3. Walls: walls and columns are vertical load-bearing components, which support the roof, floor, etc., and pass the load on to the foundation. The function of wall: 1) bearing weight; 2) maintenance; 3) separation; 4) decoration. The requirements of the wall: 1) have sufficient strength and stability; 2) to meet the performance of thermal workers (insulation, insulation, and prevent condensate); 3) it has certain sound isolation performance; 4) have certain fire resistance performance.
According to the tourism industry in China market in 2015-2020 strategic planning of foresight and investment analysis report preview ", according to data by the end of 2011, the total of all kinds of tourist scenic spot, 20976, among them, 5573 a-class tourist scenic spot. Tourist attractions have become one of the hot spots of residents' tourism consumption. In 2011, the number of tourists in the national level A tourist attraction was 25.54 billion, with the average person visiting the scenic spot about 2 times. Revenue reached 2658.6 billion yuan, and the share of total tourism revenue in the country was increasing. Scale and comprehensive 2011 national scenic spots for tourists more than 20% revenue growth, growth is significantly higher than the same period the hotel and travel agency industry, the subject status of the scenic spots to further strengthen.