The teacher has specially sorted out some memory and learning methods for you.
2.
For example, the knowledge points are too complex to remember.
embankment slope D.
The test scores range from 2 to 6.
In a twinkling of an eye, it has come to 2022.
03 key points of subgrade compaction construction (click to enlarge the picture) do you understand? Let’s do some exercises to consolidate and practice.
In fact, don’t worry about these.
For the filled subgrade, the filling section shall be leveled in advance.
For the subgrade test section, the correct ones are ().
How do we all remember? Quickly collect it and consolidate it regularly.
I believe students should have a certain understanding of the learning of builders.
B.
C.
1:3 (click the blank space below to see the answer analysis) [reference answer] C [analysis] the filling section shall be leveled in advance.
3.
A.
Width (click the blank space below to see the answer analysis) [reference answer] B [analysis] inspection and acceptance items of urban road subgrade: the main control items are compactness and deflection value, and the general items include the allowable deviation of subgrade, roadbed, embankment slope and other requirements.
A．1：4 B．1：6C．1：5 D.
2) Reasonably select compaction machines and tools; The selection of compaction machines and tools shall comprehensively consider different grades of roads, geological conditions, quantities, construction period requirements, working environment, etc.
Hello, students ~ time flies.
5) The compaction method shall be selected according to the soil type, humidity, equipment and site conditions.
Students must pay attention to it ~ don’t say much.
Compactness C.
Start today’s study ~ 01 key points of subgrade construction (the picture can be clicked to enlarge) 02 main control items of quality inspection and acceptance: compactness and deflection value.
Fill and compact in layers according to the survey center line pile and downhill toe pile.
When the ground slope is steeper than (), it shall be built into a step form.
This knowledge point involves answering cases.
In the following urban road subgrade construction quality acceptance, the main control items are ().
3) Press the compactness requirements and determine the compaction times.
The test section may not be built for the stone filled subgrade.
After class exercise 1 The top surface of pipe culvert within the filling height can be rolled by road roller only when the filling is more than () mm.
the virtual paving thickness of each layer shall be determined through the test section.
Today we will learn the foundation of road – subgrade construction.
4.
4) Determine the virtual paving thickness of each layer within the subgrade width.
When the ground slope is steeper than 1:5, it shall be built into a step form.
the filler strength value shall be obtained through the test section (click the blank below to see the answer analysis) [[reference answer] CD [analysis] (2) the main purposes of the test are: 1) to determine the subgrade pre settlement value.
Flatness B.
the subgrade pre settlement value shall be determined through the test section.
E.
600 (click the blank space below to view the answer analysis) [reference answer] C [analysis] the top surface of pipe culvert within the filling height can be rolled by road roller only if the filling is more than 500mm.
You may encounter various problems in your study.
The height of each step shall not be greater than 30cm and the width shall not be less than 1.0m.
A．300 B．400C．500 D.
the test section shall be excavated after the construction is completed.
D.
A.
All the students who have learned it are watching the clock ~..
