DRAINS Core Workshop
The DRAINS Core workshop is intended for persons who are just beginning to use the DRAINS program. It is meant to get them started and to know where to obtain necessary information. It also provides a comprehensive refresher for experienced professionals wanting to learn the latest features, utilising the Premium Hydarulic model and to apply the ARR 2019 design procedures.
With the finalisation of ARR 2019 new material has been added on the new initial loss – continuing loss urban model and the pipe design procedure using rainfall ensembles.
The workshop with commence with an ARR 2019 morning seminar, covering an overview of the guidelines applied to Urban Drainage design including new ARR probability terminology, the Initial and Continuing Loss (IL-CL) hydrological model and obtaining the necessary data from online sources.
On day 2, the workshop covers further capabilities of DRAINS relating to piped urban drainage systems, considering analysis as well as design.
Procedures for design of street drainage and inter-allotment drainage are outlined, and issues such as pit inlet capacities and pressure changes are explored in depth. Detention storages such as those used for on-site detention are explored in depth.
It is suitable for civil engineers and related professionals who will be using DRAINS, and assumes no prior knowledge. While the workshop’s basic aim is to train participants to use DRAINS, it covers the background to the use of DRAINS in designing stormwater drainage systems, and many of the complexities that a designer will encounter.
The workshop is presented by Benjamin Kus and Hossein Ansari, and runs from 9 am until 5 pm, with 13 hours of tuition. The topics covered include:
- DRAINS – how to navigate its interface,
- Installation and updating,
- An example of a pipe design model, setting up, running a model, and reviewing results,
- New 2016 I-F-D’s from the Bureau of Meteorology and temporal patterns from the ARR Data Hub,
- Step-by-step construction of a DRAINS model using the ARR 2016 design procedures,
- Exercises involving building models (with solutions),
- Available hydrological models, including ARR 2016 initial and continuing losses, ILSAX and rational method models,
- Information on (a) pit pressure change coefficient calculations, (b) pre- and post-processing spreadsheets and (c) the DRAINS Manual and Help system,
- An overview of design procedures for piped drainage systems, and the role of analysis,
- Comparing the ARR 2016 procedures with earlier methods,
- Review of a DRAINS pipe system model for design of a street and inter-allotment drainage system,
- Optimisation of the initial designs produced by DRAINS,
- Connections between DRAINS and other design programs, with an example using Civil Site Design,
- Complex aspects of piped drainage systems, including connecting new pipelines to existing systems, loops and effects of reverse flows,
- Additional features of the premium hydraulic model,
- Detention basin calculations, analysis of detention and retention systems in DRAINS,
- Review of examples of detention system models, and exercises in building models that combine piped drainage with a detention basin,
- Construction and costing issues, and
- A review of problems that may be encountered in pipe and detention basin systems.
The workshop equips participants with:
- the ability to set up DRAINS models for design of street and property drainage systems,
- an awareness of design rules and advanced aspects of DRAINS,
- knowledge of how to obtain further information,
- an understanding of design requirements and processes for street and inter-allotment piped drainage systems, and
- understanding of detention basin calculations, and application of these in DRAINS.
Participants are provided with notes and a USB drive with PDF copies of the DRAINS manual and workshop notes, spreadsheets, examples, exercises and solutions, which can be utilised for post-workshop revision.