12d

12d

The Sydney-based company 12d Solutions markets the 12d program, a digital terrain model with many useful features for surveying and engineering design.  It is particularly geared to road design. Further information is provided on the website, www.12d.com.

A link exists between 12d and DRAINS that allows pipe drainage system design information to be transferred between the programs through DRAINS' spreadsheet input/output facility. This is available as a module in 12d.

    • Related Articles

    • Obtaining 2016 I-F-D Data

      The latest rainfall intensities and depths to be used in design and analysis procedures are obtained after completing the previous steps from the ARR Data Hub. If you want to obtain the 2016 IFDs separately to the ARR Data Hub click here. This ...

    • I-F-D (intensity-frequency-duration) relationships

      This is a three-way relationship that defines the statistical distribution of rainfalls expected to occur at a particular location. It is derived from statistical analysis of rainfall pluviometers or automatic raingauges, which record rainfalls ...

    • Rational method setup with 2016 I-F-D data

      Although it is not sanctioned by ARR 2019, it is likely that some designers will want to continue working with the rational method, maintaining the methods set out in the 1987 edition of ARR. This can be done in DRAINS with 2016 ...

    • Importing data tables from a spreadsheet

      Rainfall hyetographs and stream flow hydrographs can be imported into DRAINS via the Windows Clipboard using the following procedure: (a) Set up the data in a table of values, with the times of the start of each period in one column, and the rainfall ...

    • Updating existing DRAINS models

      The ARR 2019 initial loss - continuing loss model and the associated ensembles of design rainfalls can be added to existing DRAINS models using Horton (ILSAX) or the ERM. Rational method models can be updated or created using the procedure outlined ...