The Construction-related Companies/Organizations in China and the United States

Q25-Data count:74
Based on those charts' illustrations, what number of renovation projects did you manage that did not recycle any portion of the demolition waste in the past five years?
Analysis
In the past five years, the construction-related companies/organizations in China and the United States have carried out recycling materials and building renovation projects at an average of 2.59 projects and 1.79 projects, respectively. The standard deviation and variance range around one according to our analysis. However, few building renovation projects in China and the United States include recycling material because it is at the initial stage and has not developed much.
Q11-
Data count: 70.
Based on those charts above, what are the different materials recycled during the demolition portion of a typical construction renovation/ demolition project in the last ten years?
Analysis
According to the mean value, the different types of recycling materials in building and renovation/demolition projects by construction-related companies in China and the United States are 5.14 and 4.97, respectively. Construction-related companies recycle and apply recycling materials in similar quantities and are all close to 5 different types of recycling materials.
In addition, according to the variance value, the data of Chinese construction companies is 11.68, and for American construction companies is 8.03. The distribution of data points of averages is relatively scattered, which shows that different construction-related companies in different projects are essential for identifying different types of recyclables. The decomposition technology of materials is quite different. Furthermore, it also shows that the awareness and practice of recycling materials in the construction field are uneven.
Q14-Data count:74
The yellow areas are the most accessible materials to recycle from the above two charts, and the green areas are the hardest to recycle.
According to the data comparison of construction-related companies in China and the United States, they all believe that flooring materials, drywall, bathtub materials, and countertops are all materials that are difficult to recycle. However, the opinions on the recycling proportion of concrete and windows are different.
1. The different recycling proport...