Construction of furnaces not exceeding 750 kg is allowed on the floor, provided that it is strong enough and the board do not bend when walking. But it is better to build furnaces to separate them for the foundation. Construction stoves weighing over 750 kg necessarily require a separate device a solid foundation. If the soil moist, you should use a brick, iron ore, as usual brick can deteriorate from moisture. Part of the foundation, located in raw ground, can be laid out on the rubble of 150-250 mm above ground level, align it, have a waterproof and the rest of the place of bricks. From these materials build foundations for smoke truby.Razmery foundations in terms of wider base of the oven for at least 5 cm in size all storony.Po basement dug a pit whose depth depends on the density of the soil. With its strong enough soil depth can be from 0.2 to 0.5 m.Dno pit level up, and If the soil is weak, then it is compacted heavy tamper.
Only then will proceed to the masonry. The first row of broken do (small) dry stone or brick, that is, without mortar, sealing it blows compaction. Thoroughly compacted stones poured grout (pryskom). After that, begin laying the main, using mortar of 1:3-1:6. To save the cement used complex or mixed solutions. Under their foundations are in ratio of 1:2:8 or 1:1:9, that is one part of cement take one to two parts lime putty and eight or nine parts sand.