Tutorial Video: What are the Benefits of Time Location Diagrams for planning infrastructure construction projects?

This is a Tutorial Video for general understanding of the benefits of time-location diagrams for planning infrastructure construction projects.

The major planning and process problems of such projects are also visualized.

Targeted audience:
All people involved in infrastructure construction, who want to get first information about planning in Time-Location-Diagrams: Estimators, planning engineers, project schedulers, controllers, civil engineers, students, teachers.

(Direct Link to the video: http://youtu.be/9sTkqqOcL-g)

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What is New in TILOS 8: In details

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Increased Speed – More Capacity – Greater Flexibility

TILOS 8 was developed with a new kernel providing the technology for rapid future developments in the coming years.

We have also made many evolutionary little feature enhancements that are not specifically mentioned, but makes working in TILOS 8 a lot easier and comfortable.

Usability

Zooming: The zoom of a view can be directly modified by pressing the control button and using the mouse wheel.

Scrolling: The horizontal scroll position can be changed by pressing the shift button and using the mouse wheel.

Auto scrolling: When creating links or sizing tasks and moving the mouse towards the border of the working windows, the view starts scrolling to make further objects visible.

Multiple instances: TILOS can be started multiple times with different projects. Using drag and drop with the mouse allows data to be copied directly from one project to another. (see: Drag & Drop below)

 

Architecture

Speed enhancements: TILOS 8 uses multiple processors/threads to execute the code in parallel. For example: While reschedule runs, you may be edit objects.
Loading projects is up to 20 times quicker, reschedule up to 50 times – as well as importing and exporting data.
Loading grouped and sorted Gantt charts shows up to 100 times quicker.

Tables and Lists: The tables (grids) and the list boxes have been re-engineered to work much faster than before in terms of loading, scrolling and sorting. Each column can be used for sorting by clicking on the column header.grid
Any column can be locked and only the columns to the right of this are scrolled. This can be done by right-clicking on the column heading and locking the columns to the left.
The whole list can be copied to the Windows clipboard – by right-clicking on any column header.

Multi-edit: Multiple rows (max 500) can be selected and any edits on the Properties Tabs will multi-edit the same data item on all selected items.
Tree structures (task templates) can be moved by drag and drop to change the parent items. In simple lists items can be copied by dragging them.

Drag & Drop: If two or more TILOS projects are opened at the same time, data can be copied between the two TILOS instances. This works based on the tables (grids), not in the time distance view.drag
All library items as well as activities can be moved/copied in that way. Missing library items in the destination file are automatically created, if they do not exist in the destination file. For simple items (“other” library objects and graphic)., the “already-exists”-check is done by the name  Other items, like task templates, resources or calendars are identified by their ID.
If tasks are copied between sub projects, all new items are created with a new TASK ID.
If a whole sub project is dragged between TILOS instances the behavior is different: If a sub project with the same ID is existing in the destination file, then its tasks will be replaced completely by the sub project that is copied.  In this case, tasks in the destination project keep their old Task ID from the source file.
This function allows to merge different sub projects into one destination file.

 

Explorer view

The explorer has now three main folders to simplify the navigation:

Views: In the VIEWS-folder all views are grouped by view type. The result is a better exploreoverview as all data views are grouped in one place. (The task and link list  of version 7 have been moved from sub project context to an own view type in view folder).
Views can be sorted and grouped by type or user defined values.
A few new list views have been defined such as the Micro Progress View, that displays all the micro progress records of a project.

Project data: All project specific data is stored in this folder. In earlier versions of TILOS those have been partly located in library folder. Now there is a good separation between project specific data and general library data.

Library: This contains base data not necessarily linked to one specific  project –  such as task templates, resource and cost library.

Time distance view

Cell wizard: The new cell wizard supports all types of cell content to embed existing cell contents or to create new cell contents in order to view them in a cell. Cell and View setup is more easy and intuitive now.

Multi sub projects: Up to TILOS 7 one time-distance cell could display only 1 sub project. In TILOS 8 now multiple sub projects can be added to be displayed the same time-distance cell. Planning and viewing of data is now more flexible:

  • Different scenarios can be overlaid in order to compare them.
  • Parts of the project can be planned in separate TILOS files from different persons, merged and then overlaid to highlight the interaction between the different planning states.

Gantt Chart Output

Grouping and sorting: The grouping and sorting options for the Gantt chart view have been enhanced and is much faster in TILOS 8. Different views can be created and saved for later use.

Print to multiple pages: Large projects can be printed to multiple pages by enveloping them to a definable border view around each page of the output.

Hide bars panel: This options allows us to only print the Gantt chart text panel without the gantt bars, For example as a project summary report list with progress and earned value data.

Enhanced Controlling features

Baseline: In TILOS 7 baselines were created at the sub project level and each baseline baselinehad its own report date. This has been unified in TILOS 8 and the baselines are now global for the whole project.
Newly introduced tasks can be added to existing baselines as an update. Different baselines can be merged to one baseline after conversion from Version 7.
This allows more powerful reports and progress analysis in time distance diagrams where different sub projects are merged in one view.

histoHistograms: Histograms can display baseline data in TILOS 8 in order to compare them with the original planned values.
The main advantage is to analyze the planned and achieved productivity during execution phase.
Cumulative curves have a new option to draw the lines and show the data only up to the report date.

Dashboard: The dashboard showing performance and earned value data from different crews can now be embedded into a cell of the time distance view.
dashboard

Mass Haulage

 

Overview: This is a completely new functionality added to TILOS 8 and is designed for heavy civil works. It supports a multistep planning of mass transportations. After importing the quantities and the areas, the haulage itself and the sequencing can be planned more easily and smart.

Mass Diagram: The mass haulage diagram displays all quantities (mass areas) along the distance axis referring to a soil type table.
The diagram displays the main cut and fill areas, borrow pits, dump sites and stockpiles.

mass diagram Histograms: Based on the mass areas, diagrams can be defined using TILOS standard functionality:

Cumulative quantity curves showing total cut and fill values and balanced curves preparing the haulage are available. The shortest transports are between the zero line of the balance curve indicating equal cut and fill situation.

mass histogramHaulage planning: Planning the haulage is interactively done by drawing connectors between the mass areas. On the fly the transport distance and the cut / fill state of each area is analyzed and displayed.

haulage planningScheduling: By a wizard you may create from the haulage lines the cut and fill tasks in the time distance diagram. After adding the links, the reschedule process can be activated to calculate the required time for the mass haulage and also the time based usage of the equipment in the diagrams.

haulage schedulingControlling: The Mass haulage controlling uses the standard reporting function of TILOS. Different progress methods can be used: Direct progress entry or micro progress can be imported. Evaluation is also using the standard functionality of TILOS.

haulage controlling

Data Exchange

General enhancements: The XML profile editor has been integrated into TILOS and it is located in the Tools menu option.
When creating a data file, the XML profile information can be embedded  in that data file. This simplifies the import by using the embedded profile.
Additional to transfer data by creating a data file, the data exchange in TILOS 8 can directly connect TILOS to the Exchange macros via a TCP-IP based connection.

MS Project: Support for MS Project 2013 has been added.

Primavera: Support for WBS structure that can be exchanged with TILOS directly.

iTWO: A new module has been developed to exchange data with the RIB iTWO software.

It can import the activitiy model with assigned resource and cost from RIB iTWO. In the reverse way, the TILOS activity model can be exported to iTWO.
This allows creating the schedule in TILOS and export to iTWO to make the connection with the estimate. The resource loaded schedule can be passed back to TILOS updating the existing activities.

Other enhancements

wbsWBS Structure: In addition to category structures, a WBS structure can be created and   applied to the tasks. This can be used for grouping the data in the Gantt chart based on the WBS code.

 

 

duration displayDuration display: For each calendar a base time unit can be defined to show working days in relation to the working time defined in that specific calendar. (e.g. 8h days, 10h days depending on the defined working time).

 

Distance profiles: More text and user definable data fields have been added.

linestylesLine styles: Viewing task progress in TILOS 7, the progress line styles have been overlaid with the line style of the task. In TILOS 8 this can be placed behind the task.

customizecolors

 

Using the enhanced display mode (Customize colors for progress) for each task, a task individual definition for color and line style can be made for: planned, performed and baseline state of a task.

 

 

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TILOS 8 available in additional languages

During the last few weeks Linear project has delivered TILOS Version 8 Time Location Scheduling Software worldwide.
With Version 8 there are also a few aditional language versions available. Here is a the list of languages in alphabetical order:

  • english
  • french
  • german
  • italian
  • russian
  • turkish

If you would like to work in another software language you may ask your local distributor for assistance. You will find the contact information for your local distributor in this Partner map.

The following language versions are in preparation and can be released soon.

  • chinese
  • spanish

 

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What’s New in TILOS Version 8

This week we have been released the beta version of TILOS 8. Version 8 will provide the foundation for a new a new product line for linear scheduling. The most significant changes are under the surface of the application – in its software architecture, which has been completely rewritten.

We are very proud of the results:
TILOS has bigger capacity in data and it performs actions like opening projects, changing views or rescheduling up to 50 times faster than the previous version. The most plus in speed we got by generating grouped Gantt chart outputs. They now open directly after clicking due to optimized data management and overworked screen display. TILOS 8 is not only speeded up with software optimization, but also with optimized hardware usage by using multiple processor and multi thread technology.

The final release is planned for the end of January 2013. If you would like to test the new version before, please send us a email to betatest@tilos.org. We will supply a download link and an activation code to test the full functionality of TILOS 8.

TILOS Explorer changes

The explorer displays now 3 main folders to simplify the navigation:

1. Views:

In this folder you may group or sort all the different new (and old) views: Time distance views, Gantt charts views, list views generated from tasks, links, resources, micro progresses and others.

2. Project Data:

Here the entire project specific data is displayed, like distance axis informations and cell contents.

3. Library:

This folder contains base data not specifically linked to a project, such as task templates, resource and cost library.

 

 

Enhanced Grids usage

The data grids (Tables/Lists) have been completely reprogrammed. Now the grids have a more common look-and-feel and new fuctions:

  • By clicking the column header the rows get sorted by the values in this column, even in the gantt chart panel
  • With the cursor keys it is possible to navigate in the rows and columns
  • Tab key will jump to the next field in the row
  • Pulldown values can be selected by typing keys
  • The content of each data grid can be exported to the clipboard
  • In general the whole table grid can be used without mouse, only by keyboard

Cross project drag & drop in grids

Drag & Drop in Grids allows to create new lines just by copying existing lines in the same grid. You can do that also with the Shortcuts Ctrl-C and Ctrl-V.

As one of biggest enhancements in this context: It is possible to drag items (of the same grid) between parallel running TILOS Sessions. For example you may copy line styles, symbols or task templates between different TILOS files to synchronize the data in different projects. By this way: missing lower level objects gets also be copied to the destination, if needed.

Finally complete Sub-projects can be copied from one TILOS session to another: This special case replaces all data of the Sub-Project. As a result both (source and destination) content is similar. This option can be used to merge project data from different files into one file to make cross project analyzes.

Multiple sub project in same planning cell

One major benefit in project displaying of TILOS 8 is, that you have the possibility to display more than one Sub-project in the same Time-Distance-planning cell.
In combination with the new drag & drop functions for copying project data, this is very powerful new functionality: Plannings from different files or different states can be overlayed and compared.

Project controls, Baselining and Reporting

  • In previous versions, each sub project and baseline could be created with an own report date. Now the new baselines are working on file level and there is only one report date.
  • New created tasks, added after the baseline creation, now can be merged into existing baselines.
  • The dash board can be displayed in a cell of a view. The dashboard is showing the performance figures like progress actual and planned, schedule and cost performance index. The task base for the dashboard report can be set up by assigning a filter (e.g. take all welding tasks from different Sub-projects: Cross-Project Report for just one work type)
  • The task baseline values can be included in histograms to compare planned against actual values. The S-Curves then display planned quantities against actual achieved quantities, planned time against actual time, etc.

Mass Haulage Diagram

As a complete new functionality the Mass Haulage Diagrams has been added to TILOS Version 8.

This special new diagram displays all cut and fill areas and highlights the soil classes by different colors . The arrows are displaying the haulages between the cut and fill areas. These haulage lines can be created just by drawing on screen.

TILOS now provides an overwiew about the flow of material and also the transported quantities. Extractions, dump sites, stock piles are displayed in the border area of the Mass Haulage diagram.
The mass balance curve displays the balance between cut and fill calculated from the left side. Ideally this curve should be zero at the end.

The cut (blue) and fill (gold) tasks can be generated automatically from the context menu of a haulage line. The task quantity is set by the haulage quantity while duration is calculated from the work rate.
The time histograms displaying planned cut quantities per week, the summary curve displays the stock pile of the crushing zone.
The planning of big mass movements are more easy and transparent with the new functionality. It is included in the controlling concept along with TILOS.

Data Exchange

All exchange modules have been adapted to the new data structure. To shorten the number of clicks, the addon modules can now directly communicate with TILOS online. No need to create and read xml files any more, as long as both applications run on the same machine.
The XML-Exchange-Profiles can be included in the TILOS file itself.

Data exchange is now much easier and more comprehensive.

Google Earth Addon

One of the most interesting aspects of TILOS 8 is the new Google Earth add-on component. Just a couple of clicks are required to visualize your project on the globe.
We have already published that:

http://blog.tilos.org/development/tilos-version-8-contains-google-earth-integration/

 

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TILOS at South Carolina DOT MEETING

Linear project Americas was a sponsor of the  15th Annual American Council of Engineering Companies of South Carolina/ SC-DOT meeting on October 24 in Columbia, South Carolina. This conference was attended by approximately 80 engineers and planners from the South Carolina Department of Transportation and 200 engineers from major engineering companies. Eddie Reeps, the local TILOS Associate in the South East, and Lorne Duncan ( Managing Director in the Americas) provided demos and answered lots of questions during a very busy day.

Eddie and Lorne at DOT meeting

TILOS was well received by civil engineers and planners working for the state and private companies. Of great interest were some of the new features of TILOS 8 – specifically the mass haul diagram and calculator and the integration of TILOS with Google Earth. To quote one engineer:

“TILOS is the planning tool that we should all be using in the South”.

 

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Linear project GmbH appoints Projet Linéaire as new distributor for France

Linear Project is happy to announce a new partner in the global network. The scope of both companies (planning and controlling linear projects) fits ideally, which is also expressed in the name of both companies. Projet Linéaire is providing software and service for infrastructure project in French spoken territories.

The managing director and founder, Fabien Gaboriau, has much experience in planning linear projects. He was always a fan of TILOS – that he was using in his consulting projects. We found the partner with most experience in TILOS software and in the market. It will push the TILOS service in France to a higher level of quality and improves services around the product.

Hubert Geier: “We found an ideal partner in France, with excelent skills in linear scheduling, the TILOS software and having good relations to the french construction industry. We were very concerned about the development of TILOS in France seeing 2 partners disappearing from the market (Inxeoz and A3I). A close relationship between Linear project and Projet Linéaire will lead to a long lasting successful cooperation as both work strictly in the area of linear scheduling and bringing TILOS to a success in France.”

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The concept of Linear Scheduling (Part 2)

Other Features

Spend profiles and resource histograms

Spend profiles and resource histograms are simple to create once costs are added to labour, equipment and materials used in the march chart.  Figure 9 illustrates an example where the weekly cost per crew and the total cumulative cost is presented in a histogram and table.  It is also possible to display the resource histogram per week (or month or day) to determine camp requirements.   Spend profiles are a function of time and are displayed parallel to the time axis of the march chart. It is also possible to create a spend profile parallel to the distance axis to show the cost per section of the pipeline.  Any changes to the march chart (i.e. crew moves) would automatically create a change to the spend profile.

Weekly Spend Profile (per crew with weekly and cumulative totals)

 Applying work and speed profiles to crews

Most estimates, schedules and march charts assume a consistent productivity (or work) rate for each pipeline crew along the ROW. This productivity factor is then applied for the entire length of the spread to determine the duration of each crew.  Applying a constant productivity rate for a crew doesn’t account for changes in profile, soil, terrain (muskeg versus mineral soil conditions) or vegetation type.

For example, a logging crew that has a productivity rate of 2000 m/day would require 15 days to complete a 30 km ROW.  While this provides a rough estimate it doesn’t account for productivity rates based on changes in vegetation types or whether there is any logging required in certain areas (for example an old burn area that doesn’t have  any salvageable timber).

The following examples (Figure 10 and Figure 11) illustrate the difference when a vegetation classification system is used to define the productivity rates for a logging and clearing crew in a Northern pipeline spread. In this example the vegetation data and productivity rates for both crews in a particular location were imported directly into the march chart from an Excel data file supplied by a survey.

Logging and Clearing Crews with constant productivity

In Figure 10 we can see that the logging and clearing crews have very similar productivity rates and a duration of 25 and 26 days respectively for the logging and clearing crews.

The vegetation index in this example defines the amount of work (area in ha) and work rate for each vegetation type along the ROW.  Once this data is known and available in a spreadsheet format,  it is easy to apply this index to each crew as shown in Figure 11 below.  The first noticeable change is that the crews are not consistently progressing along the ROW. Each crew line now reflects a different productivity rate with each change in vegetation type.  More importantly we can see that the duration for each crew has changed significantly.  Logging has decreased from 25 days to 16 days while the duration for Clearing has increased from 26 days to 40 days!

Logging and Clearing optimized by vegetation index

This approach could easily be used in any other geographic location where a known variable impacts the work rate of crews along a ROW. The ability to define productivity in terms of the ROW conditions will enable you to create a more accurate project plan and spend profile when compared to simply applying a uniform rate to each crew.

Applying a speed profile to a crew, based on known changes in productivity, creates a more accurate picture of how the crew is moving along the pipeline ROW (Figure 12).

Crew Speed profile

Progressing March Charts

Progressing crews on a march chart requires the start KP, end KP and the date range for each progress period (based on the inspector field reports) is applied. The exception to linear meters would be counting the number of welds (usually back end welds) or the number of UPI items (such as bag weights).

Figure 13 (below) shows progress for both the grade and the haul & string crews.  Progressing is as simple as selecting a crew by clicking on it, right click and select enter progress.  Enter the start

Progressing Crews in March Charts

and end date for the progress period and the start and end KP.  The march chart software calculates the physical percent complete based on the amount of work completed divided by the total length of the pipeline.  In this example grading is 61.02% and haul & stringing is 40.44% complete. It should be noted that this progress is for the segment that starts at KP 0+000 and ends at restricted access area, it doesn’t include the other two segments for each of these crews.

Progress Bar Charts

Progress can also be indicated in a bar chart format where each the progress of each crew is represented by a shaded bar chart.  As progress is applied to a crew the bar chart view is automatically updated to reflect this progress.  In Figure 14 the direction of build is from right (KP 162+000) to the left (KP112+000). In this example the clearing, pioneering and grade crews have completed the entire length of the spread. Haul & String are between 40% and 50% complete. The automatic welding crew has just started.

Crew Progress Bar Chart

Conclusion

The goal of this guide was to provide a comparison of traditional scheduling tools to march charts which are better suited for linear construction projects such as a pipeline.  This overview of march charts went from explaining and drawing simple lines on the march chart, to adding constructability issues (environmental restrictions) and risk (weather).  Other risks can just as easily be added to the march chart to develop a clearer picture of the pipeline job.  Creating spend profiles is simply a matter of applying costs to each crew.

As described, it is fairly easy to apply speed and work profiles to crews to connect the productivity rates to soil, timber or any other factor that will have an impact.   Progressing during project execution is dependent on the addition of crew inspector report data. Typically the start and end KP for each crew is recorded daily.  UPI items and welding may be tracked as the number installed or completed each day.

March charts connect the schedule to the geography and risks of a project in a manner that is not at all possible using non-linear methods. Hopefully this guide has helped you understand the basics of march charts and the opportunities that are possible.

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The concept of Linear Scheduling (Part 1)

Introduction

Traditional scheduling software for the construction industry is dominated by Primavera, Microsoft Project, Power Project and others.  All of these solutions provide opportunity to develop a series of activities that are logically connected to provide a sequence of events from project start to finish.  While these tools are very powerful, they are designed for the construction of buildings and other facilities (power generating stations, refineries, etc.) and are not adequate for the constructability issues and demands of building a linear project  such as a pipeline, rail system or roadway.  The definition of a linear project is where a series of crews move, in sequence, along a ROW (right-of-way) during construction.

March charts (also known as Time-Distance charts) have been widely used in linear projects, particularly in Europe and the U.K.  This methodology is newer to the Americas, but is rapidly gaining widespread acceptance.   March charts are often hand drawn, prepared in Microsoft Excel or in a drawing program such as AutoCAD.   Linear planning and scheduling software that automates the development of the plan and progressing is relatively recent (last 15 years or so).  Key advantages of march charts are that the schedule are connected to the geography of the ROW and any constructability issues that are important to the project.

The intent of “The concept of linear scheduling” is to provide an overview of how to interpret and use march charts with an emphasis on using some of the linear planning software tools that are currently available.  A list of software is provided at the end of this appendix.

The Basics

Differences between Gantt and March Charts

Gantt charts are familiar to anyone that has planned and scheduled a project. The planner creates a series of activities based on the project execution plan and then logically connects these activities (Finish-Start, Start-Start, Finish-Finish and Start-Finish).  Resources can be added to each activity schedule and resource loading can be easily displayed.  In order to maintain crew sequencing in a pipeline project the planner would make sure that each activity is connected to its successor by a Start-Start and a Finish-Finish relationship.  A typical Gantt chart for a pipeline job is shown in Figure 1.

Traditional Gantt Chart

This Gantt charts clearly shows each activity with the start and end date of each activity. Any progress would be shown on the Gantt chart as the percent complete for each task. The problem with a traditional Gantt chart is that reporting that a bending crew is 45 % complete is quite meaningless because these traditional tools assume that progress is from start to finish and there is no connection between progress and the geography of the ROW.  The ability to include crew moves, permitting delays, environmental restrictions and other construction issues is not possible.

A march chart on the other hand displays these same crews as a series of lines moving along the ROW.  Each crew is logically connected to its successor with Start-Start and/or Finish-Finish relationships.  Completed sections are easily identified with crew moves, crossings and environmental windows clearly visible on a march chart. Using same example, a march chart will clearly display what 45% of the ROW has been completed by the bending crew and how any moves or ROW access issues have impacted the progress.

A typical march chart (Figure 2) in its most basic form shows each crew represented by a different line type. Usually distance along the ROW is horizontal and increases from the left to the right. Time is typically represented vertically, increasing from bottom to top (although it can just as easily be shown increasing top to bottom). It should be noted that the orientation of the time and distance axes is a matter of personal preference and can easily be switched in the software.

The advantage of march charts is immediately obvious as you can easily determine the location of each crew at a particular point in time.  Any issues associated with crew productivity rates are also readily apparent. For example, the red arrow in Figure 2 indicates that, based on the productivity of each crew, the lower-in crew will overtake the ditching crew between KP 25+000 and 30+000. This was not obvious in the Gantt chart view (Figure 1).

Simple March Chart

In a march chart the slope of the activity indicates the relative productivity rate for the crew.  The steeper the slope, the slower the crew is moving (because more time is spent and less distance is completed). Non-work periods, such as scheduled days off or work stoppages appear as vertical segments on the crew line.  A vertical line indicates that time is passing, but the crew is not moving. Figure 3 shows an example where the grade crew is moving slower (468 m/day) than the Haul and String crew (600m/day) with each crew working a 6 day 10h shift rotation. The green bars across the march chart, and the short vertical jumps in each crew, indicate the day off each week.  This march chart shows that grading has to start about 18 days ahead of string in order to keep these crews from overlapping.

The productivity rates that are displayed are calculated automatically by the march chart software based on duration and length of each task.

For clarity and ease of explanation, all of the following examples in this guide will only show a few representative pipeline crews.  Typically each crew is assigned to a different layer of the march chart so that the planner can display one or many crews simultaneously by activating the layers.

Productivity Rates and Slope

 Constructability Issues

With a basic understanding of these march chart elements a march chart can be further enhanced to display any other critical elements of your project. These can include the ROW profile, crossings, environmental restrictions and land acquisitions.  Other elements such as vegetation type, soil type and rainfall data can also be included on the march chart.  The amount and type of information shown on a march chart is determined by the project team.

ROW Profile

The ROW profile is important in developing the hydro-test plan and to determine productivity rate changes based on elevation (discussed later in the section on speed profiles). Most profile data (LIDAR or survey) is available in a spreadsheet format and can be easily imported into a profile diagram using the import function of the march chart software to generate the ROW profile as seen below in Figure 4.

Elevation Profile and Restricted ROW Access

Restricted ROW Access

Construction of the pipeline may be hampered by periods when certain parts of the ROW are not accessible. This would include environmental windows for wildlife and rare plants, permitting issues or ROW acquisition delays.

Restricted access periods are easily represented graphically on a march chart by rectangular shapes as shown in Figure 5. Once the impact of a restriction has been evaluated it may be necessary to modify the work plan to avoid working in the restricted area.   This can be done by splitting the crews so that the work that is impacted by the restricted area will be completed at a later date once the restricted period is over.  Figure 5 illustrated a move for both the grade and string crew to avoid the restricted area.  In this example, both crews skip the restricted area (1 day lag to allow for move) and continue to the end of the ROW at 30+000.  Once this work is finished, and the environmental restriction has expired, both crews move back to the restricted area and complete it in a reverse lay.  The red dashed lines indicate the logical links between each crew segment.

Restricted Access Showing Move Around

Crossings

Once the environmental or land restrictions have been established on your march chart the next step is to identify crossings. Crossing types can include foreign utilities, roads, rail or water and are important features to locate on your march chart.  The method of crossing will be dependent on the type of crossing.  Water crossings usually require an open cut (if permissible under the environmental guidelines) or will utilize a HDD (Horizontal Directional Drill). Most roads and rail crossings utilize some type of bore method while foreign utilities are exposed using a hydrovac.  Each type of crossing can be color coded on the march chart for quick and easy identification.

Figure 6 (below) shows a highway (at KP 1+793) shown in grey and a blue river crossing (KP 29+690) on the march chart.

Road and River Crossings

Stockpile locations and Valve Sites

Virtually any information that is important can be inserted into the march chart. The following example (Figure 7) shows the stockpile location (KP 26+102) and the supply zone for this pipe (KP 0+000 to KP 29+655).   It is interesting to note that stationary items (such as mainline block valves) can also be shown on a march chart.  The two valves shown in Figure 7 are represented by a series of rectangular shapes indicating different stages of installation from civil to mechanical to instrumentation and telemetry.

Stockpile Sites and Valve Locations

Weather Risk

Risks related to weather events (precipitation amounts, temperatures) are easily evaluated by overlaying meteorological data on the march chart. In the Figure 8 the different shades of blue represent average monthly rainfall amounts.  The heaviest amounts of rain occur in the lower right of the march chart (represented by a darker blue).   In this example the planner has avoided working in this area during high rainfall amounts thus reducing the risk of heavy rain impacting construction.

March chart showing monthly average rainfall data as colored backgound

 

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Linear project welcomes Dr. Heiko Trogisch as new trainer and consultant

Linear project is pleased to introduce Dr. Heiko Trogisch as a new member of Linear project. He is a civil engineer with specialization in traffic route engineering and has been working on different railway projects in the past.

As the new section manager for railway he is developing new rail solutions and caring on our customers in railway branch. His further responsibilities are training and consulting, especially in railway environment.

We wish Heiko Good Luck in his new job.

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Getting in touch with TILOS-Software: Watch Videos

Have you already watched the TILOS Videos on the TILOS Website?

They provide an excellent and fast overview on the TILOS user interface and the way of working with time schedules along the distance axis. They are not only useful for interested people trying to get a first contact of the Software, but also for new users – seeing how to start projects and do the things in the right way.

The TILOS Videos

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