Perforated lockers are similar to the standard types of locker, but the door and walls are made largely or entirely of perforated steel, with hundreds of holes creating a strong mesh arranged in a diagonal pattern. This is used where good ventilation is required, or where, for security reasons, it is necessary that the contents can be examined visually while the doors are locked.
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Division 10 — Specialties Lockers: Division 10 — Specialties is a category within the National Master Specification (NMS) set of guidelines developed by Public Works and Government Services Canada. Division 10 — Specialties items that could be required within a locker room (to meet commercial building and construction regulations) are lockers, washroom accessories, toilet compartments, and toilet partitions. Lockers are constructed of two sides: a back, top and a bottom. Different types of materials are used in locker manufacturing, offering a wide variety of metal lockers, stainless steel lockers, solid plastic lockers, solid phenolic lockers, and custom lockers. A padlock is the most common way to lock a locker; however, you can also use a keyed cylinder lock, built in combination locks or keypad locks. There are a lot of optional extras that can be utilized for lockers, for example: bases, sloping tops, end panels, customized shelves and hooks as well as the locking method (coin-operated lockers are another option). The environment is the best way to distinguish what type of locker will be required for which type of space. For example, if you are putting gym lockers into a humid area, or anywhere close to showers, stainless steel or solid plastic lockers would be most suitable because they are moisture-resistant and rust-resistant. Wood lockers would not be appropriate for this type of environment because the moisture from the humidity would rot the wood.
Steel thickness: lockers tend to be made from a standard thickness of steel, which is commonly 0.8 mm. thick; but heavy-duty or high-security lockers are offered as a standard option by some manufacturers, or may be available on special order. A typical locker of this sort may be constructed from steel 1.2 mm. thick, for example, and is usually fitted with three-point locking, regardless of the number of tiers.
Don't count on finding this kind of thing. Some silly people put bombs in there. Our Homeland Security people try to head those things off. In Europe, especially GB, you can't even find a trash can on the sidewalks for the same reason. A worker at the train station told us to just throw it on the floor, the people in the green jackets will pick it up. Really. What a world we live in.
In schools without lockers, students are sometimes provided with two complete sets of textbooks, one set being kept at school for use in class, and the other being kept at home for referring to for homework, thus limiting the amount of heavy carrying that would otherwise be required without having lockers to store them in between classes. However, research has shown an increase in the incidence of back injuries in some students, which has been directly attributed to the lack of lockers for storing books in, thus forcing students to spend more time carrying heavy loads of books in backpacks.