Till now you have learnt how to design a horizontal curve and vertical curve. Creating cross-sections includes extracting elevations from the ground surface, designing the assembly or template and applying it along the vertical alignment to get final cross-sections and related quantities.
Road cross section software
As per the options we discussed, you can create a cross-section, but how long the cross-section length to be? if you have points for long distance from the alignment line. To control the width of cross-section ground values a concept called swath width is introduced.
If you want to create any remark while creating the cross-sections from the ground surface, respective alignment names to be selected for marking remark. Remarks get created in alignment and cross-section intersection point and are reflected in the respective cross-section.
In case if you require to create custom cross-sections at locations like cross drainage structures, bridges or any type of crossing, which are not matching with the distances as specified in the standard interval you can create such cross-sections in ESurvey CADD.
Canal Cross-section is a cross-section diagram of a water channel that helps transfer water from the source to the fields or the target area. The cross-section of canals is taken for a better understanding of the underlying areas, the water level, and the nature of the soil. This information can be superimposed with new or modernization details to assist in construction and other related activities.
Road quantity calculation as per typical cross section for a highway construction project is a time taking and tedious process. Generally contractors and consultants prefer cross sections at an interval of 10m along the length of the road. At working stage, billing engineers use geometric and pavement design details for cross sections generation. For as-built cross sections, they use level data collected after each stage of the construction. This procedure automatically generates pavement materials required and consumed along with cutting and filling quantities as an offshoot.
Engineers used to prepare road cross sections and quantities manually in the earlier times. And it used to take good amount of time. The process started easing with the introduction of CAD software. And now with Road Estimator, the entire process is automated till the final stage to calculate the quantity of all materials resulting in exponential reduction in time. Road Estimator is a CAD based application that is useful for cross section generation and quantity calculation.
It is a template-based solution. And user can easily define templates for all types of road including expressways, with service roads, district roads etc. Lane widths and cross slopes including superelevation can be provided for each chainage giving required control to the engineer.
Quantity take-off of pavement layers seems easy because depths and widths are usually common. However, constructors need to fulfill many conditional requirements those are project specific. And that can add to the complexities. For example, design requires sub-base materials like subgrade or granular sub base only in filling. Or the depth of a particular layer may vary for each cross section, the list can be enormous. Anchor point based design layer definition and applying those layer groups chainage wise in Road Estimator has simplified the procedure to process large data. This further adapts the pavement layer conditions required for each chainage flawlessly.
When it comes to widening and strengthening of a road also called as brownfield projects, defining profile corrective course (PCC) for road overlay and other related pavement layers are challenging. Because it may require meeting different conditions. Such conditions can vary for a very short stretch of the road. And this requires change in cross-section even from chainage to chainage. Not only Road Estimator takes care of all such conditions but you can get quantities too with extreme ease.
You can generate as-built cross sections based on level data collected periodically or after completion of each stage of the construction. After importing his data into Road Estimator, you can easily obtain cross sections and road quantities. Sometime site conditions may not allow collecting complete data. Or user might have to correct the captured data to replicate the actual site. For this, there are special tools and options provided to get precise material quantities.
Detailed quantity calculation reports for any materials like pavement layers, cutting and filling in road construction, shoulders, elements like drains, retaining walls etc. are automatically generated along with the cross-section. Area and volume reports can be obtained within few clicks. Options are provided to define customized elements and report too those are not part of the standard reports. And this gives Road Estimator an additional edge. And the definition of customised elements is useful when the project has some detailing which are not as per the standards. There are options to define custom area enclosed by different layers like embankment, cut level, finished road etc. Formula definition helps with mathematical functions creation that can make adding all the cut area or fill area or pavement material.
The display of area statement in the cross-section is a useful information. Coordinate table below the cross section shows elevation and offset values of required layer. And cross section display includes toe distance and right-of-way (RoW) limits along with dimensions and other variables like chainage.
The complete length of the road can be very long. As there are more cross sections, printing them directly or saving to PDF or CAD formats saves lot of effort. It is possible to attach user defined print template with company name, signatories and other information.
Create profiles and cross-sections from any point within the design. View updates on the fly as the design is modified with dynamic cross sections. You can see the ground changing to reflect design edits. Include surface features, corridor components, and notations, such as construction limits or stationing.
This article demonstrates how to calculate earthworks cut and filling using the Cross Section Method and a spreadsheet. Starting with pen and paper we will show you how to generate and input the cross section data to calculate the cut and fill volumes in the spreadsheet. (There is a separate blog which explains how to use the Grid Method sheet)
For each cross section the cut area and the fill area are calculated. Then for each cross section pair, the cut and fill volume of the section between them is approximated by finding the average of two adjacent sections and multiplying by the distance between them.
2. Check the scale and units of your site plan. You need to know the scale to calculate the length of you cross section, the distance between them and the distances along the cross section where the elevation changes. The photo opposite shows 4cm is the equivalent to 20m on the plan.
4. Collect your data. You now need to take off the existing (E) and proposed (P) levels and write them next to each significant change in elevation, to produce a cross section. An example, showing one way to do this, is in the photo. It is key to use your fine pen or pencil here to ensure you can fit in the two levels and so they remain legible.
You will notice that this sheet is protected and cannot be amended. Before starting your own sheet, we recommend you view this example to understand what your finished cross section results should look like.
RDS is a low cost infrastructure software dedicated to companies to carry out all categories of linear projects such as road projects, pipeline network projects and sewage network projects. Our software has a simple, intuitive interface and gives the user great flexibility to design linear projects
Our software consists of: Land survey;
Horizontal alignment;
Vertical alignment;
Cross section;
Sewage network;
3D projects Demonstration;
The purpose of the software is to provide an intuitive, easy to learn and easy to use graphical approach to roads design and draughting, whereby basic engineering parameters pertaining to the roads design are input by the designer whilst working inside an AutoCAD drawing. RoadMate, the road design software, gives you final working layout, longitudinal section drawings and cross section drawings with the minimum amount of manual input.
Designer can determine the distance left and right from the centreline at which existing ground elevations are to be calculated. Centreline road levels are determined automatically from long-section vertical design.
The designer can then use the strings to modify the original Digital terrain model (DTM), forming a new DTM of the original surface and the designed road merged together. The 3D faces allow for shading of a 3D view in AutoCAD. The 3D model can then be input to rendering software, such as Autodesk 3D-Studio, and photo-realistic images produced of the design.
Location Module - Easily share and showcase your design with Multi-Plot Report Builder. Print out plan, profile, and cross-section data as one document. Simplify your presentation of deliverables with single document control. Output sheets interactively update with your design.
OpenRoads is all you need for geometrics, survey, drainage, utilities, quantity takeoff, cut/fill, site grading, lane configurations, and mobility. Ensure visibility into overall project performance with design-time analytics to achieve optimized design outcomes for a wide variety of analysis such as drainage, terrain, safety, grading, site visibility, and more. Roadway designers and engineers require software that seamlessly collaborates across disciplines, addresses growing industry demands, and includes automation to remove tedious manual work. Whether you need to produce traditional 2D deliverables, advance to 3D modeling, support digital transformation, or all the above, OpenRoads is the choice for road design. 2ff7e9595c
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