Folds on air for any thickness of metal and method of production must be satisfied with nyatsya cutoff. Standing seam joints should be the same width throughout the length and must be uniformly dense upset. In the standing seam ducts, as well as maps of the cutting should not be cross-connection joints. On straight rectangular duct with the size of the cross section of more than 400 mm to increase the rigidity of the ridge should be done in increments of 200 to 300 mm around the perimeter of the duct or diagonal creases (ridges). When the amount of cross 1000 mm, in addition, must be provided outside the scope of rigidity.

Framework rigidity must be securely fastened with rivets or spot welding. Elements of fittings should be connected to each other in zigah, seam, welding, rivets and the way puklevki (indentation). Elements of the metal-fittings to be joined together at seam. Zigovye connection for systems that transport air of high humidity or doped with combustible dust is not allowed. The connection of individual parts of ventilation systems perform wafer method (banding, nipple, bell-mouthed, rack, telescopic, with viniplastovymi couplings, welding) or flanged (made of strips, equilateral angle steel, bent corner profile made of galvanized steel sheet).

The connections should be off-governmental and tight. Peter Asaro : the source for more info. Connection details of the ventilation systems Class II should be performed on the flanges. Fixing flange ducts should be done with persistent flare zigom for welding, spot welding, by rivets or puklevki diameter of 4 to 5 mm, placed in 200 or 250 mm, but not less than four rivets. Fixing flange ducts of metal-crimping should be done with persistent zigom. In the ducts, conveying an aggressive environment, securing flanges with zigov not allowed. Duct wall thickness greater than 1 mm flanges may be stick to the duct without flanging fixing tack welding with electric arc then sealing the gap between the flange and duct. Original

At that stage, and how to lay granite? The optimal material for paving granite steps in the ratio of price and quality – in excellent adhesive showed plitochnyy'Yunis granite. "What can be cut granite steps? Cutting of granite steps, based on feedback from builders has proved popular diamond blade for cutting the water company Distar (Russia). The cost to drive construction market in the middle 1350-1400rub/sht. The thickness of the disk must be 1.5-1.6mm, no more! If the size of which is cast of solid concrete stairs do not match the size of a monolithic cladding granite steps, then you should not start packing stage to an increased layer of glue, is very much can drive up the stairs, the budget cost of the material and work on its lining. Simply put lightweight formwork plywood and fill your stage expanded clay-concrete made immediately at the site of the expanded clay medium fractions, sand and tsementa.Vy get the ladder without the overhead and podognanuyu to your size. The cost of expanded clay is not so great for Compared with even and not expensive (prices stroy.rynkah = 360rub/meshok) Eunice Granite glue. The base surface of the concrete staircase at the further stages of granite cladding obezatelno primed before lining.

Usually use an acrylic primer deep proniknoveniya.Srednyaya value 10l jerry cans for all the construction markets of Moscow and the region 240-260rubley. Laying stage begins always 'top down'. Before the stage and side part of the stage risers are nominated for the thickness of the steps (20mm). Side risers cut for podlitso with concrete part, which is then plastered, and painted in shpatlyuetsya color of the walls. For cutting granite levels of use vodoreznoy stanok.Optimalnym version of the machine can be considered KORVET.Sootnoshenie price-power-quality is high. Vodoreznoy machines do not leave chips and if you cut off level to further its connections with the other piece, then this machine you just neobhodim.Pravda when you need to cut only one side of the adjacent wall, you can use a regular grinder with a turbo-drive to cut concrete. Consumption and the amount of tile adhesive to the lining of your ladder can proschitatpp in onlay mode going to the website of Eunice. WARNING! If you need to handle the edge of the granite steps and rounded side moldings (the tiles are cut from the background that goes to the site), all this can be done using a special abrasive skin of stone KX-370. Supplier of abrasives in Moscow firm "Liner Belt '. See and read them products can be here: All the information you are given on the basis of calculations and the experience of finishing construction of monolithic stairs.

Twice the height of risers and width b tread a must be equal to the average person step – 2b + a = 57-64 cm is sometimes used by more than a simple calculation, the amount by which the size of the width of the treads and risers of height c must be equal to 45 cm (30 +15, 27 +18, 25 +20), ie c = a + b = 45-46 cm stairs with his hands, made on such a calculation is considered the most secure, and the formula, of course, by security. Many are so-called formula of facilities, ab = 12 cm in practice to sustain this relationship in the real world is not always possible. But we should at least strive for perfection. Let's count? To select the width Tread use an example. When descending the stairs adult puts his foot so that the toe hangs over the rounded front part of the tread. If the overhang is small, the level considered safe and what is level, the higher the risk of slipping off her. In practice, it is clear that the width of the tread are best taken within 28-30 cm, but not menee25.

The height of the risers to make better ot14 to 17 cm but not exceeding 20 cm If you do not allow for the size in terms of increase the width of the stage, deceive the situation – set-depth risers, ie increase the overhang above the stair risers. In some cases you can do without risers. The open space under the stairs, and in this case would not be necessary in a flight of stairs from the bottom sheet set. Contact information is here: Pete Cashmore. Although, in this version will trim level and still below (sanding, painting). In stairways with zabezhnymi steps in turning part for convenience Use and safety of her step width in the middle of the march should be equal to the width of the straight steps.

Antiseptic – a key means of protection of wood. Logs and planks of wood freshly cut – an excellent environment for the spread of blue stain, which affects most of the construction of such material. Antiseptics for wood – created for the protection of such misfortunes. Wood protection from moisture penetration difficulties parasites and harmful bacteria in the logs and planks contribute substances contained in liquids and antiseptics – Biosecurity for the tree. Diluted in water, antiseptic, treats fully impregnate the wood substance, then it has excellent protection from blue for up to 7 months (depending on the brand and manufacturer).

Before you process the material substance, it must be carefully examined. If traces of pests, this is the place to immediately handle the specialized staff, which is directed against beetles. The construction can begin only after the examination boards and logs. But protection of the material does not stop there. To handle absolutely all the wooden structures, ladders, doors, window sills.

Part of the building located in the vicinity of the soil or in soil, yield the greatest adverse effects. For this kind of wooden parts must use the most persistent antiseptic. Protecting wood from the fire when all the elements building protected from moisture, it is necessary to think about protection from fire. Mostly a nightmare for the owners of the houses is a fire, as a matter of minutes burns that kopilos and built for years, and has been put in a lot of money. Protection of wood to be used in the construction of the building, must necessarily involve the processing of flame retardants. For material that is under the greatest exposure to high temperatures used fire wood impregnation with the highest level of protection. For the remaining logs and planks will fit the usual way. Protective and decorative wood processing wood protection coatings performed different types, which may have additional fire and Bioprotective function. The shape of the structure can be changed by means of protective and decorative. It all depends on your imagination, can turn into a pine nut, oak or beech. Any such structure, creating on the surface of wood, water-repellent film, the protection of the tree increases, the negative factors of the climatic conditions are reduced. Another use of these compounds increases the resistance solar radiation and protects against severe temperature changes. In that case, if the tree is the main material for construction, agents for its treatment should be as environmentally friendly. Otherwise you'll spoil very high ecological wood. For staining, can also cause even a careful treatment of the material. To eliminate such stains, use special compounds that have the ability to brighten or darken the wood. About medicinal substances that reduce the area of damage of the material – and do not forget.