A restaurant compartment that can hold a table for 20 people may be 20 to 30 square meters in size.
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20 people round table size is 3500mm in diameter, in general small and medium-sized residential, such as a round table with a diameter of 1200mm, often too large, can be customized a diameter of 1140mm round table, can also sit 8-9 people, but looks more spacious space;
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If you use a round table with a diameter of more than 900mm, although you can sit more than one person, you should not place too many fixed chairs. If the diameter of 1200mm round table, put 8 chairs, it is very crowded, can put 4-6 chairs.
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Calculate the diameter of a round table of 20 people. If each of us is about 0.45 meters wide, 0.45 meters x 20 equals 9 meters. Because the circumference of a circle is equal to the diameter times the magnitude, which is equal to 3.14. So 9÷3.14 is about 2.9 meters. So the diameter of a cylindrical table for 20 people is 2.9 meters. Then put a chair around the cylinder, and the depth of the chair is 70 centimeters, which is 1.4 meters, saying 2.9 meters 1.4 meters =4.3 meters. Therefore, a private dining room with a round table for 20 people should be at least 4.3 meters by 4.3 meters.
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20 people table size Table height: 750-790mm dining chair height: 450-500mm, the back of the seat should be straight or 2°-3° oblique round table size: diameter of 3500-4500mm square table is generally not used.
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For a table size of 20 people, according to the standard of 70 centimeters per person, the table for 20 people needs 20 times 0.7 equals 14 meters, which is the circumference of the table, and then 14 meters divided by 3.14 meters equals 4.46 meters. In addition, when choosing the table, you can choose according to the material, style, size, and choose your own suitable table.
According to your situation, let me answer the question you raised, if 20 people have to eat at the same time, how big does the restaurant need to be?
According to my personal experience, the area of the venue for 20 people to eat at the same time should be at least 35 to 45 square meters because the table needs to be set, 4 to 6 tables for 4 to 6 people