The importance of fencing on the roof of the
During the operation of an administrative or residential building, it is often necessary to clean ventilation, install equipment, partially repair the roof, and without such a protective fence, such work is very dangerous. In its essence, it is a low fence, which consists of vertical racks connected by crossbeams on several levels.
The fencing device on the roof is carried out in accordance with the norms of SNiP.Fencing elements must be made of a reliable material and, of course, should not spoil the appearance of the building. All vertical racks have special fastening elements, which ensure reliable fixation of the whole structure on the roof.
Metal roofing is mainly made of stainless or galvanized structural steel, and there are also options from copper with a special coating. The choice of the metal from which the fence is made and the fastening system will depend on the material of the roofing and the type of roof. Roofing of galvanized metal, for example, will require the use of a steel fence.
Requirements for the fencing device
All roofs can be conditionally divided into two groups: operated and unexploited .From the type of the roof will depend on the requirements for a protective fence.
Any roof is characterized by the presence of a rigid foundation for the installation of roofing material, because there should be the possibility of a permanent exit of repairmen to the roof for maintenance or installation of equipment.
Roof fencing, GOST 25772-83, must meet the requirements for balcony fences, namely: with a building height of up to 30 meters, the height of the protective fence is 1100 mm, over 30 meters - 1200 mm. If it is installed on the parapet, its height will decrease by the height of the parapet. The step of vertical racks should not exceed 900 mm, and the crossbeams - 300 mm.
Unexploited roof does not provide people access to the roof, so it does not require a hard base. The height of the roof guard for this type of roof should be at least 600 mm, regardless of the number of floors or the height of the building. The maximum distance between the bars should also not exceed 300 mm.
How to properly mount fencing?
In addition to the selection of quality materials, it is very important that the fences are properly installed in compliance with all building codes and requirements. Fastening of a protection of a roof is carried out as follows. First, it is necessary to fix the vertical supports, which are screwed with galvanized screws to the support beam through the roof or mounted in the parapet. After that bolts fix the crossbeams. The places of fixing the protective guard to the base of the roof should be thoroughly treated with anti-corrosion agents, which prolongs the life of the entire structure, and the adjacent sections of the roof are equipped with special plugs.
Since barriers on the roof are designed to ensure the safety of people, both carrying out repair work on the roof, and located at the bottom, the installation should be carried out exclusively by professionals. From time to time, inspection of fences should be carried out for strength and reliability.