ExtrAXION Rebars


The Add-on program ExtrAXION Rebars allows the rapid, high precision measurement of steel reinforcement, directly from the drawings. This allows for more accurate costing of projects.

The measurements of the reinforcement bars can be made on any structural drawing and regardless of the software program used to generate it. 

ExtrAXION Rebars supports vector files - CAD (DWG, DXF, DGN, DWF, etc.), PDF files and image files, derived from scanners, digital cameras or mobile phones (BMP, GIF, JPG. TIFF, etc.).

The Add-on can be used for all types of reinforced concrete jobs. It is designed for quantity surveyors, estimators, civil engineers, builders and contractors who need to have accurate data on the quantities of reinforcement required.




The ExtrAXION Rebars Add-on streamlines the process of measuring steel reinforcement. The user can obtain:

  • Accurate and rapid estimation of the cost for the construction of the concrete structure.
  • Organization of steel reinforcement bars for easy overview of the whole project. The rebar measurements are organized, in each drawing, creating a "tree" with structural elements, sub-structural elements and the steel bars at the lowest level.
  • Increased ability to check for any errors or omissions, particularly due to the option to identify the bars either on the drawing or on the "tree" of reinforcements.
  • Results are viewed on tables that can be customized by the users. Tables are shown on the drawings and can be exported to Excel sheets, greatly facilitating control by third parties. 


  • The steel bars can be measured in three different ways: by drawing them on the plans (whether they are visible or not), by directly selecting their linear segments on the drawing, or by selecting them from the library of several ready-made shapes and defining the segment lengths.
  • ExtrAXION Rebars even allows the users, on the basis of their experience, to measure and calculate the cost of rebars, which are often not indicated by the engineers on the drawings.  
  • Each steel bar belongs to a structural element and is automatically given a code. The users define the rebar size, link it to a work item and indicate whether it is a main, additional or auxiliary reinforcement. They can optionally give it a description.
  • Rebars are rotated to better fit in the reinforcement tables’ cells automatically by the program. The user can manually adjust the rotation. Rebars can also be represented by a user defined marking figure as necessary (ex. when the rebars are perpendicular to the drawing level they can be hidden and replaced by a symbol. To measure the height of such perpendicular rebars in columns the user can rely on the "auxiliary drawings" option of ExtrAXION
  • For rebars that appear once on a drawing but are to be repeated (ex. across the width of a slab) the user needs to measure only once, type the distance between the bars and the total width – which can also be input through a measurement on the drawing. The number of required steel bars, the total length and total weight are automatically calculated.
  • ExtrAXION Rebars can automatically generate detailed reinforcement tables for the complete explanation of the quantities. The users can select from the "tree" the structural elements they wish to view and create the corresponding rebar table.

Reinforcements Library

A library available for immediate use is included. The data in the library is editable, and new information can be added by the users so that it fits perfectly their needs.

The library includes:
  • More than 150 ready-made reinforcement shapes with default values for the length of the various segments defined by experienced civil engineers. The users can also define and design new custom shapes and input the formula which calculates their length.
  • Structural elements (beams, columns, slabs, footings, walls, etc.)
  • Standard diameters of reinforcements with weight per unit of length, for both the metric and the imperial systems.