091014 some business knowledge in the construction field

Today, huaming told me and the two new employees about the construction field, mainly about indicators.
During the lecture, I made some notes as follows:
1. engineering priceAlgorithmThere are four types: Estimation, budget estimate, and settlement.
2. Project Division, Statistics, and other construction activities are divided by tree structure as follows:
Engineering
Single item
Unit
Sub-item
List (human machine and other attributes)
Quota (HR machine and other attributes)
The unit I understand is a small enough unit that can be directly constructed and budgeted.
The last three levels are defined in the division method. That is to say, all unit indicators are divided into sub-items, lists, quotas, and so on. However, the organization and above are not limited to Level 3. According to different buildings, this Division is the division of human nature, which can be divided into sub-items below.
(Is it a bit like managing folders? Hey. In fact, the methodology should be consistent with software and work. I will summarize it later .)