According to geomantic omen, the odd number is Yang and the even number is Yin. In addition, it is also related to the good or ill luck of the steps. Generally speaking, the words "life, honor, death and despair" are the most important, and the words "life" or "honor" should be used in one step, avoiding the words "death" and "despair".
Because in ancient China folklore, odd numbers were regarded as positive numbers and even numbers as negative numbers. The sky is sunny and the earth is cloudy, so people are lucky in the singular. People are lucky to avoid evil spirits, so in order to have good home feng shui, odd numbers of stairs are also required.
But in reality, whether the number of stairs is odd or even is not so particular. The current building code only requires many specific dimensions such as stair tread height, and there is a scope or lower limit. In general, the height of steps should not exceed 180mm, and specific building types have their own requirements.
Details needing attention in stair design
1. Stairs are mainly used for people to pass through the above-ground and underground spaces smoothly. Therefore, the layout must be designed according to a reasonable structure. Generally, each stair step should be 15cm high and 28cm wide. To make the stairs design easy, it is necessary to know and master the dimensions in detail. According to the actual situation, the height of the steps should exceed 18cm and the width should exceed 22cm.
2. From the perspective of aesthetics and architectural art, stairs are the key point, which also shows the unique taste of the owner. At present, it is mainly used for straight stairs, giving people a casual taste; Some families prefer to design curved stairs, which are not as rigid as straight stairs at the corner and are more comfortable to walk. There are spiral stairs, which occupy less space, and the spiral upward trend fascinates many people.