Temporary working platforms for cranes and piling rigs are high-risk for those using them as well as those designing them. Many elements must be considered during design and construction phases.
Appropriate load input parameters need to be carefully selected to obtain the correct load cases. And robust and reliable design methods (including geotechnical parameters selection) need to be applied to assess the required thickness and stiffness of the working platform.
This course shares industry best practice methods for design and verification, covering both theory and practical application.
You’ll learn about:
- the FPS method to assess the critical track pressures applied by piling rigs;
- two common guidelines for the design of temporary working platforms (BRE470 and TFW2019);
- the applicability of the different design methods for various ground conditions;
- the underlying design assumptions about load transfer from piling rigs and cranes; as well as
- the consideration of static and/or dynamic load factors in the different design approaches are briefly introduced.
Course facilitator and civil engineer with over 20 years’ international experience, Dr Martin Larisch will also discuss the most suitable soil investigation techniques to use for subsurface investigation works and the potential verification methods for platform verification/ certification.
To demonstrate the practical application of these concepts, the course will also include will include real world examples to expose some of the limitations and related risks.
- Different load cases which need to be considered for the assessment of plant loading and track bearing pressures
- Principles of working platform design and the fundamental differences between the BRE470 and TFW2019 methods
- Effects of ground water on the different design methods
- Soil suitable site investigation methods to assess the subgrade conditions and their advantages and limitations
- Common verification methods to assess and verify the construction of working platforms
Is this course for you?
This course is suitable for experienced temporary works and geotechnical engineers looking for a refresher; or as an introduction to working platform designs and verification for participants with limited or no experience in this area. Roles include:
- Geotechnical engineers
- Civil engineers
- Structural engineers
- Temporary works designers
- Site managers
- Project engineers
- Project managers
- Construction managers; and
- Professionals from piling and crane companies
Participants should be familiar with fundamental geotechnical and structural design principles but no experience in working platform design and assessment is required.
Topics we'll cover
- Conceptual load assessment and bearing pressure assessment based on different load cases (FPS method),
- Basic ground investigation methods for the design of working platforms and fundamental assessment of geotechnical design parameters
- Introduction of the two common design methods for the design of temporary working platforms (BRE470 and TWf 2019 methods)
- Comparison of the methods, their potential outcomes, limitations and risks of the methods and discussions about the consequences for construction projects
- Introduction of some selected verification methods for working platforms ranging from complex (e.g. geophysical methods) to simple methods (e.g. proof rolling) depending on the project risk, plant loading, ground conditions and application
- Practical examples and calculations of the track bearing pressures for bored piling, CFA and driven piling rigs, and crawler cranes.
- Calculation of working platforms under different plant loadings and different subgrade conditions (e.g. cohesive soils, granular soils, changing groundwater levels)
Dr Martin Larisch is a Chartered Professional Engineer in Australia and New Zealand with more than 20 years of international design and construction experience in the piling and ground engineering sector.
He has worked in various technical and operational leadership roles for some of the largest specialist piling and ground improvement contractors in Australia, New Zealand and Germany and has significant experience in the design of temporary working platforms for piling rigs and cranes.
He was also affiliated with The University of Queensland in Brisbane as an Adjunct Associate Professor in the Geotechnical Engineering Centre from 2014 to 2021.
Martin is a current member of the DFI/ EFFC Working Patform Task Group and Temporary Works Forum in Australia.
The course will be delivered in two x two-hour sessions.
The first session will cover theoretical and general background information about load input from piling rigs or cranes, basic design methods and platform verification.
The second session will focus on practical application of the content covered in session one, including real world examples (with calculations) and group discussions.
Delivery platform - Zoom
These sessions run through Zoom. On the day of the webinar you will receive the unique Zoom link at least one hour before the webinar is scheduled to begin.
We suggest that you download the Zoom Desktop Client to ensure you can fully participate in the webinar. If you view the webinar through the Zoom web browser or via a phone or tablet device you may not be able to participate in the interactive elements such as answering polling questions.
Please read through the following information on Zoom to ensure you are prepared for the webinar: