Ceiling beams or ceiling logs are the supporting structure of the house, therefore, before you start to mount the floor logs in a log cabin of a house or a bath yourself, we strongly recommend that you be especially careful approach the choice of material And correctly calculate roof structure.

For the manufacture of floor lags, it is best to use dry, first-grade material impregnated with a fire-retardant composition.

Beams are most often embedded:

How to ensure the strength of floors and easy installation

Having previously marked the places for tie-in beams, cuts are made in the log and tight beams are inserted into them at a distance of about 600 mm from each other. Such a distance between the beams provides the necessary strength of the floors. Most types of insulation are produced exactly 600 mm wide, which provides convenient installation of heat and sound insulation. With this method of mounting the log, there is no need to attach them additionally to the wall.

Floor logs can also be mounted after assembling the log house, fixing them on the wall with special brackets and screws. The construction market now hasHuge variety of fasteners. But more correct reliable installation method - the first!

Questions arising during the construction process

During construction log house, log baths Naturally, questions arise: What section should be cut into the floor beams (floor, ceiling)? What load can wooden logs (beams) withstand? What is the maximum length of the beam possible for what section of the board, beam, log?

Based on the table below, it is easy to calculate the cross section of the log, depending on its length. The data are given for standard spans with a width of 2 to 6 meters, with a lag set frequency of 600 mm (the distance between the lags is 600 mm) The estimated load is 300 kg per 1 sq. meter. The table shows the breaking loads for these lags in kg per square meter.

Simply put, the numbers on a colored background are the load in kilograms per 1 m2, at which the ceiling will simply break. But in order for the floor not to "spring" there is also an indicator of the bending of the beam. Blue background - the floor will not "spring", yellow - the maximum allowable, and red background the floor will sag at a load of 300 kg more than the allowable norm.

Table for calculating the breaking load (kg / m2) on the logs (beams) of the floors of a log house.

blue color highlighted in the table values ​​with a margin of safety

in yellow values ​​are highlighted in the table maximum allowable for deflection of beams for these conditions

in red values ​​are highlighted inadmissible deflection(more than twice the allowable norm) of beams for these conditions.

Note: additional rigidity of the beam can also be given by splicing two or more boards in thickness.