Concrete Slabs for Sheds

20 January

Need to Know:

  • There’s a lot to learn about farm sheds and the terminology can sometimes be hard to grasp for those who haven’t built a structure before. In part two of Buffalo Built’s glossary of shed terms, we’re exploring the foundation of a good shed – cement slabs. 

  • Below we cover some of the most common terms used within the industry, so you’re in the know when you discuss building your new shed.

  • This rounds out our mini-series on shed terminology.

Picture of Ross Barker
Ross Barker

Managing Director, Buffalo Built

In this Article:

Building a Concrete Base for Your Shed? Here’s a Handy List of Acronyms

Apron: Part of the slab directly outside the shed.

Bar chairs: Plastic perches that hold mesh up from the bottom of the slab when pouring concrete. These help to position the reo mesh in the correct spot for maximum reinforcement.

Boxing: Formwork used to form up the slab rectangle, creating a temporary timber ‘frame’ in which to pour the slab.

Concrete: A composite material composed of fine and coarse aggregate bonded together with a fluid cement (cement paste) that hardens (cures) over time. The concrete slab for your shed will keep your vehicles and equipment dry, safe and secure.

Expansion joints: These are used to compensate for expansion and shrinkage in concrete due to temperature changes and other factors. When the concrete  base for your shed hardens and sets, it reduces in volume, which can cause cracking. To combat this, expansion joints are included – these are usually either ‘saw cut’ joints, which are 15-20mm cuts with a saw into the slab, or ‘trowel’ joints created with a trowel.

Ligatures: Also called stirrups, ligatures are tied to the top and bottom of trench meshes or reinforcing rods, forming a cage or column. This can enhance the compressive strength of concrete footings and beams.

MPa: Abbreviation of megapascal pressure. The MPa of concrete is a term used to describe the megapascal strength of concrete or its tensile strength. At Buffalo Built we recommend a minimum of 25MPa in slabs.

Reinforcement mesh: Commonly referred to as ‘reo’, this steel mesh is used to reinforce concrete slabs. Commonly used types include SL82, SL92 and SL102.

Buffalo Built – Sheds Built Tough!

In our next article, we’ll be covering all your concrete FAQs, such as how thick it should be, the importance of expansion joints, whether you should build on an existing slab, and design decisions to make before you start your slab. The concrete base for your farm shed is a critical element to get right – to find out more about what we recommend, take a look at our article on how to build a shed on a concrete slab.

Picture of Ross Barker

Ross Barker

Managing Director, Buffalo Built

For sheds in Wangaratta, Mansfield and surrounds – trust Buffalo Built!

The Buffalo Built team is here to support you with the information and support you need before you begin your shed project.

Having delivered tough sheds, garages, carports, barns, and caravan sheds to the North East region for decades, we’re here to help you get the right shed for your needs.