Research steel grating selection and economic
Steel grating with provincial steel, corrosion-resistant construction fast, neat, non-slip, ventilation, no dents, no water, no dust, no maintenance, service life of more than 30 years, etc., are increasingly widely used in the construction unit . Many design units to promote the overall economic efficiency of this material made a lot of good work, but in promoting the use of the process also encountered some problems, such as designers face the variety of steel grating specifications do not know what a good choice, while construction Units think the design chosen product price is too high. Discovered through years of design work, as long as the specifications do economically rational selection, safe and reliable, you can put down the total cost to achieve the purpose of saving the steel and investment.
Grating Selection
First, when the selection is determined according to the conditions of the surface coating selection,
steel grating surface can be divided into hot-dipped sharply, painting, or no treatment. Such as petrochemical companies in steel grating conditions of use mostly for outdoor or corrosive atmosphere of the occasion, the media, etc., so most choose galvanized surface, the advantage of this choice is a solid layer of corrosion-resistant galvanized steel, at least 30 years of life, free maintenance.
Followed by the option board type, such as petrochemical enterprises conditions, live load 2kN/m2, overhaul load 2kN/m2, secondary beam spacing 1000-1400mm,
stair treads, steel platforms generally use G253/30/100, G255/30 / 100, G323/30/100, G325/30/100 flat type flat steel grating, ditch cover, the higher the aisle width requirements, trestle generally use G405/30/100, G405/30/50, G505/30 / 100, G605/30/100 flat type flat steel grating, a few important occasions can be stainless steel or aluminum and other metal products, steel grating.
Economic Performance
Designers tend to worry about whether the selected material can be accepted as a construction unit, construction unit also worried that the design and materials selected whether the economy, whether provincial investment, which is contradictory to find a reasonable balance between the selection of designers, make contradictory mutual satisfaction. Using steel grating installation is very simple, fixed with bolts or welding, simple to install, fast. The basic need for future maintenance, overall economic efficiency is obvious.
Steel grating is mechanized production line at the factory, high degree of automation, quality assurance. With economic development and improve the management level of production will be more and more steel components in factory production, on-site assembly is the trend of development, but also as the foreign component in the factory production, reduce the workload of the scene, which is conducive to shorten the construction period of construction, commissioning day earlier, as early as one day to see the benefits, the construction unit has become an issue of utmost concern. using steel grating which reduces the investment, but also shorten the construction period, but some are reluctant to accept construction and construction units, study The reasons are:
(1) the designer does not combine our country, not economic when selecting models.
(2) the beginning of the high price of steel grating, when any new product has just come out, the price is always higher than its maturity, with the expansion of the scale of the cost of recovery and the price will be gradually reduced energy for most the degree of customer acceptance, which is the objective laws of the market economy.
(3)Traditions view construction unit, the use of units. Some believe that the use of units have weatherproof performance tread plate that has a mesh steel grating due, not rain, things may fall hurt, but reality is not such a problem occurred, most cases do not require steel decking function with rain.
When in reality there is no perfect thing, any kind of product in the past to overcome the shortcomings of the product, will produce new defects, if the new products and more advantages than the old product, less shortcomings, we should overcome the inherent concept in mind, to accept new things. It appears that the popularization of steel grating, the need to change the way people's minds the habit of thinking.
In summary, the designer must adapt to the market economy, the behavior of his design work has not in the past planned economy to only focus on technical problems, but according to market economic laws, he must consider the interests of users, the design must be made Let users think economical, depending on the circumstances, the performance analysis and comparison of selected material, and ultimately determine a reasonable structure, safe, economical and good models.
Platform ladders treads tower design requirements
Tower platform ladders end treads must sided fully welded side panels, flat load edging in the same direction with each board must root bar welded steel ladder treads edging frontier guards if necessary throughout still. Single pass his uniform load capacity of not less than 3.0 kN/m2.
Precautions
Due to the special nature of the tower device platforms, many are some of profiled steel grating steel grating, for future installation goes well, we should pay attention to those matters in production during transport it?
First, the design. The designer should be based on the tower platform steel grating use environment to design, different humidity, different temperatures, different installation address will affect them.
Second, pay attention to the direction and size of the force platform tower angle steel grating steel grating. If the phenomenon is not installed on the steel grating direction of the force and angle of deviation, then appeared in the late installation.
Third, in transit. Because the tower platform steel grating Unlike standard
steel grating as the rules, there will be placed in transit problem occurs if you put a bad collision, friction is likely to cause inconvenience to the latter part of the installation.
Fourth, pay attention to post-maintenance. Tower platform steel grating after installation and use, it should be noted that maintenance and repair, so you can extend the life of steel grating.
