What is the difference between a profile and a cross section?
A profile represents a straight line through the point cloud between two points, which gives as result the 3D representation of the point cloud along that line. A cross section represents a perpendicular line on a path, which gives as result the 3D representation of the point cloud along that section.
What is the difference between a river cross profile and channel cross-profile?
River cross profiles show you a cross-section, taken sideways, of a river’s channel and/or valley at certain points in the river’s course. A channel cross-profile only includes the river whereas a valley cross-profile includes the channel, the valley floor and the sides of the valley. How and why does a channel cross-profile change downstream?
What is a cross section in civil engineering?
The term cross-section generally refers to a relatively short profile view of the ground, which is drawn perpendicular to the route centerline of a highway or other types of linear projects.
What is a cross section on a topographic map?
A topographic map is a flat map representing elevations with contour lines. These contour lines connect locations with the same altitude above sea level. A cross-section is a side-on profile of a specific line that we want to draw on the map.
What is an example of a cross-section?
A cross-section is a shape that is yielded from a solid (eg. cone, cylinder, sphere) when cut by a plane. For example, a cylinder-shaped object is cut by a plane parallel to its base; then the resultant cross-section will be a circle.
What does cross sectioned mean?
1. : a view or drawing that shows what the inside of something looks like after a cut has been made across it. [count] a detailed cross section of the human brain.
How do you create a cross-sectional profile?
Take a thin strip of paper and place it along the transect line on the map. ... On a piece of graph paper, draw the horizontal axis of your graph exactly the same length as the transect A-B. ... Draw two vertical axes using a suitable scale. ... Place the strip of paper along the x-axis at the bottom of your graph.More items...
What is a cross-section of a structure?
A structural cross section is made to show the shape of a geological structure so as to evaluate the relationship of fluid contacts and compartments to that structure. Such features as spill points, rollover on faults, and fault geometry give an indication of the likely limits of field production.
What are the 3 different types of cross-sections?
Depending on the orientation of the plane that cuts the object, we can have three types of cross-sections: Horizontal cross section. Vertical cross section. Inclined cross section.
What is another word for cross section?
In this page you can discover 14 synonyms, antonyms, idiomatic expressions, and related words for cross-section, like: transversion, transection, cross-sectional, parallelepiped, proportion, random-sample, sample, sampling, barn, semicircle and subimages.
What is a cross-section in topography?
A topographic map is a flat map representing elevations with contour lines. These contour lines connect locations with the same altitude above sea level. A cross-section is a side-on profile of a specific line that we want to draw on the map.
How do you find the cross-section of a shape?
1:133:45Cross Sections - YouTubeYouTubeStart of suggested clipEnd of suggested clipFigure for instance if you are given a square. And you rotate the square about the y-axis orMoreFigure for instance if you are given a square. And you rotate the square about the y-axis or vertical axis you will create a cylinder.
How do you create a cross-section from a geological map?
Select a section line.Construct a topographic profile along the line of section.Transfer contacts from the map to the topographic profile.Project dip data into the cross section line.Calculate and plot apparent dips on the topographic profile.Construct the subsurface interpretation.
What is the purpose of cross section in construction?
Cross sections are a slice taken vertically through a given point along the building. They are generally drawn to a bigger scale than floor plans and elevations so that more detail can be shown. Cross sections indicate the type of structural materials that are incorporated into the construction.
Why is a cross section important civil engineering?
Apart from structural aspects, the cross-sections of beams and columns also affect the planning and construction aspects of an engineering project. In planning context, they affect the space utilization, visibility, lateral clearance, water flow, wind resistance, aesthetics, etc.
What is a cross-sectional design in research?
Cross-sectional study design is a type of observational study design. In a cross-sectional study, the investigator measures the outcome and the exposures in the study participants at the same time.
What does cross section area mean?
The cross-sectional area is the area of a two-dimensional shape that is obtained when a three-dimensional object - such as a cylinder - is sliced perpendicular to some specified axis at a point. For example, the cross-section of a cylinder - when sliced parallel to its base - is a circle.
What do you mean cross-sectional?
A cross-sectional study is a type of research design in which you collect data from many different individuals at a single point in time. In cross-sectional research, you observe variables without influencing them.
What does cross-sectional mean in psychology?
A cross-sectional study looks at data at a single point in time. The participants in this type of study are selected based on particular variables of interest. Cross-sectional studies are often used in developmental psychology, but this method is also used in many other areas, including social science and education.
What is the purpose of A cross-sectional drawing?
These enable you to slice through buildings, walls, stair framing or other details and give an accurate depiction of materials and structure that are not easily seen otherwise. Cross sections can cut through ceilings, floors and are even used for molding and trim work.
Concepts
Profiles A path represents a line through the point cloud between two or more points, which gives as result the 3D representation of the point cloud along that line. A profile represents a straight line through the point cloud between two points, which gives as result the 3D representation of the point cloud along that line.
Sidebar
Select pointcloud dataset Displays the available Orbit Point Cloud files in the Dataset List, from which to choose the one on which the Profiles and Cross Sections will be calculated. The pointcloud of a Mapping Run or a standalone opc file can be used, not the pointcloud of a Mapping Project.
What is cross section levelling?
The term cross-section generally refers to a relatively short profile view of the ground, which is drawn perpendicular to the route centerline of a highway or other types of linear projects.
Why are cross sectional drawings important?
Cross-sectional drawings are particularly important for estimating the earthwork volumes needed to construct a roadway; they show the existing ground elevations, the proposed cut or fill side slopes, and the grade elevation for the road base.
What is profile leveling?
Profile leveling is one of the most common applications of running levels and vertical distance measurement for the surveyor. The results are plotted in the form of a profile, which is a drawing that shows a vertical cross section. Profiles are required for the design and construction of roads, curbs, sidewalks, pipelines, etc.
Is there a difference between cross section and profile leveling?
There is really no difference in procedure between profile and cross-section leveling except for the form of the field notes. Cross-section rod shots are usually taken during the route profile survey from the same instrument positions used to take rod shots along the centerline.
What is a cross section on a map?
These contour lines connect locations with the same altitude above sea level. A cross-section is a side-on profile of a specific line that we want to draw on the map. We usually represent this cross-section line starting at A and ending at A ' (A-prime). There are four steps when drawing a cross-section.
How to draw a cross section on a graph?
Take that strip of paper and put it on a fresh piece of paper. Draw two vertical lines (similar to two y -axes on a graph) representing the boundaries of your cross-section. Also, draw equally spaced elevation lines parallel to your strip of paper. These lines would be parallel to the x -axis on a graph and are labeled with numbers representing elevations. It looks nice if you make the bottom line 50 feet below your lowest elevation and your top line 50 feet above your highest elevation.
Why is the right side of the map cut off?
This is normal. A map can be made for a very specific location, and the terrain to the east was not necessary to include in the map of Armadillo Ridge.
How to draw a contour line?
Step 1: Put a strip of paper along the cross-section and make a mark on your paper wherever the contour lines intersect with your paper. Be sure to record the elevation at that point. Step 2: Take that strip of paper and put it on a clean piece of paper. Next, draw the boundaries defined by your cross-section line.
What is a drawing dot on a cross section map?
Drawing dots on the side-view of the cross-section map representing the elevations along the cross-section.
Why can't contour lines cross?
These are contour lines. They can never cross because there can't be a location that has two different elevations. We can use a topographical map to make a cross-section along any straight line we draw on the map. A cross-section will give us an idea of how the terrain looks from a side view.
How to record elevation on a map?
Take a thin strip of paper and place it along the cross-section line. Where the contours intersect with the strip of paper, make a mark and record the elevation. These marks and elevations are shown in red.
What is a river cross profile?
River cross profiles show you a cross-section, taken sideways, of a river’s channel and/or valley at certain points in the river’s course. A channel cross-profile only includes the river whereas a valley cross-profile includes the channel, the valley floor and the sides of the valley.
How and why does a channel cross-profile change downstream?
There are three main sections along the long profile of a river. These are the upper, middle and lower course. Each has its own channel cross-profile features.
What Is A Cross-Sectional Study?
Defining Characteristics of Cross-Sectional Studies
- Some of the key characteristics of a cross-sectional study include:1 1. The study takes place at a single point in time 2. It does not involve manipulating variables 3. It allows researchers to look at numerous characteristics at once (age, income, gender, etc.) 4. It's often used to look at the prevailing characteristics in a given population 5. It can provide information about what is happe…
Advantages of Cross-Sectional Studies
- Cross-sectional studies are popular because they have several benefits that are useful to researchers.
Cross-Sectional vs. Longitudinal Studies
- Cross-sectional research differs from longitudinal studiesin several important ways. The key difference is that a cross-sectional study is designed to look at a variable at a particular point in time. A longitudinal study evaluates multiple measures over an extended period to detect trends and changes. Longitudinal studies tend to require more resources; these are often more expensi…
A Word from Verywell
- Cross-sectional studies can be useful research tools in many areas of health research. By learning about what is going on in a specific population, researchers can improve their understanding of relationships among certain variables and develop additional studies that explore these conditions in greater depth.