In addition, according to the General Principles for the Design of Civil Buildings, if steps are set in crowded places, and the height of the steps needs to exceed 0.70m and the side faces the air, there should be protective facilities. Outdoor steps are composed of platforms and steps. The platform surface should be about 500mm wider than both sides of the doorway, 20~50mm lower than the indoor terrace, and the slope of outward drainage is about 1%.
Structure and paving technology of outdoor step stone steps
Stone steps are made of natural stone as building materials, cut and polished with stone and concrete, and are first-class buildings for people to go up and down, mostly in front of the gate or on the ramp. The disadvantage is that the stone is rough and lacks detailed aesthetic function. Stones are piled up, and the joints are unprotected, so they are often covered with weeds, insects and microorganisms.
Mechanics requires reasonable stress, stable structure and moderate strength. The function requires that the steps should be suitable in height, suitable for walking and climbing, and wide. The steps are smooth and smooth, and there is no looseness, and there is no hidden danger of honey. The stepped surface has strong weather resistance, which can resist the erosion of wind, frost, rain, snow and various fine organisms in nature. The appearance effect of stone steps should pay attention to color, luminosity, texture and cleanliness.
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