Food preparation is greatly related to the kitchen lay out, the equipment, the utensils, and other items in it. Every kitchen is made up of three main activity centers: The storage and preparation center, The cooking center, and The clean-up or washing center. The work involved in all three is so interrelated that these must not be too widely separated but must form a compact work unit. An effective use of the kitchen space and equipment is achieved when range, sink, and refrigerator are fairly close to each other, with sufficient working surface and storage cabinets interspersed among them. THE WORK TRIANGLE Situating the three main activity centers in convenient work triangle is essential to achieve a workable kitchen. The following distances are recommended:: Sink to refrigerator -4 feet to 7 feet Range to refrigerator—4 feet to 9 feet Sink to range- 4 feet to 6 feet Total triangle perimeter- 12 feet to 22 feet To achieve maximum efficiency with the work triangle factors, the following four basic arrangement are recommended by kitchen planners: The U-shaped kitchen The U-shaped kitchen is generally considered the most efficient arrangement. The three major advantages: 1. Traffic crossing the basic work triangle is prevented 2. A continuous counter area exists 3. Distances between appliances are short. The L-shaped kitchen In the L-shaped kitchen, the work centers are placed along two adjacent walls. A natural eating corner is created without sacrificing space from the work area. An easy flow of work from refrigerator to sink to range is possible in this arrangement of work centers. The island kitchen The island Kitchen is usually a modified U-shaped or L-shaped arrangement of activity centers. An excellent use of the island is as a cooking or mixing center. The addition of a chopping-blocktop and a utensil-hanging-rack makes the design of the kitchen island attractive. The Corridor kitchen The corridor Kitchen is the simplest and most economical arrangement. The corridor must be at least four feet wide and should have a dead end to prevent traffic through the work triangle.