns and gables is equal to the height of the first floor. Therefore, if we have 12 crowns on the first floor, and 6 crowns in the attic, then there will be 6 crowns in the gables (12–6 = 6).

Suppose that the length of the pediment is 11 meters, we have 6 crowns. So, 11 * 6 = 66 m. Divide by 6, we get 11 pieces. 11 * 0.59 = 6.49 m3

Thus, the cubic capacity of our house made of a log with a diameter of 320 mm is 169.33 + 6.49 = 175.82 m3. When rounded up, we get 176 m3.

It was possible to go from the opposite, first calculate the number of all blanks, and then convert to cubic meters. Let's check our result like this:

287 (blanks for walls) + 11 (blanks for gables) = 298 * 0.59 = 175.82 m3, rounded, 176 m3.

That is, everything is correct.

Important! Keep in mind that this is not the final result yet. You need to study the sketch and if there are terraces, balconies and vertical pillars, they must be added to the total number. We consider this manually, because calculation we have with you - mathematical. For example, if there are poles, then each pole is considered as one 6-meter blank of the desired diameter. We also consider a fence for a terrace, cuts, chopped trusses and other elements.

Now you know how to calculate the cubic capacity of a log house or a log house. If you do NOT want to deal with complex calculations yourself, please contact our specialists! We will make a detailed estimate for you. This is a free service and does not obligate you to anything.

When ordering a house project from rounded logs, all lumber will be automatically calculated as accurately as possible.

Ready-made projects of houses and baths from "AZBUKA FOREST" are presented in ours.

For a quote, send your plan of your future home to

In the letter, indicate the desired diameter of the log, the estimated height of each floor, construction technology and other data that the manager needs to know in order to draw up an accurate estimate.

For many builders, the topic of calculating the number of logs in a cube is familiar. But for an unprepared person, this may seem not only very distant, but also incomprehensible. And very often there are disagreements between the builders themselves, as well as between the builders and the customer about how many logs should be in a cube.

In order to deal with this problem, a mathematical method is usually used, which in a few minutes can give a clear answer about how many logs are needed for a certain number of cubic meters.

As a rule, rounded logs are used in the construction of wooden buildings. But this material may differ in size, that is, in length and diameter. The unit of measurement is taken to be centimeters. There are one million centimeters in one cubic meter. Thus, first you need to decide on the size of the logs.

In order to measure the size of the logs, you will need a regular centimeter tape measure. All logs, as a rule, should initially be of the same size, and later, depending on the project, they are sawn into the necessary elements.

So, having measured the size of the log with a tape measure, we get the values ​​\u200b\u200bof the length and diameter in centimeters. For example, let's try to calculate how many logs are needed for one cubic meter if the logs are six meters long and eighteen centimeters in diameter.

The following formula is required for the calculation:

Volume = Pi * Radius * Radius * Length.

Six meters in this case equals six hundred centimeters. Pi is always 3.14. We get the radius by dividing the diameter by two. Thus, our formula takes the following form: Volume \u003d 3.14 * (18: 2) * (18: 2) * 600 \u003d 3.14 * 9 * 9 * 600 \u003d 152604 centimeters. To convert to cubic meters, divide the resulting number by one million: 152604: 1000000 = 0.1526. This result tells us that one log of this size will take up only 0.15 with a small cubic meter.

Now you need to figure out how many logs are in a meter. This is our main task. To do this, we will divide one cubic meter by the result of our calculations - 0.1526. It turns out: Quantity = 1: 0.1526 = 6.55 logs. It turns out that for one cubic meter we need to take about seven logs of a given size.

If we consider logs of a larger diameter, for example, twenty-four centimeters, then the calculation results will be different:

Volume = 3.14 * 12 * 12 * 600 = 271296 cubic centimeters = 0.2713 cubic meters.

This means that in one cubic meter there will be: 1: 0.2713 \u003d 3.69 logs. In this case, there will be fewer logs in one cubic meter.

To calculate the number of logs per cubic meter, a very simple formula is used, which allows you to calculate the result in a matter of minutes. For calculations, of course, it is better to arm yourself with a tape measure and a calculator.

The construction of wooden houses, cottages, bathhouses and gazebos is the specialization of our company. We entered the sphere of wooden housing construction in 1997, and since then we have been improving building technologies. We started selling building materials in 2003, presenting our customers the best products from the world's leading brands. In addition, we manufacture large-span structures in our own production. This allows us to implement various architectural ideas, whether it is a small one-story cottage or a huge five-story country house.

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• project development;
• manufacturing wooden materials;
• foundation construction;
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• installation of partitions, doors, windows;
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• Finishing work.

According to the same scheme, a turnkey bathhouse and other types of structures, both residential and public, are being built. As for materials, conifers are most valued for wooden buildings - pine, spruce, larch. Houses are built from logs or timber. Experts say that the production of glued laminated timber makes it possible to obtain high-quality, durable and reliable material, which has an acceptable cost.

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Turning to our company, you can order the construction of houses and baths, purchase quality materials and get expert advice. Any of your wishes will be implemented under the supervision of coordinators. You will be satisfied with cooperation with our company, and we will offer you best options, which are in the world of wooden housing construction.

From this article you will learn:

In order to calculate the number of logs for a log house, we need to know:
- The dimensions of the log house (take as an example a log house 3 by 6 five-walls - two walls of 6 meters each, three walls of 3 meters each - these are the dimensions at the ends of the logs)
- The height of the log house (in our example, take a height of 3 meters)
- The diameter of the log from which the felling is planned (in our example it is 30 cm)

What's next?
- We consider the total length of one crown (in our case, these are two walls of 6 meters each = 12 meters and three walls of 3 meters each = 9 meters, add up, and we get the total length of one crown 21 meters
- Find out how many crowns there will be in a log house (number of rows of logs in height) How to do this?
First we need to find out the working height of one log, we know that the height (diameter) of one log in our example is 30 cm, from this sum we need to subtract 3 cm per sample of the longitudinal groove (average), and we get the working height of one log = 27 cm Now we divide 3 meters of log height by the working height of one log, we get 11 crowns (rows in height)
- We count the number of logs for the log house. How to do it? We take the total length of one crown (row), in our example it is 21 meters, we multiply it by the number of crowns, in our example it is 11 pcs. we get 231 meters. This is the total length of all crowns. Now we divide the total length of all crowns by the length of one log - 6 meters, and we get 38.5 pieces, round up, and we get that for a log house 3 by 6 five-walls, 3 meters high, from a log of 30 diameter, we need 39 pieces

And so, now you and I know that we need 39 logs of the 30th diameter, but how many cubes are these? A table will help us with this - a cubic meter of roundwood, you will find it below the post.

Looking at the table, we saw that in one 6-meter log of the 30th diameter - 0.52 cubic meters (m3)
Now we simply multiply the total number of logs, in our example it is 39 pieces, by the cubic capacity from the table - 0.52 m3 and we get = 20.3 m3

Conclusion: For the construction of a log house 3 by 6 five-walls 3 meters high from a log of the 30th diameter, we need 39 logs, with a total cubic capacity of 20.3 m3

Above we have considered a simple and fast way calculation of the number of logs for a log house, but it has one drawback - inaccuracy in the calculation when it comes to complex log cabins, where residues of 1.2 meters, 1.8 meters, etc. can remain. which have nowhere else to put in a log house, such log cabins are more difficult to consider and much longer. Therefore, they can be counted according to the above technology, but adding 10-15% for scraps

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Calculation of cubic capacity of round wood
Table for calculating the cubic capacity of the forest: at the intersection of rows and columns, the volume of the forest in m3

Cubic capacity according to GOST 2708-75 according to the length of the log L and the diameter of the whips D. Using this table, you can determine the cubic capacity of round timber with a diameter of 14 cm to 48 cm and a length of 1 to 9 meters

How to use the roundwood cubature table?

Step 1. Find the log diameter you need in the leftmost row of this table.
IMPORTANT! The diameter of the log is measured at the crown, i.e. by smallest size

Step 3. Multiply the cubic capacity of the log by the quantity, and here you get the cubic capacity of the same diameter

Step 4. Add up all the sums of the cubature of each diameter, so you found out the total volume of the cubature of the round
forests

Example: You have loaded a total of 50 pieces of logs 6 meters long

1) We measure the diameter of each log and determine the number of logs of each diameter, it turned out:
- 15 pcs - 20 cm
- 10 pcs - 22 cm
- 20 pcs - 24 cm
- 5 pcs - 26 cm

2) We look at the cubic capacity of one log of each diameter in the table, taking into account the length of the log, we get:
- 20 cm - 0.23 m3
- 22 cm - 0.28 m3
- 24 cm - 0.33 m3
- 26 cm - 0.39 m3

3) We calculate the cubic capacity of each diameter by multiplying the number of logs of the same diameter by the indicator from the table for calculating the cubic capacity of roundwood (the table indicates the volume of the 1st log) It turned out:
- 20 cm (0.23 m3) * 15 pcs = 3.45 m3
- 22 cm (0.28 m3) * 10 pcs = 2.8 m3
- 24 cm (0.33 m3) * 20 pcs = 6.6 m3
- 26 cm (0.39 m3) * 5 pcs = 1.95 m3

4) We consider the total cubic capacity of all logs, by adding the indicators of the cubic capacity of each individual diameter, happened:
20 cm (3.45 m3) + 22 cm (2.8 m3) + 24 cm (6.6 m3) + 26 cm (1.95 m3) = 14.8 m3 - total cubic capacity of roundwood according to GOST 2708-75

It is worth adding that some roundwood suppliers do not count the diameters individually, but multiply the average diameter by the total amount of roundwood.....