Using elongated forms to customise manholes and access chambers

If the round manhole form you’re looking to use suddenly requires a short notice variation to accommodate multiple pipes adjacent to each other, don’t despair. Perhaps your digger has uncovered inlets that are spread a little far apart. But you won’t have to worry about long wait times as you organise a correct fit. You can rely on elongated forms (also known as extended forms) to fully accommodate the configuration of pipes into your manhole, and instantly get your project back on track.

Extended forms are customisable panels inserted into manhole forms that can be adjusted to suit the size variations you require. If need an exact fit in time, extended forms will do the trick. Does this sound like the kind of adaptable tool you’ve been searching for? Allow us to take you through the basics of how they work.

The benefits of elongated forms

It's paramount that your manhole form fits exactly to the correct size you need, whether you’re creating a manhole for sewage, stormwater, or any hardware. For various types of manhole functions and sizes, elongated forms can slot in wherever you need them. The greatest part about using elongated forms on your project is that they can be adapted to meet your measurement specifications with fast adjustments and minimal preparation. 


Because we value flexibility, Manhole Form Hire offers elongated forms all across Australia.


When using manhole forms for a range of varied applications, you may find that one size does not suit all. In these moments where you’re scrambling to find a way to refit your forms, extended forms will prove extremely useful. Extended forms are longer versions of your average round manhole form and serve to customise your existing form size to exactly what you need, meaning you can get back to work without any project delays.


It’s important that any manholes you’re pouring suit the correct size and accessibility required for their service. If you’re pouring a standard round manhole and realise that you need to change the shape or size of your forms to an extended form, you should reconnect panels correctly so the edges of the panels remain flush against one another. Ensure that you don’t split the forms at the keys, as key edges are angled and must connect with like panels. If you’re looking to utilise elongated forms for your project, Manhole Form Hire offers these extension panels for your convenience.

The importance of correctly assembling elongated forms

Still confused? Here’s an explanation video that walks you through the process and includes visual representations of how to complete every step, as well as exactly where you should avoid splitting.

How to use elongated forms

If you’re wondering how to use elongated forms for your projects, here’s a step-by-step walk through:

  1. Any diameter in our round form range can be extended into an oval. Assemble the round form first.
  2. Choose 2 opposing joins (not either side of a key) and separate the form into 2 halves.
  3. Insert panels to create elongated forms, check the shape (it should look like the one below) and tighten bolts.


If you’re looking to expand or extend your manhole forms and you are tight on time, extended forms are the perfect tool to safeguard your project pipeline. Don’t waste time worrying about resizing your forms and going back and forth to find the right fit, utilise the malleable functionality of elongated forms and bypass all the hassle.


Manhole Form Hire offers elongated forms all across Australia for your project needs. You can count on their adaptable sizing to ensure your manhole form is exactly right. Manhole Form Hire will deliver to your site next day.

03 Jul, 2023
As providers of Pecaform formwork, we’ve compiled a range of frequently asked questions so you can learn more about how Pecaform works!
03 Jul, 2023
Want to know more about the importance of concrete stormwater pits? Click here to learn how they’re installed and their benefits.
03 Jul, 2023
Want to learn more about the function of gully pits and how they are installed? Click here to read our blog and get the information you need.
03 Jul, 2023
Click here to explore the most beneficial reasons you should hire a manhole form to make your project a guaranteed success.
03 Jul, 2023
After the affects of COVID-19, we’re revisiting how we can continue within the civil infrastructure industry to grow and recover.
03 Jul, 2023
Learn why you should ditch precast manholes and opt for manhole form hire options to benefit your jobsite. Click here.
03 Jul, 2023
Click here to read the announcement that Manhole Form Hire will be attending NCEC in 2018.
03 Jul, 2023
Manhole Form Hire can help make your project a success. There’s a range of ways you can use our products, so click here to learn more.
03 Jul, 2023
Manhole Form Hire are the experts in manhole forms. To learn more about why manhole covers are round, click here.
03 Jul, 2023
Manhole Form hire are the experts in manhole and utility installations. Click here to learn how to install a manhole form on your site.
More Posts

Get a quick quote

Contact us

If you have any questions about our manhole form hire options or any of our other products, don't hesitate to contact us. Servicing across Australia, including Queensland, New South Wales, and Victoria, our team of experts are always ready to help you find the right manhole forms for your needs and provide support. Whether you’re building a manhole for civil or council purposes, our forms are perfect for you. Either fill in our enquiry form or give us a call to get in touch today.

2 Freight St, Gold Coast QLD 4207, Australia



Share by: