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What You Need To Know About Pavement Design

Oct 22nd, 2024
Geotechnical Innovative Golf Links Road and Grant Road

Having the right or wrong pavement design can make millions of dollars difference in a project. That’s why it’s so important to do your pavement design correctly the first time around, and this includes choosing the right team of pavement engineers for the job.

Pavement design is about more than footpaths–it actually influences all kinds of construction projects, from major highway construction to the maintenance of your local sporting ground. Let’s learn more about this vital aspect of geotechnical engineering and how pavement design informs the success of many modern construction projects.

What Is Pavement Design?

When we talk about ‘pavement design’, this refers to the planning, testing, and creation of more than just sidepaths. The term actually encompasses driveways, pathways, industrial hardstand, working platforms, sports fields, rail trails, sub-divisional roads, rural roads, council roads and freeways.

Pavement design, along with pavement investigations, can be used to determine the best materials, thickness, form and techniques to use when creating new pavement or rehabilitating old pavement. Not only does this help create the ideal pavement for your needs, but you also save money on repairs that would need to happen if the less-optimal type of pavement was created instead.

Pavement design may be used for civic, industrial, commercial and domestic construction projects, including the building of bridges, roads and buildings. Wherever a concrete base has been created, pavement design will have a hand in planning it!

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Where Is Pavement Design Commonly Used?

No matter where you are in Melbourne, chances are you’re near a structure or feature that needed pavement design in its creation. Some examples of structures and places that use pavement design include:

  • Roads: Every road you see, from quiet suburban streets to busy outback highways, needs to be designed carefully to ensure its longevity. Factors like how much weight and traffic loads they will face, as well as soil and weather conditions, need to be taken into account when designing roads to minimise the need for repairs and keep vehicles on them safe.
  • Driveways: While they aren’t used nearly as much as roads, driveways still need to be able to withstand the moving weight of heavy vehicles a few times a day or the constant weight of a parked vehicle at all times.
  • Sports fields: While they’re not your traditional pavement, artificial grass sports fields still need to be designed so they can perform optimally. This involves minimising ground movement under the turf by creating better drainage and using the right materials to cover the space.
  • Walkways: Pathways don’t need to endure very heavy weights, but constant foot traffic can still take its toll. Pavement design can be used to determine the best thickness and drainage systems for walkways so they can provide a safe surface for pedestrians to use at all times.
  • Worksites: Modern worksites need to have the proper hardstand to endure heavy weights from trucks, shipping containers, forklifts, and other types of vehicles and machinery. Pavement design can be used to predict what types of maintenance these sites will require.

Need pavement design in Melbourne? Contact SITE Geotechnical, your local geotechnical engineering experts!

What Resources And Programs Are Commonly Used In Pavement Design?

Publications and Design Tools Used In Pavement Design (1)
Source: SITE Geotechnical Publications and Design Tools Used In Pavement Design

The process of pavement design in Melbourne involves a few key resources that are used to ensure success in every project.

Pavement Computer Modelling Programs

At reputable companies like SITE Geotechnical, we use only the latest programs and software to design our pavements. The Australian-designed CIRCLY system is a powerful, easy-to-use program that has been used for over two decades for road design here and in New Zealand. As part of the Austroads Pavement Design Guide, CIRCLY has helped set the standard for road design across the country.

Recycled Materials

SITE Geotechnical is a strong advocate for the use of recycled material in pavement construction, as not only are these materials fantastic for creating strong and durable concrete, but using them lessens the need for harvesting raw natural resources as well.

Recycled materials can be added to existing concrete to stabilise it or used to create entirely new concrete pavements. Categories of materials used in these instances include flexible concrete, rigid pavement and solid materials like glass, plastic and steel slag.  

We consider ourselves to be one of the leaders in pavement rehabilitation design and stabilisation.  For example, standard crushed rock can be converted into an asphalt-type material through the process known as foam bitumen stabilisation, where bitumen is added to make these conventional materials into something much stronger and durable.

Growth Area Authority Guidelines 

The Victorian Planning Authority (previously known as the Growth Areas Authority) manages Victoria’s growth by ensuring it remains a great place to live as the population grows and expands. By keeping our designs are in line with the VPA’s guidelines, we can create pavement solutions that help keep our suburbs in a state of sustainable growth while also remaining liveable.

VicRoads & Transport Victoria Publications

We keep up to date on all the latest publications and rules from the Department of Transport and Planning and VicRoads. This allows our team to stay abreast of the latest rules and regulations around pavement design in Melbourne, with different information available for everything from crossings and parking garages to green infrastructure and water management.

By using these resources, pavement engineers can bolster the long-term performance of their work and ensure they are built the right way from the get-go.

Contact Us Today
Get Expert Geotechnical Services
Contact SITE Geotechnical for thorough soil testing, drilling, and engineering solutions.

What Can Pavement Design Be Used To Test?

Pavement design can be used to test for a number of factors and will be used to make sure both that the pavement itself can support whatever is going on top of it and that the pavement itself will stay in place over whatever type of earth it has constructed  over.

Use the pavement design aspect of geotechnical engineering to test:

  • Falling Weight Deflection (FWD): This quick, non-destructive method can be used to measure a few different physical properties of existing pavement, such as its surface deflection and to estimate its structural capacity.  It can also be used to assist with back calculation of material properties within the road or as a quality control measure during construction to make sure a project is meeting design objectives.
  • Suitability of Industrial Hardstand: This surface, often seen in areas like airports, shipping yards and warehouses, must have the right type of pavement to ensure it can safely handle extremely heavy loads. 
  • If old pavement materials can be stabilised: Sometimes, old pavement materials can be stabilised and upgraded using recycled materials. This will involve adding a binder or granular material to improve the pavement’s performance.
  • Suitability of pile/crane working platforms: Minimise the risk of overturning by making sure the pavement under your crane can withstand the weight and stay stable on its working platform and if not come up with solutions that will make it safe.

With such a wide range of possible tests and factors to test for, one of the most important things you can do is choose the best pavement engineers for the job.

Who Can I Trust For Pavement Design Services?

Geotechnical Pile Crane Working Platform (2)
Source: SITE Geotechnical Pile / Crane Working Platform

When it comes to finding the best geotechnical engineers in country Victoria and metropolitan Melbourne for your pavement design, there is only one choice. At SITE Geotechnical, we’ve offered professional pavement design services since 2005, and our team has over 80 years of combined geotechnical engineering experience!

Whether you want an in-depth pavement investigation or need our reliable pavement rehabilitation design and investigation services, you can count on SITE Geotechnical to provide you with an honest, transparent and expert partnership.

Contact us on 1300 557 260 or leave us a message using our online enquiry form and our team will get back to you as soon as possible regarding your request.

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