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Architectural GratesMany architectural applications for grates utilize the added traction created by these textures. The slip-resistance is important to floor gratings as are the perforations that allow liquids and other debris to pass through, thereby clearing the floor of any hazards. In addition to flooring applications, architects take advantage of gratings in several ways using them for louvers, ventilated partitions, sunshades, drains, fencing, ornamental screens, tree grates, building facades, handicap accessible walkways and even signage. Many manufacturing industries and plants are designed with gratings. Water intake, food processing, petrochemical, pulp, paper, mining, utility, construction and fabrication plants name just a few of the architectural applications for grates and screens. Commercial and domestic environments also make use of grates in many of the same ways. While many of these functions are purpose driven, grates are also used for decorative purposes and quite often have the dual function of being both aesthetic and useful. The diversity of grating has made its use a popular and even cost effective solution to many industrial, commercial and domestic building design challenges. There are two predominant methods for metal grate forming. Expansion metal grates are created when metal is slit and then expanded through heat and pressing techniques. This option is popular as it generates minimal waste. Alternatively, punch presses are used to knock out hole patterns in metal sheets. Common metals for either method of fabrication include stainless steel, iron, brass and sometimes aluminum. A variety of finishes such as enamel or epoxy coating, polishing and oxidation are available to reinforce aesthetic and functional capabilities of these materials. Fiberglass reinforced plastic bars and fiberglass gratings are produced by weaving continuous strands of fiberglass through thermosetting plastics before cooling. The many materials utilized can be formed into a variety of shapes, sizes and designs based upon specific needs. Along with these, the size of perforations or gaps between the grate bars is one of the most important considerations. This determines what may pass through the grate, for example water or debris, while also having a significant impact on visibility for both interior and exterior applications. Architectural gratings are incorporated in the design, planning, engineering, fabrication and installation stages of construction for both buildings and outdoor venues.
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