What is a 2 mm steel sheet?
Roofs, awnings, canopies - where only a steel sheet 2 mm is not going, if you do not take into account the engineering industry. The metal profile is much better suited for the roof, but it is also somewhat more expensive, which means that you can take less convenient, but cheaper means to save the budget. Moreover, it is much easier to work with sheet steel.
Imagine a situation where you needed to install a canopy over the door, for which you have to cut a profile sheet, which measures 1250x3000 mm, from tools you only have a hacksaw for metal. Uncomfortable work is ahead, is not it? Another thing, if you need to saw a regular flat steel sheet, the dimensions of which can reach 1250x2500 millimeters.
What is convenient, regardless of the thickness of the steel sheet can be bent in any direction, which can not be required from corrugated metal. In other words, if you have a roof of a gazebo of complex shape, for example, you suddenly wanted to make a dome over it, it would be impossible to cover such a structure with tiles or the same profile.
In this situation, you can turn to flexible roofing, but they, unfortunately, can not be used in all climatic zones, while galvanized metal successfully resists external factors. However, you can use a two-millimeter hot-rolled or cold-rolled steel, it is not important, the main thing is that you know what to expect from it and how to handle it to protect against corrosion.
Weighting of the roof in favor of reliability - steel sheet 3 mm
The thicker the rolled metal that you want to use as a roof, the harder it will be, these are the normal laws of physics that can not be avoided anywhere. It should be remembered that even thin sheet galvanized steel with a thickness of half a millimeter and an area of 1 square meter weighs about 4 kilograms of .Based on this, it can be assumed that a 3 mm steel sheet for your roof will be a permanent test for strength.
This thickness can be considered only in cases where you make a hangar or garage, that is, a building with a metal frame. The usual wooden truss construction can also withstand a considerable weight, provided that you will be using beams of cross-section not less than 10x15 centimeters.
The ideal form of construction for thin sheet steel, the thickness of which exceeds 2 millimeters, is a semicircle in cross section, if you remember, it is this form that is often attached to aircraft hangars and some construction shops. Uniform distribution of the radial load on all elements of the frame contributes to the stability of the entire structure as a whole.
Sheet steel 1.5 mm - easy handling
The processing of sheet steel with all the necessary tools should not cause difficulties even for those who are faced with the need to perform such operations for the first time. Where it is more difficult to work with broadband metal rolling, the thickness of which can reach 60 millimeters or more. So, we need to get the roof as a result, which is covered with a sheet of steel 1.5 mm.
For this we need rulers and tape measure, metal dies, punch and thicknessers - this is just for marking. For cutting, you need a chair scissors and chisels, to change the profile you need a hammer, an edgebander or other tools for bending the edges( mites).You may also need a special hole punch for metal and a rivet. For additional processing, it is useful to have a set of files.
If bulges are visible on the sheet, they are straightened using hammers of different types, among which you can find a kyanku. In the presence of rust, it is recommended to use a special nozzle for a drill in the form of a metal brush .A ready-to-use sheet is marked with a ruler and a tape measure, all the markings are made with scribbling.
It should be remembered that the galvanized sheet becomes impervious to corrosion if the protective layer is broken, which means that all markings must be made on the back, bottom side of the roofing sheet.
Long cuts of the sheet are made with scissors, short can be done with a chisel, this process is called cutting of roofing steel. Sheet thickness of up to 1.5 millimeters is cut in one pass, more than 3 millimeters - for two or more.
This process is often used, if necessary, to cut a large hole, for example, for a chimney, for this, first cut a small area, which could pass the knife lever scissors. Then follows the drilling or perforating of the punch, and finally, the riveting of the roofing sheet. In general, all these processes do not cause complexity with a minimal skill in working with the listed tools.