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For ease of use, constructions in Neara are specifications of points in space for conductors to attach to, whether terminating on the pole or tangent to it. To model a T-junction, one conductor passes through at a certain attachment height. The second conductor terminates on the pole - simply place it at the same (or similar) height. By combining
Select the conductor in question Click the "Spans" tab in the sidebar Select the desired wind environment from the dropdown The blowout distance and angle will be shown for each span, in the last column. You should see something like this: NB: To change the actual wind/ice environment parameters, edit the available environments by clicking "Environm
To place a pole with construction, but no cables we do as follows: Click on the pole tool and place down the desired pole at desired location Click 'Add assembly' under the Attach Points heading in the properties pane Once Add Assembly has been clicked, click on construction to make the crossarm Then model the construction and non structural compon
First, ensure that your project settings are set to US customary if required. To do this click here for instructions. Get into touch with us at support@neara.com to have this NESC tool enabled on your account. Select Edit from the top menu bar Select Setup NESC Rules from the drop-down Click the + as highlighted in the below screenshot.This will bri
Effect on tip load of large pole plants such as pole mounted transformers are calculated as: Ftip = P * A* (hplant / hpole) Where Ftip = Pole tip load (kN) P = Design wind pressure on plant (kPa) A = Area of plant exposed to wind (m2) hplant = Center height of plant equipment (m) hpole = Pole height above ground (m) Note: Power Lines Pro currentl
The Edit menu contains useful commands for working with imagery tiles and LiDAR features: Working with imagery tiles When a line is made that crosses one or more imagery tiles, all tiles with conductors that haven't been added can be automatically added with the Edit > Add Imagery Tiles option. Any tiles that were added will be removed if they
1. Component Forces When the mouse is not hovering over the Resultant Forces Graph, the component forces will be the the components that will create the maximum (or worst case) Total Force. When the mouse is hovering over the Resultant Forces Graph, the component forces will be the display force components create by the specific wind direction sho
Ground clearance, using clearance lines The most basic way is to add clearance lines (under the Clearances menu) to ensure conductors stay above a minimum height. Ground clearance, using the Ground Clearance Tool Select the Ground Clearance Tool, and hover over any individual conductor. The worst-case ground clearance for the various environments wi
Neara provides a variety of ways to customize your project screen for different tasks and needs. Inside a Project, workspaces define the layout of your screen. For example, you might have a 3D View workspace with a layout that optimizes working with 3D views, and a Reports workspace that focuses on report-related features and actions. The default
Now that we have validated our clearance measurements and structure utilizations, Neara offers a variety of built-in reports to export. Selecting a report You can either export a report for your entire design, or for a set of selected objects. To export a report for only selected objects, select them before proceeding. If you want to export a repo
In order to specify tensions for individual cables: Place your conductor span(s) Using the move and select tool, click on a conductor span and scroll down to the 'Catenary Definition' section within the properties tab (if the properties tab is not available, press the '+' next to any open tab and add it) Click on the drop down menu and select the ‘S
Figure 1 - Geometry of Overhead Span The shape of the a inelastic conductor between suspended between two supports is described by the catenary shape in figure 1, with the following equation: Where the catenary constant C is: H = horizontal component of conductor tension T (N) W = resultant or inclined distributed conductor load (N) Wind and Ice Con
The maximum bending stress (also known as the material strength) is the maximum amount of stress that can be applied to a material before the fibres in the material will break down. This is typically a known property of the material and hence designers ensure that the forces and moments on an object do cause any part of the object to exceed the m
See Constructions and Components Library for details on editing constructions and components. Neara does not allow you to modify the number of attachment points in each group, or to add/remove groups of attachment. This is to avoid creating problems if the construction is already in-use in the design, to avoid making it incompatible with the number
If you create a new account, you have the option to setup an Organization account in Neara. This allows you to invite other users in your organization to collaborate with you on designs in a secure, controlled way. If your company has a Neara Organization account already, you may be invited to join it. You can only create and/or join an Organization
Creep in Environments In the Behavior column, if the Creep and Preload tickboxes are ticked they will apply the worst permanent deformations from creep or / and preload simulations. If Creep has been selected for an environment, then that environment will be simulated in FEA with the creep permanent deformation, if Preload is selected, then that env
Neara Environments are pre-defined, customisable sets of environmental variables to apply in network model calculations, such as blowout or clearance measurement: Temperature; Wind; Ice/Snow; Cable and Structure Load Factors; Strength behaviors for poles, plants, and constructions; and Creep behaviour for conductors. Use the Environments menu to vie
The Modulus of Elasticity (also known as Young's Modulus) is a property of a material which defines how much the object will change its length in response to a force is applied to it along its axis. The higher the Modulus of Elasticity the less change in length the object will have in response to a force. An example of a material with a low Modulus
AS/NZS7000:2016 Theory This section will outline the process documented in the Australian standards AS/NZS7000:2016 and AS/NZS1170.2. Region Wind Speed The first step to in a design is to decide on a regional wind speed. The regional wind speed is a function of three things, the line security level (measure of line reliability), the line design life
Sample data A text file containing sample LiDAR data is attached to this article. Download it to your device so you can inspect the required format and try out this feature in your project: Download the sample LiDAR data file If your browser displays the LiDAR text file in a new tab, rather than downloading it when you click the link above, right-cl
You can edit Pole Top Constructions in the Constructions (Assemblies) Library When changing pole top constructions, you need to make sure that you have set the correct number of conductors prior to updating the pole top construction. Select the conductor set with the pole top construction you want to update. In General settings, update the Num# cab
In some designs, you may need to measure the minimum distance between: Two conductors A conductor and an object (shape, pole, stay wire for example) A point to a point An example of this is if you have a conductor span passing above another conductor, as shown below: In this scenario, you might want to ensure that the top conductor when 'Hot' doesn'
There is no exact formula to calculate the Torsion Constant of a rectangular object. However there is an approximation given in by the following formula: Example Consider a cross arm that is 2m long, 0.1m wide and 0.2m deep. The long side is 0.2m and hence a = 0.2m, b = 0.1m. Solving the torsion constant gives: This is the same result calcula
This tutorial will show how to create a large lot subdivision. The design will start from a DXF with cadastral boundaries, which will be used to position trenches and identify service points. Download the design project and subdivision DXF shown in this tutorial
The Conductor tool on the toolbar is used to create a new series of conductor spans, and to extend and fine-tune an existing conductor span: Placing poles and conductors Click the Conductor tool in the toolbar and confirm the type of Conductor, Pole, and Construction to be placed in the Conductor Properties panel in the sidebar: Clicking the bl
If you don't see the Underground tools and options shown here in your Neara workspace, contact us to discuss your account setup. Trench tool The Trench tool on the toolbar enables you to place trenches through your design that will guide your underground cables: Click on the Trench tool in the toolbar: in the Perspective view your cursor will chang
When you have placed your conductor down you can select it with your select tool and edit the properties of the conductor. These are grouped into 4 sections: General Poles Spans Materials General In the general tab we can change the physical characteristics of the cable: Type Voltage Number of cables Creep offset We can also change the catenary defi
The Pole tool on the toolbar is use to place new poles on the ground, and to insert poles into an existing conductor: It allows a specific type of pole to be placed at each location, so that when the conductor tool is used the pole type doesn't need to be changed each time - it will automatically match the type of pole denoted by the placed pole.
The first step to modelling an existing network is to make sure that you have the right poles, conductors, components and constructions, created with the right characteristics. Neara makes it easy to create these to your design specifications. This article will explain how to create poles, conductors, construction components and constructions thems
To create mid-span poles, select the Pole tool on the toolbar, and click on the conductor to place the mid-span pole. You can use the Precision Placement tool to edit its exact location. All conductors spans that are equal to or lower than the above ground height of the mid span pole will automatically be attached to the mid-span pole. To place mid
Using the Simulations menu The Simulations menu works with the Finite Element Analysis (FEA) panel to determine the type of simulation. About setting up simulations using Formulas In addition to setting up simulations using this menu, you can also setup and run simulations with Neara Formulas: simulate_strain_section_fea simulate_structure_fea simu
The Section Modulus takes the Second Moment of Area (measure of the stiffness of a object due to its geometric shape) and divides this by the distance from the Neutral Axis to the outer surface of the object. For a cross arm that is 0.1m wide by 0.15m deep the second moment of area vs horizontal is 1,250cm4 and the second moment of area vs v
Following is a list of the Second Moment of Area and Torsion Constant for commonly used shapes (other shapes can be found online). Description Figure Second Moment of Area & Torsion Constant Rectangle Circle Ring
With very large files (e.g. over 5km lines) the display in Neara can start to respond slowly. To improve display performance we recommend that you: Break the file into sections Turn off the Profile view by clicking the (x) on the Profile view tab We also recommend that you use a supported web browser and GPU configuration.
Before importing a DXF file To avoid potential issues when importing a Drawing Exchange Format / Drawing Interchange Format (DXF) file we recommend that you do the following in your DXF editing software before importing into Neara: Ensure only modelspace has information Ensure paperspace sheets are deleted Remove/purge all unused elements of the dra
Load factors are set in the Environments. These load factors can be used to scale applied loads due to tension, wind, component weight, and more. The FEA engine handles load factors by first finding an equilibrium without applying load factors. Then the load factors are separately applied to increase the loading on the poles which then further defle
To switch between US Customary and Metric units of measurement. Select Project menu at the top of the screen, and then Design Settings Select the Units drop-down to choose Metric or US customary
The Resultant Forces Graph is a lotus plot with the following features: 1. Pole The pole is represented by a solid circle at the center of the graph. 2. Conductor Conductor spans are represented by long straight continuous lines from center of pole to edge of graph. 3. Stay Where applicable, stays are represented by short straight continuous
This feature can be found by selecting a conductor and then in the properties panel clicking on "Input Field Data" in the Catenary Definition section. 1. Use Field Data To input sag measurements from field surveys, first select the conductor in the work space. Then click on Use Field Data on the right hand side bar. 2. Measured Conductor Temperature
Please note that imports are case sensitive, make sure all fields are lower case to ensure correct importing. Combination CSV Import Imports a CSV file with the points in 3D space. The order of the CSV columns will not affect the import, as long as there is a heading row with the following headings to identify the columns: Heading Row Fields Requir
The Survey tool on the toolbar allows you to add feature points to the map overlay of your design. This helps visualize how a conductor span will look in the real world, and perform accurate measurements. It also allows you to import elevation data from Google Maps so that you can use accurate heights in your design and analysis. Types of feature
There are two ways to add a stay/guy wire: both the Move and Select tool and the Stay/Guy tool on the toolbar can used to add a stay / guy wire to an existing pole. Using the Move and Select tool In this method, to add a stay to a pole first select the pole by clicking the Move and select tool on the toolbar and then click on a pole: In the Prop
Static analysis Assessing the impact of a single stay on a pole can be done using static analysis. Add the stay, select the pole, and view Properties panel > Structure in the sidebar: Finite Element Analysis An accurate analysis of both single and multiple stays is done using Finite Element Analysis (FEA). Add the FEA panel by clicking the (+)
The Stay editor can be accessed via: Selecting the stay within the work space; or From the Overview Limit State Table tab by clicking on the Stay name in column 3 The Stay editor is only shown if exactly one stay is ticked. It is there purely as a convenience to allow some stay properties to be edited within the tip load section when assessing t
This article explains the crossarm parameters Second Moment of Area vs Horizontal/Vertical which is found in the Components library. The Second Moment of Area is a measure of the stiffness of a object due to its geometric shape. The following diagrams show where the Neutral Axis axis is for the Second Moment of Area vs Horizontal and Second M
Overview This article will cover adding a map overlay to a new design when you are starting with a blank model or importing data. For further information on editing or updating the projection, check out: Working with the coordinate system The Map tool on the toolbar is used to add a map overlay to your design, and georeferencing a map overlay to g
The maximum bending moment (which is used to calculate the maximum tip load) is calculated using the formula: The section modulus in this formula is dependant on the diameter. Hence there is a relationship between the maximum bending moment, the diameter of the pole and the modulus of rupture (also known as the material strength). If the box is
The Report menu contains a number of pre-built reports that simplify exporting commonly used data about a network design including: Pole information, Beam forces, Stringing tables, Tipload, Foundations, Span clearances, and Point Cloud clearances. In addition the menu includes options for the generation of Plan and Profile DXFs and PDFs via Reports.
Crossarms have a number of parameters that can be configured to model any type of cross arm. The following articles provide further detail on the impact of each parameter: Material Length, Width, Depth Mass Maximum Bending Moment Material Strength Second Moment of Area vs Horizontal/Vertical Torsion Constant Section Modulus vs Horizontal/Vertical M
To see detailed tip load results, select the Move & Select tool on the toolbar and then select a pole. On the Properties panel in the sidebar, select the Structure tab. You will see something similar to this: Overview Limit State Table The table at the top of the Structure tab provides a quick overview of the Pass/Fail state of the pole or st
The right hand information panel will display conductor information shown once a conductor has been selected. This information will only be shown when one conductor group is selected. 1. Tool in Use This will display the tool currently selected in work space. 2. Selection Current selected conductor name is shown. Conductor name can be edited here.
The Datasets tool on the toolbar is used to manage the datasets that are currently used in your model, and view available datasets: Viewing & using available datasets from your own organization Click the Datasets tool on the toolbar, and then click the Add Dataset option in the properties panel in the sidebar: The pop shows a list of dataset
The Design Setting Remove Status Stops Loads From Being Applied controls if elements marked as "Remove" in the materials tab are to be included or removed from the structural calculations. This applies to both static analysis and FEA. For example consider this situation where there is a strain pole with balanced tensions on either side. On the left
This tutorial models an existing underground network from a DXF GIS overlay, and applies the tools described in 1 - Underground tools. Download a copy of the Project file used in the video tutorial Next: 3 - Single-lot subdivision example
General Theory The Span Reduction Factor (SRF) is a concept outlined in AS/NZ7000:2016 appendix B. The SRF effectively reduces the span length that the wind pressure is applied to when calculating the loading on a specific structure. The concept behind the SRF is the wind gusts will not be uniform across the length of the span and the conductors als
To set and view the status of poles and conductors in your design, do the following: Click on a pole or span In the properties tab, select Materials Click into the field next to status and set the status of the conductor or span as required Once you have set the statuses of your poles and conductors, you can then view these at scale Click View at t
The Max Bending Moment vs Horizontal/Vertical is used by the Finite Element Analysis (FEA) engine when assessing if the bending moments in the cross arm have exceeded the prescribed limits. The maximum bending moment is calculated using the formula (see article on Neutral Axis for explanation of this concept): Example Consider the following c
In this step you will import a georeferenced maps overlay, assign a meaningful coordinate system to it, and import data. Click the Map tool on the Toolbar: The Map view will appear. In the search box, type and select an address, and then click on a point in the map to import that area: Your browser does not support HTML5 video. In the Design Cen
The Obstruction tool on the toolbar is used to place obstructions such as buildings and fences, making it easy to check your conductor clearances to the model: Supported obstruction shapes Obstructions that can be simplified to either a fence, a prism, or a cylinder can be modelled in Neara. Prism Any object that can be modelled as a prism can be
Importing the .construction library will also automatically import the associated components. If the linked file opens in a new browser tab instead of downloading, with that tab open choose File > Save Page As … in your web browser and save the page to your device, removing any .txt extension that might be automatically added by the browser. NBN
Now that we have modelled an existing network we can model changes and extensions. Viewing utilization Neara makes modelling changes to the network simple and effective with the Utilization view. This view calculates the utilization of a pole or conductor and represents it as a percentage of its total strength. We use this so that we can understand
Spacing of conductors on the same supports at mid span The mid span clearance calculation is taken from AS/NZS 7000 2016 3.7.3.2. The k constant defaults to 0.4. The conductor sag is taken at 50°C in still air. The voltage of a cable is taken to be the voltage of the circuit. If the cables being compared are on different circuits the phase differenc
Overview You - and people that you allow - can access your Neara designs in the cloud on any device without needing to worry about downloading, moving, and sharing files. In addition, Neara's Version history feature allows your team to collaborate and communicate design changes easily by adding notes to each version change. This allows users to tra
General Theory Typically the wind pressure will have the largest impact on the loads applied to a structure. Hence when selecting and applying a design wind pressure the process is often more complicated than just selecting a single wind pressure and using it everywhere. Within Neara the wind pressure is calculated using the formula. Note that the a
Stays are modeled to take 100% of the tip load at the chosen environment. The tension in the stay is then calculated as follows: Where: Tc = horizontal conductor tension Th = horizontal stay tension Hc = conductor attach height Hs = stay attach height Ts = Stay tension Dual Stay Calculation Dual stays are modelled similar to a ball bearing suspend
M(z,cat) is a multiplier applied to the regional wind speed to take into account the terrain category and the height above ground. Terrains where there are few obstructions will have higher wind speeds as will structure and spans higher above the ground. At the end of this document are useful reference formulas from AS/NZS7000:2016. Enable Feat
The Maximum Bending Moment is calculated using the Maximum Bending Stress / Material Strength of an object along with the objects Section Modulus as per the following formula:
Select the conductor in question (e.g. click on it with the arrow tool) Click the "Spans" tab Type in the length for the given span The span will keep its orientation, and one of the poles will shift.
FEA Results FEA calculates the deflection and rotation of the poles and cross arms. To view the calculated deflection, click on the Structure Summary and select the pole of interest: Scroll down in the report to the pole and cross arm results (cross arms results shown below). Displacement The displacement is the amount an object has moved from i
Neara can calculate the tension required to pull underground cables through conduits. Calculation method Cable Pull Calculations are done according to the IEEE Paper: A General Method for the Calculation of Pipe Cable Pulling Forces; and Annexure A of 1989 ESAA Guide to the Installation of Cables Underground. The Cable Pull Reports calculates bot
Blowout Calculation Blowout angle and horizontal distance is calculated as follows: Where: P = wind pressure (Pa) d = conductor diameter (m) w = distributed conductor weight (N/m) S = conductor sag (m) Blowout Display There are three modes of blowout display Plan view Perspective view Numeric display Site Plan View Horizontal blowout is automaticall
This tutorial demonstrates how to create a single lot subdivision from an existing model of an underground network. The starting model could be an automod extract from a utility, or manually modeled from a DXF GIS overlay. Download the example design project shown in this tutorial Next: 4 - Large lot subdivision example
The Load Source option determines if the FEA is solving just the pole and cross arm deflection (Ruling Span) or is iteratively solving the pole and cross arm deflection along with the changes in conductor tension until an equilibrium is reached (Network Solve): Ruling Span When the Load Source is set to Ruling Span the conductor tensions and sags
The Snap tool on the toolbar is used to set the position or properties of Conductors, Poles or Stays to existing survey or LIDAR points to fine tune placement, after the process of extracting the poles and fitting both them and the conductors has completed: Point coloring LiDAR points are colored purple by default before a conductor is fitted to t
The length, width and depth of a cross arm is defined as per the diagram below. Note that the selection of depth and width will determine how the cross arm will handle vertical and longitudinal loads under FEA simulations which is explained in articles Cross Arm Parameters - Second Moment of Area and Cross Arm Parameters - Section Modulus . C
Wind Span Theory - Wind Spans The Wind Span is used to calculate the force applied to the conductors that is transferred to the pole. The Wind Span is defined as the sum of half the span length of the adjacent spans on a pole. Wind spans are independent of the weather conditions. For Example. Consider the scenario in Figure 1 where Pole 2 has a span
On the Home screen, click Preset File 1 under the Start section to create a new, blank project. Present File 1 is a Neara template that gives you a standard library of constructions to start a design: For more information about navigating and working in Project workspaces, see Using the Project screen & workspaces. Before you start designing w
To model a side-walk stay you will need to follow these steps: Adding a Stay and Opening the Stay-Pole Construction Library Select the pole you would like to attach your stay to and navigate to the properties tab Select "Structure" in the properties tab Select “Add Opposing Stay” Select the Stay to populate the properties tab with the stay propertie
Now that the construction libraries and the project has been setup, you can begin modelling your network. Using the Pole tool Adding poles Select the Pole tool on the toolbar Select Pole type on the Properties panel on the sidebar Left-click to place a pole of that type down Continue to click to place additional poles of the same type Your browser
Here the user may choose from various ways to define the stringing of the conductor and the resulting tension and sag. In each case a certain property of the conductor is specified to hold at a defined temperature, and from this property the other properties are derived. For example, the tension, sag, length, etc may be specified. In all cases, PLP
Conductors Select the Environments menu item, and on the pop-out scroll down to see the Derating Factors section at the bottom: Add derating factors Click Add Derating Factor underneath the table - a new row will be added. For this example: Enter ConductorA for the Name Select Variable under Factor. Variable are added to the Strength States table
The Material Strength is used in two places. It is used by the button Derive from section moduli and material strength to calculate the Maximum Bending Moment Horizontal/Vertical: It is also used is when checking the results from the Finite Element Analysis (FEA) engine. Note the Material Strength does not impact on any of the FEA calculations
The FEA Unstressed Lengths option controls how the unstressed cable lengths are derived: Deflect Poles The option Deflect Poles will hold the horizontal tension constant while the poles deflect; when equilibrium is reached, the unstressed lengths are used. To illustrate consider the following example that has a single Mango conductor strung betwe
The Moment of Area is a the name given to an equation in the form: The word moment generally refers to a force multiplied by a distance. In this equation there is a distance multiplied by an area and hence it has been named the moment of area. The power n in the above equation determines what moment of area is being calculated. If n = 1 then it is
Neara is capable of performing voltage drop calculations for underground designs that take into account the following parameters: Voltage of substation Impedance of cable ADMD of load Power factor of load(only for statistical method) Standard deviation of load (only for statistical method) Two methods of calculating voltage drop are available: si
The Constructions (Assemblies) library contains all the existing assemblies that exist in your project. Access it from the Library > Constructions menu: See also: Example constructions and components library downloads and How do I create a new construction? Using the Library The assembly library popup contains these sections: On the left is the
To view and modify detailed properties for conductor spans, select the Move and Select tool on the toolbar, click on a conductor span (it will highlight in green), and then click on the Spans tab in the Properties panel in the sidebar: The properties highlighted on the Spans tab are: Select Environment: Select from available environments for sag a
The Neutral Axis is the line along an object such that when a force is applied to the beam there is no tension or compression forces along this line. Consider the example below where a vertical force is applied to the beam. Here the dotted line is the neutral axis. All parts of the beam below the dotted line are in tension and all parts above the d
An updated version of this article is available See: Constructions (Assemblies) Library
The Profile Builder tool on the toolbar is used to view and create a cross section of your model, helping to see any clearance violations under different conductor sag conditions: Any clearance lines defined under the Clearances menu are shown in the profile view as a blue line: Creating a profile manually Normally, a profile will automatically
The file downloads on this page are scenarios modelled directly from worked examples in HB 331-2012 Overhead Line Design, from the following sections: Section 26.7.1 Section 26.7.4 Section 27.3.2 Use these files during onboarding and training to test if you achieve the same results. Note The calculations in HB 331-2012 are based on a naive calcula
A template library file contains a library of poles, conductors and constructions as well as environmental settings. This can serve as a starting point for users to begin designing or building their individual custom libraries. Attached are some template libraries available to users for free. On the homepage, click the Import Model File Icon Select
The Maximum Bending Moment is only used in static analysis. It is used in the PDF reports (under the loading plots) that check if the cross arms pass or fail for the different environments. If Finite Element Analysis (FEA) is used then the Crossarm parameter: Max Bending Moment vs Horizontal/Vertical will be used instead. Back to: Crossarm par
See also: a general explanation of first and second Moments of Area. The Second Moment of Area is a measure of the stiffness of a object due to its geometric shape - see also Second Moment of Area for Common Shapes . Some shapes are difficult to bend such as an I-Beam whereas others are easy to bend such as a flat sheet. The Second Moment of Area al
Select the Pole Tool and left-click on the conductor where you want the pole to be inserted. See this Tutorial for details.
Options to create a ground profile There are multiple ways to create a ground profile in Neara: Import a survey file Import a DXF file Import LiDAR data Create a ground / terrain profile manually with the Survey tool (this article) The Survey tool allows you to place a sequence of feature points with x,y, and z (elevation) values. The ground elevati
In order to ensure that conductors have sufficient clearance to the sides as well, the Conductor Clearance tool on the toolbar can be used to see the blowout of the conductors under max wind conditions. For example, if there are two lines close to each other as shown in the below image, we can see the minimum distance between them in the event of a
Crossarms have four material types that can be selected: wood, steel, concrete, and composite. The material type will determine which strength reduction factor is applied based on how the environment are configured. For example if the cross arm is set up as wood and the environments tab has a strength reduction factor of 0.3 set up for serviceabili
Measuring the clearance between conductors and other objects To measure the clearance between a conductor and other objects such as buildings or vegetation, or to another conductor, use the Clearance Measure tool instead. This tool also enables fine tuning on the specific environment chosen, conductor in a span used and the start and end points. M
To create a double cross-arm: From the Library menu select Constructions to open the Constructions library Select a cross-arm that has the same number of cables that your desired cross-arm will require Example In this example, we will select a single cross arm with three insulators: Select Make a copy at the bottom right and label it Select Add
Overview This article will cover how to work with the coordinate system within Neara, for information on specifying an EPSG code and centering a design using the map tool, view this article: Adding a map overlay to your design Imported survey data coordinates Neara will automatically centre the design from an imported survey file (Project menu >
Neara automatically generates a 3D vector model from a classified point cloud dataset, and intelligently reclassifies LiDAR based on heuristics and relationship to the model. This article provides a quick overview of how to use Neara to model a network from LiDAR data. For more detailed guides and information, browse or search the other articles in
You can create your own set of components by opening the components editor. Go to Library>Components Select a existing component closest to the one you want to create and make a copy Edit this component as required See youtube video: https://youtu.be/NbIlkCMR96c
The section modulus takes the Second Moment of Area (measure of the stiffness of a object due to its geometric shape) and divides this by the distance from the Neutral Axis to the outer surface of the object. The Section Modulus is used to calculate the Maximum Bending Moment . See also Crossarm parameter: Section Modulus
Neara Reports also support creating powerful, complex formulas that operate inside table cells. You can use formulas in reports to, for example: Perform calculations such as a custom length check of conductor spans Conduct comparisons and return a Pass or Fail result Create a new property of an object such as a pole or conductor Generate visualizat
The Split Conductor or Construction tool on the toolbar is used to split a conductor at a specific construction in order to reduce loads, or to fine tune the model: There are two options when using this tool. Split to seperate conductors sharing a single construction This is used when the line is turning and alters the construction from a single c
Neara provides designers with strong integrated design software that covers everything from scoping to project submission. Our suite of design and management tools empower all styles of workflows for distribution and transmission projects. In Neara, you typically work in Projects. Each Project can contain data, models, settings, workspaces and more.
The mass of the crossarm is used in loading calculations, depending on the options set in your Environments. Back to: Crossarm parameters: Overview
Why use lists and collections? If your problem involves finding or comparing a number of things in Neara, you are likely to want to take advantage of lists and collections. This article will explain the composition and uses of both concepts. Without going into details, and acknowledging that there are many ways to achieve certain ends in Neara, here
You have created a conductor and now want to extend it by adding additional spans. To do this, follow these steps: choose the Conductor Tool left-click on the target conductor near the end that you wish to extend (you can extend the conductor from either end) be careful not to click on a pole, as this will create a new conductor, which is not what y
The Torsion Constant, also known as the Polar Moment of Inertia (or Second Polar Moment of Area) is a geometric property of an object representing its resistance to twisting in response to an applied torque. The units are length4. The torsion constant is the second moment of area calculated along the z axis. The torsion constant is dependant on the
With the new line modelled we have 2 clearance concerns: Clearance to the ground; and Clearance to objects such as houses and fences. Updating ground clearance lines Earlier we set our standard clearance line at 5.5m. This is displayed as a blue horizontal line in the Profile view: To update it select the Clearances menu and modify the height o
Neara's Precision relative placement options enable the exact placement of objects, such as terrain points or poles, relative to a reference object. The object can be placed according to the distance, bearing and vertical angle as specified by the user. To position an object in this way, select it after clicking the Move and Select tool on the tool
Environments The Environments column shows the list of Environments that can be applied to the pole. Checking any box in the Environments column will plot the resultant pole forces of that environment in the Resultant Forces Graph. In the case where the pole forces graphs are identical between environments, they will overlap each other perfectly and
To set-up an S3 bucket for your data, you will have received a temporary URL that contains bucket credentials. You will use the bucket to upload raw point cloud, and download classified point cloud that has been exported from Neara. This guide explains what to do once you receive the tinyURL. 1. Open your URL A browser tab will open containing inf
Figure 1 - Tip Load Components The total tip load force on pole is the vector sum of the following components: Transverse Wind Force on Conductor Longitudinal Conductor Force Wind load on pole e.g. In a no wind condition, only longitudinal conductor forces will contribute to the tip load of pole. Wind Load on Conductor Transverse Wind Force on
The ratio of stress and strain gives the Modulus of Elasticity . Stress Stress is a measure of the internal forces in a object per unit area and is given by the following formula. Strain Strain is a measure of the change in length of an object due to an applied stress. The units of strain is length/length (% elongation).
Neara allows for a custom Pole Strength to be set directly as a maximum tip load, or calculated based on pole dimensions. Enable the Custom Pole Strength option To set a custom Pole Strength, first select a pole. Choose either the Move and Select tool or Pole tool from the toolbar, and click an existing pole in the Perspective view or Profile view
Neara offers a built-in Point Cloud Clearance Report under the Reports menu, for instant download in PDF or CSV format. This report allows you to see clearances calculated from LiDAR data to determine any potential locations where conductor lines may breach clearance violations due to vegetation or structures: The report provides a description of