As a pool design and construction expert with over a decade of experience in the industry, I have seen a wide variety of pool sizes and shapes. The "standard" size of a pool can vary greatly depending on the intended use, available space, and personal preferences of the homeowner. However, I can provide some general guidelines based on common pool dimensions and the information you've provided.

In the United States, the most common residential pool shape is the rectangular pool. As you mentioned, these pools are often designed to be about twice as long as they are wide, which provides ample space for swimming laps and recreational use. The average depth of a pool is indeed around 5.5 feet, but this can vary from a shallow end of 3 to 4 feet to a deep end of 8 to 12 feet, or more, depending on the specific design and the needs of the users.

The dimensions you've listed—10 x 20, 15 x 30, and 20 x 40 feet—are indeed typical for residential pools. A 10 x 20 foot pool is considered small and is often used for small yards or as a plunge pool for relaxation and cooling off. A 15 x 30 foot pool is a popular size for families, offering enough space for swimming and playing without taking up too much yard space. A 20 x 40 foot pool is larger and is more suitable for those who enjoy swimming laps or have a larger property.

It's important to note that these are just averages and starting points. Many factors can influence the final size of a pool, including the shape (oval, kidney, freeform, etc.), the presence of features like waterslides or diving boards, and the layout of the surrounding landscaping and patio area.

When designing a pool, it's crucial to consider the functionality and aesthetics you desire, as well as the practical aspects such as cost, maintenance, and the impact on your property's value. A professional pool designer or contractor can help you determine the best size and shape for your specific situation.

Now, let's move on to the translation of the above response.

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For most rectangular pools are about twice as long on one side as they are on the other, with an average depth of around 5.5 feet. Typical swimming pool dimensions are 10 x 20, 15 x 30, and 20 x 40.Feb 6, 2016read more >>