PipeClass 3.0 is the only concrete pipe selection software application which designs pipelines to AS/NZS3725:2007 Design for Installation of buried concrete pipe. The software is supported by the Concrete Pipe Association of Australasia.
The Concrete Pipe Association of Australasia has a long history of providing technical support to designers, specifiers, installers, asset managers and owners of pipeline systems.
PipeClass 3.0 continues our tradition of supporting you, the user, with the most up to date design aids available.
PipeClass may be used by any number of users for the purposes outlined in the Scope, on any number of systems without fee or obligation, subject only to the terms and conditions contained in the Liability Statement.
PipeClass 3.0 has been developed as an intuitive application to enable ease of use.
If you have difficulty using PipeClass your first port of call for technical support is this help file. The answers to most questions can probably be found here. The next step is to try the CPAA web site or contact the CPAA or one of its member companies for assistance.
PipeClass 3.0 approaches pipeline design in a logical manner, moving through a sequence of steps data is gathered from the user about the pipe and how it is to be installed. As this data builds up a design emerges on the right hand of the screen for handling the required long term and short term loads. Finally outputs can be generated to keep on file, aid specification documentation and share.
There are five discrete sections that are the basis of the application:
The Earth Loads page contains a number of inputs which are used to calculate the earth loads acting on the buried concrete pipe. Like AS/NZS 3725:2007, the software is based on the work of Anson Marston and, later, Marvin G. Spangler and others at the Iowa Engineering Experiment Station. Users of this software seeking further information are encouraged to use the references below.
Click here for more information of the different sections of the Earth Loads page.
AS/NZS 3725:2007 Design for installation of buried concrete pipes, Standards Australia/Standards New Zealand.
AS/NZS 3725 Supp 1:2007 Design for installation of buried concrete pipes – Commentary (Supplement to AS/NZS 3725:2007), Standards Australia/Standards New Zealand.
SPANGLER M.G., and HARDY R.L. Soil engineering. McGraw Hill, 1982.
The calculation of C’e is quite complex and depends on the location of the height of plane of equal settlement, He. If He >= H, then C’e is calculated from the following equation,
or if He < H, then
To apply either of the above equations, He must be known which is obtained from a solution of the following equation:
Note: In the case where He > H then the plane of equal settlement is indeed imaginary and the actual value obtained in solving the above equation is meaningless. As such, if He > H, then PipeClass will return a value of He = H.
The Construction Loads section is for specifying live loads that will only be applied during construction, for example, one or more specific construction vehicles. These construction loads are distinct from in service design loads, which are those applied over the life of the pipeline such as those from regular vehicle traffic.
The selection of construction loads are intended to allow the designer to include loading from compaction equipment and other construction equipment such as dump trucks, scrapers, rollers, etc, which may be applied to the pipe during installation of the pipeline. Such loads can and are intended to be applied at fill heights lower than the height of fill or height to top of rail, H, and are not intended to be permanent design loads. Construction loads are vehicles selected from the vehicle library. Use the Add and edit the vehicles in the list.
A particular construction load will be included in the analysis if a tick appears in the column to the left of the construction loads description. Click in this column to toggle the live load on and off.
A unique feature of PipeClass is the graphical representation of the effect of construction loads. This feature provides the designer with the direct means of seeing at what point the construction load exceeds the design proof load. To access this feature select a construction load and then click on the Graph button to the left of the list of loads.
Thex-axis range input field to the bottom of the graph allows variation of the right hand x-axis limit between 1 to 50 metres in various steps.
The right hand screen segment provides a concise summation of the pipe design and includes material quantities for the installation. Also shown is a diagram of the installation quantities.
Clicking on the Details button at the bottom of the page will open the Load Calculation Details window.
Clicking on the Print button at the bottom of the page will allow the user the option to print the Pipe Load Summary, the Pipe Installation and Quantities, a Detailed Load Report, the Installation Specification and the Construction Load Graphs.
Clicking on the Export button at the top of the left hand screen segment will allow the user to print the details of the design.